prepare-release.yml

name: 'prepare release'

on:
  workflow_dispatch:
  push:
    branches:
      - main
    paths:
      - 'package*.json'
      - 'src/**'
  pull_request_target:
    types: [labeled]

env:
  BASE_BRANCH: 'main'
  HEAD_BRANCH: 'prepare-release'

jobs:
  label:
    name: Clear label
    runs-on: ubuntu-latest
    if: contains(github.event.pull_request.labels.*.name, 'prepare-release')
    steps:
      - name: Clear label
        uses: actions/github-script@v6
        env:
          NUMBER: ${{ github.event.number }}
        with:
          script: |
            const { NUMBER } = process.env;
            await github.rest.issues.removeLabel({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: NUMBER,
              name: 'prepare-release',
            });

  preparation:
    name: Prepare release
    runs-on: ubuntu-latest
    if: >
      contains('push,workflow_dispatch', github.event_name) ||
      contains(github.event.pull_request.labels.*.name, 'prepare-release')
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          ref: ${{ env.BASE_BRANCH }}
          fetch-depth: 0

      - name: Setup nodejs
        uses: actions/setup-node@v3
        with:
          node-version: 12

      - name: Bump version
        run: |
          git tag | grep -P 'v\d+\.\d+\.\d+-beta.\d+' -o | xargs git tag -d
          npx standard-version --skip.commit --skip.tag
          sed 's/^### \[/## [/' -i CHANGELOG.md
          npx prettier --write CHANGELOG.md  --prose-wrap never --ignore-path ./gitignore

      - name: Get version from package.json
        uses: actions/github-script@v6
        id: version
        with:
          result-encoding: string
          script: |
            const version = require('./package.json').version;
            core.setOutput('version', version);
            core.setOutput('title', 'chore(release): 🔖 release v' + version);

      - name: Create commit
        env:
          REMOTE_URL: https://x-access-token:${{secrets.GITHUB_TOKEN}}@github.com/${{github.repository}}.git
        run: |
          git config --global user.name 'github-actions[bot]'
          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
          git add .
          git commit -m 'chore(release): 🔖 release v${{steps.version.outputs.version}}'
          git branch -D '${{ env.HEAD_BRANCH }}' 2>&1 | sed 's/error/warning/'
          git checkout -b '${{ env.HEAD_BRANCH }}'
          git remote set-url origin '${{ env.REMOTE_URL }}'
          git push -f -u origin '${{ env.HEAD_BRANCH }}'

      - name: Get changelog context
        id: changelog-reader
        uses: mindsers/changelog-reader-action@v2.2.2
        with:
          version: ${{ steps.version.outputs.version }}
          path: ./CHANGELOG.md

      - name: Prepare release PR
        uses: actions/github-script@v6
        env:
          TITLE: ${{ steps.version.outputs.title }}
          CHANGELOG: ${{ steps.changelog-reader.outputs.changes }}
        with:
          script: |
            const { HEAD_BRANCH, BASE_BRANCH, TITLE, CHANGELOG } = process.env;
            const query = {
              owner: context.repo.owner,
              repo: context.repo.repo,
              head: `${HEAD_BRANCH}`,
              base: `${BASE_BRANCH}`,
              title: `${TITLE}`,
              body: `${CHANGELOG}`,
            };
            core.debug(`query:\n${JSON.stringify(query, null, 2)}`);
            const resp = await github.rest.pulls.list({
                owner: context.repo.owner,
                repo: context.repo.repo,
                state: 'open',
                head: `${context.repo.owner}:${HEAD_BRANCH}`,
                base: `${BASE_BRANCH}`,
                direction: 'desc',
            });
            core.debug(`resp:\n${JSON.stringify(resp, null, 2)}`);
            try {
              const pull_number = resp.data[0].number;
              core.info(`[info]: pull_number: ${pull_number}`);
              query.pull_number = pull_number;
              const resp1 = await github.rest.pulls.update(query);
              core.info('[info]: Update release PR successfully!');
              core.info(`[info]: See pull request in ${resp1.data.html_url}`);
            } catch (err) {
              if (err.message === 'Cannot read property \'number\' of undefined') {
                core.info('[info]: Not found previous pull request.');
                core.info('[info]: Try to create a new pull request.');
                const resp2 = await github.rest.pulls.create(query);
                core.info('[info]: Create release PR successfully!');
                core.info(`[info]: See pull request in ${resp2.data.html_url}`);
              } else core.setFailed(`Prepare release PR failed with error:\n${err}`);
            }
            core.info(`[info]: Prepare release PR successfully!`);