"""
Gitea 版本控制服務
"""
from typing import Optional, List, Dict, Any

import requests

from app.core.config import settings


class GiteaService:
    """Gitea API 服務"""

    def __init__(self):
        self.base_url = settings.GITEA_URL
        self.user = settings.GITEA_USER
        self.token = settings.GITEA_TOKEN
        self.headers = {
            "Authorization": f"token {self.token}",
            "Content-Type": "application/json",
        }

    def _request(
        self,
        method: str,
        endpoint: str,
        data: Optional[dict] = None,
    ) -> Dict[str, Any]:
        """
        發送 API 請求

        Args:
            method: HTTP 方法
            endpoint: API 端點
            data: 請求資料

        Returns:
            API 回應
        """
        url = f"{self.base_url}/api/v1{endpoint}"

        try:
            response = requests.request(
                method=method,
                url=url,
                headers=self.headers,
                json=data,
                timeout=30,
            )

            if response.status_code == 204:
                return {"success": True}

            return response.json()
        except Exception as e:
            return {"error": str(e)}

    def get_user(self) -> Dict[str, Any]:
        """取得當前使用者資訊"""
        return self._request("GET", "/user")

    def list_repos(self) -> List[Dict[str, Any]]:
        """列出使用者的所有 Repo"""
        return self._request("GET", f"/users/{self.user}/repos")

    def get_repo(self, repo_name: str) -> Dict[str, Any]:
        """
        取得 Repo 資訊

        Args:
            repo_name: Repo 名稱
        """
        return self._request("GET", f"/repos/{self.user}/{repo_name}")

    def create_repo(
        self,
        name: str,
        description: str = "",
        private: bool = False,
        auto_init: bool = True,
        default_branch: str = "main",
    ) -> Dict[str, Any]:
        """
        建立新的 Repo

        Args:
            name: Repo 名稱
            description: 描述
            private: 是否為私有
            auto_init: 是否自動初始化 (建立 README)
            default_branch: 預設分支名稱

        Returns:
            建立結果
        """
        data = {
            "name": name,
            "description": description,
            "private": private,
            "auto_init": auto_init,
            "default_branch": default_branch,
        }
        return self._request("POST", "/user/repos", data)

    def delete_repo(self, repo_name: str) -> Dict[str, Any]:
        """
        刪除 Repo

        Args:
            repo_name: Repo 名稱
        """
        return self._request("DELETE", f"/repos/{self.user}/{repo_name}")

    def create_file(
        self,
        repo_name: str,
        file_path: str,
        content: str,
        message: str = "Add file",
        branch: str = "main",
    ) -> Dict[str, Any]:
        """
        在 Repo 中建立檔案

        Args:
            repo_name: Repo 名稱
            file_path: 檔案路徑
            content: 檔案內容
            message: Commit 訊息
            branch: 分支名稱
        """
        import base64

        data = {
            "content": base64.b64encode(content.encode()).decode(),
            "message": message,
            "branch": branch,
        }
        return self._request(
            "POST", f"/repos/{self.user}/{repo_name}/contents/{file_path}", data
        )

    def get_file(self, repo_name: str, file_path: str) -> Dict[str, Any]:
        """
        取得檔案內容

        Args:
            repo_name: Repo 名稱
            file_path: 檔案路徑
        """
        return self._request(
            "GET", f"/repos/{self.user}/{repo_name}/contents/{file_path}"
        )

    def list_branches(self, repo_name: str) -> List[Dict[str, Any]]:
        """
        列出分支

        Args:
            repo_name: Repo 名稱
        """
        return self._request("GET", f"/repos/{self.user}/{repo_name}/branches")

    def list_commits(
        self, repo_name: str, branch: str = "main", limit: int = 10
    ) -> List[Dict[str, Any]]:
        """
        列出 Commits

        Args:
            repo_name: Repo 名稱
            branch: 分支名稱
            limit: 數量限制
        """
        return self._request(
            "GET", f"/repos/{self.user}/{repo_name}/commits?sha={branch}&limit={limit}"
        )


# 單例
gitea_service = GiteaService()


def create_kpi_management_repo() -> Dict[str, Any]:
    """
    建立 KPI Management Repo

    Returns:
        建立結果
    """
    result = gitea_service.create_repo(
        name="KPI-management",
        description="KPI 管理系統 - 員工績效考核管理平台",
        private=False,
        auto_init=True,
        default_branch="main",
    )
    return result