# Workflow for cleaning up sync PRs when original PR is closed
name: Cleanup Sync PR

on:
  pull_request:
    branches: [main, revamp]
    types: [closed]

permissions:
  contents: read
  pull-requests: write

jobs:
  cleanup-sync-pr:
    runs-on: ubuntu-latest
    # Skip if this IS a sync PR (don't want infinite loops)
    if: "!startsWith(github.event.pull_request.head.ref, 'docs-sync-pr-')"
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Check if PR has English docs changes
        id: check-english
        run: |
          # Quick check if this PR touched source language docs
          PR_NUMBER=${{ github.event.pull_request.number }}

          # Get source language directory from config.json (single source of truth)
          SOURCE_DIR=$(python3 -c "import json; config = json.load(open('tools/translate/config.json')); print(config['languages'][config['source_language']]['directory'])")

          # Get list of changed files
          CHANGED_FILES=$(gh pr view $PR_NUMBER --json files --jq '.files[].path')

          # Check if any source language docs were changed
          if echo "$CHANGED_FILES" | grep -qE "^(docs\.json|${SOURCE_DIR}/.*\.(md|mdx))$"; then
            echo "has_english_changes=true" >> $GITHUB_OUTPUT
            echo "✅ PR has ${SOURCE_DIR}/ docs changes - checking for sync PR"
          else
            echo "has_english_changes=false" >> $GITHUB_OUTPUT
            echo "ℹ️ No ${SOURCE_DIR}/ docs changes - skipping"
          fi
        env:
          GH_TOKEN: ${{ github.token }}

      - name: Find and close sync PR
        if: steps.check-english.outputs.has_english_changes == 'true'
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          PR_NUMBER=${{ github.event.pull_request.number }}
          PR_MERGED=${{ github.event.pull_request.merged }}
          SYNC_BRANCH="docs-sync-pr-${PR_NUMBER}"

          echo "Looking for sync PR with branch: $SYNC_BRANCH"

          # Search for sync PR
          SYNC_PR_DATA=$(gh pr list \
            --search "head:${SYNC_BRANCH}" \
            --json number,state \
            --jq '.[0] // empty' 2>/dev/null || echo "")

          if [ -z "$SYNC_PR_DATA" ] || [ "$SYNC_PR_DATA" = "null" ]; then
            echo "ℹ️ No sync PR found for PR #${PR_NUMBER}"
            exit 0
          fi

          SYNC_PR_NUMBER=$(echo "$SYNC_PR_DATA" | jq -r '.number')
          SYNC_PR_STATE=$(echo "$SYNC_PR_DATA" | jq -r '.state')

          if [ "$SYNC_PR_STATE" != "OPEN" ]; then
            echo "ℹ️ Sync PR #${SYNC_PR_NUMBER} is already ${SYNC_PR_STATE}"
            exit 0
          fi

          echo "Found open sync PR #${SYNC_PR_NUMBER}"

          # Handle sync PR based on original PR status
          if [ "$PR_MERGED" = "true" ]; then
            # Original PR was merged - leave sync PR open for independent merging
            echo "ℹ️ Original PR #${PR_NUMBER} was merged. Leaving sync PR #${SYNC_PR_NUMBER} open for independent review."
          else
            # Original PR was closed without merging - close sync PR
            gh pr close ${SYNC_PR_NUMBER} --comment "❌ Original PR #${PR_NUMBER} was closed without merging. Closing this sync PR. If the original PR reopens, sync will resume automatically."
            echo "✅ Closed sync PR #${SYNC_PR_NUMBER}"
          fi