Files
J621/AGENTS.md
T
JakeBreath 16907c39ca Support cross-origin frontends alongside same-origin setups
- django-cors-headers with env-driven CORS_ALLOWED_ORIGINS,
  CORS_ALLOW_ALL_ORIGINS, CORS_ALLOW_CREDENTIALS and CSRF_TRUSTED_ORIGINS;
  same-origin traffic is unaffected and a disallowed origin gets no CORS
  headers. Token auth needs no cookies, so credentials stay off by default.
- TRUST_PROXY_HEADERS=true lets a TLS-terminating proxy supply
  X-Forwarded-Proto/Host for correct absolute URLs.
- API media URLs (raw/thumbnail/upload/similarity/staged previews) are now
  absolute, built from the request host, so <img>/<video>/fetch() keep
  working when the SPA is served from another origin. Signed URLs are still
  per-user; nothing is stored in the DB.
- The SPA gains VITE_API_BASE (build-time, empty = same-origin) applied by
  a small apiUrl() helper used for XHR/fetch and the few URL fallbacks.

Verified with a throwaway instance: preflight and GET responses carry the
allowed origin, foreign origins get nothing, media GETs include CORS for
cross-origin fetch(), and payload URLs use the request host (dev :8000
unchanged).
2026-09-17 22:50:12 -05:00

2.2 KiB

Use the venv on backend/venv/

DO NOT mess with the system's python

For Frontend work:

read both Frontend Design related Markdown files on the frontend/ folder

For anything touching e621 endpoints or payloads (posts, pools, tags, users, favorites, IQDB, blacklists, uploads), consult the e621 OpenAPI spec first: https://e621.wiki/openapi.yaml

Download it once per session (it is ~450 KB YAML), then grep it for the exact path/parameter/schema names instead of guessing:

curl -sL https://e621.wiki/openapi.yaml -o /tmp/opencode/e621-openapi.yaml
grep -n "^  /pools.json" /tmp/opencode/e621-openapi.yaml

Notes learned from the spec (verify before trusting):

  • Index endpoints often return a bare array (e.g. GET /pools.json) while the show endpoint returns the object directly (e.g. GET /pools/{id}.json) — not always wrapped in a named key.
  • Pools index supports search[order] (id_asc, id_desc, name, created_at, post_count), search[name_matches], search[category], search[is_active].
  • Own settings (including user[blacklisted_tags]) are updated with PATCH /users/{id}.json as form-encoded data; /users/me.json returns the user object at the top level.

Project constraints (do not regress):

  • Backend is Django 6 + DRF with token auth (no session auth on the API); MariaDB/Redis come from docker-compose.yml.
  • Deployment will be Docker-based (compose); do not add systemd/cron unit files for scheduling — use the container setup for timers/workers.
  • Same-origin and cross-origin frontends both work: the SPA uses relative URLs unless built with VITE_API_BASE, the backend allows extra origins via CORS_ALLOWED_ORIGINS (plus CSRF_TRUSTED_ORIGINS for the admin), and API media URLs are absolute (built from the request host), so signed files load cross-origin too. TRUST_PROXY_HEADERS=true is required behind a TLS-terminating proxy.
  • No server-side media processing: the home server cannot handle it. Compression/optimization runs client-side (WebCodecs + WASM in a worker) and the server only applies the result via POST /api/files/J-x/optimize/.
  • Do not use imgdd; perceptual hashing is imagehash server-side.
  • Chat/messaging features are out of scope.