name: Trigger i18n Sync on Push

# This workflow bridges the push event to repository_dispatch
# because claude-code-action doesn't support push events directly.
# See: https://github.com/langgenius/dify/issues/30743

on:
  push:
    branches: [main]
    paths:
      - 'web/i18n/en-US/*.json'

permissions:
  contents: write

jobs:
  trigger:
    if: github.repository == 'langgenius/dify'
    runs-on: ubuntu-latest
    timeout-minutes: 5

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Detect changed files and generate diff
        id: detect
        run: |
          BEFORE_SHA="${{ github.event.before }}"
          # Handle edge case: force push may have null/zero SHA
          if [ -z "$BEFORE_SHA" ] || [ "$BEFORE_SHA" = "0000000000000000000000000000000000000000" ]; then
            BEFORE_SHA="HEAD~1"
          fi

          # Detect changed i18n files
          changed=$(git diff --name-only "$BEFORE_SHA" "${{ github.sha }}" -- 'web/i18n/en-US/*.json' 2>/dev/null | xargs -n1 basename 2>/dev/null | sed 's/.json$//' | tr '\n' ' ' || echo "")
          echo "changed_files=$changed" >> $GITHUB_OUTPUT

          # Generate diff for context
          git diff "$BEFORE_SHA" "${{ github.sha }}" -- 'web/i18n/en-US/*.json' > /tmp/i18n-diff.txt 2>/dev/null || echo "" > /tmp/i18n-diff.txt

          # Truncate if too large (keep first 50KB to match receiving workflow)
          head -c 50000 /tmp/i18n-diff.txt > /tmp/i18n-diff-truncated.txt
          mv /tmp/i18n-diff-truncated.txt /tmp/i18n-diff.txt

          # Base64 encode the diff for safe JSON transport (portable, single-line)
          diff_base64=$(base64 < /tmp/i18n-diff.txt | tr -d '\n')
          echo "diff_base64=$diff_base64" >> $GITHUB_OUTPUT

          if [ -n "$changed" ]; then
            echo "has_changes=true" >> $GITHUB_OUTPUT
            echo "Detected changed files: $changed"
          else
            echo "has_changes=false" >> $GITHUB_OUTPUT
            echo "No i18n changes detected"
          fi

      - name: Trigger i18n sync workflow
        if: steps.detect.outputs.has_changes == 'true'
        uses: peter-evans/repository-dispatch@v3
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          event-type: i18n-sync
          client-payload: '{"changed_files": "${{ steps.detect.outputs.changed_files }}", "diff_base64": "${{ steps.detect.outputs.diff_base64 }}", "sync_mode": "incremental", "trigger_sha": "${{ github.sha }}"}'