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chat_backend/llm_be/finance/admin.py
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Add finance app with Stripe Checkout subscriptions (#21) (#23)
## Summary
- Closes #21 — new Django `finance` app with Stripe as payment provider
- Subscription price defaults to **$10 USD / month** via `SUBSCRIPTION_PRICE_AMOUNT_CENTS = 1000` in `settings.py` (env-overridable)
- Persists **Invoice** and **Payment** rows; both registered in Django admin (with payment inline on invoices)
- Checkout Session API redirects users to Stripe hosted payment; webhook verifies signatures and upserts ledger idempotently

## API
- `POST /api/finance/checkout/` — JWT auth → `{ checkout_url, session_id }`
- `GET /api/finance/invoices/` / `GET /api/finance/payments/` — own records
- `POST /api/finance/webhooks/stripe/` — Stripe signature-verified webhook

## Config
Documented in `.env.example` / `.env.prod.example`:
`STRIPE_SECRET_KEY`, `STRIPE_PUBLISHABLE_KEY`, `STRIPE_WEBHOOK_SECRET`, optional `STRIPE_PRICE_ID`, `FRONTEND_BASE_URL`

## Test plan
- [x] `uv run python manage.py test finance` (17 tests)
- [ ] Set Stripe test keys locally; create checkout session; complete payment in Stripe test mode
- [ ] Confirm Invoice/Payment appear in `/admin/`
- [ ] Point Stripe webhook to `/api/finance/webhooks/stripe/` and verify `checkout.session.completed` / `invoice.paid`Reviewed-on: #23
2026-07-26 17:35:06 -07:00

87 lines
2.0 KiB
Python

from django.contrib import admin
from finance.models import Invoice, Payment
class PaymentInline(admin.TabularInline):
model = Payment
extra = 0
readonly_fields = (
"provider",
"status",
"amount",
"currency",
"stripe_payment_intent_id",
"stripe_charge_id",
"paid_at",
"failure_message",
"created",
"last_modified",
)
can_delete = False
show_change_link = True
@admin.register(Invoice)
class InvoiceAdmin(admin.ModelAdmin):
list_display = (
"id",
"user",
"company",
"provider",
"status",
"amount_due",
"amount_paid",
"currency",
"period_start",
"period_end",
"stripe_invoice_id",
"stripe_checkout_session_id",
"created",
)
list_filter = ("provider", "status", "currency")
search_fields = (
"user__email",
"user__username",
"company__name",
"stripe_invoice_id",
"stripe_checkout_session_id",
"stripe_subscription_id",
"stripe_customer_id",
"description",
)
readonly_fields = ("created", "last_modified")
raw_id_fields = ("user", "company")
inlines = [PaymentInline]
date_hierarchy = "created"
@admin.register(Payment)
class PaymentAdmin(admin.ModelAdmin):
list_display = (
"id",
"user",
"company",
"invoice",
"provider",
"status",
"amount",
"currency",
"stripe_payment_intent_id",
"stripe_charge_id",
"paid_at",
"created",
)
list_filter = ("provider", "status", "currency")
search_fields = (
"user__email",
"user__username",
"company__name",
"stripe_payment_intent_id",
"stripe_charge_id",
"invoice__stripe_invoice_id",
)
readonly_fields = ("created", "last_modified")
raw_id_fields = ("user", "company", "invoice")
date_hierarchy = "created"