name: Build & Test

on:
  push:
    branches:
      - main
  pull_request:

jobs:
  test:
    name: Run Swift Tests (${{ matrix.name }})
    runs-on: macos-latest

    strategy:
      fail-fast: false # Don't cancel other matrix jobs when one fails
      matrix:
        include:
          - name: app
            path: .
          - name: BitLogger
            path: localPackages/BitLogger
          - name: BitFoundation
            path: localPackages/BitFoundation

    steps:
      - name: Checkout code
        uses: actions/checkout@v5

      - name: Set up Swift
        uses: swift-actions/setup-swift@v2

      - name: Cache build artifacts
        uses: actions/cache@v4
        with:
          path: ${{ matrix.path }}/.build
          key: ${{ runner.os }}-${{ matrix.name }}-${{ hashFiles(format('{0}/**/*.swift', matrix.path), format('{0}/**/Package.resolved', matrix.path)) }}
          restore-keys: |
            ${{ runner.os }}-${{ matrix.name }}-${{ hashFiles(format('{0}/**/Package.resolved', matrix.path)) }}
            ${{ runner.os }}-${{ matrix.name }}-

      - name: Run Tests
        run: swift test --parallel --quiet --enable-code-coverage --package-path ${{ matrix.path }}

      # Informational only: surfaces per-file and total line coverage in the
      # job log so coverage trends are visible on every PR. No thresholds —
      # this must never be the reason a build goes red.
      - name: Coverage summary
        run: |
          BIN_PATH=$(swift build --show-bin-path --package-path ${{ matrix.path }})
          PROF="$BIN_PATH/codecov/default.profdata"
          XCTEST=$(find "$BIN_PATH" -maxdepth 1 -name '*.xctest' | head -1)
          BINARY="$XCTEST/Contents/MacOS/$(basename "$XCTEST" .xctest)"
          if [ -f "$PROF" ] && [ -f "$BINARY" ]; then
            xcrun llvm-cov report "$BINARY" -instr-profile "$PROF" \
              -ignore-filename-regex='(Tests|\.build|checkouts|Mocks|_PreviewHelpers)' || true
          else
            echo "No coverage data found; skipping summary."
          fi

  # SPM tests above only compile the macOS slice; this job covers the
  # iOS-conditional code paths (UIKit, CoreBluetooth restoration, etc.).
  ios-build:
    name: Build iOS app (simulator)
    runs-on: macos-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v5

      - name: Build iOS (simulator, no signing)
        # arm64 only: the vendored arti.xcframework has no x86_64 simulator slice.
        run: |
          set -o pipefail
          xcodebuild -project bitchat.xcodeproj \
            -scheme "bitchat (iOS)" \
            -sdk iphonesimulator \
            -destination 'generic/platform=iOS Simulator' \
            ARCHS=arm64 \
            CODE_SIGNING_ALLOWED=NO \
            build