name: Duplicate PR Check

on:
  pull_request_target:
    types: [opened]

jobs:
  check-duplicates:
    if: |
      github.event.pull_request.user.login != 'actions-user' &&
      github.event.pull_request.user.login != 'opencode' &&
      github.event.pull_request.user.login != 'rekram1-node' &&
      github.event.pull_request.user.login != 'thdxr' &&
      github.event.pull_request.user.login != 'kommander' &&
      github.event.pull_request.user.login != 'jayair' &&
      github.event.pull_request.user.login != 'fwang' &&
      github.event.pull_request.user.login != 'adamdotdevin' &&
      github.event.pull_request.user.login != 'iamdavidhill' &&
      github.event.pull_request.user.login != 'opencode-agent[bot]'
    runs-on: blacksmith-4vcpu-ubuntu-2404
    permissions:
      contents: read
      pull-requests: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Setup Bun
        uses: ./.github/actions/setup-bun

      - name: Install dependencies
        run: bun install

      - name: Install opencode
        run: curl -fsSL https://opencode.ai/install | bash

      - name: Build prompt
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
        run: |
          {
            echo "Check for duplicate PRs related to this new PR:"
            echo ""
            echo "CURRENT_PR_NUMBER: $PR_NUMBER"
            echo ""
            echo "Title: $(gh pr view "$PR_NUMBER" --json title --jq .title)"
            echo ""
            echo "Description:"
            gh pr view "$PR_NUMBER" --json body --jq .body
          } > pr_info.txt

      - name: Check for duplicate PRs
        env:
          OPENCODE_API_KEY: ${{ secrets.OPENCODE_API_KEY }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
        run: |
          COMMENT=$(bun script/duplicate-pr.ts -f pr_info.txt "Check the attached file for PR details and search for duplicates")

          gh pr comment "$PR_NUMBER" --body "_The following comment was made by an LLM, it may be inaccurate:_

          $COMMENT"
