# =============================================================================
# Forgejo Git Server - Docker Compose Stack
# Forgejo 11.0.8 LTS with PostgreSQL, Caddy, and Actions Runner
# =============================================================================

services:
  # ---------------------------------------------------------------------------
  # PostgreSQL Database
  # ---------------------------------------------------------------------------
  forgejo-db:
    image: postgres:16-alpine
    container_name: forgejo-db
    restart: unless-stopped
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-forgejo}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?POSTGRES_PASSWORD required}
      POSTGRES_DB: ${POSTGRES_DB:-forgejo}
    volumes:
      - /mnt/forgejo/forgejo-db:/var/lib/postgresql/data
    networks:
      - forgejo-internal
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-forgejo} -d ${POSTGRES_DB:-forgejo}"]
      interval: 10s
      timeout: 5s
      retries: 5

  # ---------------------------------------------------------------------------
  # Forgejo Git Server
  # Using rootless image for better security
  # ---------------------------------------------------------------------------
  forgejo:
    image: codeberg.org/forgejo/forgejo:11.0.8-rootless
    container_name: forgejo
    restart: unless-stopped
    depends_on:
      forgejo-db:
        condition: service_healthy
    environment:
      # Database
      FORGEJO__database__DB_TYPE: postgres
      FORGEJO__database__HOST: forgejo-db:5432
      FORGEJO__database__NAME: ${POSTGRES_DB:-forgejo}
      FORGEJO__database__USER: ${POSTGRES_USER:-forgejo}
      FORGEJO__database__PASSWD: ${POSTGRES_PASSWORD:?POSTGRES_PASSWORD required}

      # Server configuration
      FORGEJO__server__DOMAIN: ${FORGEJO_DOMAIN:?FORGEJO_DOMAIN required}
      FORGEJO__server__ROOT_URL: https://${FORGEJO_DOMAIN}/
      FORGEJO__server__SSH_DOMAIN: ${FORGEJO_DOMAIN}
      FORGEJO__server__SSH_PORT: 2222
      FORGEJO__server__SSH_LISTEN_PORT: 2222
      FORGEJO__server__START_SSH_SERVER: "true"
      FORGEJO__server__HTTP_PORT: 3000
      FORGEJO__server__LFS_START_SERVER: "true"

      # Security
      FORGEJO__security__INSTALL_LOCK: "true"
      FORGEJO__security__SECRET_KEY: ${FORGEJO_SECRET_KEY:?FORGEJO_SECRET_KEY required}
      FORGEJO__security__INTERNAL_TOKEN: ${FORGEJO_INTERNAL_TOKEN:?FORGEJO_INTERNAL_TOKEN required}
      FORGEJO__security__PASSWORD_COMPLEXITY: "lower,upper,digit"
      FORGEJO__security__MIN_PASSWORD_LENGTH: "12"

      # OAuth2 JWT secret
      FORGEJO__oauth2__JWT_SECRET: ${FORGEJO_JWT_SECRET:?FORGEJO_JWT_SECRET required}

      # Service settings
      FORGEJO__service__DISABLE_REGISTRATION: "false"
      FORGEJO__service__REQUIRE_SIGNIN_VIEW: "false"
      FORGEJO__service__ENABLE_NOTIFY_MAIL: "false"

      # Actions (CI/CD)
      FORGEJO__actions__ENABLED: "true"
      FORGEJO__actions__DEFAULT_ACTIONS_URL: "https://code.forgejo.org"

      # Repository settings
      FORGEJO__repository__DEFAULT_BRANCH: "main"
      FORGEJO__repository__ENABLE_PUSH_CREATE_USER: "true"
      FORGEJO__repository__ENABLE_PUSH_CREATE_ORG: "true"

      # LFS settings
      FORGEJO__lfs__PATH: /data/lfs

      # Webhook settings (for CI/CD)
      FORGEJO__webhook__ALLOWED_HOST_LIST: "private"
      FORGEJO__webhook__SKIP_TLS_VERIFY: "false"

      # Log settings
      FORGEJO__log__MODE: "console"
      FORGEJO__log__LEVEL: "Info"

    volumes:
      - /mnt/forgejo/forgejo-data:/data
      - /etc/timezone:/etc/timezone:ro
      - /etc/localtime:/etc/localtime:ro
    networks:
      - forgejo-internal
      - forgejo-public
    ports:
      # Git SSH - exposed publicly
      - "2222:2222"
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:3000/api/healthz"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 60s

  # ---------------------------------------------------------------------------
  # Caddy Reverse Proxy
  # Automatic HTTPS with Let's Encrypt
  # ---------------------------------------------------------------------------
  caddy:
    image: caddy:2-alpine
    container_name: forgejo-caddy
    restart: unless-stopped
    depends_on:
      forgejo:
        condition: service_healthy
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./Caddyfile:/etc/caddy/Caddyfile:ro
      - caddy_data:/data
      - caddy_config:/config
    networks:
      - forgejo-public
    environment:
      FORGEJO_DOMAIN: ${FORGEJO_DOMAIN}

  # ---------------------------------------------------------------------------
  # Forgejo Actions Runner
  # For CI/CD pipelines
  # ---------------------------------------------------------------------------
  forgejo-runner:
    image: code.forgejo.org/forgejo/runner:6.3.1
    container_name: forgejo-runner
    restart: unless-stopped
    depends_on:
      forgejo:
        condition: service_healthy
      docker-dind:
        condition: service_started
    environment:
      DOCKER_HOST: tcp://docker-dind:2376
      DOCKER_TLS_VERIFY: "1"
      DOCKER_CERT_PATH: /certs/client
    volumes:
      - /mnt/forgejo/runner-data:/data
      - dind-certs-client:/certs/client:ro
    networks:
      - forgejo-internal
      - dind-network
    command: >
      sh -c '
        if [ ! -f /data/.runner ]; then
          echo "Runner not registered. Please run registration command first."
          echo "See README for registration instructions."
          sleep infinity
        fi
        forgejo-runner daemon --config /data/config.yaml
      '

  # ---------------------------------------------------------------------------
  # Docker-in-Docker for Runner
  # Allows building Docker images in CI/CD
  # ---------------------------------------------------------------------------
  docker-dind:
    image: docker:27-dind
    container_name: forgejo-dind
    restart: unless-stopped
    privileged: true
    environment:
      DOCKER_TLS_CERTDIR: /certs
    volumes:
      - dind-certs-ca:/certs/ca
      - dind-certs-client:/certs/client
      - dind-storage:/var/lib/docker
    networks:
      - dind-network
    # Resource limits for 1GB RAM droplet
    deploy:
      resources:
        limits:
          memory: 512M

# =============================================================================
# Networks
# =============================================================================
networks:
  forgejo-internal:
    driver: bridge
    internal: true
  forgejo-public:
    driver: bridge
  dind-network:
    driver: bridge

# =============================================================================
# Volumes
# =============================================================================
volumes:
  caddy_data:
  caddy_config:
  dind-certs-ca:
  dind-certs-client:
  dind-storage: