services:
  db:
    image: docker.io/library/postgres:17-alpine
    restart: unless-stopped
    environment:
      POSTGRES_DB: ${POSTGRES_DB}
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_INITDB_ARGS: "--encoding=UTF8 --no-locale"
    volumes:
      - pgdata:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
      interval: 5s
      timeout: 3s
      retries: 20

  # one-shot: api and worker start only after the schema is at head, so neither races the other
  migrate:
    build: ./backend
    environment:
      DATABASE_URL: ${DATABASE_URL}
    command: ["alembic", "upgrade", "head"]
    depends_on:
      db:
        condition: service_healthy

  api:
    build: ./backend
    restart: unless-stopped
    env_file: .env
    command: ["fintracker", "serve", "--host", "0.0.0.0", "--port", "8000"]
    # not curl: the slim image has none. An empty ProxyHandler because a host proxy baked into
    # the image at build time (see docs/ai/ops.md) would otherwise swallow 127.0.0.1.
    healthcheck:
      test:
        - CMD
        - python
        - -c
        - >-
          import sys, urllib.request as u;
          o = u.build_opener(u.ProxyHandler({}));
          sys.exit(0 if o.open("http://127.0.0.1:8000/api/v1/health", timeout=4).status == 200 else 1)
      interval: 30s
      timeout: 6s
      retries: 3
      start_period: 30s
    depends_on:
      migrate:
        condition: service_completed_successfully
    expose:
      - "8000"

  worker:
    build: ./backend
    restart: unless-stopped
    env_file: .env
    command: ["fintracker", "worker"]
    # the worker has no port; it touches a file every 10 s (`worker/scheduler.py: _heartbeat`)
    healthcheck:
      test:
        - CMD
        - python
        - -c
        - >-
          import os, sys, time;
          sys.exit(0 if time.time() - os.path.getmtime("/tmp/fintracker-worker-heartbeat") < 60 else 1)
      interval: 30s
      timeout: 5s
      retries: 3
      start_period: 60s
    depends_on:
      migrate:
        condition: service_completed_successfully

  caddy:
    image: docker.io/library/caddy:2-alpine
    restart: unless-stopped
    environment:
      DOMAIN: ${DOMAIN:?set DOMAIN in .env}
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./deploy/Caddyfile:/etc/caddy/Caddyfile:ro
      - ./app/build/web:/srv/app:ro
      - caddy_data:/data
      - caddy_config:/config
    depends_on:
      - api

  pg-backup:
    image: docker.io/library/postgres:17-alpine
    restart: unless-stopped
    entrypoint: ["sh", "-c"]
    # nightly logical dump, keep 14 days; copy ./backups off-site with rclone/cron on the host
    command:
      - |
        while true; do
          ts=$(date +%F_%H%M)
          pg_dump -h db -U "$$POSTGRES_USER" -d "$$POSTGRES_DB" -Fc -f "/backups/fintracker_$$ts.dump" && \
            find /backups -name 'fintracker_*.dump' -mtime +14 -delete
          sleep 86400
        done
    environment:
      POSTGRES_DB: ${POSTGRES_DB}
      POSTGRES_USER: ${POSTGRES_USER}
      PGPASSWORD: ${POSTGRES_PASSWORD}
    volumes:
      - ./backups:/backups
    depends_on:
      db:
        condition: service_healthy

volumes:
  pgdata:
  caddy_data:
  caddy_config: