action.yml

name: Create Auto-merged Pull Request

author: Typist Tech Limited

description: Create Auto-merged Pull Request

inputs:
  add-paths:
    description: >
      A comma or newline-separated list of file paths to commit.
      Paths should follow git's pathspec syntax.
      Defaults to adding all new and modified files.
  branch:
    description: The pull request branch name.
  title:
    description: The title of the pull request.
  labels:
    description: A comma or newline separated list of labels.

  # secrets
  client-id:
    description: GitHub App Client ID that will use to create, update and close the pull request.
    required: true
  private-key:
    description: GitHub App private key that will use to create, update and close the pull request.
    required: true

runs:
  using: composite
  steps:
    - name: Create GitHub App Token
      uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
      id: app-token
      with:
        client-id: ${{ inputs.client-id }}
        private-key: ${{ inputs.private-key }}
        permission-contents: write
        permission-pull-requests: write

    - name: Create Pull Request
      id: create-pull-request
      uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8.1.1
      with:
        token: ${{ steps.app-token.outputs.token }}
        commit-message: | # The blank line is important.
          ${{ inputs.title }}

          Automated commit by the `${{ github.workflow }}` workflow.
        branch: ${{ inputs.branch }}
        delete-branch: true
        sign-commits: true
        title: ${{ inputs.title }}
        body: "Automated commit by the `${{ github.workflow }}` workflow."
        labels: ${{ inputs.labels }}

    - name: Enable auto-merge for the PR
      if: steps.create-pull-request.outputs.pull-request-operation == 'created' || steps.create-pull-request.outputs.pull-request-operation == 'updated'
      run: gh pr merge --auto --squash "$PR_URL"
      shell: bash
      env:
        GH_TOKEN: ${{ steps.app-token.outputs.token }}
        PR_URL: ${{ steps.create-pull-request.outputs.pull-request-url }}