name: Build and Push Docker Images

on:
  push:
    branches:
      - main           # Pushes to main → tags as "latest"
      - development    # Pushes to development → tags as "dev"
    tags:
      - 'v*.*.*'       # Version tags (v1.0.0, v1.2.3, etc.) → tags as version number
  workflow_dispatch:   # Allows manual trigger from GitHub UI

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push:
    name: Build and Push Docker Image
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      # Step 1: Download the code
      - name: 📥 Checkout code
        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4

      # Step 2: Set up QEMU for multi-platform builds (ARM, AMD64, etc.)
      - name: 🔧 Set up QEMU
        uses: docker/setup-qemu-action@c7c53464625b32c7a7e944ae62b3e17d2b600130 # v3

      # Step 3: Set up Docker Buildx (advanced Docker builder)
      - name: 🔧 Set up Docker Buildx
        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3

      # Step 4: Log in to GitHub Container Registry
      - name: 🔐 Log in to GitHub Container Registry
        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Step 5: Figure out what tags to use
      - name: 🏷️ Extract metadata (tags, labels)
        id: meta
        uses: docker/metadata-action@318604b99e75e41977312d83839a89be02ca4893 # v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            # Tag "latest" for main branch
            type=raw,value=latest,enable={{is_default_branch}}
            # Tag "dev" for development branch
            type=raw,value=dev,enable=${{ github.ref == 'refs/heads/development' }}
            # Tag version numbers from git tags (v1.0.0 → 1.0.0)
            type=semver,pattern={{version}}
            # Tag major.minor from git tags (v1.2.3 → 1.2)
            type=semver,pattern={{major}}.{{minor}}
            # Tag major from git tags (v1.2.3 → 1)
            type=semver,pattern={{major}}
            # Tag with git SHA for tracking (first 7 characters)
            type=sha,prefix=sha-,format=short

      # Step 6: Build the frontend first
      - name: 🎨 Build frontend
        run: |
          cd frontend
          npm ci
          npm run build

      # Step 7: Build and push Docker image
      - name: 🐳 Build and push Docker image
        uses: docker/build-push-action@ca052bb54ab0790a636c9b5f226502c73d547a25 # v5
        with:
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      # Step 8: Create a summary
      - name: 📋 Create summary
        run: |
          echo "## 🎉 Docker Image Built Successfully!" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### 📦 Image Details" >> $GITHUB_STEP_SUMMARY
          echo "- **Registry**: GitHub Container Registry (ghcr.io)" >> $GITHUB_STEP_SUMMARY
          echo "- **Repository**: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Tags**: " >> $GITHUB_STEP_SUMMARY
          echo '```' >> $GITHUB_STEP_SUMMARY
          echo "${{ steps.meta.outputs.tags }}" >> $GITHUB_STEP_SUMMARY
          echo '```' >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### 🚀 How to Use" >> $GITHUB_STEP_SUMMARY
          echo '```bash' >> $GITHUB_STEP_SUMMARY
          echo "docker pull ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest" >> $GITHUB_STEP_SUMMARY
          echo "docker run -d -p 8080:8080 -v caddy_data:/app/data ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest" >> $GITHUB_STEP_SUMMARY
          echo '```' >> $GITHUB_STEP_SUMMARY

  test-image:
    name: Test Docker Image
    needs: build-and-push
    runs-on: ubuntu-latest

    steps:
      # Step 1: Figure out which tag to test
      - name: 🏷️ Determine image tag
        id: tag
        run: |
          if [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
            echo "tag=latest" >> $GITHUB_OUTPUT
          elif [[ "${{ github.ref }}" == "refs/heads/development" ]]; then
            echo "tag=dev" >> $GITHUB_OUTPUT
          elif [[ "${{ github.ref }}" == refs/tags/v* ]]; then
            echo "tag=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
          else
            echo "tag=sha-$(echo ${{ github.sha }} | cut -c1-7)" >> $GITHUB_OUTPUT
          fi

      # Step 2: Pull the image we just built
      - name: 📥 Pull Docker image
        run: docker pull ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.tag }}

      # Step 3: Start the container
      - name: 🚀 Run container
        run: |
          docker run -d \
            --name test-container \
            -p 8080:8080 \
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.tag }}

      # Step 4: Wait for it to start
      - name: ⏳ Wait for container to be ready
        run: sleep 10

      # Step 5: Check if the health endpoint works
      - name: 🏥 Test health endpoint
        run: |
          response=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:8080/api/v1/health)
          if [ $response -eq 200 ]; then
            echo "✅ Health check passed!"
          else
            echo "❌ Health check failed with status $response"
            docker logs test-container
            exit 1
          fi

      # Step 6: Check the logs for errors
      - name: 📋 Check container logs
        if: always()
        run: docker logs test-container

      # Step 7: Clean up
      - name: 🧹 Stop container
        if: always()
        run: docker stop test-container && docker rm test-container

      # Step 8: Summary
      - name: 📋 Create test summary
        if: always()
        run: |
          echo "## 🧪 Docker Image Test Results" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "- **Image**: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.tag }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Health Check**: ${{ job.status == 'success' && '✅ Passed' || '❌ Failed' }}" >> $GITHUB_STEP_SUMMARY