name: "Gemini AI PR Review"

on:
  pull_request:
    types: [opened, synchronize, reopened]

permissions:
  pull-requests: write
  contents: read

jobs:
  review:
    name: "Code Review"
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4

      - name: Gemini AI Review
        uses: petarzarkov/gemini-code-review-action@v1.0.4 # Pinned version for stability
        env:
          GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          model: gemini-2.5-flash-lite # Cheapest Gemini model - $0.10/1M input, $0.40/1M output
          # You can add custom prompt instructions here if needed:
          # prompt: "You are a senior software engineer. Review this PR..."