backend-docker.yml

name: Backend Docker Build

on:
  push:
    branches: [main]
    paths:
      - 'backend/**'
      - '.github/workflows/backend-docker.yml'
  pull_request:
    branches: [main]
    paths:
      - 'backend/**'

permissions:
  contents: write
  packages: write
  actions: write

env:
  IMAGE_NAME: tellmemo-backend

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Get version
        id: version
        run: |
          # Get the latest backend tag or start at 0.0.0
          LATEST_TAG=$(git tag -l "backend-v*" --sort=-v:refname | head -1 | sed 's/backend-v//' || echo "0.0.0")

          # Increment patch version
          IFS='.' read -ra VER <<< "$LATEST_TAG"
          MAJOR=${VER[0]:-0}
          MINOR=${VER[1]:-0}
          PATCH=${VER[2]:-0}
          PATCH=$((PATCH + 1))
          NEW_VERSION="$MAJOR.$MINOR.$PATCH"

          echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
          echo "Building backend version: $NEW_VERSION"

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

      - name: Log in to Docker Hub
        uses: docker/login-action@v4
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: ./backend
          file: ./backend/Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: |
            ${{ secrets.DOCKER_USERNAME }}/${{ env.IMAGE_NAME }}:${{ github.ref == 'refs/heads/main' && 'latest' || 'develop' }}
            ${{ secrets.DOCKER_USERNAME }}/${{ env.IMAGE_NAME }}:${{ steps.version.outputs.version }}
            ${{ secrets.DOCKER_USERNAME }}/${{ env.IMAGE_NAME }}:${{ github.sha }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Create git tag
        uses: actions/github-script@v7
        with:
          script: |
            const tagName = 'refs/tags/backend-v${{ steps.version.outputs.version }}';
            try {
              await github.rest.git.createRef({
                owner: context.repo.owner,
                repo: context.repo.repo,
                ref: tagName,
                sha: context.sha
              });
              console.log(`Created tag: ${tagName}`);
            } catch (error) {
              if (error.status === 422) {
                console.log(`Tag ${tagName} already exists, skipping creation`);
              } else {
                throw error;
              }
            }

      - name: Create GitHub Release
        uses: actions/github-script@v7
        with:
          script: |
            const tagName = `backend-v${{ steps.version.outputs.version }}`;
            const releaseName = `Backend v${{ steps.version.outputs.version }}`;
            const branch = '${{ github.ref }}' === 'refs/heads/main' ? 'main' : 'develop';
            const version = '${{ steps.version.outputs.version }}';
            const sha = '${{ github.sha }}';
            const dockerUsername = '${{ secrets.DOCKER_USERNAME }}';
            const imageName = '${{ env.IMAGE_NAME }}';
            const commitMessage = `${{ github.event.head_commit.message }}`.replace(/`/g, '\\`').replace(/\$/g, '\\$');

            const bodyText = '## Backend Release v' + version + '\n\n' +
              'Branch: ' + branch + '\n' +
              'Commit: ' + sha + '\n\n' +
              'Docker Images:\n' +
              '- `' + dockerUsername + '/' + imageName + ':' + version + '`\n' +
              '- `' + dockerUsername + '/' + imageName + ':' + (branch === 'main' ? 'latest' : 'develop') + '`\n' +
              '- `' + dockerUsername + '/' + imageName + ':' + sha + '`\n\n' +
              'Changes:\n' + commitMessage;

            await github.rest.repos.createRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              tag_name: tagName,
              name: releaseName,
              body: bodyText,
              draft: false,
              prerelease: branch !== 'main'
            });