google_fonts_update.yml

# Runs a generator script to update the fonts in the google_fonts package.
# Updates the CHANGELOG, pubspec, and creates a pull request if there are changes.
name: Update google_fonts' fonts

on:
  schedule:
    - cron: "30 1 1,15 * *"
  workflow_dispatch: # Enable manual run from Github

# Declare default permissions as read only.
permissions: read-all

jobs:
  update-fonts:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
      actions: write # Required for the cancel action
    steps:
      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
      - name: Clone Flutter repository with beta channel
        uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1 # v1.5.3
        with:
          channel: beta
          cache: true

      - run: flutter pub get
        working-directory: packages/google_fonts

      - run: dart pub global activate cider

      - run: dart generator/generator.dart
        working-directory: packages/google_fonts

      - run: cider version
        id: new_version
        working-directory: packages/google_fonts

      - run: dart format
        working-directory: packages/google_fonts

      - name: Read families_diff file
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        id: get_families_diff
        with:
          script: |
            const fs = require('fs');
            return fs.readFileSync('packages/google_fonts/generator/families_diff','utf8').toString();
          result-encoding: string

      - name: Cancel workflow if there is no diff
        uses: andymckay/cancel-action@a955d435292c0d409d104b57d8e78435a93a6ef1 # v0.5
        if: steps.get_families_diff.outputs.result == ''

      - name: If cancelling workflow, allow for enough time to do so
        run: sleep 15s
        shell: bash
        if: steps.get_families_diff.outputs.result == ''

      - uses: peter-evans/create-pull-request@c5a7806660adbe173f04e3e038b0ccdcd758773c # v6.1.0
        with:
          token: ${{ secrets.MATERIAL_ROBOT_TOKEN }}
          committer: material-robot <featherless+materialrobot@google.com>
          commit-message: |
            [google_fonts] update fonts

            ${{ steps.get_families_diff.outputs.result }}
          base: main
          branch: create-pull-request/update
          delete-branch: true
          author: material-robot <featherless+materialrobot@google.com>
          title: Update `google_fonts` to ${{ steps.new_version.outputs.result }}
          body: |
            # Summary
            ${{ steps.get_families_diff.outputs.result }}

            Please note that all existing fonts are subject to being updated.