name: Lock closed issues

on:
  schedule:
    - cron: "0 0 * * *"  # Run daily at midnight
  workflow_dispatch:

permissions:
  issues: write
  pull-requests: write

jobs:
  lock:
    runs-on: ubuntu-latest
    steps:
      - name: Lock old issues and PRs
        uses: actions/github-script@v7
        with:
          script: |
            const daysBeforeLock = 3;
            const cutoffDate = new Date('2026-01-27T00:00:00Z');
            const lockDate = new Date();
            lockDate.setDate(lockDate.getDate() - daysBeforeLock);
            
            // Exclude patterns (case-insensitive)
            const excludePatterns = [
              /automated pr/i,
              /\[bot\]/i,
              /dependabot/i
            ];
            
            // Search for closed, unlocked issues older than 3 days
            const issues = await github.rest.search.issuesAndPullRequests({
              q: `repo:${context.repo.owner}/${context.repo.repo} is:closed is:unlocked updated:<${lockDate.toISOString().split('T')[0]}`,
              per_page: 50
            });
            
            console.log(`Found ${issues.data.items.length} issues/PRs to process`);
            
            for (const item of issues.data.items) {
              // Skip excluded items
              const shouldExclude = excludePatterns.some(pattern => pattern.test(item.title));
              if (shouldExclude) {
                console.log(`Skipped #${item.number}: "${item.title}" (matches exclude pattern)`);
                continue;
              }
              
              const createdAt = new Date(item.created_at);
              const isNew = createdAt >= cutoffDate;
              
              try {
                // Add comment only for new issues (created after 2026-01-27)
                if (isNew) {
                  const comment = item.pull_request
                    ? 'This pull request has been automatically locked. Please open a new issue for related bugs.'
                    : 'This issue has been automatically locked. Please open a new issue for related bugs and reference this issue if needed.';
                  
                  await github.rest.issues.createComment({
                    ...context.repo,
                    issue_number: item.number,
                    body: comment
                  });
                }
                
                // Lock the issue/PR
                await github.rest.issues.lock({
                  ...context.repo,
                  issue_number: item.number,
                  lock_reason: 'resolved'
                });
                
                console.log(`Locked #${item.number} (${item.pull_request ? 'PR' : 'Issue'})`);
              } catch (error) {
                console.log(`Failed to lock #${item.number}: ${error.message}`);
              }
            }