# Base stack — works standalone for local smoke testing (`docker compose up`).
# The service binds 127.0.0.1:8080; a host reverse proxy (nginx/Caddy/Traefik)
# terminates TLS for bookmark-api.<domain> and forwards to it.
#
# If your proxy runs in Docker on its own network, use the prod override which
# attaches to that network instead of publishing a port:
#   docker compose -f docker-compose.yml -f docker-compose.prod.yml up -d

services:
  bookmark-api:
    build: ./backend
    image: bookmarkmanager-backend:latest
    container_name: bookmark-api
    restart: unless-stopped
    environment:
      # TOKEN_KEY derives every Reader's userscript credential (issue #24) —
      # compose refuses to start without it.
      TOKEN_KEY: ${TOKEN_KEY:?set TOKEN_KEY in .env}
      # Retired global credential, optional: only used until the grace
      # deadline, for already-installed scripts. Remove after the window.
      API_TOKEN: ${API_TOKEN:-}
      API_TOKEN_GRACE_UNTIL: ${API_TOKEN_GRACE_UNTIL:-}
      # Owner's Discord user ID — required, seeds the one Reader row.
      OWNER_DISCORD_ID: ${OWNER_DISCORD_ID:?set OWNER_DISCORD_ID in .env}
      ALLOWED_ORIGINS: ${ALLOWED_ORIGINS:-https://asuracomic.net,https://asurascans.com,https://demonicscans.org,https://comix.to,https://kagane.to,https://novelfull.com,https://lightnovelworld.net}
      # The bookmarks database. Host is the compose service name; the password
      # comes from .env so it is never committed.
      DATABASE_URL: ${DATABASE_URL:-postgres://bookmarks:${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in .env}@postgres:5432/bookmarks?sslmode=disable}
      PORT: "8080"
      # Discord OAuth for the browser UI (issue #23). The first four are
      # required; DISCORD_REQUIRED_ROLE is optional and empty by default.
      DISCORD_CLIENT_ID: ${DISCORD_CLIENT_ID:?set DISCORD_CLIENT_ID in .env}
      DISCORD_CLIENT_SECRET: ${DISCORD_CLIENT_SECRET:?set DISCORD_CLIENT_SECRET in .env}
      DISCORD_GUILD_ID: ${DISCORD_GUILD_ID:?set DISCORD_GUILD_ID in .env}
      DISCORD_REQUIRED_ROLE: ${DISCORD_REQUIRED_ROLE:-}
      DISCORD_API_BASE: ${DISCORD_API_BASE:-https://discord.com/api/v10}
      DISCORD_REDIRECT_URI: ${DISCORD_REDIRECT_URI:?set DISCORD_REDIRECT_URI in .env}
      # Path inside the container; matches the bindmount above.
      USERSCRIPT_PATH: ${USERSCRIPT_PATH:-/userscript/manga-bookmark.user.js}
      # Second script from the same bindmount; the novel library is a separate
      # Violentmonkey install.
      NOVEL_USERSCRIPT_PATH: ${NOVEL_USERSCRIPT_PATH:-/userscript/novel-bookmark.user.js}
      # Latest-chapter poller. LATEST_CHAPTER_POLL_ENABLED=0 in .env is the kill
      # switch; it only takes effect because these are listed here.
      LATEST_CHAPTER_POLL_ENABLED: ${LATEST_CHAPTER_POLL_ENABLED:-1}
      LATEST_CHAPTER_POLL_COOLDOWN: ${LATEST_CHAPTER_POLL_COOLDOWN:-1h}
      LATEST_CHAPTER_POLL_INTERVAL: ${LATEST_CHAPTER_POLL_INTERVAL:-10m}
      LATEST_CHAPTER_POLL_BATCH: ${LATEST_CHAPTER_POLL_BATCH:-14}
      LATEST_CHAPTER_POLL_STAGGER: ${LATEST_CHAPTER_POLL_STAGGER:-20s}
      # CDP endpoint for sites behind a JavaScript challenge (kagane). Unset
      # disables browser polling for those sites; the userscript still covers them.
      # Must be an IP, not the "headless-shell" DNS name: Chrome's DevTools HTTP
      # handler rejects the discovery request (GET /json/version) with a 500
      # unless the Host header is an IP address or "localhost" — confirmed
      # 2026-08-03 against chromedp/headless-shell:stable, independent of
      # chromedp's own dial logic. The sidecar's static address below exists so
      # this URL survives container recreation.
      BROWSER_WS_URL: ${BROWSER_WS_URL:-ws://172.28.0.10:9222}
    depends_on:
      headless-shell:
        condition: service_started
      # The migration runner is the first thing the binary does, so a Postgres
      # that is still initialising means a crash-loop until it is not.
      postgres:
        condition: service_healthy
    volumes:
      # The userscript is served from here, read fresh on every request. Editing
      # the file in this checkout takes effect on the next Violentmonkey poll —
      # no rebuild, no restart. `git pull` restores the committed version, which
      # is why a redeploy always ships the repo's script.
      - ./userscript:/userscript:ro
    # Bound to loopback only: the proxy (or curl during smoke test) reaches it,
    # the public internet does not.
    ports:
      - "127.0.0.1:8080:8080"
    networks:
      - browser
      - db

  postgres:
    image: postgres:17-alpine
    restart: unless-stopped
    environment:
      POSTGRES_DB: bookmarks
      POSTGRES_USER: bookmarks
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in .env}
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U bookmarks -d bookmarks"]
      interval: 5s
      timeout: 3s
      retries: 10
    volumes:
      - postgres-data:/var/lib/postgresql/data
    # Deliberately no `ports:` — only bookmark-api, over the `db` network,
    # reaches it. Use `docker compose exec postgres psql` for a shell.
    networks:
      - db

  headless-shell:
    image: chromedp/headless-shell:stable
    restart: unless-stopped
    # Chrome allocates shared memory per tab and dies on Docker's 64MB default.
    shm_size: '1gb'
    # Reaps zombie renderer processes, which otherwise accumulate for the
    # container's lifetime.
    init: true
    # Deliberately no `ports:` — an exposed CDP endpoint is remote code
    # execution. Only bookmark-api, via the `browser` network below, may reach it.
    # Don't pass --remote-debugging-address/--remote-debugging-port here: the
    # image's own entrypoint (/headless-shell/run.sh) already starts Chrome on
    # 127.0.0.1:9223 and fronts it with a socat proxy listening on 0.0.0.0:9222.
    # Redeclaring the port flag here overrides Chrome's, so it binds 9222
    # directly (IPv6 loopback only) instead of 9223 — collides with socat's own
    # bind on 9222 and leaves nothing listening on 9223, so every external
    # connection to headless-shell:9222 fails with EOF. Only pass flags the
    # entrypoint doesn't already set.
    command:
      - --disable-gpu
      - --no-sandbox
    networks:
      browser:
        # Pinned so BROWSER_WS_URL can name an IP (required, see above) that
        # survives `docker compose up` recreating this container.
        ipv4_address: 172.28.0.10

volumes:
  postgres-data:
  # The pre-Postgres SQLite volume (bookmarks-data) is deliberately no longer
  # declared here: undeclared means `docker compose down -v` cannot take it
  # with the rest, so the old database survives the cutover until someone
  # removes it by hand.

networks:
  # Not `internal: true`: headless Chrome still needs outbound access to reach
  # kagane.to. Isolation here comes from membership (only bookmark-api and
  # headless-shell join it), not from cutting egress.
  browser:
    ipam:
      config:
        - subnet: 172.28.0.0/24
  # Postgres needs no egress and nothing outside bookmark-api needs to reach
  # it, so this one really can be cut off from the outside world.
  db:
    internal: true