name: PR Summary and Code Review

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

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

jobs:
  pr_summary:
    runs-on: ubuntu-latest
    steps:
      # Checkout repository
      - name: Checkout Code
        uses: actions/checkout@v3

      # Set up Python for PR summaries
      - name: Set Up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.9'

      # Install Python dependencies
      - name: Install Python Dependencies
        run: |
          python -m pip install --upgrade pip
          pip install requests

      # Run AI Analysis (PR Summary Only)
      - name: Generate PR Summary
        env:
          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
          GITHUB_TOKEN: ${{ secrets.G_TOKEN }}
        run: |
          python - <<EOF
          import os
          import requests
          import json

          # Gather GitHub event details
          event_path = os.environ.get('GITHUB_EVENT_PATH')
          with open(event_path, 'r') as f:
              event = json.load(f)

          # Extract PR and repo details
          pr_number = event['pull_request']['number']
          repo_full_name = event['repository']['full_name']
          token = os.environ.get('GITHUB_TOKEN')
          openai_key = os.environ.get('OPENAI_API_KEY')

          # Get PR diff
          headers = {
              'Authorization': f'token {token}',
              'Accept': 'application/vnd.github.v3.diff',
          }
          diff_url = event['pull_request']['url'] + "/files"
          pr_files = requests.get(diff_url, headers=headers).json()

          diff_text = ""
          for fdata in pr_files:
              filename = fdata['filename']
              patch = fdata.get('patch', '')
              diff_text += f"File: {filename}\\nPatch:\\n{patch}\\n\\n"

          # Generate PR summary using OpenAI
          summary_prompt = f"Summarize the following pull request changes in a concise, technical manner:\\n\\n{diff_text}"
          ai_headers = {"Content-Type": "application/json", "Authorization": f"Bearer {openai_key}"}
          data_summary = {
              "model": "gpt-4o-mini",
              "messages": [{"role": "user", "content": summary_prompt}],
              "temperature": 0.7
          }
          summary_response = requests.post("https://api.openai.com/v1/chat/completions", headers=ai_headers, json=data_summary)
          summary_response.raise_for_status()
          summary = summary_response.json()['choices'][0]['message']['content'].strip()

          # Post AI Pull Request Summary
          comment_url = f"https://api.github.com/repos/{repo_full_name}/issues/{pr_number}/comments"
          summary_comment = {
              "body": f"**AI Pull Request Summary:**\\n{summary}"
          }
          summary_comment_response = requests.post(comment_url, headers={'Authorization': f'token {token}', 'Accept': 'application/vnd.github.v3+json'}, json=summary_comment)
          summary_comment_response.raise_for_status()

          print("PR Summary posted successfully.")
          EOF

  code_review:
    runs-on: ubuntu-latest
    steps:
      # Checkout repository
      - name: Checkout Repository
        uses: actions/checkout@v4

      # Run GPT Code Reviewer (handles all code review tasks)
      - name: Run GPT Code Reviewer
        uses: PierreGode/GPTcode-reviewer@main
        with:
          GITHUB_TOKEN: ${{ secrets.G_TOKEN }}
          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
          OPENAI_API_MODEL: "gpt-4o-mini"
          exclude: "**/*.json, **/*.md"