import requests
from config import GITEA_TOKEN, GITEA_SERVER_URL, GITEA_REPOSITORY, PR_NUMBER


def _headers():
    return {"Authorization": f"token {GITEA_TOKEN}", "Content-Type": "application/json"}


def _api(path: str) -> str:
    return f"{GITEA_SERVER_URL.rstrip('/')}/api/v1{path}"


def get_pr_diff() -> str:
    """取得 PR 的 git diff 內容"""
    url = _api(f"/repos/{GITEA_REPOSITORY}/pulls/{PR_NUMBER}.diff")
    resp = requests.get(url, headers=_headers(), timeout=60)
    resp.raise_for_status()
    return resp.text


def post_comment(body: str) -> dict:
    """在 PR 發布 comment"""
    url = _api(f"/repos/{GITEA_REPOSITORY}/issues/{PR_NUMBER}/comments")
    resp = requests.post(url, headers=_headers(), json={"body": body}, timeout=30)
    resp.raise_for_status()
    return resp.json()