name: Update locales

on:
  schedule:
    - cron: "0 0 * * 5" # Every Friday at midnight UTC
  workflow_dispatch: # Allow manual triggering

permissions:
  actions: write
  contents: write
  pull-requests: write

jobs:
  update-locales:
    name: Update locales
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Use Node.js LTS
        uses: actions/setup-node@v6
        with:
          node-version: lts/*

      - name: Install dependencies
        run: npm ci

      - name: Import translations from mozilla-central
        run: npx gulp importl10n

      - name: Create Pull Request
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          if [ -z "$(git status --porcelain l10n/)" ]; then
            echo "No locale changes to commit."
            exit 0
          fi
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git switch -C update-locales
          git add l10n/
          git commit -m "l10n: Update locale files"
          git push --force origin update-locales
          gh pr create \
            --title "l10n: Update locale files" \
            --body "Automated weekly update of locale files from mozilla-central." \
            --label l10n || true
          # GITHUB_TOKEN-initiated pushes/PRs don't trigger other workflows.
          # Explicitly dispatch them so CI runs on the update-locales branch.
          for workflow in ci.yml lint.yml codeql.yml; do
            gh workflow run "$workflow" --ref update-locales
          done