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chat_backend/.env.example
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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

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# Local development environment file (copy to .env).
# For production server values, use .env.prod.example instead.
DJANGO_ENV=dev
DJANGO_DEBUG=true
DJANGO_SECRET_KEY=change-me-for-local-development
DJANGO_ALLOWED_HOSTS=localhost,127.0.0.1,0.0.0.0
# Optional; when unset, http:// origins are derived for local hosts.
# DJANGO_CSRF_TRUSTED_ORIGINS=http://localhost:8003,http://127.0.0.1:8003
# Database (docker-compose sets DATABASE_URL for the web service)
DATABASE_URL=postgres://chat_backend:chat_backend@db:5432/chat_backend
# Ollama — local loopback when Ollama runs on this machine; LAN IP for GPU host.
OLLAMA_BASE_URL=http://127.0.0.1:11434
# OLLAMA_MODEL=llama3.2
# OLLAMA_EMBED_MODEL=llama3.2
# Email (SMTP2GO) — optional for local
EMAIL_HOST=mail.smtp2go.com
EMAIL_HOST_USER=
EMAIL_HOST_PASSWORD=
EMAIL_PORT=2525
EMAIL_USE_TLS=true
# Captcha (optional local)
CAPTCHA_SECRET_KEY=
# Stripe / finance (optional local — required for checkout + webhooks)
STRIPE_SECRET_KEY=
STRIPE_PUBLISHABLE_KEY=
STRIPE_WEBHOOK_SECRET=
# Optional: pre-created Stripe Price ID. When empty, Checkout uses
# SUBSCRIPTION_PRICE_* from settings.py ($10 USD / month by default).
STRIPE_PRICE_ID=
# SUBSCRIPTION_PRICE_AMOUNT_CENTS=1000
# SUBSCRIPTION_PRICE_CURRENCY=usd
# SUBSCRIPTION_PRICE_INTERVAL=month
# SUBSCRIPTION_PRODUCT_NAME=Chat Subscription
FRONTEND_BASE_URL=http://localhost:3000
# STRIPE_CHECKOUT_SUCCESS_URL=http://localhost:3000/billing/success?session_id={CHECKOUT_SESSION_ID}
# STRIPE_CHECKOUT_CANCEL_URL=http://localhost:3000/billing/cancel
# Gunicorn / ASGI
GUNICORN_WORKERS=2
GUNICORN_BIND=0.0.0.0:8000
# Host port for docker-compose.prod.yml
WEB_PORT=8003