name: Docker

on:
  push:
    branches:
      - master
    tags:
      - '*'

  pull_request:

permissions:
  contents: read

env:
  IMAGE: snegov/seafile-client

jobs:
  # Application failures must be distinguishable from packaging failures, so
  # the unit tests do not depend on the image build.
  unit-test:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: '3.11'
          cache: pip

      - name: Install dependencies
        run: pip install -r requirements-dev.txt

      - name: Run unit tests
        run: pytest -q

  test:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Validate compose example
        run: docker compose --file compose.example.yaml config --quiet

      - name: Build image
        uses: docker/build-push-action@v7
        with:
          context: .
          push: false
          load: true
          tags: ${{ env.IMAGE }}:ci

  push:
    needs: [unit-test, test]

    runs-on: ubuntu-latest
    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')

    steps:
      - uses: actions/checkout@v4

      # Every tag of a release must resolve to one manifest digest, so the
      # image is built once and all tags are attached to that single build.
      - name: Collect tags and labels
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.IMAGE }}
          tags: |
            type=ref,event=tag
          flavor: |
            latest=true

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v7
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}