name: Continuous Integration

on:
  pull_request:
  push:
    branches:
      - master
      - 3.5.x
      - 3.4.x
      - 3.3.x
      - 3.2.x

jobs:
  ci:
    name: ci
    strategy:
      matrix:
        system: ["ubuntu-20.04"]
        jvm: ["8"]
        scala: ["2.13.10", "2.12.17"]
        espresso: ["2.4"]
        circt: ["sifive/1/24/0"]
    runs-on: ${{ matrix.system }}

    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Install Tabby OSS Cad Suite
        uses: ./.github/workflows/setup-oss-cad-suite
      - name: Install Espresso
        uses: ./.github/workflows/install-espresso
        with:
          version: ${{ matrix.espresso }}
      - name: Setup Scala
        uses: actions/setup-java@v3
        with:
          distribution: 'adopt'
          java-version: ${{ matrix.jvm }}
          cache: 'sbt'
      - name: Install CIRCT
        uses: ./.github/workflows/install-circt
        with:
          version: ${{ matrix.circt }}
      - name: Use Treadle for Pull Requests
        if: github.event_name == 'pull_request'
        run: echo "CHISEL3_CI_USE_TREADLE=1" >> $GITHUB_ENV
      - name: Test
        run: sbt ++${{ matrix.scala }} test
      - name: Binary compatibility
        run: sbt ++${{ matrix.scala }} mimaReportBinaryIssues

  doc:
    name: Formatting and Documentation
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Setup Scala
        uses: actions/setup-java@v3
        with:
          distribution: 'adopt'
          java-version: '11'
          cache: 'sbt'
      - name: Install CIRCT
        uses: ./.github/workflows/install-circt
      - name: Check Formatting
        run: sbt scalafmtCheckAll
      - name: Documentation
        run: sbt docs/mdoc unidoc

  integration:
    name: Integration Tests (w/ chiseltest)
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Install Tabby OSS Cad Suite
        uses: ./.github/workflows/setup-oss-cad-suite
      - name: Install Espresso
        uses: ./.github/workflows/install-espresso
      - name: Setup Scala
        uses: actions/setup-java@v3
        with:
          distribution: 'adopt'
          java-version: '11'
          cache: 'sbt'
      - name: Integration Tests
        run: sbt integrationTests/test

  std:
    name: Standard Library Tests
    runs-on: ubuntu-20.04
    strategy:
      matrix:
        scala: [ "2.13.10", "2.12.17" ]
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Install Tabby OSS Cad Suite
        uses: ./.github/workflows/setup-oss-cad-suite
      - name: Setup Scala
        uses: actions/setup-java@v3
        with:
          distribution: 'adopt'
          java-version: '11'
          cache: 'sbt'
      - name: Check Formatting (Scala 2.12 only)
        if: startsWith(matrix.scala, '2.12')
        run: sbt ++${{ matrix.scala }} standardLibrary/scalafmtCheckAll
      - name: Unit Tests
        run: sbt ++${{ matrix.scala }} standardLibrary/test

  # Sentinel job to simplify how we specify which checks need to pass in branch
  # protection and in Mergify. This job checks that all jobs were successful.
  #
  # When adding new jobs, please add them to `needs` below
  check-tests:
    name: "check tests"
    needs: [ci, integration, std, doc]
    runs-on: ubuntu-20.04
    if: success() # only run if all tests have passed
    outputs:
      success: ${{ steps.setoutput.outputs.success }}
    steps:
      - id: setoutput
        run: echo "success=true" >> $GITHUB_OUTPUT

  # Related to check-tests above, this job _always_ runs (even if tests fail
  # and thus check-steps is skipped). This two sentinel job approach avoids an
  # issue where failing tests causes a single sentinel job to be skipped which
  # counts as passing for purposes of branch protection.
  #
  # See: https://brunoscheufler.com/blog/2022-04-09-the-required-github-status-check-that-wasnt
  all_tests_passed:
    name: "all tests passed"
    runs-on: ubuntu-20.04
    if: always() # Always run so that we never skip this check
    needs: check-tests
      # Pass only if check-tests set its output value
    steps:
      - run: |
          PASSED="${{ needs.check-tests.outputs.success }}"
          if [[ $PASSED == "true" ]]; then
            echo "### All tests passed! :rocket:" >> $GITHUB_STEP_SUMMARY
            exit 0
          else
            echo "### One or more tests FAILED! :bangbang:" >> $GITHUB_STEP_SUMMARY
            exit 1
          fi

  # sbt ci-release publishes all cross versions so this job needs to be
  # separate from a Scala versions build matrix to avoid duplicate publishing
  publish:
    needs: [all_tests_passed]
    runs-on: ubuntu-20.04
    if: github.event_name == 'push'

    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Setup Scala
        uses: actions/setup-java@v3
        with:
          distribution: 'adopt'
          java-version: '8'
          cache: 'sbt'
      - name: Setup GPG (for Publish)
        uses: olafurpg/setup-gpg@v3
      - name: Publish
        run: sbt ci-release
        env:
          PGP_PASSPHRASE: ${{ secrets.PGP_PASSPHRASE }}
          PGP_SECRET: ${{ secrets.PGP_SECRET }}
          SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
          SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
