ci-api.yml

name: CI — API Service

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

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

jobs:
  lint:
    name: Lint & Import Check (API)
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref || github.ref_name }}
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"
          cache: "pip"

      - name: Install lint dependencies
        run: |
          pip install flake8 black isort
          [ -f api/requirements.txt ] && pip install -r api/requirements.txt || true

      - name: Black auto-format
        run: black api/

      - name: isort auto-fix import order
        run: isort api/

      - name: Commit formatting fixes (if any)
        uses: stefanzweifel/git-auto-commit-action@v5
        with:
          commit_message: "style: auto-format api/ with black & isort [skip ci]"
          file_pattern: "api/**/*.py"

      - name: Flake8 lint
        run: flake8 api/ --max-line-length=100 --ignore=E203,W503

      - name: Python import check (catch broken imports)
        run: |
          cd api
          python -c "import ast, sys, pathlib
          errors = []
          for f in pathlib.Path('.').rglob('*.py'):
              try:
                  ast.parse(f.read_text())
              except SyntaxError as e:
                  errors.append(f'{f}: {e}')
          if errors:
              print('\n'.join(errors)); sys.exit(1)
          print('All Python files parsed OK')"

  build-and-push:
    name: Build & Push API Image
    runs-on: ubuntu-latest
    needs: lint
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

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

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=sha,prefix=sha-
            type=raw,value=latest,enable={{is_default_branch}}

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

      - name: Build and push API Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: Dockerfile.api
          push: ${{ github.ref == 'refs/heads/main' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max