update-pnpm.yml

name: Update Package Manager

on:
  schedule:
    # Run every Monday at 3:27 AM
    - cron: "27 3 * * 1"

  push:
    branches:
      - main
    paths:
      - .github/workflows/update-pnpm.yml

  pull_request:
    paths:
      - .github/workflows/update-pnpm.yml

  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  check-for-new-version:
    name: Check for new pnpm version

    runs-on: ubuntu-latest

    outputs:
      new-version: ${{ steps.pnpm-info.outputs.version }}
      branch-exists: ${{ steps.check-branch.outputs.branch-exists }}

    steps:
      - name: Generate token
        id: generate-installation-token
        uses: actions/create-github-app-token@5d869da34e18e7287c1daad50e0b8ea0f506ce69 # v1.11.0
        with:
          app-id: ${{ secrets.LANEYBOT_APP_ID }}
          private-key: ${{ secrets.LANEYBOT_PRIVATE_KEY }}

      - name: Get user info
        id: get-user-info
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        env:
          LANEYBOT_APP_SLUG:
            ${{ steps.generate-installation-token.outputs.app-slug }}
        with:
          github-token: ${{ steps.generate-installation-token.outputs.token }}
          script: |
            const appSlug = process.env.LANEYBOT_APP_SLUG;
            const userSlug = `${appSlug}[bot]`;
            const user = await github.rest.users.getByUsername({
              username: userSlug
            });

            const internalID = user.data.id;

            const app = await github.rest.apps.getBySlug({
              app_slug: appSlug
            });
            const displayName = app.data.name;

            const gitEmail =`${displayName} <${internalID}+${userSlug}@users.noreply.github.com>`;
            console.log(`Calculated git email: '${gitEmail}'`);

            core.setOutput('gitEmail', gitEmail);

      - name: Checkout code
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          token: ${{ steps.generate-installation-token.outputs.token }}

      - name: Enable Corepack
        run: |
          corepack enable

      - name: Setup Node.js
        uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.1.0
        env:
          COREPACK_ENABLE_STRICT: false
        with:
          cache-dependency-path: pnpm-lock.yaml
          node-version-file: "package.json"
          cache: "pnpm"

      - name: Update Package Manager
        run: |
          corepack up

      - name: Check for changes
        id: git-check
        run: |
          git diff --exit-code package.json || echo "changes=true" >> "${GITHUB_OUTPUT}"

      - name: Get new pnpm version and packageManager field
        if: steps.git-check.outputs.changes == 'true'
        id: pnpm-info
        run: |
          VERSION="$(pnpm --version)"
          echo "version=${VERSION}" >> "${GITHUB_OUTPUT}"
          echo "package-manager=$(jq -r .packageManager package.json)" >> "${GITHUB_OUTPUT}"
          echo "update-branch=auto-merge/pnpm/${VERSION}" >> "${GITHUB_OUTPUT}"

      - name: Check if update branch exists
        if: steps.git-check.outputs.changes == 'true'
        id: check-branch
        env:
          UPDATE_BRANCH: ${{ steps.pnpm-info.outputs.update-branch }}
        run: |
          if ! git ls-remote --quiet --exit-code --heads origin "${UPDATE_BRANCH}" >/dev/null; then
            echo "branch-exists=false" >> "${GITHUB_OUTPUT}"
            exit 0
          fi

          echo "The branch \`${UPDATE_BRANCH}\` exists, skipping PR creation."
          echo "branch-exists=true" >> "${GITHUB_OUTPUT}"

      - name: Create Pull Request
        if: >
          steps.git-check.outputs.changes == 'true' &&
          steps.check-branch.outputs.branch-exists == 'false'
        uses: peter-evans/create-pull-request@5e914681df9dc83aa4e4905692ca88beb2f9e91f # v7.0.5
        with:
          author: ${{ steps.get-user-info.outputs.gitEmail }}
          # If we change things in a PR for testing, we want the raised PR to
          # include those changes.
          base:
            ${{ github.head_ref == '' && github.ref_name || github.head_ref }}
          body: |
            Update pnpm to version `${{ steps.pnpm-info.outputs.version }}`.

            Changes made:
            - Updated the `packageManager` field to `pnpm@${{ steps.pnpm-info.outputs.package-manager }}`.

            This update [was performed automatically][workflow-run] by [the "Update Package Manager" workflow][workflow].

            [workflow]: ${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}/.github/workflows/update-pnpm.yml
            [workflow-run]: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
          branch: ${{ steps.pnpm-info.outputs.update-branch }}
          commit-message: >
            chore: update packageManager field to pnpm@${{
            steps.pnpm-info.outputs.version }}
          committer: ${{ steps.get-user-info.outputs.gitEmail }}
          draft: ${{ github.event_name == 'pull_request' }}
          delete-branch: true
          labels: |
            dependencies
            automated pr
          title: >
            chore: update packageManager field to pnpm@${{
            steps.pnpm-info.outputs.version }}
          token: ${{ steps.generate-installation-token.outputs.token }}