on: [pull_request]

name: Check pull request

concurrency:
  group: ${{ github.head_ref }}
  cancel-in-progress: true

jobs:
  check-codestyle:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v2.4.0
      with:
        fetch-depth: 0

    - name: Check if relevant files have changed
      uses: actions/github-script@v5.1.0
      id: service-changed
      with:
        result-encoding: string
        script: |
          const script = require('.github/check-changed-files.js')
          return await script({github, context})

    - name: Set up JDK
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses : actions/setup-java@v2.4.0
      with :
        distribution : 'zulu'
        java-version : '17'
        cache: 'gradle'

    - name: Copy CI gradle.properties
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties

    - name: Check codestyle
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses: gradle/gradle-build-action@v2.1.1
      with:
        arguments: spotlessCheck

  unit-tests:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v2.4.0
      with:
        fetch-depth: 0

    - name: Check if relevant files have changed
      uses: actions/github-script@v5.1.0
      id: service-changed
      with:
        result-encoding: string
        script: |
          const script = require('.github/check-changed-files.js')
          return await script({github, context})

    - name: Set up JDK
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses : actions/setup-java@v2.4.0
      with :
        distribution : 'zulu'
        java-version : '17'
        cache: 'gradle'

    - name: Copy CI gradle.properties
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties

    - name: Run unit tests
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses: gradle/gradle-build-action@v2.1.1
      with:
        arguments: test -PslimTests

    - name: (Fail-only) Upload test report
      if: failure()
      uses: actions/upload-artifact@v2.3.1
      with:
          name: Test report
          path: app/build/reports

  build-apks:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v2.4.0
      with:
        fetch-depth: 0

    - name: Check if relevant files have changed
      uses: actions/github-script@v5.1.0
      id: service-changed
      with:
        result-encoding: string
        script: |
          const script = require('.github/check-changed-files.js')
          return await script({github, context})

    - name: Set up JDK
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses : actions/setup-java@v2.4.0
      with :
        distribution : 'zulu'
        java-version : '17'
        cache: 'gradle'

    - name: Copy CI gradle.properties
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties

    - name: Build debug APKs
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses: gradle/gradle-build-action@v2.1.1
      with:
        arguments: assembleFreeDebug assembleNonFreeDebug

  check-api:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v2.4.0
      with:
        fetch-depth: 0

    - name: Check if relevant files have changed
      uses: actions/github-script@v5.1.0
      id: service-changed
      with:
        result-encoding: string
        script: |
          const script = require('.github/check-changed-files.js')
          return await script({github, context})

    - name: Set up JDK
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses : actions/setup-java@v2.4.0
      with :
        distribution : 'zulu'
        java-version : '17'
        cache: 'gradle'

    - name: Copy CI gradle.properties
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties

    - name: Check library API
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses: gradle/gradle-build-action@v2.1.1
      with:
        arguments: apiCheck

  lint-debug:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v2.4.0
      with:
        fetch-depth: 0

    - name: Check if relevant files have changed
      uses: actions/github-script@v5.1.0
      id: service-changed
      with:
        result-encoding: string
        script: |
          const script = require('.github/check-changed-files.js')
          return await script({github, context})

    - name: Set up JDK
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses : actions/setup-java@v2.4.0
      with :
        distribution : 'zulu'
        java-version : '17'
        cache: 'gradle'

    - name: Copy CI gradle.properties
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties

    - name: Run Lint on debug variants
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses: gradle/gradle-build-action@v2.1.1
      with:
        arguments: lintDebug

  code-coverage:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v2.4.0
      with:
        fetch-depth: 0

    - name: Check if relevant files have changed
      uses: actions/github-script@v5.1.0
      id: service-changed
      with:
        result-encoding: string
        script: |
          const script = require('.github/check-changed-files.js')
          return await script({github, context})

    - name: Set up JDK
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses : actions/setup-java@v2.4.0
      with :
        distribution : 'zulu'
        java-version : '17'
        cache: 'gradle'

    - name: Copy CI gradle.properties
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties

    - name: Generate coverage reports with kotlinx-kover
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses: gradle/gradle-build-action@v2.1.1
      with:
        arguments: koverXmlReport

    - name: Export coverage XMLs
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      id: coverage-export
      shell: bash
      run: |
        REPORTS="$(find ./build/coverage-reports/ -maxdepth 1 -type f -printf "${GITHUB_WORKSPACE}/%p," -name "*.xml")"
        REPORTS="${REPORTS::${#REPORTS}-1}"
        echo ::set-output name=REPORT_PATHS::${REPORTS}

    - name: Publish JaCoCo report to PR
      if: false
      uses: madrapps/jacoco-report@v1.2
      with:
        paths: ${{ steps.coverage-export.outputs.REPORT_PATHS }}
        token: ${{ secrets.GITHUB_TOKEN }}
        min-coverage-overall: 0
        min-coverage-changed-files: 40
        title: Code Coverage