name: CI

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

jobs:
  test:
    env:
      RUNNER_TOOL_CACHE: /toolcache
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: [3.11]
    steps:
      - name: Checkout
        uses: actions/checkout@v4

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

      - name: Locate pip cache directory
        id: pip-cache-dir
        # extra output for debugging
        run: |
          echo "dir=$(python -m pip cache dir)" >> "$GITHUB_OUTPUT"
          echo "dir=$(python -m pip cache dir)"

      - name: Cache pip
        uses: actions/cache@v4
        with:
          path: ${{ steps.pip-cache-dir.outputs.dir }}
          key: ${{ runner.os }}-py-${{ matrix.python-version }}-pip-${{ hashFiles('**/requirements.txt') }}
          restore-keys: |
            ${{ runner.os }}-py-${{ matrix.python-version }}-pip-
            ${{ runner.os }}-pip-

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          python -m pip install -r requirements.txt

      - name: Run tests
        run: |
          pytest -q tests

      - name: Upload test results (artifact)
        if: always()
        uses: actions/upload-artifact@v3
        with:
          name: pytest-results
          path: tests

  build-image:
    runs-on: ubuntu-latest
    needs: test
    env:
      DEFAULT_BRANCH: main
      REGISTRY_URL: ${{ secrets.REGISTRY_URL }}
      REGISTRY_USERNAME: ${{ secrets.REGISTRY_USERNAME }}
      REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Collect workflow metadata
        id: meta
        shell: bash
        run: |
          ref_name="${GITHUB_REF_NAME:-${GITHUB_REF##*/}}"
          event_name="${GITHUB_EVENT_NAME:-}"
          sha="${GITHUB_SHA:-}"

          if [ "$ref_name" = "${DEFAULT_BRANCH:-main}" ]; then
            echo "on_default=true" >> "$GITHUB_OUTPUT"
          else
            echo "on_default=false" >> "$GITHUB_OUTPUT"
          fi

          echo "ref_name=$ref_name" >> "$GITHUB_OUTPUT"
          echo "event_name=$event_name" >> "$GITHUB_OUTPUT"
          echo "sha=$sha" >> "$GITHUB_OUTPUT"

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

      - name: Log in to registry (best-effort)
        if: ${{ steps.meta.outputs.on_default == 'true' }}
        uses: docker/login-action@v3
        continue-on-error: true
        with:
          registry: ${{ env.REGISTRY_URL }}
          username: ${{ env.REGISTRY_USERNAME }}
          password: ${{ env.REGISTRY_PASSWORD }}

      - name: Build (and optionally push) image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: Dockerfile
          push: ${{ steps.meta.outputs.on_default == 'true' && steps.meta.outputs.event_name != 'pull_request' && (env.REGISTRY_URL != '' && env.REGISTRY_USERNAME != '' && env.REGISTRY_PASSWORD != '') }}
          tags: |
            ${{ env.REGISTRY_URL }}/allucanget/contact.allucanget.biz:latest
            ${{ env.REGISTRY_URL }}/allucanget/contact.allucanget.biz:${{ steps.meta.outputs.sha }}