---
kind: pipeline
type: docker
name: nakama-server

platform:
  os: linux
  arch: arm64

workspace:
  path: /drone/src

volumes:
  - name: dockersock
    host:
      path: /var/run/docker.sock

steps:
  # -----------------------------------------------------
  # 1. Fetch latest Tags
  # -----------------------------------------------------
  - name: fetch-tags
    image: docker:24
    volumes:
      - name: dockersock
        path: /var/run/docker.sock
    commands:
      - apk add --no-cache git
      - git fetch --tags
      - |
        # Get latest Git tag and trim newline
        LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null | tr -d '\n')
        echo "Latest Git tag fetched: $LATEST_TAG"

        # Save to file for downstream steps
        echo "$LATEST_TAG" > /drone/src/LATEST_TAG.txt

        # Read back for verification
        IMAGE_TAG=$(cat /drone/src/LATEST_TAG.txt | tr -d '\n')
        echo "Image tag read from file: $IMAGE_TAG"

        # Validate
        if [ -z "$IMAGE_TAG" ]; then
          echo "❌ No git tags found! Cannot continue."
          exit 1
        fi

  # -----------------------------------------------------
  # 2. Check existing Nakama Docker image
  # -----------------------------------------------------
  - name: check-remote-image
    image: docker:24
    volumes:
      - name: dockersock
        path: /var/run/docker.sock
    commands:
      - IMAGE_TAG=$(cat /drone/src/LATEST_TAG.txt | tr -d '\n')

      - echo "Checking if lila-games/nakama-server:$IMAGE_TAG exists on remote Docker..."
      - echo "Existing Docker tags for lila-games/nakama-server:"
      - docker images --format "{{.Repository}}:{{.Tag}}" | grep "^lila-games/nakama-server" || echo "(none)"
      - |
        if docker image inspect lila-games/nakama-server:$IMAGE_TAG > /dev/null 2>&1; then
          echo "✅ Docker image lila-games/nakama-server:$IMAGE_TAG already exists — skipping build"
          exit 78
        else
          echo "⚙️ Docker image lila-games/nakama-server:$IMAGE_TAG not found — proceeding to build..."
        fi

  # -----------------------------------------------------
  # 3. Build Nakama Docker image
  # -----------------------------------------------------
  - name: build-image
    image: docker:24
    volumes:
      - name: dockersock
        path: /var/run/docker.sock
    commands:
      - IMAGE_TAG=$(cat /drone/src/LATEST_TAG.txt | tr -d '\n')

      - echo "🔨 Building Nakama image lila-games/nakama-server:latest"
      - |
        docker build --network=host \
        -t lila-games/nakama-server:$IMAGE_TAG \
        -t lila-games/nakama-server:latest \
        /drone/src

  # -----------------------------------------------------
  # 4. Push Nakama Image
  # -----------------------------------------------------
  - name: push-image
    image: docker:24
    environment:
      REGISTRY_HOST:
        from_secret: REGISTRY_HOST
      REGISTRY_USER:
        from_secret: REGISTRY_USER
      REGISTRY_PASS:
        from_secret: REGISTRY_PASS
    volumes:
      - name: dockersock
        path: /var/run/docker.sock
    commands:
      - IMAGE_TAG=$(cat /drone/src/LATEST_TAG.txt | tr -d '\n')

      - echo "🔑 Logging into registry $REGISTRY_HOST ..."
      - echo "$REGISTRY_PASS" | docker login $REGISTRY_HOST -u "$REGISTRY_USER" --password-stdin
      - echo "🏷️ Tagging images with registry prefix..."
      - docker tag lila-games/nakama-server:$IMAGE_TAG $REGISTRY_HOST/lila-games/nakama-server:$IMAGE_TAG
      - docker tag lila-games/nakama-server:$IMAGE_TAG $REGISTRY_HOST/lila-games/nakama-server:latest
      - echo "📤 Pushing lila-games/nakama-server:$IMAGE_TAG ..."
      - docker push $REGISTRY_HOST/lila-games/nakama-server:$IMAGE_TAG
      - echo "📤 Pushing lila-games/nakama-server:latest ..."
      - docker push $REGISTRY_HOST/lila-games/nakama-server:latest

  # -----------------------------------------------------
  # 5. Stop old Nakama container
  # -----------------------------------------------------
  - name: stop-old
    image: docker:24
    volumes:
      - name: dockersock
        path: /var/run/docker.sock
    commands:
      - echo "🛑 Stopping old Nakama container..."
      - docker rm -f nakama-server || true

  # -----------------------------------------------------
  # 6. Run new Nakama container
  # -----------------------------------------------------
  - name: run-container
    image: docker:24
    volumes:
      - name: dockersock
        path: /var/run/docker.sock
    environment:
      DB_ADDR:
        from_secret: POSTGRES_ADDR
      SERVER_KEY:
        from_secret: SERVER_KEY
      REGISTRY_HOST:
        from_secret: REGISTRY_HOST
    commands:
      - IMAGE_TAG=$(cat /drone/src/LATEST_TAG.txt | tr -d '\n')
      - echo "🚀 Starting Nakama server..."
      - |
        docker run -d \
          --name nakama-server \
          -p 7350:7350 \
          -p 7351:7351 \
          -p 7349:7349 \
          --restart always \
          --add-host private-pi:192.168.1.111 \
          -e DB_ADDR="$DB_ADDR" \
          -e SERVER_KEY="$SERVER_KEY" \
          lila-games/nakama-server:latest

# -----------------------------------------------------
# Pipeline trigger
# -----------------------------------------------------
trigger:
  event:
    - tag