name: Upstream Source Locale Sync

on:
  # Run daily to pick up new source strings from uutils/coreutils
  schedule:
    - cron: '0 3 * * *'

  # Allow manual triggering
  workflow_dispatch:

jobs:
  sync-upstream-sources:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout repository
      uses: actions/checkout@v6
      with:
        token: ${{ secrets.WEBLATE_TOKEN || github.token }}
        fetch-depth: 0

    - name: Clone upstream uutils/coreutils
      run: |
        git clone --depth 1 https://github.com/uutils/coreutils.git /tmp/upstream-coreutils

    - name: Sync en-US and fr-FR source locales
      run: |
        set -e

        # Copy en-US.ftl and fr-FR.ftl from upstream for every utility/uucore
        # dir that exists in both repos. Directories that only exist upstream
        # (e.g. b2sum, md5sum, sha*sum, checksum_common — unified as hashsum
        # here) or only here (e.g. vdir) are skipped.
        changed=0
        for locale in en-US.ftl fr-FR.ftl; do
          while IFS= read -r src; do
            rel="${src#/tmp/upstream-coreutils/}"
            dst="$rel"
            if [ -f "$dst" ] && ! cmp -s "$src" "$dst"; then
              cp "$src" "$dst"
              echo "Updated: $dst"
              changed=$((changed + 1))
            fi
          done < <(find /tmp/upstream-coreutils/src/uu/*/locales /tmp/upstream-coreutils/src/uucore/locales -name "$locale" -type f 2>/dev/null)
        done
        echo "Source locale files updated: $changed"

    - name: Commit and push
      run: |
        git config --local user.email "action@github.com"
        git config --local user.name "GitHub Action"

        if [ -n "$(git status --porcelain)" ]; then
          find src/uu/*/locales src/uucore/locales \
            \( -name 'en-US.ftl' -o -name 'fr-FR.ftl' \) -type f -print0 \
            | xargs -0 git add --
          git commit -m "Sync en-US/fr-FR source locales from upstream uutils/coreutils"
          # Pushing to main here will trigger weblate-sync.yml (on: push,
          # paths: en-US.ftl), which handles pushing sources to Weblate.
          git push
        else
          echo "No upstream source updates"
        fi