name: Helm Chart Build and Release

on:
  push:
    branches: [main]
    tags:
      - 'v*.*.*'  # Trigger release if tag matches Chart.yaml version
  pull_request:
    branches: [main]
  workflow_dispatch:
    inputs:
      version:
        description: 'Expected Chart.yaml version (for validation only)'
        required: false
        type: string

jobs:
  build-and-release-helm:
    runs-on: ubuntu-latest
    # Only run on main branch pushes or tags (not on PRs)
    if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Fetch all history for proper versioning

      - name: Install Helm
        uses: azure/setup-helm@v3
        with:
          version: "latest"

      - name: Determine version
        id: version
        run: |
          # Always get version from Chart.yaml
          VERSION=$(grep '^version:' helm/api7ee-demo-k8s/Chart.yaml | awk '{print $2}')

          # Determine if this is a release based on triggers
          IS_RELEASE="false"

          # Check if this is a tag push that matches the chart version
          if [[ "${{ github.ref }}" == refs/tags/v* ]]; then
            TAG_VERSION=${GITEA_REF_NAME#v}
            if [ "$TAG_VERSION" = "$VERSION" ]; then
              IS_RELEASE="true"
              echo "📌 Release version (tag matches Chart.yaml): ${VERSION}"
            else
              echo "⚠️ Warning: Tag version ($TAG_VERSION) doesn't match Chart.yaml version ($VERSION)"
              echo "📌 Using Chart.yaml version: ${VERSION}"
            fi
          elif [ "${{ github.event_name }}" = "workflow_dispatch" ] && [ -n "${{ github.event.inputs.version }}" ]; then
            # Manual trigger with version - treat as release if version matches
            INPUT_VERSION="${{ github.event.inputs.version }}"
            if [ "$INPUT_VERSION" = "$VERSION" ]; then
              IS_RELEASE="true"
              echo "📌 Manual release for version: ${VERSION}"
            else
              echo "⚠️ Warning: Input version ($INPUT_VERSION) doesn't match Chart.yaml version ($VERSION)"
              echo "📌 Using Chart.yaml version: ${VERSION}"
            fi
          else
            echo "📌 Development build with version: ${VERSION}"
          fi

          echo "VERSION=${VERSION}" >> $GITHUB_ENV
          echo "IS_RELEASE=${IS_RELEASE}" >> $GITHUB_ENV
          echo "version=${VERSION}" >> $GITHUB_OUTPUT
          echo "is_release=${IS_RELEASE}" >> $GITHUB_OUTPUT

      - name: Lint Helm chart
        run: |
          helm lint helm/api7ee-demo-k8s/

      - name: Prepare Helm chart for packaging
        run: |
          # Create a temporary copy of the chart for packaging
          cp -r helm/api7ee-demo-k8s /tmp/api7ee-demo-k8s-chart

          # Update image registry and repository to match Gitea
          sed -i "s|registry: gitea.server_url|registry: ${{ gitea.server_url }}|g" /tmp/api7ee-demo-k8s-chart/values.yaml
          sed -i "s|repository: gitea.repository/|repository: ${{ gitea.repository }}/|g" /tmp/api7ee-demo-k8s-chart/values.yaml

          # For releases, update image tags to use the version tag
          if [ "${IS_RELEASE}" = "true" ]; then
            # Update image tags to use the release version
            sed -i "s|tag: \"main\"|tag: \"v${VERSION}\"|g" /tmp/api7ee-demo-k8s-chart/values.yaml
            echo "📝 Chart prepared for release with version ${VERSION}"
          else
            # Keep main tag for development builds
            echo "📝 Chart prepared for development with version ${VERSION}"
          fi

      - name: Package Helm chart
        run: |
          # Package using the version from Chart.yaml
          helm package /tmp/api7ee-demo-k8s-chart

          # Store chart filename for later use
          echo "CHART_FILE=api7ee-demo-k8s-${VERSION}.tgz" >> $GITHUB_ENV

          echo "📦 Packaged chart: api7ee-demo-k8s-${VERSION}.tgz"

      - name: Push Helm chart to Gitea Package Registry
        run: |
          # Upload Helm chart to Gitea package registry
          echo "📤 Uploading chart to Gitea Package Registry..."

          curl --fail-with-body \
            -H "Authorization: token ${{ secrets.PACKAGES_PUSH_TOKEN }}" \
            -X POST \
            -F "chart=@${CHART_FILE}" \
            https://${{ gitea.server_url }}/api/packages/${{ gitea.repository_owner }}/helm/api/charts

          echo "✅ Helm chart pushed successfully to Gitea Package Registry"
          echo "📦 Chart: ${CHART_FILE}"
          echo "🔗 Registry URL: https://${{ gitea.server_url }}/api/packages/${{ gitea.repository_owner }}/helm"

      - name: Create Release (for tagged versions only)
        if: env.IS_RELEASE == 'true'
        run: |
          echo "🎉 Creating release for version ${VERSION}"

          # Generate release notes
          cat > RELEASE_NOTES.md << EOF
          ## Helm Chart Release v${VERSION}

          ### Installation

          \`\`\`bash
          # Add the Helm repository
          helm repo add api7ee https://${{ gitea.server_url }}/api/packages/${{ gitea.repository_owner }}/helm
          helm repo update

          # Install the chart
          helm install my-api7ee api7ee/api7ee-demo-k8s --version ${VERSION}

          # Install with custom values
          helm install my-api7ee api7ee/api7ee-demo-k8s --version ${VERSION} -f values.yaml
          \`\`\`

          ### Upgrade

          \`\`\`bash
          helm upgrade my-api7ee api7ee/api7ee-demo-k8s --version ${VERSION}
          \`\`\`

          ### Docker Images

          This chart uses the following Docker images:
          - Web: \`${{ gitea.server_url }}/${{ gitea.repository }}/web:v${VERSION}\`
          - API: \`${{ gitea.server_url }}/${{ gitea.repository }}/api:v${VERSION}\`

          ### Chart Download

          Direct download: [api7ee-demo-k8s-${VERSION}.tgz](https://${{ gitea.server_url }}/${{ gitea.repository }}/releases/download/v${VERSION}/api7ee-demo-k8s-${VERSION}.tgz)
          EOF

          # Create release using Gitea API
          RELEASE_DATA=$(jq -n \
            --arg tag "v${VERSION}" \
            --arg name "v${VERSION}" \
            --arg body "$(cat RELEASE_NOTES.md)" \
            --arg target "${{ gitea.sha }}" \
            '{
              tag_name: $tag,
              target_commitish: $target,
              name: $name,
              body: $body,
              draft: false,
              prerelease: false
            }')

          # Create the release
          RELEASE_RESPONSE=$(curl -s -X POST \
            -H "Authorization: token ${{ secrets.PACKAGES_PUSH_TOKEN }}" \
            -H "Content-Type: application/json" \
            -d "${RELEASE_DATA}" \
            "https://${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}/releases")

          # Get release ID
          RELEASE_ID=$(echo $RELEASE_RESPONSE | jq -r '.id')

          if [ "$RELEASE_ID" != "null" ] && [ -n "$RELEASE_ID" ]; then
            echo "✅ Release created with ID: $RELEASE_ID"

            # Upload chart file as release asset
            curl -X POST \
              -H "Authorization: token ${{ secrets.PACKAGES_PUSH_TOKEN }}" \
              -H "Content-Type: application/gzip" \
              --data-binary "@${CHART_FILE}" \
              "https://${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}/releases/${RELEASE_ID}/assets?name=api7ee-demo-k8s-${VERSION}.tgz"

            # Upload release notes as asset
            curl -X POST \
              -H "Authorization: token ${{ secrets.PACKAGES_PUSH_TOKEN }}" \
              -H "Content-Type: text/markdown" \
              --data-binary "@RELEASE_NOTES.md" \
              "https://${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}/releases/${RELEASE_ID}/assets?name=RELEASE_NOTES.md"

            echo "✅ Release assets uploaded successfully"
          else
            echo "⚠️ Failed to create release"
            echo "Response: $RELEASE_RESPONSE"
          fi

      - name: Summary
        run: |
          echo "## 🎉 Helm Chart Build Summary"
          echo ""
          echo "- **Version:** ${VERSION}"
          echo "- **Type:** $([ "${IS_RELEASE}" = "true" ] && echo "Release" || echo "Development Build")"
          echo "- **Source:** Chart.yaml version (not modified)"
          echo "- **Chart:** ${CHART_FILE}"
          echo "- **Registry:** https://${{ gitea.server_url }}/api/packages/${{ gitea.repository_owner }}/helm"
          echo ""
          echo "### Installation Commands"
          echo '```bash'
          echo "helm repo add api7ee https://${{ gitea.server_url }}/api/packages/${{ gitea.repository_owner }}/helm"
          echo "helm repo update"
          echo "helm install my-api7ee api7ee/api7ee-demo-k8s --version ${VERSION}"
          echo '```'

  lint-only:
    runs-on: ubuntu-latest
    # Only run on PRs
    if: github.event_name == 'pull_request'
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Install Helm
        uses: azure/setup-helm@v3
        with:
          version: "latest"

      - name: Lint Helm chart
        run: |
          echo "🔍 Linting Helm chart for PR..."
          helm lint helm/api7ee-demo-k8s/
          echo "✅ Helm chart linting passed"