name: Check Duplicate Issues

on:
  issues:
    types: [opened]

jobs:
  check-duplicates:
    if: github.event.action == 'opened'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      issues: write
    steps:
      - name: Install Claude Code
        run: npm install -g @anthropic-ai/claude-code

      - name: Check duplicates
        env:
          ANTHROPIC_API_KEY: ${{ secrets.LITELLM_VIRTUAL_KEY }}
          ANTHROPIC_BASE_URL: ${{ secrets.LITELLM_BASE_URL }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PROMPT: |
            A new issue has been created in the ${{ github.repository }} repository.

            Issue number: ${{ github.event.issue.number }}

            Lookup this issue with gh issue view ${{ github.event.issue.number }} --repo ${{ github.repository }}.

            Search through existing issues (excluding #${{ github.event.issue.number }}) to find potential duplicates.

            Use gh issue list --repo ${{ github.repository }} with relevant search terms from the new issue's title and description. Try multiple keyword combinations to search broadly. Check both open and recently closed issues.

            Consider:
            1. Similar titles or descriptions
            2. Same error messages or symptoms
            3. Related functionality or components
            4. Similar feature requests

            If you find potential duplicates, post a SINGLE comment on issue #${{ github.event.issue.number }} using gh issue comment ${{ github.event.issue.number }} --repo ${{ github.repository }} with this format:

            _This comment was generated by an LLM and may be inaccurate._

            This issue might be a duplicate of existing issues. Please check:
            - #[issue_number]: [brief description of similarity]

            If you find NO duplicates, do NOT post any comment. Stay silent.
        run: claude -p "$PROMPT" --model sonnet --max-turns 10 --allowedTools "Bash(gh issue *)"