name: CI

on:
  push:
    branches: [main]
  pull_request:

jobs:
  analyze-and-test:
    name: Analyze & unit test
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - uses: subosito/flutter-action@v2
        with:
          flutter-version: "3.41.6"
          channel: stable
          cache: true

      - name: Install dependencies
        run: flutter pub get

      - name: Generate Drift code
        run: flutter pub run build_runner build --delete-conflicting-outputs

      - name: Check formatting
        run: dart format --set-exit-if-changed .

      - name: Analyze
        run: flutter analyze --fatal-infos

      - name: Unit + widget tests with coverage
        run: flutter test test/unit/ test/widget/ --coverage

      - name: Coverage gate
        run: dart run scripts/check_coverage.dart

  integration:
    name: Integration tests (Stalwart)
    runs-on: ubuntu-latest
    # Run integration tests only on push to main, not on every PR.
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'

    steps:
      - uses: actions/checkout@v4

      - uses: DeterminateSystems/nix-installer-action@v14

      - uses: DeterminateSystems/magic-nix-cache-action@v8

      - name: Cache FVM Flutter SDK
        uses: actions/cache@v4
        with:
          path: ~/.fvm
          key: fvm-${{ hashFiles('.fvm/fvm_config.json') }}

      - name: Cache pub packages
        uses: actions/cache@v4
        with:
          path: ~/.pub-cache
          key: pub-${{ hashFiles('pubspec.lock') }}
          restore-keys: pub-

      - name: Run integration tests
        run: |
          nix develop --command bash -c "
            fvm install --skip-pub-get &&
            fvm flutter pub get &&
            fvm flutter pub run build_runner build --delete-conflicting-outputs &&
            stalwart-dev/test.sh
          "

  integration-ui:
    name: UI Integration tests (Stalwart + Xvfb)
    runs-on: ubuntu-latest
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'

    steps:
      - uses: actions/checkout@v4

      - uses: DeterminateSystems/nix-installer-action@v14

      - uses: DeterminateSystems/magic-nix-cache-action@v8

      - name: Install Flutter Linux build dependencies
        run: |
          sudo apt-get update -q
          sudo apt-get install -y --no-install-recommends \
            libgtk-3-dev pkg-config cmake ninja-build clang \
            libsecret-1-dev

      - name: Cache FVM Flutter SDK
        uses: actions/cache@v4
        with:
          path: ~/.fvm
          key: fvm-${{ hashFiles('.fvm/fvm_config.json') }}

      - name: Cache pub packages
        uses: actions/cache@v4
        with:
          path: ~/.pub-cache
          key: pub-${{ hashFiles('pubspec.lock') }}
          restore-keys: pub-

      - name: Cache Linux debug build
        uses: actions/cache@v4
        with:
          path: |
            build/linux
            .dart_tool/flutter_build
          key: linux-debug-${{ hashFiles('pubspec.lock', 'lib/**/*.dart', 'integration_test/**/*.dart') }}
          restore-keys: linux-debug-

      - name: Run UI integration tests
        run: |
          nix develop --command bash -c "
            fvm install --skip-pub-get &&
            fvm flutter pub get &&
            fvm flutter pub run build_runner build --delete-conflicting-outputs &&
            stalwart-dev/integration_ui_test.sh
          "

  build-linux:
    name: Build Linux desktop
    runs-on: ubuntu-latest
    needs: analyze-and-test

    steps:
      - uses: actions/checkout@v4

      - name: Install GTK3, build tools and libsecret
        run: |
          sudo apt-get update -q
          sudo apt-get install -y --no-install-recommends \
            libgtk-3-dev pkg-config cmake ninja-build clang \
            libsecret-1-dev

      - uses: subosito/flutter-action@v2
        with:
          flutter-version: "3.41.6"
          channel: stable
          cache: true

      - name: Install dependencies
        run: flutter pub get

      - name: Generate Drift code
        run: flutter pub run build_runner build --delete-conflicting-outputs

      - name: Build Linux release
        run: flutter build linux --release