name: folio app
description: Install the toolchain folio needs on one platform, and build the app there.

inputs:
  platform:
    description: android, ios or web
    required: true

runs:
  using: composite
  steps:
    - name: Set up the JDKs
      uses: actions/setup-java@v5
      with:
        distribution: temurin
        # The metro gradle plugin folio builds with needs a 21 runtime; the
        # sidecar toolchain pins 17. Both are installed so gradle can pick.
        java-version: |
          17
          21

    # The iOS app builds its Kotlin framework through the folio gradle project,
    # which configures :app:androidApp, so this is needed off Android too.
    # `make sanderling-android` wants it as well, for the sidecar JAR.
    - name: Set up Android SDK
      if: inputs.platform != 'web'
      uses: android-actions/setup-android@40fd30fb8d7440372e1316f5d1809ec01dcd3699 # v4.0.1

    - name: Cache Gradle
      if: inputs.platform != 'ios'
      uses: actions/cache@v6
      with:
        path: |
          ~/.gradle/caches
          ~/.gradle/wrapper
        key: folio-gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
        restore-keys: |
          folio-gradle-${{ runner.os }}-

    # idb-companion is not in homebrew-core, only in facebook/homebrew-fb, so
    # it has to be named by its full tap path. xcodegen and just are core.
    - name: Install idb-companion, xcodegen and just
      if: inputs.platform == 'ios'
      shell: bash
      run: brew install facebook/fb/idb-companion xcodegen just

    # Both asset tarballs are built by the prepare scripts, and the runner
    # bundle is an xcodebuild of companion/Sources. Keyed on the scripts and
    # the versions the Makefile embeds, so a later run reuses them. This has to
    # land before `make sanderling-ios`, which is what consumes them.
    - name: Cache the companion and runner bundles
      if: inputs.platform == 'ios'
      uses: actions/cache@v6
      with:
        path: |
          internal/driver/ioscompanion/companionassets/assets
          internal/driver/ioscompanion/runnerassets/assets
        key: ios-assets-${{ runner.os }}-${{ hashFiles('internal/driver/ioscompanion/companionassets/prepare.sh', 'companion/prepare.sh', 'companion/project.yml', 'companion/Sources/**') }}

    # Without this the emulator falls back to software rendering and every
    # step costs several seconds.
    - name: Enable KVM
      if: inputs.platform == 'android'
      shell: bash
      run: |
        echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' \
          | sudo tee /etc/udev/rules.d/99-kvm4all.rules
        sudo udevadm control --reload-rules
        sudo udevadm trigger --name-match=kvm

    - name: Build the folio APK
      if: inputs.platform == 'android'
      shell: bash
      working-directory: examples/folio
      run: ./gradlew :app:androidApp:assembleDebug

    - name: Build the folio wasmJs app
      if: inputs.platform == 'web'
      shell: bash
      working-directory: examples/folio
      run: ./gradlew :app:webApp:wasmJsBrowserDevelopmentExecutableDistribution