name: "Auto PullRequest"
description: "Auto Create PR & Merge"
author: VelocityLight

inputs:
  GIT_ACTION_BOT:
    required: true
    description: "git token [environment variable]"
  authur:
    required: true
  assignees:
    required: true
  title:
    required: true
  body:
    required: false
    default: ""
  auto_pr_merge:
    required: false
    description: "auto pr merge or not"
    type: boolean
    default: false

outputs:
  pull-request-number:
    description: "PullRequest Number"
    value: ${{ steps.cpr.outputs.pull-request-number }}
  pull-request-url:
    description: "PullRequest Url"
    value: ${{ steps.cpr.outputs.pull-request-url }}

runs:
  using: "composite"
  steps:
    - name: create pull request
      uses: peter-evans/create-pull-request@v3
      id: cpr
      with:
        token: ${{ inputs.GIT_ACTION_BOT }}
        committer: GitHub <noreply@github.com>
        author: ${{ inputs.author }}
        signoff: false
        branch-suffix: timestamp
        delete-branch: true
        assignees: ${{ inputs.assignees }}
        title: ${{ inputs.title }}
        body: |
          Auto PR:
          - ${{ inputs.body }}
        commit-message: '[create-pull-request] automated change'

    - name: automerge
      if: ${{ inputs.auto_pr_merge }} && steps.cpr.outputs.pull-request-operation == 'created'
      uses: peter-evans/enable-pull-request-automerge@v1
      with:
        token: ${{ inputs.GIT_ACTION_BOT }}
        pull-request-number: ${{ steps.cpr.outputs.pull-request-number }}
        merge-method: squash