name: Flutter CI setup
description: Set up Flutter dependencies and restore build_runner state for CI jobs.

inputs:
  setup-java:
    description: Whether this job needs the pinned Java toolchain.
    required: false
    default: 'false'
  build-runner-cache-key:
    description: Cache key for build_runner state.
    required: true

runs:
  using: composite
  steps:
    - name: Set up Java
      if: inputs.setup-java == 'true'
      uses: actions/setup-java@v5
      with:
        distribution: temurin
        java-version: ${{ env.JAVA_VERSION }}
        cache: gradle
    - name: Set up Flutter
      uses: subosito/flutter-action@v2
      with:
        flutter-version: ${{ env.FLUTTER_VERSION }}
        channel: stable
        cache: true
    - name: Get dependencies
      shell: bash
      run: flutter pub get
    - name: Restore build_runner state
      uses: actions/cache@v4
      with:
        path: .dart_tool/build
        key: ${{ inputs.build-runner-cache-key }}