release-plz.yml

name: 'release-plz'

on:
  # PR 作成
  workflow_dispatch:
  push:
    branches:
      - main
  schedule:
    # AM 6:00(JST)
    - cron: '0 21 * * *'

  # Release 作成
  pull_request:
    branches:
      - main
    types:
      - closed
    paths:
      - '.github/release-please-manifest.json'

concurrency:
  group: release-plz

jobs:
  create-pr:
    if: ${{ github.event_name != 'pull_request' && !contains(github.event.head_commit.message, 'workflows/release') }}
    runs-on: ubuntu-24.04
    timeout-minutes: 15

    steps:
      # https://github.com/marketplace/actions/checkout
      - name: Checkout
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      # https://github.com/marketplace/actions/create-github-app-token
      - name: Create GitHub App Token
        uses: actions/create-github-app-token@c1a285145b9d317df6ced56c09f525b5c2b6f755 # v1.11.1
        id: app-token
        with:
          app-id: ${{ vars.BOT_APP_ID }}
          private-key: ${{ secrets.BOT_PRIVATE_KEY }}

      - name: Get new version
        id: resolve-versions
        uses: ./.github/actions/resolve-versions
        with:
          github-token: ${{ steps.app-token.outputs.token }}

      # https://github.com/marketplace/actions/github-script
      - name: Generate release notes
        id: generate_notes
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        with:
          github-token: ${{ steps.app-token.outputs.token }}
          result-encoding: string
          script: |
            const script = require('./.github/scripts/generate-release-note-body.cjs');
            return await script({
              github,
              context,
              version: '${{ steps.resolve-versions.outputs.new-version }}'
            });

      # https://github.com/marketplace/actions/github-script
      - name: Existing branch
        id: existing-branch
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        with:
          github-token: ${{ steps.app-token.outputs.token }}
          result-encoding: json
          script: |
            const newVersion = '${{ steps.resolve-versions.outputs.new-version }}';
            try {
              const { data } = await github.rest.git.getRef({
                ...context.repo,
                ref: `heads/workflows/release/v${newVersion}`,
              });
              console.log(`data: ${JSON.stringify(data)}`);
              return data;
            } catch (error) {
              console.log(`error: ${error}`);
              return null;
            }

      # https://github.com/marketplace/actions/github-script
      - name: Create pull request
        if: ${{ steps.existing-branch.outputs.result == 'null' }}
        id: create_pr
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        with:
          github-token: ${{ steps.app-token.outputs.token }}
          script: |
            const fs = require('fs');

            const newVersion = '${{ steps.resolve-versions.outputs.new-version }}';
            const branchName = `workflows/release/v${newVersion}`;

            // Create a new branch
            await github.rest.git.createRef({
              ...context.repo,
              ref: `refs/heads/${branchName}`,
              sha: context.sha,
            });

            const manifestFilePath = '.github/release-please-manifest.json';

            if (!fs.existsSync(manifestFilePath)) {
              throw new Error(`File not found: ${manifestFilePath}`);
            }

            const content = fs.readFileSync(manifestFilePath, 'utf8');
            const manifest = JSON.parse(content);
            manifest["."] = newVersion;
            const newContent = Buffer.from(JSON.stringify(manifest, null, 2)).toString('base64');

            // Get the current SHA of the file
            const { data: file } = await github.rest.repos.getContent({
              ...context.repo,
              path: manifestFilePath,
              ref: branchName,
            });

            // Update the file in the new branch
            await github.rest.repos.createOrUpdateFileContents({
              ...context.repo,
              path: manifestFilePath,
              message: `chore: release ${newVersion}`,
              content: newContent,
              sha: file.sha,
              branch: branchName,
            });

            // Create a pull request
            const pr = await github.rest.pulls.create({
              ...context.repo,
              title: `chore: release ${newVersion}`,
              head: branchName,
              base: 'main',
              body: `${{ steps.generate_notes.outputs.result }}`,
            });

            return pr.data.html_url;

      - name: Display PR URL
        if: ${{ steps.existing-branch.outputs.result == 'null' }}
        run: |
          echo "Pull Request URL: ${{ steps.create_pr.outputs.result }}"

      # https://github.com/marketplace/actions/github-script
      - name: Update pull request
        if: ${{ steps.existing-branch.outputs.result != 'null' }}
        id: update-pr
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        with:
          github-token: ${{ steps.app-token.outputs.token }}
          script: |
            const fs = require('fs');

            const mainRef = await github.rest.git.getRef({
              ...context.repo,
              ref: 'heads/main',
            });

            // Update branch
            const newVersion = '${{ steps.resolve-versions.outputs.new-version }}';
            const branchName = `workflows/release/v${newVersion}`;
            await github.rest.git.updateRef({
              ...context.repo,
              ref: `heads/${branchName}`,
              sha: mainRef.data.object.sha,
              force: true,
            });

            const manifestFilePath = '.github/release-please-manifest.json';
            if (!fs.existsSync(manifestFilePath)) {
              throw new Error(`File not found: ${manifestFilePath}`);
            }

            const content = fs.readFileSync(manifestFilePath, 'utf8');
            const manifest = JSON.parse(content);
            manifest["."] = newVersion;
            const newContent = Buffer.from(JSON.stringify(manifest, null, 2)).toString('base64');

            // Get the current SHA of the file
            const { data: file } = await github.rest.repos.getContent({
              ...context.repo,
              path: manifestFilePath,
              ref: branchName,
            });

            // Update the file in the branch
            await github.rest.repos.createOrUpdateFileContents({
              ...context.repo,
              path: manifestFilePath,
              message: `chore: release ${newVersion}`,
              content: newContent,
              sha: file.sha,
              branch: branchName,
            });

            // Get pull request
            const { data } = await github.rest.pulls.list({
              ...context.repo,
              state: 'open',
              head: `${context.repo.owner}:${branchName}`,
            });

            // Update pull request
            const pr = data[0];
            console.log(`pr: ${JSON.stringify(pr)}`);
            await github.rest.pulls.update({
              ...context.repo,
              pull_number: pr.number,
              body: `${{ steps.generate_notes.outputs.result }}`,
            });

            return pr.html_url;

      - name: Display PR URL
        if: ${{ steps.existing-branch.outputs.result != 'null' }}
        run: |
          echo "Pull Request URL: ${{ steps.update-pr.outputs.result }}"

  create-release:
    if: ${{ github.event.pull_request.merged == true }}
    runs-on: ubuntu-24.04
    timeout-minutes: 15

    steps:
      # https://github.com/marketplace/actions/checkout
      - name: Checkout
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      # https://github.com/marketplace/actions/create-github-app-token
      - name: Create GitHub App Token
        uses: actions/create-github-app-token@c1a285145b9d317df6ced56c09f525b5c2b6f755 # v1.11.1
        id: app-token
        with:
          app-id: ${{ vars.BOT_APP_ID }}
          private-key: ${{ secrets.BOT_PRIVATE_KEY }}

      - name: Get new version
        id: resolve-versions
        uses: ./.github/actions/resolve-versions
        with:
          github-token: ${{ steps.app-token.outputs.token }}

      # https://github.com/marketplace/actions/github-script
      - name: Create release
        id: create-release
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        with:
          github-token: ${{ steps.app-token.outputs.token }}
          result-encoding: string
          script: |
            const releaseVersion = '${{ steps.resolve-versions.outputs.current-version }}';
            const release = await github.rest.repos.createRelease({
              ...context.repo,
              tag_name: `v${releaseVersion}`,
              generate_release_notes: true,
            });

            return release.data.html_url;

      # https://github.com/marketplace/actions/github-script
      - name: Comment on PR
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        with:
          github-token: ${{ steps.app-token.outputs.token }}
          script: |
            const releaseHtmlUrl = '${{ steps.create-release.outputs.result }}';
            await github.rest.issues.createComment({
              ...context.repo,
              issue_number: context.payload.number,
              body: `:robot: Release is at ${releaseHtmlUrl} :sunflower:`
            });