pr.yaml

name: PR
on:
  pull_request_target:
    branches: [main]
    types:
      - opened
      - edited
      - synchronize

permissions:
  pull-requests: write
  statuses: write

jobs:
  validate:
    name: Validate PR title
    runs-on: ubuntu-latest
    steps:
      - name: Lint PR title
        id: lint
        uses: amannn/action-semantic-pull-request@v6
        env:
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

      - name: Display linting error as comment
        if: always() && (steps.lint.outputs.error_message != null)
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          header: lint-error
          message: |
            Thanks for opening a pull request! This project requires pull request titles to follow the [Conventional Commits specification](https://www.conventionalcommits.org/en/v1.0.0/), and it looks like your proposed title needs to be adjusted.

            Details:
            ```
            ${{steps.lint.outputs.error_message}}
            ```

      - name: Remove linting error comment
        if: steps.lint.outputs.error_message == null
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          header: lint-error
          delete: true

      - name: Check release condition
        id: release-condition
        run: |
          release_change_regex='(feat)|(fix)'
          breaking_change_regex='.+!:'
          change_type='${{steps.lint.outputs.type}}'
          pr_title='${{github.event.pull_request.title}}'
          if [[ "$change_type" =~ $release_change_regex || "$pr_title" =~ $breaking_change_regex ]]; then
            echo 'release-specifier=will create a release' >> "$GITHUB_OUTPUT"
          else
            echo 'release-specifier=will not create a release' >> "$GITHUB_OUTPUT"
          fi

      - name: Display release information as comment
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          header: release-info
          message: |
            This pull request **${{steps.release-condition.outputs.release-specifier}}**, as determined by applying the pull request title to the [Conventional Commits specification](https://www.conventionalcommits.org/en/v1.0.0/).