release.yml

name: Release

permissions:
  contents: write
  pull-requests: write

on:
  pull_request:
    types: [closed]
    branches:
      - master

jobs:
  create_release:
    name: Create release
    runs-on: ubuntu-latest
    if: github.event.pull_request.merged == true && startsWith(github.head_ref, 'release/')
    steps:
      - name: Get GitHub App token
        id: get_token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.PIPELINE_GITHUB_APP_ID }}
          private-key: ${{ secrets.PIPELINE_GITHUB_APP_PRIVATE_KEY }}
      - name: Create release
        uses: actions/github-script@v6
        env:
          RELEASE_BRANCH: ${{ github.head_ref }}
        with:
          github-token: ${{ steps.get_token.outputs.token }}
          script: |
            const tagName = process.env.RELEASE_BRANCH.split("/")[1];
            await github.rest.git.createRef({
              owner: context.repo.owner,
              repo: context.repo.repo,
              ref: `refs/tags/${tagName}`,
              sha: context.payload.pull_request.merge_commit_sha,
            });
            await github.rest.repos.createRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              generate_release_notes: true,
              tag_name: tagName,
            });