reusable-pre-commit.yml

name: Reusable Pre-commit Workflow

on:
  workflow_call:
    inputs:
      target-branch:
        description: 'Branch to checkout and test (defaults to the calling branch)'
        required: false
        type: string
        default: ''
      enable-commit-changes:
        description: 'Whether to commit and push pre-commit fixes'
        required: false
        type: boolean
        default: true

env:
  GIT_AUTHOR_EMAIL: "packages@datadoghq.com"
  GIT_AUTHOR_NAME: "ci.datadog-api-spec"

jobs:
  pre-commit:
    runs-on: ubuntu-latest
    permissions:
      id-token: write  # Required for dd-octo-sts OIDC token
    steps:
      - name: Get GitHub token via dd-octo-sts
        id: get_token
        if: inputs.enable-commit-changes
        uses: DataDog/dd-octo-sts-action@acaa02eee7e3bb0839e4272dacb37b8f3b58ba80  # v1.0.3
        with:
          scope: DataDog/datadog-api-client-java
          policy: self.github.pre-commit.pull-requests
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0
          repository: DataDog/datadog-api-client-java
          ref: ${{ inputs.target-branch || github.event.pull_request.head.sha || github.ref }}
          token: ${{ inputs.enable-commit-changes && steps.get_token.outputs.token || github.token }}
      - uses: actions/setup-python@v4
        with:
          python-version: '3.11'
      - name: Install pre-commit
        run: python -m pip install pre-commit
      - name: set PY
        run: echo "PY=$(python -c 'import platform;print(platform.python_version())')" >> $GITHUB_ENV
      - uses: actions/cache@v3
        with:
          path: ~/.cache/pre-commit
          key: pre-commit|${{ env.PY }}|${{ hashFiles('.pre-commit-config.yaml') }}
      - name: Install Java
        uses: actions/setup-java@v3
        with:
          java-version: "16"
          distribution: "temurin"
          cache: "maven"
      - name: Determine pre-commit range
        id: commit_range
        run: |
          FROM_REF=$(git merge-base HEAD origin/master)
          echo "from_ref=$FROM_REF" >> $GITHUB_OUTPUT
          echo "to_ref=HEAD" >> $GITHUB_OUTPUT
          echo "Pre-commit will check from $FROM_REF to HEAD"
      - id: pre_commit
        name: Run pre-commit
        if: github.event.action != 'closed' && github.event.pull_request.merged != true
        run: |
          wget https://github.com/google/google-java-format/releases/download/v1.16.0/google-java-format-1.16.0-all-deps.jar -O google-java-format.jar
          pre-commit run --verbose --from-ref "${FROM_REF}" --to-ref "${TO_REF}" --show-diff-on-failure --color=always
        env:
          FROM_REF: ${{ steps.commit_range.outputs.from_ref }}
          TO_REF: ${{ steps.commit_range.outputs.to_ref }}
      - name: Commit changes
        if: failure() && inputs.enable-commit-changes
        run: |-
          git add -A
          git config user.name "${GIT_AUTHOR_NAME}"
          git config user.email "${GIT_AUTHOR_EMAIL}"
          git commit -m "pre-commit fixes"
          git push origin "HEAD:${HEAD_REF}"
          exit 1
        env:
          HEAD_REF: ${{ github.event.pull_request.head.ref }}
      - id: pre_commit_schedule
        name: Run pre-commit in schedule
        if: github.event_name == 'schedule'
        run: |
          pre-commit run --all-files --show-diff-on-failure --color=always