name: Check Code Formatting

on:
  push:
    branches: [ master, 'robolectric-*.x' ]
    paths-ignore:
      - '**.md'

  pull_request:
    branches: [ master, google ]
    paths-ignore:
      - '**.md'

permissions:
  contents: read

jobs:
  check_code_formatting:
    runs-on: ubuntu-20.04

    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Set up JDK 11
        uses: actions/setup-java@v3
        with:
          distribution: 'zulu'
          java-version: 11

      - uses: gradle/gradle-build-action@v2

      - name: Download google-java-format 1.9
        run: |
          curl -L -o $HOME/google-java-format.jar https://github.com/google/google-java-format/releases/download/v1.15.0/google-java-format-1.15.0-all-deps.jar
          curl -L -o $HOME/google-java-format-diff.py https://raw.githubusercontent.com/google/google-java-format/v1.15.0/scripts/google-java-format-diff.py
          chmod +x $HOME/google-java-format-diff.py
      - name: Check Java formatting
        run: |
          diff=$(git diff -U0 $(git merge-base HEAD origin/master) | $HOME/google-java-format-diff.py --google-java-format-jar=$HOME/google-java-format.jar -p1)
          if [[ $diff ]]; then
            echo "Please run google-java-format on the changes in this pull request"
            git diff -U0 $(git merge-base HEAD origin/master) | $HOME/google-java-format-diff.py --google-java-format-jar=$HOME/google-java-format.jar -p1
            exit 1
          fi

      - name: Check Kotlin formatting
        run: |
          ./gradlew spotlessCheck