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

export interface ISurvey {
    id: number;
    title: string;
    description: string;
    createdBy: number;
    createdAt: string;
}

export interface INewSurvey{
    title: string;
    description: string;
}

/**
 * getMySurveys - запрос на получение моих опросов
 */
export const getMySurveys = async (): Promise<ISurvey[]> => {
    const token = localStorage.getItem("token");
    if (!token) {
        throw new Error("Токен отсутствует");
    }

    try {
        const response = await fetch(`${BASE_URL}/surveys/my`, {
            ...createRequestConfig('GET'),
        });
        return await handleResponse(response);
    } catch (error) {
        handleUnauthorizedError(error);
        console.error("Error receiving surveys:", error);
        throw error;
    }
}

/**
 * getAllSurvey - запрос на получение всех опросов
 */
export const  getAllSurveys = async (): Promise<ISurvey[]> => {
    try{
        const response = await fetch(`${BASE_URL}/surveys`, {
            ...createRequestConfig('GET'),
        })
        return await handleResponse(response);
    } catch (error) {
        handleUnauthorizedError(error);
        console.error("Error receiving surveys:", error);
        throw error;
    }
}

/**
 * postNewSurvey - добавление нового опроса
 * @param survey
 */
export const postNewSurvey = async (survey: INewSurvey): Promise<ISurvey> => {
    const token = localStorage.getItem("token");
    if (!token) {
        throw new Error("Токен отсутствует");
    }

    try {
        const response = await fetch(`${BASE_URL}/surveys`, {
            ...createRequestConfig('POST'),
            body: JSON.stringify(survey),
        });

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

        const data = await handleResponse(response);
        if (!data.id) {
            throw new Error("Сервер не вернул ID опроса");
        }
        return data;
    } catch (error) {
        handleUnauthorizedError(error);
        console.error(`Error when adding a new survey: ${error}`);
        throw error;
    }
};

/**
 * Запрос на получение опроса по заданному ID
 * @param surveyId - ID опроса
 */
export const getSurveyById = async (surveyId: number): Promise<ISurvey> => {
    try{
        const response = await fetch(`${BASE_URL}/surveys/${surveyId}`, {
            ...createRequestConfig('GET'),
        })
        return await handleResponse(response);
    } catch (error){
        handleUnauthorizedError(error);
        console.error(`Error finding the survey by id: ${error}`);
        throw error;
    }
}

/**
 * Запрос на удаление опроса
 * @param surveyId - ID выбранного опроса
 */
export const deleteSurvey = async (surveyId: number) => {
    const token = localStorage.getItem("token");
    if (!token) {
        throw new Error("Токен отсутствует");
    }

    try{
        const response = await fetch(`${BASE_URL}/surveys/${surveyId}`, {
            ...createRequestConfig('DELETE'),
        })
        const responseData = await handleResponse(response);
        if (response.ok && !responseData){
            return  {success: true};
        }
        return responseData;
    } catch (error){
        handleUnauthorizedError(error);
        console.error(`Error deleting a survey: ${error}`);
        throw error;
    }
}

/**
 * Запрос на изменение опроса целиком
 * @param surveyId
 * @param survey
 */
export const updateSurvey = async (surveyId: number, survey: Partial<INewSurvey>): Promise<ISurvey> => {
    const token = localStorage.getItem("token");
    if (!token) {
        throw new Error('Токен отсутствует');
    }
    try{
        const response = await fetch(`${BASE_URL}/surveys/${surveyId}`, {
            ...createRequestConfig('PUT'),
            body: JSON.stringify({
                title: survey.title,
                description: survey.description,
            })
        })
        return await handleResponse(response);
    }
    catch (error){
        handleUnauthorizedError(error);
        console.error(`Error updating survey: ${error}`);
        throw error;
    }
}