name: Action on PR labeled

# This workflow has write permissions on the repo
# It must not checkout a PR and run untrusted code

on:
  pull_request_target:
    types:
      - labeled

permissions:
  pull-requests: 'write'

jobs:
  comment-on-migration-guide-label:
    runs-on: ubuntu-latest
    if: github.event.label.name == 'M-Needs-Migration-Guide'
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 2
      - name: Get changes
        id: get_changes
        shell: bash {0}
        run: |
          git fetch --depth=1 origin $BASE_SHA
          git diff --exit-code $BASE_SHA $HEAD_SHA -- ./release-content/migration-guides
          echo "found_changes=$?" >> $GITHUB_OUTPUT
        env:
          BASE_SHA: ${{ github.event.pull_request.base.sha }}
          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
      - uses: actions/github-script@v7
        if: steps.get_changes.outputs.found_changes == '0'
        with:
          script: |
            await github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `It looks like your PR is a breaking change, but **you didn't provide a migration guide**.

              Please review the [instructions for writing migration guides](https://github.com/bevyengine/bevy/tree/main/release-content/migration_guides.md), then expand or revise the content in the [migration guides directory](https://github.com/bevyengine/bevy/tree/main/release-content/migration-guides) to reflect your changes.`
            })
  comment-on-release-note-label:
    runs-on: ubuntu-latest
    if: github.event.label.name == 'M-Needs-Release-Note'
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 2
      - name: Get changes
        id: get_changes
        shell: bash {0}
        run: |
          git fetch --depth=1 origin $BASE_SHA
          git diff --exit-code $BASE_SHA $HEAD_SHA -- ./release-content/release-notes
          echo "found_changes=$?" >> $GITHUB_OUTPUT
        env:
          BASE_SHA: ${{ github.event.pull_request.base.sha }}
          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
      - uses: actions/github-script@v7
        if: steps.get_changes.outputs.found_changes == '0'
        with:
          script: |
            await github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `It looks like your PR has been selected for a highlight in the next release blog post, but **you didn't provide a release note**.

              Please review the [instructions for writing release notes](https://github.com/bevyengine/bevy/tree/main/release-content/release_notes.md), then expand or revise the content in the [release notes directory](https://github.com/bevyengine/bevy/tree/main/release-content/release_notes) to showcase your changes.`
            })