name: "Lint PR"

on:
  pull_request_target:
    types:
      - opened
      - edited
      - synchronize

jobs:
  main:
    name: Validate PR title
    runs-on: ubuntu-latest
    steps:
      - uses: amannn/action-semantic-pull-request@v4
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

        with:
          # Configure which types are allowed (newline delimited).
          # Default: https://github.com/commitizen/conventional-commit-types
          types: |
            fix
            feat
          # Configure which scopes are allowed (newline delimited).
          scopes: |
            core
            ui
          # Configure that a scope must always be provided.
          requireScope: true
          # Configure which scopes (newline delimited) are disallowed in PR
          # titles. For instance by setting # the value below, `chore(release):
          # ...` and `ci(e2e,release): ...` will be rejected.
          disallowScopes: |
            release
          # Configure additional validation for the subject based on a regex.
          # This example ensures the subject doesn't start with an uppercase character.
          subjectPattern: ^(?![A-Z]).+$
          # If `subjectPattern` is configured, you can use this property to override
          # the default error message that is shown when the pattern doesn't match.
          # The variables `subject` and `title` can be used within the message.
          subjectPatternError: |
            The subject "{subject}" found in the pull request title "{title}"
            didn't match the configured pattern. Please ensure that the subject
            doesn't start with an uppercase character.
          # If you use GitHub Enterprise, you can set this to the URL of your server
          githubBaseUrl: https://github.myorg.com/api/v3
          # If the PR contains one of these labels (newline delimited), the
          # validation is skipped.
          # If you want to rerun the validation when labels change, you might want
          # to use the `labeled` and `unlabeled` event triggers in your workflow.
          ignoreLabels: |
            bot
            ignore-semantic-pull-request
          # If you're using a format for the PR title that differs from the traditional Conventional
          # Commits spec, you can use these options to customize the parsing of the type, scope and
          # subject. The `headerPattern` should contain a regex where the capturing groups in parentheses
          # correspond to the parts listed in `headerPatternCorrespondence`.
          # See: https://github.com/conventional-changelog/conventional-changelog/tree/master/packages/conventional-commits-parser#headerpattern
          headerPattern: '^(\w*)(?:\(([\w$.\-*/ ]*)\))?: (.*)$'
          headerPatternCorrespondence: type, scope, subject
          # For work-in-progress PRs you can typically use draft pull requests 
          # from GitHub. However, private repositories on the free plan don't have 
          # this option and therefore this action allows you to opt-in to using the 
          # special "[WIP]" prefix to indicate this state. This will avoid the 
          # validation of the PR title and the pull request checks remain pending.
          # Note that a second check will be reported if this is enabled.
          wip: true

          # If the PR only contains a single commit, the action will validate that
          # it matches the configured pattern.
          validateSingleCommit: true
          # Related to `validateSingleCommit` you can opt-in to validate that the PR
          # title matches a single commit to avoid confusion.
          validateSingleCommitMatchesPrTitle: true