---
kind: pipeline
type: docker
name: default

# ARM64 platform (for your Pi runner)
platform:
  os: linux
  arch: arm64

workspace:
  path: /drone/src

steps:
  # Step 1a: Git fetch tags locally
  - name: fetch-tags
    image: docker:24
    environment:
      DOCKER_HOST: unix:///var/run/docker.sock   # local Docker, if needed
    commands:
      - apk add --no-cache git
      - git fetch --tags
      - |
        LATEST_TAG=$(git describe --tags --abbrev=0)
        echo "Latest Git tag fetched: $LATEST_TAG"
        # Save to file to share with next step
        echo $LATEST_TAG > /drone/src/LATEST_TAG.txt

  # Step 1b: Check if image exists on remote LAN Docker
  - name: check-remote-image
    image: docker:24
    environment:
      DOCKER_HOST: tcp://192.168.1.111:2376   # remote Docker
    commands:
      - IMAGE_TAG=$(cat /drone/src/LATEST_TAG.txt)
      - echo "Checking if apps/homepage:$IMAGE_TAG exists on remote Docker..."
      - |
        if docker image inspect apps/homepage:$IMAGE_TAG > /dev/null 2>&1; then
          echo "✅ Docker image apps/homepage:$IMAGE_TAG already exists — skipping build";
          exit 78;   # stop pipeline gracefully
        else
          echo "⚙️ Docker image apps/homepage:$IMAGE_TAG not found — proceeding to build...";
        fi

  # Step 2: Build Docker image (dynamic tag)
  - name: build-image
    image: docker:24
    environment:
      DOCKER_HOST: tcp://192.168.1.111:2376
    commands:
      - |
        IMAGE_TAG=$(cat /drone/src/LATEST_TAG.txt)
        if [ -z "$IMAGE_TAG" ]; then
          echo "❌ No tag found in LATEST_TAG.txt — cannot build."
          exit 1
        fi
        echo "🔨 Building Docker image apps/homepage:$IMAGE_TAG ..."
        docker build --network=host -t apps/homepage:$IMAGE_TAG -t apps/homepage:latest .

  # Step 3: Stop old container (if exists)
  - name: stop-old
    image: docker:24
    environment:
      DOCKER_HOST: tcp://192.168.1.111:2376
    commands:
      - |
        echo "🛑 Stopping old container..."
        docker rm -f homepage || true

  # Step 4: Run container
  - name: run-container
    image: docker:24
    environment:
      DOCKER_HOST: tcp://192.168.1.111:2376
    commands:
      - |
        IMAGE_TAG=$(cat /drone/src/LATEST_TAG.txt)
        echo "🚀 Starting container apps/homepage:$IMAGE_TAG ..."
        docker run -d \
          --name homepage \
          -p 3001:3000 \
          -e NODE_ENV=production \
          apps/homepage:$IMAGE_TAG

# Trigger rules
trigger:
  event:
    - tag
