import {BASE_URL, createRequestConfig, handleResponse} from "./BaseApi.ts";

interface IAuthData{
    email: string;
    password: string;
}

interface IRegistrationData extends IAuthData{
    username: string;
    firstName: string;
    lastName: string;
}
//
// interface IUserData{
//     username: string;
//     firstName: string;
//     lastName: string;
//     email: string;
// }

export const getCurrentUser = async (): Promise<IRegistrationData> => {
    const token = localStorage.getItem("token");
    if (!token) {
        throw new Error("Токен отсутствует");
    }

    try {
        const response = await fetch(`${BASE_URL}/auth/me`, {
            ...createRequestConfig('GET'),
            headers: {
                'Authorization': `Bearer ${token}`
            }
        });

        if (response.status === 401) {
            localStorage.removeItem("token");
            throw new Error("Сессия истекла. Пожалуйста, войдите снова.");
        }

        if (!response.ok) {
            throw new Error(`Ошибка сервера: ${response.status}`);
        }

        const userData = await handleResponse(response);
        localStorage.setItem("user", JSON.stringify(userData));
        return userData;
    } catch (error) {
        console.error("Ошибка при получении данных пользователя:", error);
        throw error;
    }
};

export const registerUser = async (data: IRegistrationData) => {
    try{
        const response = await fetch(`${BASE_URL}/auth/register`, {
            ...createRequestConfig('POST'), body: JSON.stringify(data),
        })
        const responseData = await handleResponse(response);

        if (responseData.accessToken) {
            localStorage.setItem("token", responseData.accessToken);
            localStorage.setItem("user", JSON.stringify({
                firstName: data.firstName,
                lastName: data.lastName
            }));
        }

        return responseData;
    } catch (error){
        console.error("Registration error:", error);
        throw error;
    }
}

export const authUser = async (data: IAuthData) => {
    try {
        const response = await fetch(`${BASE_URL}/auth/login`, {
            ...createRequestConfig('POST'),
            body: JSON.stringify(data),
        });
        const responseData = await handleResponse(response);

        const token = responseData.accessToken || responseData.token;
        if (token) {
            localStorage.setItem("token", token);
            const user = localStorage.getItem("user");
            if (!responseData.user && user) {
                responseData.user = JSON.parse(user);
            }

            if (responseData.user) {
                localStorage.setItem("user", JSON.stringify(responseData.user));
            }
        }

        return responseData;
    } catch (error) {
        console.error("Login error:", error);
        throw error;
    }
};