name: Lock closed issues

on:
  issues:
    types: [closed]
  pull_request:
    types: [closed]
  schedule:
    - cron: "0 0 * * *"  # Run daily at midnight for backlog
  workflow_dispatch:

permissions:
  issues: write
  pull-requests: write

concurrency:
  group: lock-threads

jobs:
  # Lock immediately when issue/PR is closed (new issues get comment)
  lock-on-close:
    if: github.event_name == 'issues' || github.event_name == 'pull_request'
    runs-on: ubuntu-latest
    steps:
      - name: Lock issue/PR after close
        uses: actions/github-script@v7
        with:
          script: |
            const createdAt = new Date(context.payload.issue?.created_at || context.payload.pull_request?.created_at);
            const cutoffDate = new Date('2026-01-27T00:00:00Z');
            const isNew = createdAt >= cutoffDate;
            const number = context.payload.issue?.number || context.payload.pull_request?.number;
            const isIssue = !!context.payload.issue;
            
            // Add comment only for new issues/PRs
            if (isNew) {
              const comment = isIssue
                ? 'This issue has been automatically locked. Please open a new issue for related bugs and reference this issue if needed.'
                : 'This pull request has been automatically locked. Please open a new issue for related bugs.';
              
              await github.rest.issues.createComment({
                ...context.repo,
                issue_number: number,
                body: comment
              });
            }
            
            // Lock the issue/PR
            await github.rest.issues.lock({
              ...context.repo,
              issue_number: number,
              lock_reason: 'resolved'
            });

  # Scheduled run for backlog (old issues without comment)
  lock-backlog:
    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    steps:
      - uses: dessant/lock-threads@v6
        with:
          github-token: ${{ github.token }}
          issue-inactive-days: 1
          issue-lock-reason: "resolved"
          issue-comment: ""
          pr-inactive-days: 1
          pr-lock-reason: "resolved"
          pr-comment: ""