Add public waitlist and usage counts for the marketing site.

Counts stay aggregate, and joining the waitlist does not create an account.
Closes #74.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

@@ -16,8 +16,6 @@ OLLAMA_BASE_URL=http://127.0.0.1:11434
 # OLLAMA_MODEL=gpt-oss:20b
 # OLLAMA_MODEL_THINKING=gpt-oss:20b
 # OLLAMA_MODEL_FAST=gemma4:latest
-# Vision (image + prompt). Must be a vision-capable tag. Default gemma4:latest.
-# OLLAMA_MODEL_VISION=gemma4:latest
 # OLLAMA_MODEL_UTILITY=llama3.2
 # OLLAMA_EMBED_MODEL=nomic-embed-text
 # OLLAMA_NUM_CTX_THINKING=16384
@@ -41,11 +39,8 @@ EMAIL_USE_TLS=true
 # Captcha (optional local)
 CAPTCHA_SECRET_KEY=
 
-# Password self-serve sign-up (default true). Set false to close /user/create/.
-ENABLE_ACCOUNT_REGISTRATION=true
-# Browser SSO. Leave false until Google / Microsoft sign-in should be public.
-# Client ids below can still be set for Drive linking.
-ENABLE_SSO=false
+# Self-serve sign-up (default false — set true to allow /user/create/)
+ENABLE_ACCOUNT_REGISTRATION=false
 
 # OAuth SSO — Google / Microsoft (#24). Leave blank to hide SSO buttons.
 # Redirect URIs (register in each IdP console):
@@ -88,12 +83,8 @@ STRIPE_WEBHOOK_SECRET=
 # Optional: pre-created Stripe Price ID for Founders. When empty, Checkout uses
 # SubscriptionPlan.price_cents / SUBSCRIPTION_PRICE_* ($10 USD / month Founders).
 STRIPE_PRICE_ID=
-# Native store purchases (#78). iOS verifies the StoreKit signed transaction
-# against Apple Root CA G3. Android calls the Play Developer API.
-APPLE_IAP_BUNDLE_ID=ai.hesychia.chat
-GOOGLE_PLAY_PACKAGE_NAME=ai.hesychia.chat
-# Service-account JSON (one line) or a path to the JSON file. Empty disables Play confirm.
-GOOGLE_PLAY_SERVICE_ACCOUNT_JSON=
+# RevenueCat webhook Authorization bearer secret (store IAP).
+REVENUECAT_WEBHOOK_SECRET=
 # Optional JSON map of store product id → plan slug, e.g.
 # REVENUECAT_PRODUCT_PLAN_MAP={"hesychia_founders_monthly":"founders"}
 # SUBSCRIPTION_PRICE_AMOUNT_CENTS=1000

.env.prod.example

@@ -37,8 +37,6 @@ OLLAMA_BASE_URL=http://10.0.0.128:11434
 OLLAMA_MODEL=gpt-oss:20b
 OLLAMA_MODEL_THINKING=gpt-oss:20b
 OLLAMA_MODEL_FAST=gemma4:latest
-# Vision (image + prompt). Must be a vision-capable tag.
-OLLAMA_MODEL_VISION=gemma4:latest
 OLLAMA_MODEL_UTILITY=llama3.2
 OLLAMA_EMBED_MODEL=nomic-embed-text
 OLLAMA_NUM_CTX_THINKING=16384
@@ -61,13 +59,9 @@ EMAIL_USE_TLS=true
 # Captcha
 CAPTCHA_SECRET_KEY=replace-with-captcha-secret
 
-# Password self-serve sign-up. Default true. Set false in
-# chat_backend_prod.env / chat_backend_beta.env to close public registration.
-# An explicit false in that secret overrides the code default.
-ENABLE_ACCOUNT_REGISTRATION=true
-# Browser SSO stays off. OAuth client ids below are for Drive linking until
-# this is set true.
-ENABLE_SSO=false
+# Self-serve account registration (sign-up). Keep false until ready to open
+# public registration; set true in chat_backend_prod.env / chat_backend_beta.env.
+ENABLE_ACCOUNT_REGISTRATION=false
 
 # OAuth SSO — Google / Microsoft (#24). Never commit real secrets.
 # Register redirect URIs:
@@ -97,9 +91,7 @@ OAUTH_CALLBACK_BASE_URL=https://chatbackend.aimloperations.com
 STRIPE_SECRET_KEY=replace-with-stripe-secret-key
 STRIPE_PUBLISHABLE_KEY=replace-with-stripe-publishable-key
 STRIPE_WEBHOOK_SECRET=replace-with-stripe-webhook-secret
-APPLE_IAP_BUNDLE_ID=ai.hesychia.chat
-GOOGLE_PLAY_PACKAGE_NAME=ai.hesychia.chat
-GOOGLE_PLAY_SERVICE_ACCOUNT_JSON=replace-with-play-console-service-account-json
+REVENUECAT_WEBHOOK_SECRET=replace-with-revenuecat-webhook-auth-token
 # REVENUECAT_PRODUCT_PLAN_MAP={"hesychia_founders_monthly":"founders"}
 # Optional: pre-created Stripe Price ID. When empty, Checkout uses
 # SUBSCRIPTION_PRICE_* from settings.py ($10 USD / month by default).

Dockerfile

@@ -9,8 +9,7 @@ ENV PYTHONDONTWRITEBYTECODE=1 \
 WORKDIR /app
 
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends ca-certificates libpq5 \
-    && update-ca-certificates \
+    && apt-get install -y --no-install-recommends libpq5 \
     && rm -rf /var/lib/apt/lists/*
 
 COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv

README.md

@@ -97,12 +97,9 @@ with `COMPOSE_DATABASE_URL` if needed.
 | `SEARXNG_BASE_URL` | `http://127.0.0.1:8088` | yes if using SearxNG | Self-hosted SearxNG JSON API |
 | `EMAIL_HOST_*` | empty | yes (prod/beta) | SMTP2GO |
 | `CAPTCHA_SECRET_KEY` | empty | recommended | |
-| `ENABLE_ACCOUNT_REGISTRATION` | `true` | optional | Password self-serve sign-up. Set `false` to close it |
-| `ENABLE_SSO` | `false` | optional | Google / Microsoft sign-in and sign-up. Drive linking does not need this |
+| `ENABLE_ACCOUNT_REGISTRATION` | `false` | optional | Self-serve sign-up; keep false until ready |
 | `STRIPE_SECRET_KEY` / `STRIPE_PUBLISHABLE_KEY` / `STRIPE_WEBHOOK_SECRET` | empty | yes for billing | Stripe API + webhook (`monetization` app) |
-| `APPLE_IAP_BUNDLE_ID` | `ai.hesychia.chat` | yes for iOS IAP | Must match the signed StoreKit transaction |
-| `GOOGLE_PLAY_PACKAGE_NAME` | `ai.hesychia.chat` | yes for Play IAP | Android application id |
-| `GOOGLE_PLAY_SERVICE_ACCOUNT_JSON` | empty | yes for Play IAP | Play Console service-account JSON (or a file path) |
+| `REVENUECAT_WEBHOOK_SECRET` | empty | yes for store IAP | RevenueCat webhook Authorization bearer |
 | `REVENUECAT_PRODUCT_PLAN_MAP` | empty JSON | optional | `{"product_id":"plan_slug"}` fallback map |
 | `STRIPE_PRICE_ID` | empty | optional | Pre-created Price; else `$10/mo` from settings |
 | `GOOGLE_OAUTH_CLIENT_ID` / `..._SECRET` | empty | for SSO/Drive | Also used for Drive linking (#47), incremental scopes |
@@ -289,14 +286,10 @@ URLs: `/api/monetization/...` and alias `/api/finance/...`.
 (`POST /api/finance/portal/`). Local state syncs via
 `customer.subscription.updated` / `deleted` webhooks.
 
-**Native (Play / App Store):** the app buys through StoreKit or Play Billing,
-then `POST /api/finance/store/confirm/` with the signed App Store transaction
-or the Play purchase token. The backend verifies it (Apple certificate chain,
-or Play Developer API `purchases.subscriptionsv2`) and upserts the ledger.
-`source` is `app_store` or `play_store`. There is no store webhook. Renewals
-are another confirm from the app; access ends when `current_period_end` passes.
-`GET /api/finance/subscription/` includes `store_account_token` to pass into
-the store purchase as `appAccountToken` / `obfuscatedAccountId`.
+**Native (Play / App Store):** RevenueCat webhooks at
+`POST /api/finance/webhooks/revenuecat/` (Authorization bearer =
+`REVENUECAT_WEBHOOK_SECRET`) upsert Invoice/Payment ledger rows and sync
+`UserSubscription` (`source=revenuecat`).
 
 `GET /api/finance/subscription/` includes `cancel_at_period_end` and
 `current_period_end` for Account UI messaging.

llm_be/chat_backend/consumers.py

@@ -1,4 +1,5 @@
 import json
+import base64
 import logging
 import pandas as pd
 from datetime import datetime
@@ -13,7 +14,6 @@ from langchain_core.messages import HumanMessage, AIMessage
 from langchain_community.vectorstores import Chroma
 from langchain_ollama import OllamaEmbeddings
 from chat_backend.ollama_config import (
-    ROLE_VISION,
     ollama_embeddings_kwargs,
     ollama_model_for_role,
     resolve_chat_role,
@@ -38,7 +38,6 @@ from .services.title_generator import title_generator
 from .services.moderation_classifier import moderation_classifier, ModerationLabel
 from .services.prompt_classifier.prompt_classifier import PromptClassifier, PromptType
 from .services.data_analysis_service import AsyncDataAnalysisService
-from .services.vision import AsyncVisionService, is_image_type, prepare_attachment
 from .services.grounded_chat import prepare_grounded_chat
 from .services.status_context import (
     emit_status,
@@ -143,10 +142,7 @@ def get_messages(conversation_id, prompt, file_string: str = None, file_type: st
             prompt_instance.file_type = file_type
             prompt_instance.save()
 
-    for prompt_obj in (
-        Prompt.objects.filter(conversation__id=conversation_id)
-        .order_by("created", "id")
-    ):
+    for prompt_obj in Prompt.objects.filter(conversation__id=conversation_id):
         messages.append(
             {
                 "content": prompt_obj.message,
@@ -282,9 +278,7 @@ async def get_conversation_file_async(conversation_id):
         # Get the very first prompt in the conversation that has a file
         prompt_with_file = await Prompt.objects.filter(
             conversation_id=conversation_id
-        ).exclude(file='').exclude(
-            file_type__in=["png", "jpeg", "jpg", "webp", "gif"]
-        ).order_by('created').afirst()
+        ).exclude(file='').order_by('created').afirst()
 
         if prompt_with_file and prompt_with_file.file:
             # Opening a DatabaseStorage file hits the DB, so read inside the thread.
@@ -420,19 +414,29 @@ class ChatConsumerAgain(AsyncWebsocketConsumer):
                 decoded_file = None
 
                 if file:
-                    decoded_file, file_type, attachment_error = prepare_attachment(
-                        file, file_type
-                    )
-                    if attachment_error:
-                        await self.send_json_message(
-                            json.dumps(
-                                {
-                                    "type": "error",
-                                    "content": attachment_error,
-                                }
-                            )
-                        )
-                        return
+                    decoded_file = base64.b64decode(file)
+                    logger.debug(decoded_file)
+                    # The `altered_message` should only be created if a file exists
+                    # and you want to pass its content directly to the classifier.
+                    # Here, we'll let the classifier decide based on the user's prompt
+                    # and then handle the file content separately.
+                    altered_message = message
+                    if "csv" in file_type:
+                        file_type = "csv"
+                        #altered_message = f"{message}\n The file type is csv and the file contents are: {decoded_file}"
+                    elif "xmlformats-officedocument" in file_type:
+                        file_type = "xlsx"
+                        #df = pd.read_excel(decoded_file)
+                        #altered_message = f"{message}\n The file type is xlsx and the file contents are: {df}"
+                    elif "word" in file_type:
+                        file_type = "docx"
+                    elif "pdf" in file_type:
+                        file_type = "pdf"
+                    elif "text" in file_type:
+                        file_type = "txt"
+                        #altered_message = f"{message}\n The file type is txt and the file contents are: {decoded_file}"
+                    else:
+                        file_type = "Not Sure"
 
                 logger.info(f'received: "{message}" for conversation {conversation_id}')
 
@@ -472,15 +476,6 @@ class ChatConsumerAgain(AsyncWebsocketConsumer):
                     decoded_file = input_dict.get("decoded_file")
                     file_type = input_dict.get("file_type")
                     
-                    if is_image_type(file_type) and decoded_file:
-                        service = AsyncVisionService()
-                        input_dict["_resolved_model"] = service.model_name
-                        input_dict["_citations"] = []
-                        await emit_status("reading_image")
-                        return service.generate_response(
-                            prompt_instance.message, decoded_file, file_type
-                        )
-
                     # Feature Flag + plan gate: Image Generation
                     if prompt_type == PromptType.IMAGE_GENERATION:
                         if not getattr(settings, "ALLOW_IMAGE_GENERATION", False):
@@ -608,9 +603,7 @@ class ChatConsumerAgain(AsyncWebsocketConsumer):
                      #    messages = messages[:-1] + [HumanMessage(content=altered_message)]
                      # I'll add it to the input_dict if needed.
 
-                resolved_model = ollama_model_for_role(
-                    ROLE_VISION if is_image_type(file_type) else resolve_chat_role(model)
-                )
+                resolved_model = ollama_model_for_role(resolve_chat_role(model))
                 prompt_metric = await create_prompt_metric(
                     prompt_instance.id,
                     prompt_instance.message,

llm_be/chat_backend/consumers_graph.py

@@ -1,4 +1,5 @@
 import json
+import base64
 import logging
 import pandas as pd
 from datetime import datetime
@@ -28,7 +29,6 @@ from .services.title_generator import title_generator
 from .services.moderation_classifier import moderation_classifier, ModerationLabel
 from .services.prompt_classifier.prompt_classifier import PromptClassifier, PromptType
 from .services.data_analysis_service import AsyncDataAnalysisService
-from .services.vision import AsyncVisionService, is_image_type, prepare_attachment
 from .services.grounded_chat import prepare_grounded_chat
 from .services.status_context import (
     emit_status,
@@ -36,11 +36,7 @@ from .services.status_context import (
     set_status_emitter,
 )
 from .services.ws_frames import citations_frame, status_frame
-from chat_backend.ollama_config import (
-    ROLE_VISION,
-    ollama_model_for_role,
-    resolve_chat_role,
-)
+from chat_backend.ollama_config import ollama_model_for_role, resolve_chat_role
 from .utils import (
     TokenUsageCollector,
     aiter_text_chunks,
@@ -126,10 +122,7 @@ def get_messages(conversation_id, prompt, file_string: str = None, file_type: st
             prompt_instance.file_type = file_type
             prompt_instance.save()
 
-    for prompt_obj in (
-        Prompt.objects.filter(conversation__id=conversation_id)
-        .order_by("created", "id")
-    ):
+    for prompt_obj in Prompt.objects.filter(conversation__id=conversation_id):
         messages.append(
             {
                 "content": prompt_obj.message,
@@ -209,9 +202,7 @@ async def get_conversation_file_async(conversation_id):
     try:
         prompt_with_file = await Prompt.objects.filter(
             conversation_id=conversation_id
-        ).exclude(file='').exclude(
-            file_type__in=["png", "jpeg", "jpg", "webp", "gif"]
-        ).order_by('created').afirst()
+        ).exclude(file='').order_by('created').afirst()
 
         if prompt_with_file and prompt_with_file.file:
             # Opening a DatabaseStorage file hits the DB, so read inside the thread.
@@ -259,10 +250,6 @@ async def classification_node(state: ChatState) -> ChatState:
     
     prompt_type = await PROMPT_CLASSIFIER.classify_async(msg)
     
-    # Images are read by the vision model, not the spreadsheet parser.
-    if is_image_type(state.get("file_type")):
-        return {"prompt_type": PromptType.GENERAL_CHAT}
-
     # Override logic
     if decoded_file and (prompt_type == PromptType.DATA_ANALYSIS or 'analyze' in msg.lower() or 'data' in msg.lower()):
         prompt_type = PromptType.DATA_ANALYSIS
@@ -283,17 +270,6 @@ async def generation_node(state: ChatState) -> ChatState:
     decoded_file = state.get("decoded_file")
     file_type = state.get("file_type")
     
-    if is_image_type(file_type) and decoded_file:
-        service = AsyncVisionService()
-        await emit_status("reading_image")
-        generator = service.generate_response(
-            prompt_instance.message, decoded_file, file_type
-        )
-        return {
-            "response_generator": generator,
-            "resolved_model": service.model_name,
-        }
-
     # Feature Flag + plan gate: Image Generation
     if prompt_type == PromptType.IMAGE_GENERATION:
         if not getattr(settings, "ALLOW_IMAGE_GENERATION", False):
@@ -509,19 +485,13 @@ class ChatConsumerGraph(AsyncWebsocketConsumer):
                 print("Conversation ID: ", conversation_id)
                 decoded_file = None
                 if file:
-                    decoded_file, file_type, attachment_error = prepare_attachment(
-                        file, file_type
-                    )
-                    if attachment_error:
-                        await self.send_json_message(
-                            json.dumps(
-                                {
-                                    "type": "error",
-                                    "content": attachment_error,
-                                }
-                            )
-                        )
-                        return
+                    decoded_file = base64.b64decode(file)
+                    if "csv" in file_type: file_type = "csv"
+                    elif "xmlformats-officedocument" in file_type: file_type = "xlsx"
+                    elif "word" in file_type: file_type = "docx"
+                    elif "pdf" in file_type: file_type = "pdf"
+                    elif "text" in file_type: file_type = "txt"
+                    else: file_type = "Not Sure"
 
                 # Pre-fetch messages and file
                 messages, prompt_instance = await get_messages(
@@ -531,9 +501,7 @@ class ChatConsumerGraph(AsyncWebsocketConsumer):
                 if not decoded_file:
                     decoded_file, file_type = await get_conversation_file_async(conversation_id)
 
-                resolved_model = ollama_model_for_role(
-                    ROLE_VISION if is_image_type(file_type) else resolve_chat_role(model)
-                )
+                resolved_model = ollama_model_for_role(resolve_chat_role(model))
                 prompt_metric = await create_prompt_metric(
                     prompt_instance.id,
                     prompt_instance.message,
@@ -588,7 +556,7 @@ class ChatConsumerGraph(AsyncWebsocketConsumer):
                     citations = []
                     final_model = resolved_model
 
-                    if should_use_agent(message) and not is_image_type(file_type):
+                    if should_use_agent(message):
                         try:
                             await enforce_feature_gate(chat_user, "agentic_tasks")
                         except FeatureNotAllowed as exc:

llm_be/chat_backend/migrations/0034_waitlistentry.py

@@ -7,7 +7,7 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
 
     dependencies = [
-        ("chat_backend", "0034_customuser_use_conversation_context"),
+        ("chat_backend", "0033_agentrun_agentstep"),
     ]
 
     operations = [

llm_be/chat_backend/migrations/0036_enable_conversation_context.py

@@ -1,36 +0,0 @@
-from django.db import migrations, models
-
-
-def enable_same_chat_history(apps, schema_editor):
-    """Turn on thread history for accounts still on the old default (#84).
-
-    The column defaulted to false, so an explicit opt-out cannot be told apart
-    from "never touched". Follow-ups were ignoring the open chat. Accounts that
-    still want one-shot answers can turn the setting off again.
-    """
-    CustomUser = apps.get_model("chat_backend", "CustomUser")
-    CustomUser.objects.filter(use_conversation_context=False).update(
-        use_conversation_context=True
-    )
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ("chat_backend", "0035_waitlistentry"),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name="customuser",
-            name="use_conversation_context",
-            field=models.BooleanField(
-                default=True,
-                help_text=(
-                    "When enabled, earlier turns in the open chat are included "
-                    "when answering a follow-up. Turn off to answer each message alone."
-                ),
-            ),
-        ),
-        migrations.RunPython(enable_same_chat_history, migrations.RunPython.noop),
-    ]

llm_be/chat_backend/models.py

@@ -74,10 +74,10 @@ class CustomUser(AbstractUser):
         default=True, help_text="How the conversations should display"
     )
     use_conversation_context = models.BooleanField(
-        default=True,
+        default=False,
         help_text=(
-            "When enabled, earlier turns in the open chat are included "
-            "when answering a follow-up. Turn off to answer each message alone."
+            "When enabled, prior turns in the conversation are used as "
+            "LLM/RAG context for a more tailored experience"
         ),
     )
 
@@ -525,7 +525,9 @@ class DriveConnection(TimeInfoBase):
         help_text="Required for company connections; optional for personal (#55).",
     )
     provider = models.CharField(max_length=32, choices=Provider.choices)
-    kind = models.CharField(max_length=16, choices=Kind.choices, default=Kind.PERSONAL)
+    kind = models.CharField(
+        max_length=16, choices=Kind.choices, default=Kind.PERSONAL
+    )
     access_token = models.TextField(blank=True, default="")
     refresh_token = models.TextField(blank=True, default="")
     token_expires_at = models.DateTimeField(null=True, blank=True)

llm_be/chat_backend/oauth.py

@@ -459,8 +459,8 @@ def resolve_user_from_profile(
         upsert_identity(email_user, profile)
         return email_user, False
 
-    # New account path. Password registration does not enable SSO sign-up.
-    allow_create = settings.ENABLE_ACCOUNT_REGISTRATION and settings.ENABLE_SSO
+    # New account path
+    allow_create = settings.ENABLE_ACCOUNT_REGISTRATION
     if intent == "signup" and not allow_create:
         raise OAuthError("registration_disabled", "Account registration is disabled.")
     if intent == "login" and not allow_create:

llm_be/chat_backend/ollama_config.py

@@ -17,8 +17,6 @@ ROLE_EMBED = "embed"
 # independent plan steps concurrently on a smaller/cheaper model.
 ROLE_ORCHESTRATOR = "orchestrator"
 ROLE_SUBAGENT = "subagent"
-# Image + prompt turns (#128). Never falls back to the text chat model.
-ROLE_VISION = "vision"
 
 _VALID_ROLES = {
     ROLE_THINKING,
@@ -27,7 +25,6 @@ _VALID_ROLES = {
     ROLE_EMBED,
     ROLE_ORCHESTRATOR,
     ROLE_SUBAGENT,
-    ROLE_VISION,
 }
 
 
@@ -59,7 +56,6 @@ def ollama_model_for_role(role: str) -> str:
         ROLE_EMBED: "OLLAMA_EMBED_MODEL",
         ROLE_ORCHESTRATOR: "OLLAMA_MODEL_ORCHESTRATOR",
         ROLE_SUBAGENT: "OLLAMA_MODEL_SUBAGENT",
-        ROLE_VISION: "OLLAMA_MODEL_VISION",
     }[role]
     role_default = {
         ROLE_THINKING: "gpt-oss:20b",
@@ -68,15 +64,14 @@ def ollama_model_for_role(role: str) -> str:
         ROLE_EMBED: "nomic-embed-text",
         ROLE_ORCHESTRATOR: "gpt-oss:20b",
         ROLE_SUBAGENT: "llama3.2",
-        ROLE_VISION: "gemma4:latest",
     }[role]
 
     configured = getattr(settings, role_setting, None)
     if configured:
         return configured
 
-    # Embeddings and vision must never silently fall back to a text chat model.
-    if role in (ROLE_EMBED, ROLE_VISION):
+    # Embeddings must never silently fall back to a chat model (#62).
+    if role == ROLE_EMBED:
         return role_default
 
     legacy = getattr(settings, "OLLAMA_MODEL", None)
@@ -99,8 +94,6 @@ def ollama_num_ctx_for_role(role: str) -> int:
         return int(getattr(settings, "OLLAMA_NUM_CTX_SUBAGENT", 8192) or 8192)
     if role == ROLE_ORCHESTRATOR:
         return int(getattr(settings, "OLLAMA_NUM_CTX_ORCHESTRATOR", 16384) or 16384)
-    if role == ROLE_VISION:
-        return int(getattr(settings, "OLLAMA_NUM_CTX_VISION", 8192) or 8192)
     return int(getattr(settings, "OLLAMA_NUM_CTX_THINKING", 16384) or 16384)
 
 

llm_be/chat_backend/serializers.py

@@ -257,7 +257,6 @@ class PromptSerializer(serializers.ModelSerializer):
     tokens_in = serializers.SerializerMethodField()
     tokens_out = serializers.SerializerMethodField()
     feedback = serializers.SerializerMethodField()
-    image = serializers.SerializerMethodField()
 
     class Meta:
         model = Prompt
@@ -270,10 +269,8 @@ class PromptSerializer(serializers.ModelSerializer):
             "tokens_out",
             "citations",
             "feedback",
-            "file_type",
-            "image",
         )
-        read_only_fields = ("citations", "feedback", "file_type", "image")
+        read_only_fields = ("citations", "feedback")
 
     def _token_pair(self, obj):
         cache = self.context.setdefault("_prompt_token_cache", {})
@@ -317,11 +314,6 @@ class PromptSerializer(serializers.ModelSerializer):
             self.context["_prompt_feedback_by_id"] = by_prompt
         return by_prompt.get(obj.id)
 
-    def get_image(self, obj):
-        from chat_backend.services.vision import image_base64
-
-        return image_base64(obj)
-
     def validate_message(self, value: str) -> str:
         if value is None or not str(value).strip():
             raise serializers.ValidationError("Message text cannot be empty.")

llm_be/chat_backend/services/assistant_identity.py

@@ -13,18 +13,12 @@ ASSISTANT_SYSTEM_PROMPT = (
 )
 
 GROUNDED_ANSWER_INSTRUCTIONS = (
-    "You may have numbered live sources and the conversation so far. "
-    "Use the conversation for follow-ups: explain a previous answer, reformat it "
-    "(including a table of items already named), and reply to lines such as "
-    '"I don\'t know, why?". Do not say that list or answer is missing when it '
-    "is already in the conversation. "
-    "Cite source indexes inline like [1] or [2] only for facts taken from live sources. "
-    "If a new external fact (price, rating, date, news) is in neither the conversation "
-    "nor the sources, say that specific fact is unavailable, and still complete the "
-    "part the conversation already answers. "
+    "You have been given numbered live sources. Answer ONLY from those sources. "
+    "Cite source indexes inline like [1] or [2]. "
+    "If the sources do not settle the question, say so explicitly — do not fill "
+    "gaps from memory or training data. "
     "When sources conflict, prefer the most recent dated source. "
-    "Never invent a date, number, name, or event that is in neither the conversation "
-    "nor the sources."
+    "Never state a date, number, name, or event that does not appear in the sources."
 )
 
 RETRIEVAL_FAILED_MESSAGE = (

llm_be/chat_backend/services/grounded_chat.py

@@ -88,8 +88,8 @@ async def prepare_grounded_chat(
     ``on_status(stage, detail)`` emits live activity frames (#96) when provided;
     otherwise uses the context-bound emitter from :mod:`status_context`.
 
-    ``use_conversation_context`` gates prior-turn history in the LLM prompt.
-    The account setting defaults on so follow-ups see this chat (#84).
+    ``use_conversation_context`` gates prior-turn history in the LLM prompt
+    (#33); default off (opt-in).
     """
     gen_kwargs = {"use_conversation_context": use_conversation_context}
     internet = getattr(settings, "ALLOW_INTERNET_ACCESS", False)
@@ -104,9 +104,7 @@ async def prepare_grounded_chat(
         )
 
     await _emit(on_status, "evaluating")
-    # Prior turns exist once the current user message is not the only row.
-    has_history = bool(use_conversation_context) and len(messages) > 1
-    decision = await grounding_decider.decide_async(message, has_history=has_history)
+    decision = await grounding_decider.decide_async(message)
 
     if not decision.needs_retrieval:
         await _emit(on_status, "refining")

llm_be/chat_backend/services/grounding_decider.py

@@ -43,28 +43,6 @@ _TEMPORAL_PATTERNS = (
 _TEMPORAL_RE = re.compile("|".join(_TEMPORAL_PATTERNS), re.IGNORECASE)
 _YEAR_RE = re.compile(r"\b((?:19|20)\d{2})\b")
 
-# Pure follow-ups should reuse the open chat, not a fresh web search (#84).
-_PURE_FOLLOWUP_RE = re.compile(
-    r"("
-    r"\bi don'?t know\b"
-    r"|^\s*why\b"
-    r"|\bwhy\s*\??\s*$"
-    r"|\bwhat do you mean\b"
-    r"|\bexplain\b"
-    r"|\b(that|this|the|your) (list|joke|answer|setup|punchline)\b"
-    r"|\bmake (that|this|it|them)\b"
-    r"|\bput (that|this|it|them)\b"
-    r"|\bin a table\b"
-    r"|\binto a table\b"
-    r")",
-    re.IGNORECASE,
-)
-# These still need live sources even when the sentence points at earlier turns.
-_NEW_EXTERNAL_FACT_RE = re.compile(
-    r"\b(price|prices|rating|ratings|cost|costs|review|reviews|cheapest)\b",
-    re.IGNORECASE,
-)
-
 
 @dataclass
 class GroundingDecision:
@@ -129,28 +107,6 @@ message). Example: "did Taylor Swift get married" →
             source="prepass",
         )
 
-    def followup_prepass(
-        self, prompt: str, *, has_history: bool
-    ) -> GroundingDecision | None:
-        """Skip web search when the line only continues the open chat (#84)."""
-        if not has_history:
-            return None
-        text = (prompt or "").strip()
-        if not text or not _PURE_FOLLOWUP_RE.search(text):
-            return None
-        if _NEW_EXTERNAL_FACT_RE.search(text):
-            return None
-        temporal = self.temporal_prepass(text)
-        if temporal is not None and temporal.needs_retrieval:
-            return None
-        return GroundingDecision(
-            needs_retrieval=False,
-            reason="follow-up on the current conversation",
-            queries=[],
-            temporal=False,
-            source="prepass",
-        )
-
     def _parse(self, raw: str, fallback_query: str) -> GroundingDecision:
         text = (raw or "").strip()
         # Strip markdown fences if the small model wraps JSON.
@@ -188,12 +144,7 @@ message). Example: "did Taylor Swift get married" →
             source="model",
         )
 
-    async def decide_async(
-        self, prompt: str, *, has_history: bool = False
-    ) -> GroundingDecision:
-        follow = self.followup_prepass(prompt, has_history=has_history)
-        if follow is not None:
-            return follow
+    async def decide_async(self, prompt: str) -> GroundingDecision:
         pre = self.temporal_prepass(prompt)
         # Even on temporal prepass, ask the model for better queries when possible.
         try:
@@ -222,10 +173,7 @@ message). Example: "did Taylor Swift get married" →
             )
         return decision
 
-    def decide(self, prompt: str, *, has_history: bool = False) -> GroundingDecision:
-        follow = self.followup_prepass(prompt, has_history=has_history)
-        if follow is not None:
-            return follow
+    def decide(self, prompt: str) -> GroundingDecision:
         pre = self.temporal_prepass(prompt)
         try:
             raw = self.chain.invoke({"prompt": prompt})

llm_be/chat_backend/services/llm_service.py

@@ -173,12 +173,16 @@ Response:"""
         block (when grounded) is never trimmed.
         """
         sources = self.sources_block or kwargs.get("sources_block", "") or ""
-        use_conversation_context = bool(kwargs.get("use_conversation_context", False))
+        use_conversation_context = bool(
+            kwargs.get("use_conversation_context", False)
+        )
         history_text = ""
         if use_conversation_context:
             reserved = (
                 estimate_tokens(ASSISTANT_SYSTEM_PROMPT)
-                + estimate_tokens(GROUNDED_ANSWER_INSTRUCTIONS if self.grounded else "")
+                + estimate_tokens(
+                    GROUNDED_ANSWER_INSTRUCTIONS if self.grounded else ""
+                )
                 + estimate_tokens(sources)
                 + estimate_tokens(query)
                 + 256  # response headroom / instructions
@@ -199,9 +203,8 @@ Response:"""
                     and str(getattr(m, "content", "")).startswith("Live sources:")
                 )
             ]
-            # Current user turn is passed as {query}. Drop that text, not
-            # whichever row happens to be last.
-            prior = prior_turns(clean, query)
+            # Exclude the latest user turn from history (it's in {query}).
+            prior = clean[:-1] if clean else []
             windowed = window_history(
                 prior, budget_tokens=history_budget, reserved_tokens=0
             )
@@ -217,33 +220,6 @@ Response:"""
             yield chunk
 
 
-def message_text(message) -> str:
-    text = getattr(message, "content", "") or ""
-    if not isinstance(text, str):
-        text = str(text)
-    return text
-
-
-def prior_turns(messages, query: str) -> list:
-    """Drop the current user turn from history.
-
-    Match the query text, newest hit first, so an unordered transcript cannot
-    drop a different turn just because it sits at the end of the list (#84).
-    If the query is not in the list, keep every turn.
-    """
-    if not messages:
-        return []
-    needle = (query or "").strip()
-    for index in range(len(messages) - 1, -1, -1):
-        message = messages[index]
-        if (
-            getattr(message, "type", "") == "human"
-            and message_text(message).strip() == needle
-        ):
-            return list(messages[:index]) + list(messages[index + 1 :])
-    return list(messages)
-
-
 def build_chat_service(
     *,
     model_name: str | None,

llm_be/chat_backend/services/vision.py

@@ -1,186 +0,0 @@
-"""Image attachments on a chat turn (chat_web_app#128).
-
-Document uploads stay on the csv/xlsx/pdf path. An image is stored on the
-prompt and sent to a vision-capable Ollama model with the user's text.
-"""
-
-from __future__ import annotations
-
-import base64
-import json
-import logging
-
-import httpx
-
-from chat_backend.ollama_config import (
-    ROLE_VISION,
-    ollama_base_url,
-    ollama_model_for_role,
-    ollama_num_ctx_for_role,
-)
-
-logger = logging.getLogger(__name__)
-
-MAX_IMAGE_BYTES = 8 * 1024 * 1024
-
-IMAGE_MIME = {
-    "png": "image/png",
-    "jpeg": "image/jpeg",
-    "jpg": "image/jpeg",
-    "webp": "image/webp",
-    "gif": "image/gif",
-}
-
-_IMAGE_EXTENSIONS = frozenset(IMAGE_MIME)
-
-
-class VisionChunk:
-    """Stream piece that ``chunk_text`` and ``extract_token_usage`` both read."""
-
-    def __init__(self, text: str = "", info: dict | None = None):
-        self.content = text
-        self.generation_info = info or None
-
-
-def canonical_file_type(file_type: str) -> str:
-    """Map a browser MIME (or short extension) to the stored file_type.
-
-    Order matches the historical websocket normalizer so spreadsheets that
-    share the openxml MIME family still land on ``xlsx``.
-    """
-    lowered = (file_type or "").lower()
-    if "csv" in lowered:
-        return "csv"
-    if "xmlformats-officedocument" in lowered:
-        return "xlsx"
-    if "word" in lowered:
-        return "docx"
-    if "pdf" in lowered:
-        return "pdf"
-    if "text" in lowered:
-        return "txt"
-    if "png" in lowered:
-        return "png"
-    if "jpeg" in lowered or "jpg" in lowered:
-        return "jpeg"
-    if "webp" in lowered:
-        return "webp"
-    if "gif" in lowered:
-        return "gif"
-    if lowered.startswith("image/"):
-        return "unsupported_image"
-    return "Not Sure"
-
-
-def is_image_type(file_type: str | None) -> bool:
-    return (file_type or "").lower() in _IMAGE_EXTENSIONS
-
-
-def image_mime(file_type: str | None) -> str:
-    return IMAGE_MIME.get((file_type or "").lower(), "application/octet-stream")
-
-
-def prepare_attachment(file_b64: str, file_type: str) -> tuple[bytes, str, str | None]:
-    """Decode an upload. ``error`` is a user-facing string when the image is rejected."""
-    try:
-        decoded = base64.b64decode(file_b64, validate=False)
-    except Exception:
-        return b"", "Not Sure", "Could not read the attached file."
-
-    canonical = canonical_file_type(file_type)
-    if canonical == "unsupported_image":
-        return (
-            decoded,
-            canonical,
-            "Unsupported image. Use PNG, JPEG, WebP, or GIF.",
-        )
-    if is_image_type(canonical) and len(decoded) > MAX_IMAGE_BYTES:
-        return (
-            decoded,
-            canonical,
-            "Image is too large. Maximum size is 8 MB.",
-        )
-    return decoded, canonical, None
-
-
-def image_base64(prompt) -> str | None:
-    """Base64 of a stored prompt image, or None for non-images."""
-    if not is_image_type(getattr(prompt, "file_type", None)):
-        return None
-    if not prompt.file_exists():
-        return None
-    try:
-        data = prompt.file.read()
-    except Exception:
-        logger.exception(
-            "failed to read prompt image prompt_id=%s", getattr(prompt, "id", None)
-        )
-        return None
-    if not data:
-        return None
-    if isinstance(data, str):
-        data = data.encode()
-    return base64.b64encode(data).decode("ascii")
-
-
-class AsyncVisionService:
-    """Stream an answer from Ollama's chat API with one image."""
-
-    def __init__(self):
-        self.model_name = ollama_model_for_role(ROLE_VISION)
-        self.num_ctx = ollama_num_ctx_for_role(ROLE_VISION)
-
-    async def generate_response(self, query: str, image_bytes: bytes, file_type: str):
-        payload = {
-            "model": self.model_name,
-            "stream": True,
-            "options": {"num_ctx": self.num_ctx},
-            "messages": [
-                {
-                    "role": "user",
-                    "content": (
-                        "The user attached an image. Answer their question using what "
-                        "is visible in the image, including any text in it.\n\n"
-                        f"{query}"
-                    ),
-                    "images": [base64.b64encode(image_bytes).decode("ascii")],
-                }
-            ],
-        }
-        url = f"{ollama_base_url().rstrip('/')}/api/chat"
-        try:
-            async with httpx.AsyncClient(timeout=httpx.Timeout(180.0)) as client:
-                async with client.stream("POST", url, json=payload) as response:
-                    if response.status_code >= 400:
-                        body = await response.aread()
-                        logger.error(
-                            "vision model rejected request status=%s body=%s",
-                            response.status_code,
-                            body[:500],
-                        )
-                        yield VisionChunk(
-                            text="The vision model could not read that image."
-                        )
-                        return
-                    async for line in response.aiter_lines():
-                        if not line:
-                            continue
-                        try:
-                            event = json.loads(line)
-                        except json.JSONDecodeError:
-                            continue
-                        message = event.get("message") or {}
-                        text = message.get("content") or ""
-                        if text:
-                            yield VisionChunk(text=text)
-                        if event.get("done"):
-                            info = {
-                                key: event[key]
-                                for key in ("prompt_eval_count", "eval_count")
-                                if key in event
-                            }
-                            if info:
-                                yield VisionChunk(info=info)
-        except httpx.HTTPError:
-            logger.exception("vision request failed model=%s", self.model_name)
-            yield VisionChunk(text="The vision model could not read that image.")

llm_be/chat_backend/services/ws_frames.py

@@ -23,7 +23,6 @@ STATUS_LABELS: dict[str, str] = {
     "reading_sources": "Reading sources",
     "retrieving_docs": "Searching your documents",
     "analysing": "Analysing your file",
-    "reading_image": "Reading your image",
     "refining": "Refining the answer",
     "writing": "",  # tokens streaming — no label
 }

llm_be/chat_backend/tests/test_consumers.py

@@ -1,11 +1,9 @@
-import json
-from datetime import timedelta
 from unittest import mock
+import json
 
 from asgiref.sync import sync_to_async
 from channels.testing import WebsocketCommunicator
 from django.test import TestCase, TransactionTestCase, override_settings
-from django.utils import timezone
 from langchain_core.messages import AIMessage, HumanMessage
 from parameterized import parameterized
 
@@ -49,7 +47,9 @@ class DatabaseHelperTestCase(TransactionTestCase):
 
     @parameterized.expand([("websocket", consumers), ("langgraph", consumers_graph)])
     async def test_get_workspace(self, _name, module):
-        workspace = await module.get_workspace(self.conversation.id, user=self.user)
+        workspace = await module.get_workspace(
+            self.conversation.id, user=self.user
+        )
 
         self.assertEqual(workspace.id, self.workspace.id)
 
@@ -99,29 +99,6 @@ class DatabaseHelperTestCase(TransactionTestCase):
             [type(message) for message in messages], [AIMessage, HumanMessage]
         )
 
-    @parameterized.expand([("websocket", consumers), ("langgraph", consumers_graph)])
-    async def test_get_messages_orders_by_created_not_insert_order(self, _name, module):
-        now = timezone.now()
-        await sync_to_async(Prompt.objects.create)(
-            conversation=self.conversation,
-            message="newer answer",
-            user_created=False,
-            created=now,
-        )
-        await sync_to_async(Prompt.objects.create)(
-            conversation=self.conversation,
-            message="older question",
-            user_created=True,
-            created=now - timedelta(minutes=5),
-        )
-
-        messages, _prompt = await module.get_messages(self.conversation.id, "follow up")
-
-        self.assertEqual(
-            [message.content for message in messages],
-            ["older question", "newer answer", "follow up"],
-        )
-
     async def test_get_messages_stores_attachment_and_inlines_csv(self):
         messages, prompt_instance = await consumers.get_messages(
             self.conversation.id, "analyze this", b"name,sales\nalice,10\n", "csv"
@@ -378,42 +355,6 @@ class GraphNodeTestCase(TransactionTestCase):
             self.prompt.message, b"a,b\n1,2\n", "csv"
         )
 
-    async def test_generation_node_sends_images_to_vision(self):
-        with mock.patch.object(consumers_graph, "AsyncVisionService") as service:
-            service.return_value.model_name = "gemma4:latest"
-            service.return_value.generate_response.return_value = "generator"
-
-            result = await consumers_graph.generation_node(
-                self._state(
-                    prompt_type=PromptType.DATA_ANALYSIS,
-                    message="what does this say?",
-                    decoded_file=b"\x89PNG",
-                    file_type="png",
-                )
-            )
-
-        self.assertEqual(result["response_generator"], "generator")
-        self.assertEqual(result["resolved_model"], "gemma4:latest")
-        service.return_value.generate_response.assert_called_once_with(
-            self.prompt.message, b"\x89PNG", "png"
-        )
-
-    async def test_attached_image_is_not_data_analysis(self):
-        with mock.patch.object(
-            consumers_graph.PROMPT_CLASSIFIER,
-            "classify_async",
-            mock.AsyncMock(return_value=PromptType.DATA_ANALYSIS),
-        ):
-            result = await consumers_graph.classification_node(
-                self._state(
-                    message="analyze this chart",
-                    decoded_file=b"\x89PNG",
-                    file_type="png",
-                )
-            )
-
-        self.assertEqual(result["prompt_type"], PromptType.GENERAL_CHAT)
-
     async def test_generation_node_routes_rag_prompts_with_workspace(self):
         with mock.patch.object(consumers_graph, "AsyncRAGService") as service:
             service.return_value.generate_response.return_value = "generator"
@@ -610,16 +551,13 @@ class WebSocketReceiveGuardTestCase(TransactionTestCase):
         connected, _ = await communicator.connect()
         self.assertTrue(connected)
 
-        with (
-            mock.patch(
+        with mock.patch(
             "chat_backend.consumers.title_generator.generate_async",
             new_callable=mock.AsyncMock,
-            ) as title_chat,
-            mock.patch(
+        ) as title_chat, mock.patch(
             "chat_backend.consumers_graph.title_generator.generate_async",
             new_callable=mock.AsyncMock,
-            ) as title_graph,
-        ):
+        ) as title_graph:
             await communicator.send_json_to({"type": "ping", "email": "a@b.com"})
             # No reply expected; give the event loop a tick.
             self.assertTrue(await communicator.receive_nothing(timeout=0.2))
@@ -638,16 +576,13 @@ class WebSocketReceiveGuardTestCase(TransactionTestCase):
         connected, _ = await communicator.connect()
         self.assertTrue(connected)
 
-        with (
-            mock.patch(
+        with mock.patch(
             "chat_backend.consumers.title_generator.generate_async",
             new_callable=mock.AsyncMock,
-            ) as title_chat,
-            mock.patch(
+        ) as title_chat, mock.patch(
             "chat_backend.consumers_graph.title_generator.generate_async",
             new_callable=mock.AsyncMock,
-            ) as title_graph,
-        ):
+        ) as title_graph:
             await communicator.send_json_to(
                 {"message": "   ", "email": "a@b.com", "conversation_id": None}
             )

llm_be/chat_backend/tests/test_grounding_search.py

@@ -86,25 +86,6 @@ class GroundingPrepassTestCase(SimpleTestCase):
         self.assertEqual(decision.source, "fail_open")
         self.assertEqual(decision.queries, ["fallback query"])
 
-    def test_pure_followup_skips_retrieval_without_calling_model(self):
-        self.decider.chain = mock.Mock()
-        decision = self.decider.decide("I don't know. Why?", has_history=True)
-        self.assertFalse(decision.needs_retrieval)
-        self.assertEqual(decision.reason, "follow-up on the current conversation")
-        self.decider.chain.invoke.assert_not_called()
-
-    def test_followup_without_history_does_not_short_circuit(self):
-        self.assertIsNone(
-            self.decider.followup_prepass("I don't know. Why?", has_history=False)
-        )
-
-    def test_price_followup_still_allows_retrieval(self):
-        decision = self.decider.followup_prepass(
-            "Can you make that list for me and add the prices and ratings in a table",
-            has_history=True,
-        )
-        self.assertIsNone(decision)
-
     def test_decide_fail_open_on_llm_error(self):
         self.decider.chain = mock.Mock()
         self.decider.chain.invoke.side_effect = RuntimeError("ollama down")

llm_be/chat_backend/tests/test_migration_graph.py

@@ -1,16 +0,0 @@
-from django.db import connection
-from django.db.migrations.loader import MigrationLoader
-from django.test import TestCase
-
-
-class MigrationGraphTests(TestCase):
-    def test_chat_backend_has_a_single_leaf(self):
-        loader = MigrationLoader(connection, ignore_no_migrations=True)
-        leaves = [
-            name for app, name in loader.graph.leaf_nodes() if app == "chat_backend"
-        ]
-        self.assertEqual(leaves, ["0036_enable_conversation_context"])
-
-        node = loader.graph.nodes[("chat_backend", "0036_enable_conversation_context")]
-        parents = [name for app, name in node.dependencies if app == "chat_backend"]
-        self.assertEqual(parents, ["0035_waitlistentry"])

llm_be/chat_backend/tests/test_models.py

@@ -81,7 +81,7 @@ class CompanyAndUserTestCase(TestCase):
         self.assertFalse(user.deleted)
         self.assertFalse(user.has_signed_tos)
         self.assertTrue(user.conversation_order)
-        self.assertTrue(user.use_conversation_context)
+        self.assertFalse(user.use_conversation_context)
 
 
 class ConversationAndPromptTestCase(TestCase):

llm_be/chat_backend/tests/test_oauth.py

@@ -24,7 +24,6 @@ OAUTH_SETTINGS = {
     "FRONTEND_BASE_URL": "http://frontend.test",
     "OAUTH_CALLBACK_BASE_URL": "http://backend.test",
     "ENABLE_ACCOUNT_REGISTRATION": True,
-    "ENABLE_SSO": True,
 }
 
 
@@ -54,14 +53,6 @@ class PublicSettingsOAuthTestCase(APITestCase):
         self.assertTrue(response.data["oauth"]["google"])
         self.assertTrue(response.data["oauth"]["microsoft"])
 
-    @override_settings(ENABLE_SSO=False)
-    def test_hides_oauth_when_sso_disabled(self):
-        response = self.client.get(reverse("public_settings"))
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertTrue(response.data["enable_account_registration"])
-        self.assertFalse(response.data["oauth"]["google"])
-        self.assertFalse(response.data["oauth"]["microsoft"])
-
     @override_settings(GOOGLE_OAUTH_CLIENT_ID="", GOOGLE_OAUTH_CLIENT_SECRET="")
     def test_hides_unconfigured_provider(self):
         response = self.client.get(reverse("public_settings"))
@@ -92,15 +83,6 @@ class OAuthStartTestCase(APITestCase):
         )
         self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
 
-    @override_settings(ENABLE_SSO=False)
-    def test_login_and_signup_blocked_when_sso_disabled(self):
-        for intent in ("login", "signup"):
-            response = self.client.get(
-                reverse("oauth_start", kwargs={"provider": "google"}),
-                {"intent": intent},
-            )
-            self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
-
     @override_settings(ENABLE_ACCOUNT_REGISTRATION=False)
     def test_signup_intent_blocked_when_registration_disabled(self):
         response = self.client.get(
@@ -198,17 +180,6 @@ class OAuthCallbackTestCase(APITestCase):
         params = parse_qs(urlparse(response["Location"]).query)
         self.assertEqual(params["error"], ["email_missing"])
 
-    @patch("chat_backend.views_oauth.exchange_code_for_profile")
-    @override_settings(ENABLE_SSO=False)
-    def test_callback_signup_rejected_when_sso_disabled(self, mock_exchange):
-        mock_exchange.return_value = _google_profile()
-
-        response = self._callback(intent="signup")
-        params = parse_qs(urlparse(response["Location"]).query)
-        self.assertEqual(params["error"], ["sso_disabled"])
-        self.assertEqual(CustomUser.objects.count(), 0)
-        mock_exchange.assert_not_called()
-
     @patch("chat_backend.views_oauth.exchange_code_for_profile")
     @override_settings(ENABLE_ACCOUNT_REGISTRATION=False)
     def test_callback_login_without_account_when_registration_off(self, mock_exchange):
@@ -285,15 +256,6 @@ class OAuthStartDriveLinkTestCase(APITestCase):
         )
         self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
 
-    @override_settings(ENABLE_SSO=False)
-    def test_link_drive_still_starts_when_sso_disabled(self):
-        self.client.force_authenticate(user=self.user)
-        response = self.client.get(
-            reverse("oauth_start", kwargs={"provider": "google"}),
-            {"intent": "link_drive"},
-        )
-        self.assertEqual(response.status_code, status.HTTP_302_FOUND)
-
     def test_link_drive_authenticated_redirects_with_drive_scope_and_state(self):
         self.client.force_authenticate(user=self.user)
         response = self.client.get(

llm_be/chat_backend/tests/test_services_llm.py

@@ -1,12 +1,7 @@
 from django.test import SimpleTestCase
 from langchain_core.messages import AIMessage, HumanMessage
 
-from chat_backend.services.assistant_identity import GROUNDED_ANSWER_INSTRUCTIONS
-from chat_backend.services.llm_service import (
-    AsyncLLMService,
-    SyncLLMService,
-    prior_turns,
-)
+from chat_backend.services.llm_service import AsyncLLMService, SyncLLMService
 from chat_backend.services.prompt_budget import format_history, window_history
 
 from .fakes import FakeChain
@@ -41,7 +36,7 @@ class AsyncLLMServiceTestCase(SimpleTestCase):
 
     async def test_generate_response_sends_single_history_window(self):
         self.service.conversation_chain = FakeChain(chunks=["ok"])
-        messages = conversation(4) + [HumanMessage(content="latest")]
+        messages = conversation(4)  # 8 messages
 
         async for _ in self.service.generate_response(
             messages, "latest", 1, use_conversation_context=True
@@ -52,33 +47,10 @@ class AsyncLLMServiceTestCase(SimpleTestCase):
         self.assertEqual(payload["query"], "latest")
         # Latest user turn is in {query}; history is prior turns only, once.
         self.assertIn("history", payload)
-        self.assertNotIn("User: latest", payload["history"])
-        self.assertIn("AI: answer 3", payload["history"])
         self.assertNotIn("recent_conversation", payload)
         self.assertNotIn("conversation", payload)
-        self.assertLessEqual(len(payload["history"].splitlines()), 8)
-
-    async def test_history_drops_matching_turn_even_if_it_is_not_last(self):
-        self.service.conversation_chain = FakeChain(chunks=["ok"])
-        # Unordered transcript: current question is first, older turns follow.
-        messages = [
-            HumanMessage(content="I don't know. Why?"),
-            AIMessage(content="Why did the meditation instructor bring a ladder?"),
-            HumanMessage(content="Tell me a joke"),
-        ]
-
-        async for _ in self.service.generate_response(
-            messages,
-            "I don't know. Why?",
-            1,
-            use_conversation_context=True,
-        ):
-            pass
-
-        history = self.service.conversation_chain.calls[0]["history"]
-        self.assertNotIn("I don't know", history)
-        self.assertIn("Tell me a joke", history)
-        self.assertIn("meditation instructor", history)
+        # 8 messages → drop last (query) → 7 prior lines max in window.
+        self.assertLessEqual(len(payload["history"].splitlines()), 7)
 
     async def test_generate_response_skips_history_when_context_disabled(self):
         self.service.conversation_chain = FakeChain(chunks=["ok"])
@@ -101,9 +73,7 @@ class AsyncLLMServiceTestCase(SimpleTestCase):
         self.assertEqual(self.service.conversation_chain.calls[0]["history"], "")
 
     async def test_grounded_service_includes_sources(self):
-        service = AsyncLLMService(
-            grounded=True, sources_block='[1] "T" — x.com — undated'
-        )
+        service = AsyncLLMService(grounded=True, sources_block='[1] "T" — x.com — undated')
         service.conversation_chain = FakeChain(chunks=["ok"])
 
         async for _ in service.generate_response(
@@ -120,24 +90,6 @@ class SyncLLMServiceTestCase(SimpleTestCase):
         self.assertIsNotNone(SyncLLMService())
 
 
-class PriorTurnsTestCase(SimpleTestCase):
-    def test_grounded_instructions_keep_the_conversation(self):
-        self.assertIn("conversation", GROUNDED_ANSWER_INSTRUCTIONS.lower())
-        self.assertNotIn("Answer ONLY from those sources", GROUNDED_ANSWER_INSTRUCTIONS)
-
-    def test_prior_turns_drops_newest_matching_user_text(self):
-        messages = [
-            HumanMessage(content="I don't know. Why?"),
-            AIMessage(content="the joke"),
-            HumanMessage(content="Tell me a joke"),
-        ]
-        kept = prior_turns(messages, "I don't know. Why?")
-        self.assertEqual(
-            [message.content for message in kept],
-            ["the joke", "Tell me a joke"],
-        )
-
-
 class PromptBudgetTestCase(SimpleTestCase):
     def test_window_history_drops_oldest_first(self):
         messages = [HumanMessage(content="x" * 40) for _ in range(10)]
@@ -147,5 +99,7 @@ class PromptBudgetTestCase(SimpleTestCase):
         self.assertEqual(kept[-1].content, messages[-1].content)
 
     def test_format_history_labels_speakers(self):
-        text = format_history([HumanMessage(content="hello"), AIMessage(content="hi")])
+        text = format_history(
+            [HumanMessage(content="hello"), AIMessage(content="hi")]
+        )
         self.assertEqual(text, "User: hello\nAI: hi")

llm_be/chat_backend/tests/test_views_conversations.py

@@ -1,7 +1,4 @@
-from datetime import timedelta
-
 from django.urls import reverse
-from django.utils import timezone
 from rest_framework import status
 from rest_framework.test import APITestCase
 
@@ -60,7 +57,7 @@ class ConversationPreferencesTestCase(APITestCase):
 
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertTrue(response.data["order"])
-        self.assertTrue(response.data["use_conversation_context"])
+        self.assertFalse(response.data["use_conversation_context"])
 
     def test_post_toggles_and_persists_order(self):
         response = self.client.post(self.url)
@@ -118,33 +115,8 @@ class ConversationDetailViewTestCase(APITestCase):
             [("hello", True), ("hi there", False)],
         )
 
-    def test_get_returns_prompts_oldest_first_even_if_inserted_newest_first(self):
-        now = timezone.now()
-        make_prompt(
-            self.conversation,
-            message="later",
-            user_created=False,
-            created=now,
-        )
-        make_prompt(
-            self.conversation,
-            message="earlier",
-            user_created=True,
-            created=now - timedelta(minutes=5),
-        )
-
-        response = self.client.get(self.url, {"conversation_id": self.conversation.id})
-
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(
-            [item["message"] for item in response.data],
-            ["earlier", "later"],
-        )
-
     def test_get_rejects_other_users_conversation(self):
-        other = make_user(
-            email="other-tenant@example.com", company=make_company("Other")
-        )
+        other = make_user(email="other-tenant@example.com", company=make_company("Other"))
         foreign = make_conversation(user=other)
         make_prompt(foreign, message="secret")
 

llm_be/chat_backend/tests/test_views_users.py

@@ -115,27 +115,9 @@ class PublicSettingsTestCase(APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response.data["enable_account_registration"], False)
 
-    def test_registration_on_and_sso_hidden_by_default(self):
-        response = self.client.get(reverse("public_settings"))
-
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data["enable_account_registration"], True)
-        self.assertEqual(response.data["oauth"], {"google": False, "microsoft": False})
-
 
 class UserCreateTestCase(APITestCase):
-    def test_registration_enabled_by_default(self):
-        response = self.client.post(
-            reverse("create_user"),
-            {"email": "new@example.com", "password": "securepass1"},
-            format="json",
-        )
-
-        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
-        self.assertTrue(CustomUser.objects.filter(email="new@example.com").exists())
-
-    def test_registration_disabled_when_setting_off(self):
-        with self.settings(ENABLE_ACCOUNT_REGISTRATION=False):
+    def test_registration_disabled_by_default(self):
         response = self.client.post(
             reverse("create_user"),
             {"email": "new@example.com", "password": "securepass1"},

llm_be/chat_backend/tests/test_vision.py

@@ -1,64 +0,0 @@
-import base64
-
-from django.core.files.uploadedfile import SimpleUploadedFile
-from django.test import TestCase
-
-from chat_backend.services.vision import (
-    canonical_file_type,
-    image_base64,
-    is_image_type,
-    prepare_attachment,
-)
-from chat_backend.tests.factories import make_conversation, make_prompt
-
-
-class VisionAttachmentTestCase(TestCase):
-    def test_canonical_types(self):
-        self.assertEqual(canonical_file_type("image/png"), "png")
-        self.assertEqual(canonical_file_type("image/jpeg"), "jpeg")
-        self.assertEqual(canonical_file_type("image/jpg"), "jpeg")
-        self.assertEqual(canonical_file_type("image/webp"), "webp")
-        self.assertEqual(canonical_file_type("image/gif"), "gif")
-        self.assertEqual(canonical_file_type("text/plain"), "txt")
-        self.assertEqual(canonical_file_type("application/pdf"), "pdf")
-        self.assertEqual(canonical_file_type("image/bmp"), "unsupported_image")
-        self.assertEqual(canonical_file_type("image/svg+xml"), "unsupported_image")
-
-    def test_prepare_attachment_rejects_oversize_and_unknown_images(self):
-        png = base64.b64encode(b"\x89PNG").decode()
-        decoded, kind, error = prepare_attachment(png, "image/png")
-        self.assertEqual(decoded, b"\x89PNG")
-        self.assertEqual(kind, "png")
-        self.assertIsNone(error)
-        self.assertTrue(is_image_type(kind))
-
-        huge = base64.b64encode(b"x" * (8 * 1024 * 1024 + 1)).decode()
-        _, _, error = prepare_attachment(huge, "image/png")
-        self.assertIn("too large", error)
-
-        _, _, error = prepare_attachment(png, "image/bmp")
-        self.assertIn("Unsupported image", error)
-
-    def test_document_types_unchanged(self):
-        raw = base64.b64encode(b"a,b\n1,2\n").decode()
-        decoded, kind, error = prepare_attachment(raw, "text/csv")
-        self.assertEqual(kind, "csv")
-        self.assertIsNone(error)
-        self.assertEqual(decoded, b"a,b\n1,2\n")
-        self.assertFalse(is_image_type(kind))
-
-    def test_image_base64_reads_stored_png(self):
-        prompt = make_prompt(make_conversation())
-        prompt.file_type = "png"
-        prompt.file.save("shot.png", SimpleUploadedFile("shot.png", b"\x89PNG"))
-        prompt.save()
-
-        self.assertEqual(image_base64(prompt), base64.b64encode(b"\x89PNG").decode())
-
-    def test_image_base64_skips_documents(self):
-        prompt = make_prompt(make_conversation())
-        prompt.file_type = "csv"
-        prompt.file.save("data.csv", SimpleUploadedFile("data.csv", b"a,b"))
-        prompt.save()
-
-        self.assertIsNone(image_base64(prompt))

llm_be/chat_backend/views.py

@@ -178,7 +178,7 @@ class PublicWaitlistView(APIView):
 
 
 class CustomUserCreate(APIView):
-    """Password self-serve registration. Gated by ENABLE_ACCOUNT_REGISTRATION."""
+    """Self-serve registration. Gated by ENABLE_ACCOUNT_REGISTRATION (default off)."""
 
     permission_classes = (permissions.AllowAny,)
     authentication_classes = ()
@@ -680,7 +680,7 @@ class ConversationDetailView(APIView):
         prompts = list(
             Prompt.objects.filter(
                 conversation__id=conversation_id, conversation__user=request.user
-            ).order_by("created", "id")
+            )
         )
         serializer = PromptSerializer(
             prompts,
@@ -734,7 +734,7 @@ class ConversationDetailView(APIView):
                 messages = []
                 for prompt_obj in Prompt.objects.filter(
                     conversation__id=conversation_id
-                ).order_by("created", "id"):
+                ):
                     messages.append(
                         {
                             "content": prompt_obj.message,

llm_be/chat_backend/views_oauth.py

@@ -102,11 +102,6 @@ class OAuthStartView(APIView):
                 },
                 status=status.HTTP_400_BAD_REQUEST,
             )
-        if intent in {"login", "signup"} and not settings.ENABLE_SSO:
-            return Response(
-                {"detail": "Single sign-on is not enabled."},
-                status=status.HTTP_403_FORBIDDEN,
-            )
         if intent == "signup" and not settings.ENABLE_ACCOUNT_REGISTRATION:
             return Response(
                 {"detail": "Account registration is disabled."},
@@ -189,8 +184,6 @@ class OAuthCallbackView(APIView):
             return self._handle_drive_link_callback(
                 request, provider=provider, code=code, state_data=state_data
             )
-        if not settings.ENABLE_SSO:
-            return _redirect_error("sso_disabled", "Single sign-on is not enabled.")
 
         try:
             redirect_uri = _callback_redirect_uri(request, provider)
@@ -268,7 +261,5 @@ class OAuthCallbackView(APIView):
 
 
 def oauth_public_flags() -> dict:
-    """Feature flags for /public/settings/. SSO buttons stay hidden until ENABLE_SSO."""
-    if not settings.ENABLE_SSO:
-        return {"google": False, "microsoft": False}
+    """Feature flags for /public/settings/."""
     return configured_providers()

llm_be/llm_be/settings.py

@@ -169,10 +169,6 @@ OLLAMA_NUM_CTX_UTILITY = int(env("OLLAMA_NUM_CTX_UTILITY", "4096") or "4096")
 # sub-agents run independent plan steps on a smaller/cheaper model.
 OLLAMA_MODEL_ORCHESTRATOR = env("OLLAMA_MODEL_ORCHESTRATOR", "") or OLLAMA_MODEL
 OLLAMA_MODEL_SUBAGENT = env("OLLAMA_MODEL_SUBAGENT", "") or OLLAMA_MODEL_UTILITY
-# Vision turns (image + prompt). Must be a vision-capable Ollama tag.
-# Empty falls back to gemma4:latest inside ollama_model_for_role, not OLLAMA_MODEL.
-OLLAMA_MODEL_VISION = env("OLLAMA_MODEL_VISION", "") or ""
-OLLAMA_NUM_CTX_VISION = int(env("OLLAMA_NUM_CTX_VISION", "8192") or "8192")
 OLLAMA_NUM_CTX_ORCHESTRATOR = int(
     env("OLLAMA_NUM_CTX_ORCHESTRATOR", "16384") or "16384"
 )
@@ -385,12 +381,9 @@ AGENT_FETCH_URL_MAX_BYTES = int(
     env("AGENT_FETCH_URL_MAX_BYTES", str(2 * 1024 * 1024)) or str(2 * 1024 * 1024)
 )
 
-# Password self-serve sign-up. On by default (#80). Set false in the
-# control-node secret (chat_backend_<env>.env) to close public registration.
-ENABLE_ACCOUNT_REGISTRATION = env_bool("ENABLE_ACCOUNT_REGISTRATION", True)
-# Browser SSO (Google / Microsoft sign-in and sign-up). Off until explicitly
-# enabled. OAuth client ids may still be set for Drive linking (#47).
-ENABLE_SSO = env_bool("ENABLE_SSO", False)
+# Self-serve account registration (sign-up page). Default off — enable via
+# control-node secret (chat_backend_<env>.env) when ready for public sign-up.
+ENABLE_ACCOUNT_REGISTRATION = env_bool("ENABLE_ACCOUNT_REGISTRATION", False)
 
 # ---------------------------------------------------------------------------
 # OAuth SSO (Google / Microsoft) — #24
@@ -415,20 +408,8 @@ STRIPE_WEBHOOK_SECRET = env("STRIPE_WEBHOOK_SECRET", "") or ""
 # price_data built from SUBSCRIPTION_PRICE_* below.
 STRIPE_PRICE_ID = env("STRIPE_PRICE_ID", "") or ""
 
-# Legacy RevenueCat webhook secret. Store grants no longer use that webhook.
+# RevenueCat webhook Authorization bearer secret + optional product→plan map.
 REVENUECAT_WEBHOOK_SECRET = env("REVENUECAT_WEBHOOK_SECRET", "") or ""
-# Native store verification. Apple signed transactions chain to the bundled
-# Apple Root CA G3 unless APPLE_IAP_ROOT_PEM adds another PEM.
-APPLE_IAP_BUNDLE_ID = (
-    env("APPLE_IAP_BUNDLE_ID", "ai.hesychia.chat") or "ai.hesychia.chat"
-)
-APPLE_IAP_ROOT_PEM = env("APPLE_IAP_ROOT_PEM", "") or ""
-GOOGLE_PLAY_PACKAGE_NAME = (
-    env("GOOGLE_PLAY_PACKAGE_NAME", "ai.hesychia.chat") or "ai.hesychia.chat"
-)
-GOOGLE_PLAY_SERVICE_ACCOUNT_JSON = (
-    env("GOOGLE_PLAY_SERVICE_ACCOUNT_JSON", "") or ""
-)
 _rc_product_map_raw = env("REVENUECAT_PRODUCT_PLAN_MAP", "") or ""
 REVENUECAT_PRODUCT_PLAN_MAP: dict = {}
 if _rc_product_map_raw.strip():

llm_be/monetization/certs/apple_root_g3.pem

@@ -1,15 +0,0 @@
------BEGIN CERTIFICATE-----
-MIICQzCCAcmgAwIBAgIILcX8iNLFS5UwCgYIKoZIzj0EAwMwZzEbMBkGA1UEAwwS
-QXBwbGUgUm9vdCBDQSAtIEczMSYwJAYDVQQLDB1BcHBsZSBDZXJ0aWZpY2F0aW9u
-IEF1dGhvcml0eTETMBEGA1UECgwKQXBwbGUgSW5jLjELMAkGA1UEBhMCVVMwHhcN
-MTQwNDMwMTgxOTA2WhcNMzkwNDMwMTgxOTA2WjBnMRswGQYDVQQDDBJBcHBsZSBS
-b290IENBIC0gRzMxJjAkBgNVBAsMHUFwcGxlIENlcnRpZmljYXRpb24gQXV0aG9y
-aXR5MRMwEQYDVQQKDApBcHBsZSBJbmMuMQswCQYDVQQGEwJVUzB2MBAGByqGSM49
-AgEGBSuBBAAiA2IABJjpLz1AcqTtkyJygRMc3RCV8cWjTnHcFBbZDuWmBSp3ZHtf
-TjjTuxxEtX/1H7YyYl3J6YRbTzBPEVoA/VhYDKX1DyxNB0cTddqXl5dvMVztK517
-IDvYuVTZXpmkOlEKMaNCMEAwHQYDVR0OBBYEFLuw3qFYM4iapIqZ3r6966/ayySr
-MA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0PAQH/BAQDAgEGMAoGCCqGSM49BAMDA2gA
-MGUCMQCD6cHEFl4aXTQY2e3v9GwOAEZLuN+yRhHFD/3meoyhpmvOwgPUnPWTxnS4
-at+qIxUCMG1mihDK1A3UT82NQz60imOlM27jbdoXt2QfyFMm+YhidDkLF1vLUagM
-6BgD56KyKA==
------END CERTIFICATE-----

llm_be/monetization/migrations/0006_store_purchase_sources.py

@@ -1,56 +0,0 @@
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ("finance", "0005_revenuecat_fields"),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name="invoice",
-            name="provider",
-            field=models.CharField(
-                choices=[
-                    ("stripe", "Stripe"),
-                    ("revenuecat", "RevenueCat"),
-                    ("app_store", "App Store"),
-                    ("play_store", "Play Store"),
-                ],
-                default="stripe",
-                max_length=32,
-            ),
-        ),
-        migrations.AlterField(
-            model_name="payment",
-            name="provider",
-            field=models.CharField(
-                choices=[
-                    ("stripe", "Stripe"),
-                    ("revenuecat", "RevenueCat"),
-                    ("app_store", "App Store"),
-                    ("play_store", "Play Store"),
-                ],
-                default="stripe",
-                max_length=32,
-            ),
-        ),
-        migrations.AlterField(
-            model_name="usersubscription",
-            name="source",
-            field=models.CharField(
-                choices=[
-                    ("none", "None"),
-                    ("stripe", "Stripe"),
-                    ("revenuecat", "RevenueCat"),
-                    ("app_store", "App Store"),
-                    ("play_store", "Play Store"),
-                    ("backer", "Backer"),
-                    ("admin", "Admin"),
-                ],
-                default="none",
-                max_length=32,
-            ),
-        ),
-    ]

llm_be/monetization/models.py

@@ -134,8 +134,6 @@ class UserSubscription(TimeInfoBase):
         NONE = "none", "None"
         STRIPE = "stripe", "Stripe"
         REVENUECAT = "revenuecat", "RevenueCat"
-        APP_STORE = "app_store", "App Store"
-        PLAY_STORE = "play_store", "Play Store"
         BACKER = "backer", "Backer"
         ADMIN = "admin", "Admin"
 
@@ -216,8 +214,6 @@ class Invoice(TimeInfoBase):
     class Provider(models.TextChoices):
         STRIPE = "stripe", "Stripe"
         REVENUECAT = "revenuecat", "RevenueCat"
-        APP_STORE = "app_store", "App Store"
-        PLAY_STORE = "play_store", "Play Store"
 
     class Status(models.TextChoices):
         DRAFT = "draft", "Draft"
@@ -312,8 +308,6 @@ class Payment(TimeInfoBase):
     class Provider(models.TextChoices):
         STRIPE = "stripe", "Stripe"
         REVENUECAT = "revenuecat", "RevenueCat"
-        APP_STORE = "app_store", "App Store"
-        PLAY_STORE = "play_store", "Play Store"
 
     class Status(models.TextChoices):
         PENDING = "pending", "Pending"

llm_be/monetization/serializers.py

@@ -59,23 +59,8 @@ class PortalSessionSerializer(serializers.Serializer):
     return_url = serializers.URLField(required=False, allow_blank=False)
 
 
-class StorePurchaseConfirmSerializer(serializers.Serializer):
-    store = serializers.ChoiceField(choices=("app_store", "play_store"))
-    product_id = serializers.CharField(max_length=255)
-    transaction_id = serializers.CharField(
-        max_length=255, required=False, allow_blank=True
-    )
-    purchase_token = serializers.CharField(
-        max_length=4096, required=False, allow_blank=True
-    )
-    signed_transaction = serializers.CharField(required=False, allow_blank=True)
-
-
 class SubscriptionPlanSerializer(serializers.ModelSerializer):
     features = serializers.SerializerMethodField()
-    store_product_id = serializers.CharField(
-        source="revenuecat_product_id", read_only=True
-    )
 
     class Meta:
         model = SubscriptionPlan
@@ -93,7 +78,6 @@ class SubscriptionPlanSerializer(serializers.ModelSerializer):
             "prompt_window_hours",
             "monthly_token_quota",
             "sort_order",
-            "store_product_id",
         ]
         read_only_fields = fields
 

llm_be/monetization/services/plans.py

@@ -247,8 +247,6 @@ def needs_checkout(user) -> bool:
         UserSubscription.Source.ADMIN,
         UserSubscription.Source.STRIPE,
         UserSubscription.Source.REVENUECAT,
-        UserSubscription.Source.APP_STORE,
-        UserSubscription.Source.PLAY_STORE,
     ):
         return False
     return True
@@ -459,9 +457,8 @@ def assign_plan_from_revenuecat(
     cancel_at_period_end: bool | None = None,
     current_period_end=None,
     keep_existing_plan_if_unknown: bool = False,
-    source: str | None = None,
 ) -> UserSubscription:
-    """Assign a catalog plan from a verified store purchase."""
+    """Assign a catalog plan from a RevenueCat store purchase event."""
     seed_subscription_plans(update_existing=False)
     existing = (
         UserSubscription.objects.filter(user=user).select_related("plan").first()
@@ -496,7 +493,7 @@ def assign_plan_from_revenuecat(
     sub = assign_plan(
         user,
         plan=plan,
-        source=source or UserSubscription.Source.REVENUECAT,
+        source=UserSubscription.Source.REVENUECAT,
         status=status,
         revenuecat_original_transaction_id=revenuecat_original_transaction_id or "",
         log_auth_event=False,

llm_be/monetization/services/store_purchases.py

@@ -1,617 +0,0 @@
-"""Verify App Store and Play Store purchases and grant entitlements.
-
-The mobile app completes the purchase with StoreKit or Play Billing, then
-POSTs the signed transaction or purchase token. This module checks that
-payload with Apple or Google and writes the subscription ledger. Store
-webhooks are not accepted.
-"""
-
-from __future__ import annotations
-
-import base64
-import json
-import logging
-import time
-import uuid
-from dataclasses import dataclass
-from datetime import datetime, timezone as dt_timezone
-from pathlib import Path
-from typing import Any
-from urllib.parse import quote
-
-import jwt
-import requests
-from cryptography import x509
-from cryptography.hazmat.primitives import hashes
-from cryptography.hazmat.primitives.asymmetric import ec, padding
-from django.conf import settings
-from django.db import transaction
-from django.utils import timezone
-
-from monetization.models import Invoice, Payment, UserSubscription
-from monetization.services.plans import (
-    assign_plan_from_revenuecat,
-    log_subscription_auth_event,
-    resolve_plan_from_revenuecat_product,
-)
-
-logger = logging.getLogger(__name__)
-
-# uuid5(NAMESPACE_URL, this name). Do not change; clients receive the result.
-_STORE_ACCOUNT_NAMESPACE = uuid.uuid5(
-    uuid.NAMESPACE_URL,
-    "https://chat.aimloperations.com/store-account",
-)
-_APP_STORE_CERT_OID = x509.ObjectIdentifier("1.2.840.113635.100.6.11.1")
-_PLAY_SCOPE = "https://www.googleapis.com/auth/androidpublisher"
-_BUNDLED_APPLE_ROOT = (
-    Path(__file__).resolve().parent.parent / "certs" / "apple_root_g3.pem"
-)
-
-_STORE_SOURCES = frozenset(
-    {
-        UserSubscription.Source.APP_STORE,
-        UserSubscription.Source.PLAY_STORE,
-        UserSubscription.Source.REVENUECAT,
-    }
-)
-
-
-class StoreNotConfiguredError(Exception):
-    """Apple or Google credentials required to verify a purchase are missing."""
-
-
-class StorePurchaseRejected(Exception):
-    """The store payload is not an active purchase for this user."""
-
-
-class StoreVerificationError(Exception):
-    """The store API could not be reached."""
-
-
-@dataclass(frozen=True)
-class VerifiedStorePurchase:
-    source: str
-    store_label: str
-    product_id: str
-    transaction_id: str
-    original_transaction_id: str
-    expires_at: datetime | None
-    purchased_at: datetime | None
-    cancel_at_period_end: bool
-    status: str
-    price_cents: int
-    currency: str
-    account_token: str
-
-
-def store_account_token(user_id: int) -> str:
-    """Stable store account id for this user. Pass it to StoreKit and Play."""
-    return str(uuid.uuid5(_STORE_ACCOUNT_NAMESPACE, str(user_id)))
-
-
-def expire_lapsed_store_subscription(sub: UserSubscription | None):
-    """End store access once the verified period has passed.
-
-    Renewals arrive when the app confirms the store entitlement again.
-    """
-    if sub is None or sub.source not in _STORE_SOURCES:
-        return sub
-    if sub.status != UserSubscription.Status.ACTIVE or not sub.current_period_end:
-        return sub
-    if sub.current_period_end > timezone.now():
-        return sub
-    prev_status = sub.status
-    sub.status = UserSubscription.Status.CANCELED
-    sub.cancel_at_period_end = False
-    sub.save(update_fields=["status", "cancel_at_period_end", "last_modified"])
-    if prev_status != UserSubscription.Status.CANCELED:
-        log_subscription_auth_event(
-            sub.user,
-            started=False,
-            detail=(
-                f"plan={sub.plan.slug if sub.plan_id else 'none'} "
-                f"source={sub.source} status={sub.status} "
-                "reason=store_period_ended"
-            ),
-        )
-    return sub
-
-
-def confirm_store_purchase(user, payload: dict[str, Any]) -> UserSubscription:
-    """Verify one store purchase for the authenticated user and grant it."""
-    store = (payload.get("store") or "").strip().lower()
-    product_id = (payload.get("product_id") or "").strip()
-    if store == UserSubscription.Source.APP_STORE:
-        verified = verify_apple_signed_transaction(
-            signed_transaction=(payload.get("signed_transaction") or "").strip(),
-            product_id=product_id,
-            transaction_id=(payload.get("transaction_id") or "").strip(),
-        )
-    elif store == UserSubscription.Source.PLAY_STORE:
-        verified = verify_google_subscription(
-            product_id=product_id,
-            purchase_token=(payload.get("purchase_token") or "").strip(),
-            transaction_id=(payload.get("transaction_id") or "").strip(),
-        )
-    else:
-        raise StorePurchaseRejected("store must be app_store or play_store.")
-    if verified.product_id != product_id:
-        raise StorePurchaseRejected("Store product does not match this purchase.")
-    return grant_verified_store_purchase(user, verified)
-
-
-def verify_apple_signed_transaction(
-    *,
-    signed_transaction: str,
-    product_id: str,
-    transaction_id: str = "",
-) -> VerifiedStorePurchase:
-    """Verify a StoreKit 2 signed transaction against Apple's root."""
-    if not signed_transaction:
-        raise StorePurchaseRejected("App Store purchases require signed_transaction.")
-    bundle_id = (getattr(settings, "APPLE_IAP_BUNDLE_ID", "") or "").strip()
-    if not bundle_id:
-        raise StoreNotConfiguredError("APPLE_IAP_BUNDLE_ID is not configured.")
-    roots = _load_apple_roots()
-    if not roots:
-        raise StoreNotConfiguredError("No Apple root certificate is configured.")
-
-    try:
-        header = jwt.get_unverified_header(signed_transaction)
-    except jwt.PyJWTError as exc:
-        raise StorePurchaseRejected("Invalid App Store signed transaction.") from exc
-    x5c = header.get("x5c") if isinstance(header, dict) else None
-    if not isinstance(x5c, list) or not x5c:
-        raise StorePurchaseRejected("App Store transaction is missing its certificate.")
-    try:
-        certs = [_load_der_cert(item) for item in x5c]
-        leaf = _trusted_leaf(certs, roots)
-    except StorePurchaseRejected:
-        raise
-    except Exception as exc:
-        raise StorePurchaseRejected("App Store certificate chain is not trusted.") from exc
-    _require_app_store_oid(leaf)
-
-    try:
-        claims = jwt.decode(
-            signed_transaction,
-            leaf.public_key(),
-            algorithms=["ES256"],
-            options={"verify_aud": False, "verify_exp": False},
-        )
-    except jwt.PyJWTError as exc:
-        raise StorePurchaseRejected("App Store transaction signature is invalid.") from exc
-    if not isinstance(claims, dict):
-        raise StorePurchaseRejected("App Store transaction payload is invalid.")
-
-    claim_bundle = str(claims.get("bundleId") or "")
-    if claim_bundle != bundle_id:
-        raise StorePurchaseRejected("App Store bundle id does not match this app.")
-    claim_product = str(claims.get("productId") or "")
-    if product_id and claim_product != product_id:
-        raise StorePurchaseRejected("App Store product does not match this purchase.")
-    claim_txn = str(claims.get("transactionId") or "")
-    if transaction_id and claim_txn and transaction_id != claim_txn:
-        raise StorePurchaseRejected("App Store transaction id does not match.")
-    if not claim_txn:
-        raise StorePurchaseRejected("App Store transaction id is missing.")
-
-    expires_at = _ms_to_dt(claims.get("expiresDate"))
-    purchased_at = _ms_to_dt(claims.get("purchaseDate"))
-    revoked = _ms_to_dt(claims.get("revocationDate")) is not None
-    now = timezone.now()
-    if revoked or (expires_at is not None and expires_at <= now):
-        status = UserSubscription.Status.CANCELED
-    else:
-        status = UserSubscription.Status.ACTIVE
-
-    price_cents = 0
-    raw_price = claims.get("price")
-    try:
-        if raw_price is not None:
-            price_cents = max(0, int(raw_price) // 10)
-    except (TypeError, ValueError):
-        price_cents = 0
-    currency = str(claims.get("currency") or "usd").lower()
-    original = str(claims.get("originalTransactionId") or claim_txn)
-    return VerifiedStorePurchase(
-        source=UserSubscription.Source.APP_STORE,
-        store_label="APP_STORE",
-        product_id=claim_product,
-        transaction_id=claim_txn,
-        original_transaction_id=original,
-        expires_at=expires_at,
-        purchased_at=purchased_at,
-        cancel_at_period_end=False,
-        status=status,
-        price_cents=price_cents,
-        currency=currency,
-        account_token=str(claims.get("appAccountToken") or ""),
-    )
-
-
-def verify_google_subscription(
-    *,
-    product_id: str,
-    purchase_token: str,
-    transaction_id: str = "",
-) -> VerifiedStorePurchase:
-    """Verify a Play Billing purchase token with the Android Publisher API."""
-    if not purchase_token:
-        raise StorePurchaseRejected("Play Store purchases require purchase_token.")
-    if not product_id:
-        raise StorePurchaseRejected("Play Store purchases require product_id.")
-    body = fetch_google_subscription(purchase_token)
-    return _verified_from_google(
-        body,
-        product_id=product_id,
-        purchase_token=purchase_token,
-        transaction_id=transaction_id,
-    )
-
-
-def fetch_google_subscription(purchase_token: str) -> dict[str, Any]:
-    """GET purchases.subscriptionsv2 for this token. Tests patch this."""
-    package_name = (getattr(settings, "GOOGLE_PLAY_PACKAGE_NAME", "") or "").strip()
-    raw = (getattr(settings, "GOOGLE_PLAY_SERVICE_ACCOUNT_JSON", "") or "").strip()
-    if not package_name or not raw:
-        raise StoreNotConfiguredError(
-            "Google Play verification is not configured "
-            "(GOOGLE_PLAY_PACKAGE_NAME and GOOGLE_PLAY_SERVICE_ACCOUNT_JSON)."
-        )
-    info = _load_service_account_info(raw)
-    try:
-        access_token = _google_access_token(info)
-        url = (
-            "https://androidpublisher.googleapis.com/androidpublisher/v3/"
-            f"applications/{quote(package_name, safe='')}/purchases/"
-            f"subscriptionsv2/tokens/{quote(purchase_token, safe='')}"
-        )
-        response = requests.get(
-            url,
-            headers={"Authorization": f"Bearer {access_token}"},
-            timeout=15,
-        )
-    except (requests.RequestException, ValueError, OSError) as exc:
-        logger.exception("Play Store verification request failed")
-        raise StoreVerificationError("Play Store verification failed.") from exc
-    if response.status_code == 404:
-        raise StorePurchaseRejected("Play Store purchase was not found.")
-    if response.status_code >= 400:
-        logger.error(
-            "Play Store verification HTTP %s",
-            response.status_code,
-        )
-        if response.status_code >= 500:
-            raise StoreVerificationError("Play Store verification failed.")
-        raise StorePurchaseRejected("Play Store rejected this purchase token.")
-    try:
-        body = response.json()
-    except ValueError as exc:
-        raise StoreVerificationError("Play Store returned an invalid response.") from exc
-    if not isinstance(body, dict):
-        raise StoreVerificationError("Play Store returned an invalid response.")
-    return body
-
-
-def _verified_from_google(
-    body: dict[str, Any],
-    *,
-    product_id: str,
-    purchase_token: str,
-    transaction_id: str,
-) -> VerifiedStorePurchase:
-    line_items = body.get("lineItems") or []
-    match = None
-    if isinstance(line_items, list):
-        for item in line_items:
-            if isinstance(item, dict) and str(item.get("productId") or "") == product_id:
-                match = item
-                break
-    if match is None:
-        raise StorePurchaseRejected("Play Store product does not match this purchase.")
-
-    state = str(body.get("subscriptionState") or "")
-    expires_at = _parse_rfc3339(match.get("expiryTime"))
-    now = timezone.now()
-    expired = expires_at is not None and expires_at <= now
-    cancel_at_period_end = False
-    if state in {"SUBSCRIPTION_STATE_PENDING", "SUBSCRIPTION_STATE_PENDING_PURCHASE_CANCELED"}:
-        raise StorePurchaseRejected("Play Store purchase is still pending.")
-    if state in {"SUBSCRIPTION_STATE_ACTIVE", "SUBSCRIPTION_STATE_IN_GRACE_PERIOD"} and not expired:
-        status = UserSubscription.Status.ACTIVE
-    elif state == "SUBSCRIPTION_STATE_CANCELED" and not expired:
-        status = UserSubscription.Status.ACTIVE
-        cancel_at_period_end = True
-    elif state == "SUBSCRIPTION_STATE_ON_HOLD":
-        status = UserSubscription.Status.PAST_DUE
-    else:
-        status = UserSubscription.Status.CANCELED
-
-    auto_renew = (match.get("autoRenewingPlan") or {}) if isinstance(match, dict) else {}
-    if isinstance(auto_renew, dict) and auto_renew.get("autoRenewEnabled") is False and not expired:
-        if status == UserSubscription.Status.ACTIVE:
-            cancel_at_period_end = True
-
-    order_id = str(match.get("latestSuccessfulOrderId") or transaction_id or purchase_token)
-    identifiers = body.get("externalAccountIdentifiers") or {}
-    account_token = ""
-    if isinstance(identifiers, dict):
-        account_token = str(identifiers.get("obfuscatedExternalAccountId") or "")
-    price_cents, currency = _google_price(auto_renew if isinstance(auto_renew, dict) else {})
-    return VerifiedStorePurchase(
-        source=UserSubscription.Source.PLAY_STORE,
-        store_label="PLAY_STORE",
-        product_id=product_id,
-        transaction_id=order_id,
-        original_transaction_id=purchase_token,
-        expires_at=expires_at,
-        purchased_at=None,
-        cancel_at_period_end=cancel_at_period_end,
-        status=status,
-        price_cents=price_cents,
-        currency=currency,
-        account_token=account_token,
-    )
-
-
-@transaction.atomic
-def grant_verified_store_purchase(user, verified: VerifiedStorePurchase) -> UserSubscription:
-    plan = resolve_plan_from_revenuecat_product(verified.product_id)
-    if plan is None:
-        raise StorePurchaseRejected("This store product is not mapped to a plan.")
-
-    expected = store_account_token(user.pk)
-    if verified.account_token and verified.account_token.lower() != expected.lower():
-        raise StorePurchaseRejected("Purchase account token does not match this user.")
-
-    original = verified.original_transaction_id
-    if original:
-        taken = (
-            UserSubscription.objects.select_for_update()
-            .filter(revenuecat_original_transaction_id=original)
-            .exclude(user=user)
-            .exists()
-        )
-        if taken:
-            raise StorePurchaseRejected(
-                "This purchase is already linked to another account."
-            )
-
-    sub = assign_plan_from_revenuecat(
-        user,
-        plan_slug=plan.slug,
-        product_id=verified.product_id,
-        revenuecat_original_transaction_id=original,
-        status=verified.status,
-        cancel_at_period_end=verified.cancel_at_period_end,
-        current_period_end=verified.expires_at,
-        keep_existing_plan_if_unknown=False,
-        source=verified.source,
-    )
-
-    if verified.status != UserSubscription.Status.ACTIVE:
-        return sub
-
-    amount = verified.price_cents or plan.price_cents
-    currency = (verified.currency or plan.currency or "usd").lower()
-    event_id = f"{verified.source}:{verified.transaction_id}"
-    invoice, _created = Invoice.objects.update_or_create(
-        revenuecat_event_id=event_id,
-        defaults={
-            "user": user,
-            "company": getattr(user, "company", None),
-            "provider": verified.source,
-            "status": Invoice.Status.PAID,
-            "currency": currency,
-            "amount_due": amount,
-            "amount_paid": amount,
-            "period_start": verified.purchased_at,
-            "period_end": verified.expires_at,
-            "revenuecat_store": verified.store_label,
-            "description": f"{plan.name} — {verified.store_label}",
-            "hosted_invoice_url": "",
-        },
-    )
-    Payment.objects.update_or_create(
-        revenuecat_transaction_id=verified.transaction_id,
-        defaults={
-            "user": user,
-            "company": getattr(user, "company", None),
-            "invoice": invoice,
-            "provider": verified.source,
-            "status": Payment.Status.SUCCEEDED,
-            "currency": currency,
-            "amount": amount,
-            "paid_at": verified.purchased_at or timezone.now(),
-            "failure_message": "",
-        },
-    )
-    return sub
-
-
-def _load_apple_roots() -> list[x509.Certificate]:
-    pems: list[str] = []
-    extra = (getattr(settings, "APPLE_IAP_ROOT_PEM", "") or "").strip()
-    if extra:
-        pems.append(extra)
-    if _BUNDLED_APPLE_ROOT.is_file():
-        pems.append(_BUNDLED_APPLE_ROOT.read_text(encoding="utf-8"))
-    roots: list[x509.Certificate] = []
-    for pem in pems:
-        try:
-            roots.append(x509.load_pem_x509_certificate(pem.encode("utf-8")))
-        except ValueError:
-            logger.error("Ignoring an unreadable Apple root certificate")
-    return roots
-
-
-def _load_der_cert(value: Any) -> x509.Certificate:
-    if not isinstance(value, str) or not value.strip():
-        raise StorePurchaseRejected("App Store certificate is missing.")
-    try:
-        der = base64.b64decode(value)
-        return x509.load_der_x509_certificate(der)
-    except (ValueError, TypeError) as exc:
-        raise StorePurchaseRejected("App Store certificate is invalid.") from exc
-
-
-def _trusted_leaf(
-    certs: list[x509.Certificate],
-    roots: list[x509.Certificate],
-) -> x509.Certificate:
-    if not certs:
-        raise StorePurchaseRejected("App Store certificate chain is empty.")
-    now = datetime.now(dt_timezone.utc)
-    for cert in certs:
-        if cert.not_valid_before_utc > now or cert.not_valid_after_utc < now:
-            raise StorePurchaseRejected("App Store certificate is not currently valid.")
-    for index in range(len(certs) - 1):
-        _verify_signed_by(certs[index], certs[index + 1])
-        if certs[index].issuer != certs[index + 1].subject:
-            raise StorePurchaseRejected("App Store certificate issuer mismatch.")
-    last = certs[-1]
-    root_fps = {root.fingerprint(hashes.SHA256()) for root in roots}
-    if last.fingerprint(hashes.SHA256()) in root_fps:
-        return certs[0]
-    for root in roots:
-        try:
-            _verify_signed_by(last, root)
-        except Exception:
-            continue
-        if last.issuer == root.subject:
-            return certs[0]
-    raise StorePurchaseRejected("App Store certificate chain is not trusted.")
-
-
-def _verify_signed_by(child: x509.Certificate, issuer: x509.Certificate) -> None:
-    public_key = issuer.public_key()
-    signature_hash = child.signature_hash_algorithm
-    if signature_hash is None:
-        raise StorePurchaseRejected("App Store certificate has no signature hash.")
-    if isinstance(public_key, ec.EllipticCurvePublicKey):
-        public_key.verify(
-            child.signature,
-            child.tbs_certificate_bytes,
-            ec.ECDSA(signature_hash),
-        )
-        return
-    public_key.verify(
-        child.signature,
-        child.tbs_certificate_bytes,
-        padding.PKCS1v15(),
-        signature_hash,
-    )
-
-
-def _require_app_store_oid(leaf: x509.Certificate) -> None:
-    try:
-        leaf.extensions.get_extension_for_oid(_APP_STORE_CERT_OID)
-    except x509.ExtensionNotFound as exc:
-        raise StorePurchaseRejected(
-            "Signed transaction certificate is not an App Store certificate."
-        ) from exc
-
-
-def _google_access_token(info: dict[str, Any]) -> str:
-    """OAuth JWT bearer grant for a Play Console service account."""
-    client_email = info.get("client_email")
-    private_key = info.get("private_key")
-    token_uri = info.get("token_uri") or "https://oauth2.googleapis.com/token"
-    if not client_email or not private_key:
-        raise StoreNotConfiguredError(
-            "GOOGLE_PLAY_SERVICE_ACCOUNT_JSON is missing client_email or private_key."
-        )
-    now = int(time.time())
-    assertion = jwt.encode(
-        {
-            "iss": client_email,
-            "scope": _PLAY_SCOPE,
-            "aud": token_uri,
-            "iat": now,
-            "exp": now + 3600,
-        },
-        private_key,
-        algorithm="RS256",
-    )
-    try:
-        response = requests.post(
-            token_uri,
-            data={
-                "grant_type": "urn:ietf:params:oauth:grant-type:jwt-bearer",
-                "assertion": assertion,
-            },
-            timeout=15,
-        )
-    except requests.RequestException as exc:
-        raise StoreVerificationError("Play Store verification failed.") from exc
-    if response.status_code >= 400:
-        raise StoreVerificationError("Play Store authentication failed.")
-    try:
-        token = response.json().get("access_token")
-    except ValueError as exc:
-        raise StoreVerificationError("Play Store authentication failed.") from exc
-    if not token:
-        raise StoreVerificationError("Play Store authentication failed.")
-    return str(token)
-
-
-def _load_service_account_info(raw: str) -> dict[str, Any]:
-    text = raw
-    if not raw.lstrip().startswith("{"):
-        path = Path(raw)
-        if path.is_file():
-            text = path.read_text(encoding="utf-8")
-    try:
-        info = json.loads(text)
-    except json.JSONDecodeError as exc:
-        raise StoreNotConfiguredError(
-            "GOOGLE_PLAY_SERVICE_ACCOUNT_JSON is not valid JSON."
-        ) from exc
-    if not isinstance(info, dict):
-        raise StoreNotConfiguredError(
-            "GOOGLE_PLAY_SERVICE_ACCOUNT_JSON must be a JSON object."
-        )
-    return info
-
-
-def _ms_to_dt(value: Any) -> datetime | None:
-    if value is None or value == "":
-        return None
-    try:
-        ms = int(value)
-    except (TypeError, ValueError):
-        return None
-    if ms <= 0:
-        return None
-    return datetime.fromtimestamp(ms / 1000.0, tz=dt_timezone.utc)
-
-
-def _parse_rfc3339(value: Any) -> datetime | None:
-    if not value or not isinstance(value, str):
-        return None
-    try:
-        parsed = datetime.fromisoformat(value.replace("Z", "+00:00"))
-    except ValueError:
-        return None
-    if parsed.tzinfo is None:
-        return parsed.replace(tzinfo=dt_timezone.utc)
-    return parsed
-
-
-def _google_price(auto_renew: dict[str, Any]) -> tuple[int, str]:
-    price = auto_renew.get("recurringPrice") if isinstance(auto_renew, dict) else None
-    if not isinstance(price, dict):
-        return 0, "usd"
-    currency = str(price.get("currencyCode") or "usd").lower()
-    try:
-        units = int(price.get("units") or 0)
-    except (TypeError, ValueError):
-        units = 0
-    try:
-        nanos = int(price.get("nanos") or 0)
-    except (TypeError, ValueError):
-        nanos = 0
-    cents = units * 100 + nanos // 10_000_000
-    return max(0, cents), currency

llm_be/monetization/tests/test_revenuecat.py

@@ -2,7 +2,10 @@
 
 from __future__ import annotations
 
-from django.test import TestCase
+from django.test import TestCase, override_settings
+from django.urls import reverse
+from rest_framework import status
+from rest_framework.test import APIClient
 
 from chat_backend.tests.factories import make_user
 from monetization.models import Invoice, Payment, SubscriptionPlan, UserSubscription
@@ -126,3 +129,50 @@ class RevenueCatDispatchTests(TestCase):
         self.assertEqual(sub.status, UserSubscription.Status.CANCELED)
 
 
+@override_settings(REVENUECAT_WEBHOOK_SECRET="test-rc-secret")
+class RevenueCatWebhookViewTests(TestCase):
+    def setUp(self):
+        seed_subscription_plans(update_existing=False)
+        self.client = APIClient()
+        self.url = reverse("finance_revenuecat_webhook")
+        self.user = make_user(email="rcview@example.com")
+        founders = SubscriptionPlan.objects.get(slug="founders")
+        founders.revenuecat_product_id = "hesychia_founders_monthly"
+        founders.save(update_fields=["revenuecat_product_id", "last_modified"])
+
+    def test_missing_secret_config(self):
+        with override_settings(REVENUECAT_WEBHOOK_SECRET=""):
+            response = self.client.post(
+                self.url, {"event": _rc_event()}, format="json"
+            )
+        self.assertEqual(response.status_code, status.HTTP_503_SERVICE_UNAVAILABLE)
+
+    def test_unauthorized(self):
+        response = self.client.post(
+            self.url,
+            {"event": _rc_event(app_user_id=str(self.user.pk))},
+            format="json",
+            HTTP_AUTHORIZATION="Bearer wrong",
+        )
+        self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
+
+    def test_success(self):
+        response = self.client.post(
+            self.url,
+            {"api_version": "1.0", "event": _rc_event(app_user_id=str(self.user.pk))},
+            format="json",
+            HTTP_AUTHORIZATION="Bearer test-rc-secret",
+        )
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertTrue(
+            UserSubscription.objects.filter(
+                user=self.user,
+                source=UserSubscription.Source.REVENUECAT,
+                status=UserSubscription.Status.ACTIVE,
+            ).exists()
+        )
+        self.assertTrue(
+            Invoice.objects.filter(
+                user=self.user, provider=Invoice.Provider.REVENUECAT
+            ).exists()
+        )

llm_be/monetization/tests/test_store_purchases.py

@@ -1,336 +0,0 @@
-"""StoreKit and Play Billing confirmation. No store webhooks."""
-
-from __future__ import annotations
-
-import base64
-from datetime import datetime, timedelta, timezone as dt_timezone
-from unittest.mock import patch
-
-import jwt
-from cryptography import x509
-from cryptography.hazmat.primitives import hashes, serialization
-from cryptography.hazmat.primitives.asymmetric import ec
-from cryptography.x509.oid import NameOID
-from django.test import TestCase, override_settings
-from django.urls import reverse
-from django.utils import timezone
-from rest_framework import status
-from rest_framework.test import APITestCase
-
-from chat_backend.tests.factories import make_user
-from monetization.models import Invoice, Payment, SubscriptionPlan, UserSubscription
-from monetization.services.plans import seed_subscription_plans
-from monetization.services.store_purchases import (
-    StoreNotConfiguredError,
-    StorePurchaseRejected,
-    confirm_store_purchase,
-    store_account_token,
-)
-
-_APP_STORE_OID = x509.ObjectIdentifier("1.2.840.113635.100.6.11.1")
-_PRODUCT = "hesychia_founders_monthly"
-
-
-def _cert(*, subject_cn, subject_key, issuer_cert, issuer_key, is_ca, app_store=False):
-    now = datetime.now(dt_timezone.utc)
-    name = x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, subject_cn)])
-    issuer_name = issuer_cert.subject if issuer_cert is not None else name
-    builder = (
-        x509.CertificateBuilder()
-        .subject_name(name)
-        .issuer_name(issuer_name)
-        .public_key(subject_key.public_key())
-        .serial_number(x509.random_serial_number())
-        .not_valid_before(now - timedelta(days=1))
-        .not_valid_after(now + timedelta(days=30))
-    )
-    if is_ca:
-        builder = builder.add_extension(
-            x509.BasicConstraints(ca=True, path_length=None),
-            critical=True,
-        )
-    if app_store:
-        builder = builder.add_extension(
-            x509.UnrecognizedExtension(_APP_STORE_OID, b"\x05\x00"),
-            critical=False,
-        )
-    signer = issuer_key if issuer_key is not None else subject_key
-    return builder.sign(signer, hashes.SHA256())
-
-
-def _chain():
-    root_key = ec.generate_private_key(ec.SECP256R1())
-    leaf_key = ec.generate_private_key(ec.SECP256R1())
-    root = _cert(
-        subject_cn="Test Apple Root",
-        subject_key=root_key,
-        issuer_cert=None,
-        issuer_key=None,
-        is_ca=True,
-    )
-    leaf = _cert(
-        subject_cn="Test StoreKit",
-        subject_key=leaf_key,
-        issuer_cert=root,
-        issuer_key=root_key,
-        is_ca=False,
-        app_store=True,
-    )
-    root_pem = root.public_bytes(serialization.Encoding.PEM).decode("ascii")
-    return leaf_key, leaf, root, root_pem
-
-
-def _b64_der(cert) -> str:
-    der = cert.public_bytes(serialization.Encoding.DER)
-    return base64.b64encode(der).decode("ascii")
-
-
-def _signed_transaction(leaf_key, leaf, root, claims):
-    return jwt.encode(
-        claims,
-        leaf_key,
-        algorithm="ES256",
-        headers={"x5c": [_b64_der(leaf), _b64_der(root)]},
-    )
-
-
-def _future_ms(days=30) -> int:
-    moment = datetime.now(dt_timezone.utc) + timedelta(days=days)
-    return int(moment.timestamp() * 1000)
-
-
-class AppleConfirmTests(TestCase):
-    def setUp(self):
-        seed_subscription_plans(update_existing=False)
-        self.user = make_user(email="apple@example.com")
-        founders = SubscriptionPlan.objects.get(slug="founders")
-        founders.revenuecat_product_id = _PRODUCT
-        founders.save(update_fields=["revenuecat_product_id", "last_modified"])
-        self.leaf_key, self.leaf, self.root, self.root_pem = _chain()
-
-    def _claims(self, **overrides):
-        base = {
-            "bundleId": "ai.hesychia.chat",
-            "productId": _PRODUCT,
-            "transactionId": "2000000000001",
-            "originalTransactionId": "2000000000001",
-            "appAccountToken": store_account_token(self.user.pk),
-            "purchaseDate": _future_ms(days=-1),
-            "expiresDate": _future_ms(days=30),
-            "price": 10000,
-            "currency": "USD",
-        }
-        base.update(overrides)
-        return base
-
-    def _confirm(self, claims):
-        token = _signed_transaction(self.leaf_key, self.leaf, self.root, claims)
-        with override_settings(
-            APPLE_IAP_BUNDLE_ID="ai.hesychia.chat",
-            APPLE_IAP_ROOT_PEM=self.root_pem,
-        ):
-            return confirm_store_purchase(
-                self.user,
-                {
-                    "store": "app_store",
-                    "product_id": _PRODUCT,
-                    "transaction_id": claims["transactionId"],
-                    "signed_transaction": token,
-                },
-            )
-
-    def test_signed_transaction_grants_plan(self):
-        sub = self._confirm(self._claims())
-        self.assertEqual(sub.source, UserSubscription.Source.APP_STORE)
-        self.assertEqual(sub.status, UserSubscription.Status.ACTIVE)
-        self.assertEqual(sub.plan.slug, "founders")
-        self.assertEqual(sub.revenuecat_original_transaction_id, "2000000000001")
-        invoice = Invoice.objects.get(user=self.user)
-        self.assertEqual(invoice.provider, Invoice.Provider.APP_STORE)
-        self.assertEqual(invoice.amount_paid, 1000)
-        self.assertEqual(invoice.revenuecat_store, "APP_STORE")
-        payment = Payment.objects.get(user=self.user)
-        self.assertEqual(payment.provider, Payment.Provider.APP_STORE)
-        self.assertEqual(payment.status, Payment.Status.SUCCEEDED)
-
-    def test_repeat_confirm_is_idempotent(self):
-        claims = self._claims()
-        self._confirm(claims)
-        self._confirm(claims)
-        self.assertEqual(Invoice.objects.filter(user=self.user).count(), 1)
-        self.assertEqual(Payment.objects.filter(user=self.user).count(), 1)
-
-    def test_wrong_account_token_rejected(self):
-        with self.assertRaises(StorePurchaseRejected):
-            self._confirm(self._claims(appAccountToken="00000000-0000-0000-0000-000000000000"))
-
-    def test_untrusted_chain_rejected(self):
-        token = _signed_transaction(
-            self.leaf_key, self.leaf, self.root, self._claims()
-        )
-        with override_settings(APPLE_IAP_BUNDLE_ID="ai.hesychia.chat", APPLE_IAP_ROOT_PEM=""):
-            with self.assertRaises(StorePurchaseRejected):
-                confirm_store_purchase(
-                    self.user,
-                    {
-                        "store": "app_store",
-                        "product_id": _PRODUCT,
-                        "signed_transaction": token,
-                    },
-                )
-
-    def test_revoked_transaction_cancels(self):
-        sub = self._confirm(self._claims(revocationDate=_future_ms(days=-1)))
-        self.assertEqual(sub.status, UserSubscription.Status.CANCELED)
-        self.assertFalse(Payment.objects.filter(user=self.user).exists())
-
-
-class PlayConfirmTests(TestCase):
-    def setUp(self):
-        seed_subscription_plans(update_existing=False)
-        self.user = make_user(email="play@example.com")
-        founders = SubscriptionPlan.objects.get(slug="founders")
-        founders.revenuecat_product_id = _PRODUCT
-        founders.save(update_fields=["revenuecat_product_id", "last_modified"])
-
-    def _body(self, **overrides):
-        expiry = (datetime.now(dt_timezone.utc) + timedelta(days=30)).strftime(
-            "%Y-%m-%dT%H:%M:%SZ"
-        )
-        body = {
-            "subscriptionState": "SUBSCRIPTION_STATE_ACTIVE",
-            "lineItems": [
-                {
-                    "productId": _PRODUCT,
-                    "expiryTime": expiry,
-                    "latestSuccessfulOrderId": "GPA.1234-5678",
-                    "autoRenewingPlan": {
-                        "autoRenewEnabled": True,
-                        "recurringPrice": {
-                            "currencyCode": "USD",
-                            "units": "10",
-                            "nanos": 0,
-                        },
-                    },
-                }
-            ],
-            "externalAccountIdentifiers": {
-                "obfuscatedExternalAccountId": store_account_token(self.user.pk),
-            },
-        }
-        body.update(overrides)
-        return body
-
-    @patch("monetization.services.store_purchases.fetch_google_subscription")
-    def test_play_token_grants_plan(self, mock_fetch):
-        mock_fetch.return_value = self._body()
-        sub = confirm_store_purchase(
-            self.user,
-            {
-                "store": "play_store",
-                "product_id": _PRODUCT,
-                "purchase_token": "token-abc",
-                "transaction_id": "GPA.1234-5678",
-            },
-        )
-        self.assertEqual(sub.source, UserSubscription.Source.PLAY_STORE)
-        self.assertEqual(sub.status, UserSubscription.Status.ACTIVE)
-        self.assertEqual(sub.revenuecat_original_transaction_id, "token-abc")
-        self.assertFalse(sub.cancel_at_period_end)
-        invoice = Invoice.objects.get(user=self.user)
-        self.assertEqual(invoice.provider, Invoice.Provider.PLAY_STORE)
-        self.assertEqual(invoice.amount_paid, 1000)
-
-    @patch("monetization.services.store_purchases.fetch_google_subscription")
-    def test_canceled_but_unexpired_keeps_access(self, mock_fetch):
-        mock_fetch.return_value = self._body(
-            subscriptionState="SUBSCRIPTION_STATE_CANCELED"
-        )
-        sub = confirm_store_purchase(
-            self.user,
-            {
-                "store": "play_store",
-                "product_id": _PRODUCT,
-                "purchase_token": "token-cancel",
-            },
-        )
-        self.assertEqual(sub.status, UserSubscription.Status.ACTIVE)
-        self.assertTrue(sub.cancel_at_period_end)
-
-    @patch("monetization.services.store_purchases.fetch_google_subscription")
-    def test_token_already_linked_to_someone_else(self, mock_fetch):
-        other = make_user(email="other@example.com")
-        UserSubscription.objects.create(
-            user=other,
-            plan=SubscriptionPlan.objects.get(slug="founders"),
-            status=UserSubscription.Status.ACTIVE,
-            source=UserSubscription.Source.PLAY_STORE,
-            revenuecat_original_transaction_id="token-taken",
-        )
-        mock_fetch.return_value = self._body()
-        with self.assertRaises(StorePurchaseRejected):
-            confirm_store_purchase(
-                self.user,
-                {
-                    "store": "play_store",
-                    "product_id": _PRODUCT,
-                    "purchase_token": "token-taken",
-                },
-            )
-
-    def test_missing_play_credentials(self):
-        with override_settings(GOOGLE_PLAY_SERVICE_ACCOUNT_JSON=""):
-            with self.assertRaises(StoreNotConfiguredError):
-                confirm_store_purchase(
-                    self.user,
-                    {
-                        "store": "play_store",
-                        "product_id": _PRODUCT,
-                        "purchase_token": "token-abc",
-                    },
-                )
-
-
-class StoreConfirmApiTests(APITestCase):
-    def setUp(self):
-        seed_subscription_plans(update_existing=False)
-        self.user = make_user(email="api@example.com")
-        self.client.force_authenticate(user=self.user)
-        self.url = reverse("finance_store_confirm")
-
-    def test_requires_auth(self):
-        self.client.force_authenticate(user=None)
-        response = self.client.post(self.url, {}, format="json")
-        self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
-
-    @patch("monetization.views.confirm_store_purchase")
-    def test_rejected_purchase_is_400(self, mock_confirm):
-        mock_confirm.side_effect = StorePurchaseRejected("nope")
-        response = self.client.post(
-            self.url,
-            {
-                "store": "play_store",
-                "product_id": _PRODUCT,
-                "purchase_token": "token",
-            },
-            format="json",
-        )
-        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
-
-    def test_lapsed_store_period_ends_on_read(self):
-        plan = SubscriptionPlan.objects.get(slug="founders")
-        UserSubscription.objects.create(
-            user=self.user,
-            plan=plan,
-            status=UserSubscription.Status.ACTIVE,
-            source=UserSubscription.Source.APP_STORE,
-            current_period_end=timezone.now() - timedelta(days=1),
-        )
-        response = self.client.get(reverse("finance_subscription_me"))
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data["status"], "canceled")
-        self.assertTrue(response.data["needs_checkout"])
-        self.assertEqual(
-            response.data["store_account_token"],
-            store_account_token(self.user.pk),
-        )

llm_be/monetization/urls.py

@@ -1,12 +1,12 @@
 from django.urls import path
 
 from monetization.views import (
-    ConfirmStorePurchaseView,
     CreateBillingPortalSessionView,
     CreateCheckoutSessionView,
     InvoiceListView,
     PaymentListView,
     PlanListView,
+    RevenueCatWebhookView,
     StripeWebhookView,
     SubscriptionMeView,
 )
@@ -42,14 +42,14 @@ urlpatterns = [
         SubscriptionMeView.as_view(),
         name="finance_subscription_me",
     ),
-    path(
-        "store/confirm/",
-        ConfirmStorePurchaseView.as_view(),
-        name="finance_store_confirm",
-    ),
     path(
         "webhooks/stripe/",
         StripeWebhookView.as_view(),
         name="finance_stripe_webhook",
     ),
+    path(
+        "webhooks/revenuecat/",
+        RevenueCatWebhookView.as_view(),
+        name="finance_revenuecat_webhook",
+    ),
 ]

llm_be/monetization/views.py

@@ -12,7 +12,6 @@ from monetization.serializers import (
     InvoiceSerializer,
     PaymentSerializer,
     PortalSessionSerializer,
-    StorePurchaseConfirmSerializer,
     SubscriptionPlanSerializer,
 )
 from monetization.services.plans import (
@@ -21,13 +20,10 @@ from monetization.services.plans import (
     seed_subscription_plans,
 )
 from monetization.services.quotas import get_usage_snapshot
-from monetization.services.store_purchases import (
-    StoreNotConfiguredError,
-    StorePurchaseRejected,
-    StoreVerificationError,
-    confirm_store_purchase,
-    expire_lapsed_store_subscription,
-    store_account_token,
+from monetization.services.revenuecat import (
+    RevenueCatWebhookAuthError,
+    dispatch_revenuecat_event,
+    verify_revenuecat_authorization,
 )
 from monetization.services.stripe import (
     StripeNotConfiguredError,
@@ -198,7 +194,6 @@ class SubscriptionMeView(APIView):
             sub = request.user.subscription
         except UserSubscription.DoesNotExist:
             sub = None
-        sub = expire_lapsed_store_subscription(sub)
 
         usage = get_usage_snapshot(request.user)
         payload = {
@@ -218,52 +213,11 @@ class SubscriptionMeView(APIView):
                 if sub and sub.current_period_end
                 else None
             ),
-            "store_account_token": store_account_token(request.user.pk),
             "usage": usage.to_dict(),
         }
         return Response(payload)
 
 
-class ConfirmStorePurchaseView(APIView):
-    """Verify a StoreKit or Play Billing purchase and grant the plan.
-
-    The app calls this after the native store sheet succeeds. There is no
-    store webhook.
-    """
-
-    def post(self, request):
-        serializer = StorePurchaseConfirmSerializer(data=request.data)
-        serializer.is_valid(raise_exception=True)
-        try:
-            sub = confirm_store_purchase(request.user, serializer.validated_data)
-        except StorePurchaseRejected as exc:
-            return Response({"detail": str(exc)}, status=status.HTTP_400_BAD_REQUEST)
-        except StoreNotConfiguredError as exc:
-            return Response(
-                {"detail": str(exc)},
-                status=status.HTTP_503_SERVICE_UNAVAILABLE,
-            )
-        except StoreVerificationError as exc:
-            logger.exception("Store purchase verification failed")
-            return Response({"detail": str(exc)}, status=status.HTTP_502_BAD_GATEWAY)
-
-        return Response(
-            {
-                "source": sub.source,
-                "status": sub.status,
-                "plan_slug": sub.plan.slug if sub.plan_id else None,
-                "cancel_at_period_end": bool(sub.cancel_at_period_end),
-                "current_period_end": (
-                    sub.current_period_end.isoformat()
-                    if sub.current_period_end
-                    else None
-                ),
-                "store_account_token": store_account_token(request.user.pk),
-            },
-            status=status.HTTP_200_OK,
-        )
-
-
 class StripeWebhookView(APIView):
     """Verify Stripe signatures and upsert local invoice/payment rows."""
 
@@ -312,3 +266,50 @@ class StripeWebhookView(APIView):
             )
 
         return Response({"received": True}, status=status.HTTP_200_OK)
+
+
+class RevenueCatWebhookView(APIView):
+    """Verify RevenueCat Authorization and upsert subscription + ledger rows."""
+
+    permission_classes = (permissions.AllowAny,)
+    authentication_classes = ()
+
+    def post(self, request):
+        webhook_secret = settings.REVENUECAT_WEBHOOK_SECRET
+        if not webhook_secret:
+            logger.error("REVENUECAT_WEBHOOK_SECRET is not configured")
+            return Response(
+                {"detail": "Webhook secret not configured"},
+                status=status.HTTP_503_SERVICE_UNAVAILABLE,
+            )
+
+        try:
+            verify_revenuecat_authorization(
+                authorization_header=request.META.get("HTTP_AUTHORIZATION"),
+                expected_secret=webhook_secret,
+            )
+        except RevenueCatWebhookAuthError as exc:
+            return Response(
+                {"detail": str(exc)},
+                status=status.HTTP_401_UNAUTHORIZED,
+            )
+
+        payload = request.data
+        if not isinstance(payload, dict):
+            return Response(
+                {"detail": "Invalid payload"},
+                status=status.HTTP_400_BAD_REQUEST,
+            )
+
+        try:
+            dispatch_revenuecat_event(payload)
+        except Exception:
+            event = payload.get("event") if isinstance(payload, dict) else {}
+            event_id = event.get("id") if isinstance(event, dict) else None
+            logger.exception("Error handling RevenueCat event %s", event_id)
+            return Response(
+                {"detail": "Webhook handler error"},
+                status=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            )
+
+        return Response({"received": True}, status=status.HTTP_200_OK)

uv.lock

@@ -497,11 +497,11 @@ wheels = [
 
 [[package]]
 name = "certifi"
-version = "2026.10.23"
+version = "2026.7.22"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/fd/11/b524cbd9bbdaca58608e4cf4053fd463417549e1959fa8d3aa18319f9555/certifi-2026.10.23.tar.gz", hash = "sha256:a9895e6e2758b371e0545e321a3a8fd1fcfd9829ada8824a936dfb16aaaf36cd", size = 136225, upload-time = "2026-10-23T11:36:16.478Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/a3/c2/24167ea9858356b47a87a50d39908bfdb72ceeefe0041586e704e5376b3a/certifi-2026.7.22.tar.gz", hash = "sha256:741e2c3b351ddf169a738da9f2c048608ff7f2c5cc02f1ebc6b118bb090d5d55", size = 138112, upload-time = "2026-07-22T03:35:12.644Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/32/d1/a3652fe2c19134d0d15922177821d863cbd7e842d53a21bbe7e8e3a1b5ac/certifi-2026.10.23-py3-none-any.whl", hash = "sha256:e9b54de76e530bb6cf0ccd036787103acb58fd42ba930ea8bf948ddbaa2f61d1", size = 135082, upload-time = "2026-10-23T11:36:14.763Z" },
+    { url = "https://files.pythonhosted.org/packages/0b/a7/71ac2cff56fec219ed242bb11b8efb69fcc4bec75db06fb7bfe35de520e6/certifi-2026.7.22-py3-none-any.whl", hash = "sha256:62f22742b58a1a33014a2b6b706588a8d7e2a88ae7bd1a6ebe8c992928483775", size = 136983, upload-time = "2026-07-22T03:35:11.276Z" },
 ]
 
 [[package]]