# Build and Push Docker Images
# Runs on every push to main branch
# 1. Lint: Black, Ruff, MyPy
# 2. Build & Push: Docker images to registry

name: Build

on:
  push:
    branches: [ main ]

env:
  POETRY_VERSION: 2.2.1
  PYTHON_VERSION: "3.12"
  REGISTRY: ${{ vars.PACKAGES_REGISTRY }}
  IMAGE_NAME: ${{ gitea.repository }}

jobs:
  lint:
    name: Code Quality Checks
    runs-on: ubuntu-latest

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

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Cache Poetry installation
        uses: actions/cache@v4
        with:
          path: ~/.local
          key: poetry-${{ runner.os }}-${{ env.POETRY_VERSION }}

      - name: Install Poetry
        run: |
          curl -sSL https://install.python-poetry.org | python3 -
          echo "$HOME/.local/bin" >> $GITHUB_PATH

      - name: Cache Poetry dependencies
        uses: actions/cache@v4
        with:
          path: |
            .venv
            ~/.cache/pypoetry
          key: poetry-deps-${{ runner.os }}-${{ env.PYTHON_VERSION }}-${{ hashFiles('**/poetry.lock') }}
          restore-keys: |
            poetry-deps-${{ runner.os }}-${{ env.PYTHON_VERSION }}-

      - name: Install dependencies
        run: |
          poetry config virtualenvs.in-project true
          poetry install --no-root

      - name: Run Black
        run: poetry run black --check src/ tests/

      - name: Run Ruff
        run: poetry run ruff check src/ tests/

      - name: Run MyPy
        run: poetry run mypy src/

  build-and-push:
    name: Build & Push Docker Images
    runs-on: ubuntu-latest
    needs: lint

    strategy:
      matrix:
        component: [api, chat, worker, frontend]

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

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          buildkitd-flags: --debug

      - name: Cache Docker layers
        uses: actions/cache@v4
        with:
          path: /tmp/.buildx-cache
          key: buildx-${{ matrix.component }}-${{ github.sha }}
          restore-keys: |
            buildx-${{ matrix.component }}-
            buildx-

      - name: Log in to Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ vars.PACKAGES_REGISTRY }}
          username: ${{ secrets.USERNAME }}
          password: ${{ secrets.TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ vars.PACKAGES_REGISTRY }}/${{ env.IMAGE_NAME }}/${{ matrix.component }}
          tags: |
            type=ref,event=branch
            type=sha,prefix={{branch}}-
            type=raw,value=latest

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: deploy/docker/Dockerfile.${{ matrix.component }}
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: |
            type=local,src=/tmp/.buildx-cache
            type=registry,ref=${{ vars.PACKAGES_REGISTRY }}/${{ env.IMAGE_NAME }}/${{ matrix.component }}:buildcache
          cache-to: |
            type=local,dest=/tmp/.buildx-cache-new,mode=max
            type=registry,ref=${{ vars.PACKAGES_REGISTRY }}/${{ env.IMAGE_NAME }}/${{ matrix.component }}:buildcache,mode=max

      - name: Rotate Docker cache
        run: |
          rm -rf /tmp/.buildx-cache
          mv /tmp/.buildx-cache-new /tmp/.buildx-cache || true