name: Build and Push Docker Image

on:
  push:
    branches:
      - main
    tags:
      - 'v*'
  pull_request:
    branches:
      - main
  workflow_dispatch:

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

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to GitHub Container Registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels)
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha,prefix=sha-
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          platforms: linux/amd64

  release:
    if: startsWith(github.ref, 'refs/tags/v')
    needs: build-and-push
    runs-on: ubuntu-latest
    permissions:
      contents: write
      packages: write

    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Set up Helm
        uses: azure/setup-helm@v4

      - name: Extract version from tag
        id: version
        run: |
          TAG=${GITHUB_REF#refs/tags/}
          VERSION=${TAG#v}
          echo "tag=${TAG}" >> $GITHUB_OUTPUT
          echo "version=${VERSION}" >> $GITHUB_OUTPUT
          echo "🚀 Creating release for ${TAG}"

      - name: Package and Push Helm Chart
        run: |
          helm registry login ghcr.io \
            --username ${{ github.actor }} \
            --password ${{ secrets.GITHUB_TOKEN }}
          helm package chart/
          helm push devcontainer-${{ steps.version.outputs.version }}.tgz oci://ghcr.io/cpfarhood/charts

      - name: Generate Release Notes
        id: notes
        run: |
          # Get commits since last tag
          PREV_TAG=$(git describe --tags --abbrev=0 ${{ steps.version.outputs.tag }}^ 2>/dev/null || echo "")
          if [ -z "$PREV_TAG" ]; then
            COMMITS=$(git log --pretty=format:"- %s (%h)" ${{ steps.version.outputs.tag }})
          else
            COMMITS=$(git log --pretty=format:"- %s (%h)" ${PREV_TAG}..${{ steps.version.outputs.tag }})
          fi

          cat << EOF > release-notes.md
          ## 🚀 Release ${{ steps.version.outputs.version }}

          ### Changes
          ${COMMITS}

          ### Docker Image
          \`\`\`bash
          docker pull ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.version.outputs.tag }}
          \`\`\`

          ### Helm Chart
          \`\`\`bash
          helm install devcontainer oci://ghcr.io/cpfarhood/charts/devcontainer --version ${{ steps.version.outputs.version }}
          \`\`\`
          EOF

          echo "notes<<EOF" >> $GITHUB_OUTPUT
          cat release-notes.md >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

      - name: Create GitHub Release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ steps.version.outputs.tag }}
          release_name: Release ${{ steps.version.outputs.tag }}
          body: ${{ steps.notes.outputs.notes }}
          draft: false
          prerelease: false