browserslist-database-update.yml

name: Browserslist Database Update

on:
  schedule:
    - cron: '0 0 1 * *'

  workflow_dispatch:

concurrency:
  group: browserslist-db-update
  cancel-in-progress: false

jobs:
  update-browserslist:
    runs-on: ubuntu-latest
    steps:
      - name: '[Prepare] Checkout'
        uses: actions/checkout@v5
        with:
          token: ${{ secrets.CI_TOKEN }}
      - name: '[Prepare] Setup CI (mise + dependencies)'
        uses: ./.github/actions/ci-setup

      - name: '[Update] browserslist database'
        run: pnpm dlx update-browserslist-db@latest

      - name: '[Check] Detect pnpm-lock.yaml changes'
        id: check
        run: |
          if git diff --quiet -- pnpm-lock.yaml; then
            echo "has_changes=false" >> "$GITHUB_OUTPUT"
          else
            echo "has_changes=true" >> "$GITHUB_OUTPUT"
          fi
      - name: '[Check] No changes detected'
        if: steps.check.outputs.has_changes == 'false'
        run: echo "browserslist-db is already up to date"
      - name: '[Check] Display detected changes'
        if: steps.check.outputs.has_changes == 'true'
        run: |
          echo "Changes detected in pnpm-lock.yaml:"
          git diff --stat -- pnpm-lock.yaml

      - name: '[Check] Detect existing remote branch'
        id: branch
        if: steps.check.outputs.has_changes == 'true'
        run: |
          BRANCH_NAME=chore/update-browserslist-db-$(date -u +%Y-%m)
          if git ls-remote --exit-code --heads origin "$BRANCH_NAME" >/dev/null 2>&1; then
            echo "::notice::Remote branch $BRANCH_NAME already exists — skipping PR creation."
            echo "exists=true" >> "$GITHUB_OUTPUT"
          else
            echo "exists=false" >> "$GITHUB_OUTPUT"
          fi

      - name: 'Create Pull Request'
        if: steps.check.outputs.has_changes == 'true' && steps.branch.outputs.exists == 'false'
        uses: ./.github/actions/pr-creation
        with:
          ci-token: ${{ secrets.CI_TOKEN }}