import sys from pathlib import Path sys.path.append(str(Path(__file__).parent.parent.parent)) import g4f import json import os import re import requests from typing import Union from github import Github from github.PullRequest import PullRequest g4f.debug.logging = True g4f.debug.version_check = False GITHUB_TOKEN = os.getenv('GITHUB_TOKEN') GITHUB_REPOSITORY = os.getenv('GITHUB_REPOSITORY') G4F_PROVIDER = os.getenv('G4F_PROVIDER') G4F_MODEL = os.getenv('G4F_MODEL') or g4f.models.gpt_4 def get_pr_details(github: Github) -> PullRequest: """ Retrieves the details of the pull request from GitHub. Args: github (Github): The Github object to interact with the GitHub API. Returns: PullRequest: An object representing the pull request. """ with open('./pr_number', 'r') as file: pr_number = file.read().strip() if not pr_number: return repo = github.get_repo(GITHUB_REPOSITORY) pull = repo.get_pull(int(pr_number)) return pull def get_diff(diff_url: str) -> str: """ Fetches the diff of the pull request from a given URL. Args: diff_url (str): URL to the pull request diff. Returns: str: The diff of the pull request. """ response = requests.get(diff_url) response.raise_for_status() return response.text def read_json(text: str) -> dict: """ Parses JSON code block from a string. Args: text (str): A string containing a JSON code block. Returns: dict: A dictionary parsed from the JSON code block. """ match = re.search(r"```(json|)\n(?P[\S\s]+?)\n```", text) if match: text = match.group("code") try: return json.loads(text.strip()) except json.JSONDecodeError: print("No valid json:", text) return {} def read_text(text: str) -> str: """ Extracts text from a markdown code block. Args: text (str): A string containing a markdown code block. Returns: str: The extracted text. """ match = re.search(r"```(markdown|)\n(?P[\S\s]+?)\n```", text) if match: return match.group("text") return text def get_ai_response(prompt: str, as_json: bool = True) -> Union[dict, str]: """ Gets a response from g4f API based on the prompt. Args: prompt (str): The prompt to send to g4f. as_json (bool): Whether to parse the response as JSON. Returns: Union[dict, str]: The parsed response from g4f, either as a dictionary or a string. """ response = g4f.ChatCompletion.create( G4F_MODEL, [{'role': 'user', 'content': prompt}], G4F_PROVIDER, ignore_stream_and_auth=True ) return read_json(response) if as_json else read_text(response) def analyze_code(pull: PullRequest, diff: str)-> list[dict]: """ Analyzes the code changes in the pull request. Args: pull (PullRequest): The pull request object. diff (str): The diff of the pull request. Returns: list[dict]: A list of comments generated by the analysis. """ comments = [] changed_lines = [] current_file_path = None offset_line = 0 for line in diff.split('\n'): if line.startswith('+++ b/'): current_file_path = line[6:] elif line.startswith('@@'): match = re.search(r'\+([0-9]+?),', line) if match: offset_line = int(match.group(1)) elif current_file_path: if (line.startswith('\\') or line.startswith('diff')) and changed_lines: prompt = create_analyze_prompt(changed_lines, pull, current_file_path) response = get_ai_response(prompt) for review in response.get('reviews', []): review['path'] = current_file_path comments.append(review) changed_lines = [] current_file_path = None elif not line.startswith('-'): changed_lines.append(f"{offset_line}:{line}") offset_line += 1 return comments def create_analyze_prompt(changed_lines: list[str], pull: PullRequest, file_path: str): """ Creates a prompt for the g4f model. Args: changed_lines (list[str]): The lines of code that have changed. pull (PullRequest): The pull request object. file_path (str): The path to the file being reviewed. Returns: str: The generated prompt. """ code = "\n".join(changed_lines) example = '{"reviews": [{"line": , "body": ""}]}' return f"""Your task is to review pull requests. Instructions: - Provide the response in following JSON format: {example} - Do not give positive comments or compliments. - Provide comments and suggestions ONLY if there is something to improve, otherwise "reviews" should be an empty array. - Write the comment in GitHub Markdown format. - Use the given description only for the overall context and only comment the code. - IMPORTANT: NEVER suggest adding comments to the code. Review the following code diff in the file "{file_path}" and take the pull request title and description into account when writing the response. Pull request title: {pull.title} Pull request description: --- {pull.body} --- Each line is prefixed by its number. Code to review: ``` {code} ``` """ def create_review_prompt(pull: PullRequest, diff: str): """ Creates a prompt to create a review comment. Args: pull (PullRequest): The pull request object. diff (str): The diff of the pull request. Returns: str: The generated prompt for review. """ return f"""Your task is to review a pull request. Instructions: - Write in name of g4f copilot. Don't use placeholder. - Write the review in GitHub Markdown format. - Thank the author for contributing to the project. Pull request author: {pull.user.name} Pull request title: {pull.title} Pull request description: --- {pull.body} --- Diff: ```diff {diff} ``` """ def main(): try: github = Github(GITHUB_TOKEN) pull = get_pr_details(github) if not pull: print(f"No PR number found") exit() if pull.get_reviews().totalCount > 0 or pull.get_comments().totalCount > 0: print(f"Has already a review") exit() diff = get_diff(pull.diff_url) except Exception as e: print(f"Error get details: {e.__class__.__name__}: {e}") exit(1) try: review = get_ai_response(create_review_prompt(pull, diff), False) except Exception as e: print(f"Error create review: {e}") exit(1) try: comments = analyze_code(pull, diff) except Exception as e: print(f"Error analyze: {e}") exit(1) print("Comments:", comments) try: if comments: pull.create_review(body=review, comments=comments) else: pull.create_comment(body=review) except Exception as e: print(f"Error posting review: {e}") exit(1) if __name__ == "__main__": main()