name: Build and Publish Docker Image

on:
  pull_request:
    branches:
      - main
  push:
    branches:
      - main

jobs:
  build-and-validate:
    name: Build and Validate
    runs-on: ubuntu
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Build Docker Image
        run: |
          docker build -t threejs-test:test .

      - name: Validate Image
        run: |
          docker run --rm -d --name test-container -p 8080:80 threejs-test:test
          sleep 2
          curl -f http://localhost:8080 || exit 1
          docker stop test-container

      - name: Job Summary
        if: success()
        run: |
          SUMMARY_FILE="${FORGEJO_STEP_SUMMARY}"
          cat >> "$SUMMARY_FILE" << 'EOF'
          ## ✅ Build and Validation Complete
          
          - ✅ Docker image built successfully
          - ✅ Image validated (container started and HTTP check passed)
          
          The image is ready for deployment.
          EOF

  publish:
    name: Publish to Registry
    runs-on: ubuntu
    needs: build-and-validate
    if: github.event_name == 'push' || gitea.event_name == 'push'
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Fetch all history for tags

      - name: Login to Registry
        run: |
          echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login git.jusemon.com -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin

      - name: Determine Version
        id: version
        run: |
          # Get latest version tag
          LATEST_TAG=$(git describe --tags --match 'v*.*.*' --abbrev=0 2>/dev/null || echo "v0.0.0")
          LATEST_VERSION="${LATEST_TAG#v}"
          
          # Parse version components
          IFS='.' read -r MAJOR MINOR PATCH <<< "$LATEST_VERSION"
          MAJOR=${MAJOR:-0}
          MINOR=${MINOR:-0}
          PATCH=${PATCH:-0}
          
          # Increment patch version for each merge to main, or start at 0.1.0 if no tags exist
          if [[ "$LATEST_TAG" == "v0.0.0" ]]; then
            # First version
            NEW_VERSION="0.1.0"
          else
            # Increment patch version for each merge to main
            PATCH=$((PATCH + 1))
            NEW_VERSION="$MAJOR.$MINOR.$PATCH"
          fi
          
          echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
          echo "tag=v$NEW_VERSION" >> $GITHUB_OUTPUT
          echo "Latest tag: $LATEST_TAG"
          echo "New version: $NEW_VERSION"

      - name: Build Docker Image
        run: |
          IMAGE_NAME="git.jusemon.com/jusemon/threejs-test:${{ steps.version.outputs.version }}"
          docker build -t "$IMAGE_NAME" .
          echo "IMAGE_NAME=$IMAGE_NAME" >> $GITHUB_ENV

      - name: Push Docker Image
        run: |
          IMAGE_NAME="git.jusemon.com/jusemon/threejs-test:${{ steps.version.outputs.version }}"
          docker push "$IMAGE_NAME"
          
          # Also tag as 'latest' for main branch
          docker tag "$IMAGE_NAME" "git.jusemon.com/jusemon/threejs-test:latest"
          docker push "git.jusemon.com/jusemon/threejs-test:latest"

      - name: Generate Release Notes
        id: release_notes
        run: |
          VERSION="${{ steps.version.outputs.version }}"
          TAG="${{ steps.version.outputs.tag }}"
          IMAGE_NAME="git.jusemon.com/jusemon/threejs-test:$VERSION"
          COMMIT_HASH=$(git rev-parse HEAD)
          COMMIT_SHORT=$(git rev-parse --short HEAD)
          BUILD_DATE=$(date -u +"%Y-%m-%d %H:%M:%S UTC")
          
          # Get commits since last tag
          LATEST_TAG=$(git describe --tags --match 'v*.*.*' --abbrev=0 2>/dev/null || echo "")
          if [[ -n "$LATEST_TAG" ]]; then
            COMMITS=$(git log ${LATEST_TAG}..HEAD --pretty=format:"- %s (%h)" --no-merges)
          else
            COMMITS=$(git log --pretty=format:"- %s (%h)" --no-merges -10)
          fi
          
          # Get author of the commit
          COMMIT_AUTHOR=$(git log -1 --pretty=format:"%an <%ae>")
          
          # Read template and replace placeholders
          TEMPLATE_FILE=".forgejo/release-template.md"
          if [[ ! -f "$TEMPLATE_FILE" ]]; then
            echo "Error: Template file not found: $TEMPLATE_FILE"
            exit 1
          fi
          
          # Replace placeholders in template
          sed -e "s|{{VERSION}}|$VERSION|g" \
              -e "s|{{IMAGE_NAME}}|$IMAGE_NAME|g" \
              -e "s|{{COMMIT_HASH}}|$COMMIT_HASH|g" \
              -e "s|{{COMMIT_SHORT}}|$COMMIT_SHORT|g" \
              -e "s|{{BUILD_DATE}}|$BUILD_DATE|g" \
              -e "s|{{COMMIT_AUTHOR}}|$COMMIT_AUTHOR|g" \
              -e "s|{{COMMITS}}|$COMMITS|g" \
              "$TEMPLATE_FILE" > /tmp/release_message.txt
          
          echo "Release notes generated from template"

      - name: Create Git Tag
        run: |
          git config user.name "forgejo-actions"
          git config user.email "forgejo-actions@forgejo.io"
          TAG="${{ steps.version.outputs.tag }}"
          # Check if tag already exists
          if git rev-parse "$TAG" >/dev/null 2>&1; then
            echo "Tag $TAG already exists, skipping tag creation"
            echo "TAG_CREATED=false" >> $GITHUB_ENV
          else
            git tag -a "$TAG" -F /tmp/release_message.txt
            git push origin "$TAG"
            echo "Created tag $TAG with detailed release notes"
            echo "TAG_CREATED=true" >> $GITHUB_ENV
          fi

      - name: Job Summary
        if: success()
        run: |
          SUMMARY_FILE="${FORGEJO_STEP_SUMMARY:-/dev/stdout}"
          VERSION="${{ steps.version.outputs.version }}"
          TAG="${{ steps.version.outputs.tag }}"
          IMAGE_NAME="git.jusemon.com/jusemon/threejs-test:$VERSION"
          TAG_STATUS="${TAG_CREATED:-false}"
          
          cat >> "$SUMMARY_FILE" << EOF
          ## 🚀 Release Published
          
          **Version:** \`$VERSION\`
          **Docker Image:** \`$IMAGE_NAME\`
          **Git Tag:** \`$TAG\`
          
          ### Published Images
          - ✅ \`$IMAGE_NAME\`
          - ✅ \`git.jusemon.com/jusemon/threejs-test:latest\`
          
          ### Git Tag
          EOF
          
          if [[ "$TAG_STATUS" == "true" ]]; then
            echo "- ✅ Created and pushed \`$TAG\` with release notes" >> "$SUMMARY_FILE"
          else
            echo "- ⚠️ Tag \`$TAG\` already exists, skipped creation" >> "$SUMMARY_FILE"
          fi
          
          cat >> "$SUMMARY_FILE" << 'EOF'
          
          ### Pull Command
          ```bash
          docker pull git.jusemon.com/jusemon/threejs-test:latest
          ```
          EOF