aider-gitea/aider_gitea/__main__.py

#!/usr/bin/env python3
"""
This script downloads issues from a given Gitea repository and produces a pull request for each issue.
It assumes that the default branch (default "main") exists and that you have a valid API token if authentication is required.
"""

import logging
from pathlib import Path
import argparse
import requests
import sys
import dataclasses
import tempfile
import subprocess
import os

import re

from . import secrets

def generate_branch_name(issue_title: str) -> str:
    """
    Create a branch name by sanitizing the issue title.
    Non-alphanumeric characters (except spaces) are removed,
    the text is lowercased, and spaces are replaced with dashes.
    """
    sanitized = re.sub(r"[^0-9a-zA-Z ]+", "", issue_title)
    return "issue-" + "-".join(sanitized.lower().split())

logger = logging.getLogger(__name__)

AIDER_TEST="pytest test"
AIDER_LINT="ruff format; ruff check --fix --ignore RUF022 --ignore PGH004; ruff format; ruff check --ignore RUF022 --ignore PGH004;"

MODEL = 'o3-mini'

def create_aider_command(issue: str) -> list[str]:
    return [
        'aider',
          '--model', MODEL,
          '--chat-language',  'english',
          '--test-cmd', AIDER_TEST,
          '--lint-cmd', AIDER_LINT,
          '--auto-test',
          '--no-auto-lint',
          '--api-key', secrets.llm_api_key(),
          '--read', 'CONVENTIONS.md',
          '--message', "First, write unit tests that validate your changes. Then, solve the issue. Issue details:\n" + issue,
          '--yes-always',
          '--architect',
    ]

class GiteaClient:

    def __init__(self, gitea_url: str, token: str) -> None:
        assert not gitea_url.endswith('/api/v1')
        self.gitea_url = gitea_url + '/api/v1'
        self.session = requests.Session()
        self.session.headers["Content-Type"] = "application/json"
        if token:
            self.session.headers["Authorization"] = f"token {token}"

    def get_default_branch_sha(self, owner, repo, branch):
        """Retrieve the commit SHA of the default branch."""
        url = f"{self.gitea_url}/repos/{owner}/{repo}/branches/{branch}"
        response = self.session.get(url)
        response.raise_for_status()
        data = response.json()
        return data['commit']['sha']

    def create_branch(self, owner, repo, new_branch, sha):
        """Create a new branch from the provided SHA."""
        url = f"{self.gitea_url}/repos/{owner}/{repo}/git/refs"
        json_data = {"ref": f"refs/heads/{new_branch}", "sha": sha}
        response = self.session.post(url,  json=json_data)
        if response.status_code == 422:
            logger.warning(f"Branch {new_branch} already exists.")
            return False
        response.raise_for_status()
        return True

    def get_issues(self, owner, repo):
        """Download issues from the specified repository and filter those with the aider label."""
        url = f"{self.gitea_url}/repos/{owner}/{repo}/issues"
        response = self.session.get(url)
        response.raise_for_status()
        issues = response.json()
        # Filter to only include issues marked with the "aider" label.
        issues = [
            issue for issue in issues
            if any(label.get("name") == "aider" for label in issue.get("labels", []))
        ]
        return issues

    def create_pull_request(self, owner, repo, title, head, base, body):
        """Create a pull request for the given branch."""
        url = f"{self.gitea_url}/repos/{owner}/{repo}/pulls"
        json_data = {"title": title, "head": head, "base": base, "body": body}
        response = self.session.post(url, json=json_data)
        response.raise_for_status()
        return response.json()

def parse_args():
    parser = argparse.ArgumentParser(description="Download issues and create pull requests for a Gitea repository.")
    parser.add_argument("--gitea-url", required=True, help="Base URL for the Gitea instance, e.g., https://gitfub.space/api/v1")
    parser.add_argument("--owner", required=True, help="Owner of the repository")
    parser.add_argument("--repo", required=True, help="Repository name")
    parser.add_argument("--base-branch", default="main", help="Base branch to use for new branches (default: main)")
    return parser.parse_args()

def push_changes(branch_name: str, issue_title: str, issue_description: str, base_branch: str) -> None:
    cmd = [
        "git",
        "push",
        "origin",
        f"HEAD:refs/for/{base_branch}",
        "-o",
        f"topic={branch_name}",
        "-o",
        f"title={issue_title}",
        "-o",
        f"description={issue_description}"
    ]
    run_cmd(cmd)

def run_cmd(cmd: list[str], cwd:Path|None=None) -> None:
    print(cmd)
    subprocess.run(cmd, check=True, cwd=cwd)


def process_issue(args, tmpdirname: Path, branch_name: str, issue_title: str, issue_description: str, issue_number: str):
    repo_url = f"{args.gitea_url}:{args.owner}/{args.repo}.git".replace('https://', 'git@')
    run_cmd(["git", "clone", repo_url, tmpdirname])
    run_cmd(["git", "checkout", args.base_branch], tmpdirname)
    run_cmd(["git", "checkout", "-b", branch_name], tmpdirname)
    run_cmd(create_aider_command(f'# {issue_title}\n{issue_description}'), tmpdirname)
    run_cmd(["git", "add", "."], tmpdirname)
    push_changes(branch_name, issue_title, issue_description, args.base_branch)

def main():
    logging.basicConfig(level='INFO')
    args = parse_args()

    client = GiteaClient(args.gitea_url, secrets.gitea_token())

    try:
        issues = client.get_issues(args.owner, args.repo)
    except Exception:
        logger.exception('Failed to retrieve issues')
        sys.exit(1)

    if not issues:
        logger.info("No issues found.")
        return

    for issue in issues:
        issue_number = issue.get("number")
        issue_description = issue.get("body", "")
        title = issue.get("title", f"Issue {issue_number}")
        branch_name = generate_branch_name(title)
        try:
            with tempfile.TemporaryDirectory() as tmpdirname:
                process_issue(args, Path(tmpdirname), branch_name, title, issue_description, issue_number)
            logger.info(f"Created branch {branch_name} for issue {issue_number}.")
        except Exception:
            logger.exception('Error processing issue')
            sys.exit(1)

        body = f"This pull request resolves {issue.get('html_url', 'unknown')}"
        try:
            pr = client.create_pull_request(args.owner, args.repo, f"[Issue {issue_number}] {title}", branch_name, args.base_branch, body)
            logger.info(f"Created pull request: {pr.get('html_url', 'unknown')} for issue {issue_number}.")
        except Exception:
            logger.exception('"Error creating pull request for branch')
            sys.exit(1)

if __name__ == "__main__":
    main()