name: Weblate Reformat
on:
  pull_request_target

jobs:
  # In order to be able to have required checks, a workflow can't be entirely
  # skipped: see https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
  paths-filter:
    name: "Changed files?"
    runs-on: ubuntu-latest
    # Only run on PRs with a target branch set of 'weblate'
    if: github.base_ref == 'weblate'
    outputs:
      matches: ${{ steps.filter.outputs.matches }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 2  # important, to fetch previous commit

      # workaround for https://github.com/dorny/paths-filter/issues/240
      - id: previous-sha
        run: 'echo "sha=$(git rev-parse HEAD^1)" >> $GITHUB_OUTPUT'

      - uses: dorny/paths-filter@v3
        id: filter
        with:
          base: "${{ steps.previous-sha.outputs.sha }}"
          filters: |
            matches:
              - 'frontend/xliff/**'
              - '.github/workflows/weblate-reformat.yaml'

  reformat:
    needs: paths-filter
    if: needs.paths-filter.outputs.matches == 'true'
    runs-on: ubuntu-latest
    permissions:
      # Give the default GITHUB_TOKEN write permission to commit and push the
      # added or changed files to the repository.
      contents: write

    steps:
      # Setup:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          repository: ${{ github.event.pull_request.head.repo.full_name }}
          ref: ${{ github.head_ref }}

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: '22'
          cache: 'yarn'
          cache-dependency-path: frontend/yarn.lock
      - name: Install dependencies
        working-directory: frontend
        env:
          HUSKY: 0
        run: yarn install --frozen-lockfile

      # Localize:
      - name: Reformat XLIFF files
        working-directory: frontend
        run: yarn localize:extract

      - name: Rebuild frontend templates
        working-directory: frontend
        run: yarn localize:build

      - name: Commit changes to upstream branch
        uses: stefanzweifel/git-auto-commit-action@v5
        with:
          commit_message: Format Weblate Changes
          file_pattern: '**/*.xlf **/__generated__/locales/*.ts'
          skip_fetch: true
          skip_checkout: true