Add finance app with Stripe Checkout subscriptions (#21)

Introduce Invoice/Payment ledger models, $10/mo settings-backed pricing, hosted Checkout + signed webhooks, Django admin, and authenticated list APIs.
2026-07-26 19:16:34 -05:00
parent 9984d1c340
commit f92bd268b3
23 changed files with 1540 additions and 0 deletions
@@ -0,0 +1,86 @@
+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"