ai-assistant.yml

name: AI Assistant

on:
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
      - ready_for_review
  workflow_dispatch:

permissions:
  contents: read
  pull-requests: write
  issues: write

jobs:
  ai-pr-assistant:
    name: AI PR Assistant
    runs-on: ubuntu-latest
    if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
    steps:
      - uses: actions/checkout@v4

      - name: Generate AI PR note
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITHUB_REPOSITORY: ${{ github.repository }}
          GITHUB_API_URL: ${{ github.api_url }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
          OUTPUT_PATH: ${{ runner.temp }}/ai-pr-comment.md
          GITHUB_MODELS_MODEL: openai/gpt-4o-mini
        run: |
          python3 scripts/ai_pr_assistant.py

      - name: Upsert PR comment
        if: github.event_name == 'pull_request'
        continue-on-error: true
        uses: actions/github-script@v7
        env:
          COMMENT_PATH: ${{ runner.temp }}/ai-pr-comment.md
        with:
          script: |
            const fs = require("fs");
            const marker = "<!-- ai-pr-assistant -->";
            const body = fs.readFileSync(process.env.COMMENT_PATH, "utf8");
            const { owner, repo } = context.repo;
            const issue_number = context.payload.pull_request.number;

            const comments = await github.paginate(
              github.rest.issues.listComments,
              { owner, repo, issue_number, per_page: 100 }
            );

            const existing = comments.find(
              (c) => c.body && c.body.includes(marker)
            );

            if (existing) {
              await github.rest.issues.updateComment({
                owner,
                repo,
                comment_id: existing.id,
                body
              });
            } else {
              await github.rest.issues.createComment({
                owner,
                repo,
                issue_number,
                body
              });
            }