name: Run post release processes
on: 
  release:
    types: [released]

env:
    GIT_COMMITTER_NAME: 'WooCommerce Bot'
    GIT_COMMITTER_EMAIL: 'no-reply@woocommerce.com'
    GIT_AUTHOR_NAME: 'WooCommerce Bot'
    GIT_AUTHOR_EMAIL: 'no-reply@woocommerce.com'

jobs:
  update-changelog-in-trunk:
    name: Update changelog in trunk
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v3
      - name: Get tag name
        id: tag
        uses: actions/github-script@v6
        with:
          script: |
            const tag = ${{ toJSON( github.event.release.tag_name ) }}

            console.log( `::set-output name=tag::release/${ tag.substring( 0, 3 ) }` )

      - name: Git fetch trunk branch
        run: git fetch origin trunk

      - name: Copy changelog.txt to vm root
        run: cp changelog.txt ../../changelog.txt

      - name: Switch to trunk branch
        run: git checkout trunk
      
      - name: Create a new branch based on trunk
        run: git checkout -b update/changelog-from-release-${{ github.event.release.tag_name }}

      - name: Copy saved changelog.txt to monorepo
        run: cp ../../changelog.txt ./changelog.txt

      - name: Commit changes
        run: git commit -am "Update changelog.txt from release ${{ github.event.release.tag_name }}"

      - name: Push branch up
        run: git push origin update/changelog-from-release-${{ github.event.release.tag_name }}

      - name: Create the PR
        uses: actions/github-script@v6
        with:
          script: |
            const body = "This PR updates the changelog.txt based on the latest release: ${{ github.event.release.tag_name }}"

            const pr = await github.rest.pulls.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              title: "Update changelog.txt from release ${{ github.event.release.tag_name }}",
              head: "update/changelog-from-release-${{ github.event.release.tag_name }}",
              base: "trunk",
              body: body
            })

            const prCreated = await github.rest.pulls.requestReviewers({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: pr.data.number,
              reviewers: ["${{ github.event.release.author.login }}"]
            })