import { getTokenFromLocalStorage } from "@config/token";
import { ApiError } from "@models/Server.Error.model";
import axios from "@config/axios.config";

class ApiService {
    private normalizeError(error: unknown): ApiError {
        if (error && typeof error === "object" && "response" in error) {
            const response = (error as { response?: { data?: any; status?: number } }).response;
            const data = response?.data;

            if (data) {
                const msg = data.desc || data.message || JSON.stringify(data.details || data) || "No pudimos completar la operación.";
                return new ApiError(data.code || response?.status || 500, msg);
            }

            return new ApiError(response?.status || 500, "No pudimos comunicarnos con el servidor.");
        }

        if (error instanceof Error) {
            return new ApiError(500, error.message);
        }

        return new ApiError(500, "No pudimos comunicarnos con el servidor.");
    }

    /**
     * Sends a HTTP POST request to the specified endpoint with the provided data
     * and returns a promise that resolves to the response data.
     *
     * @param {string} endpoint - The URL or path of the API endpoint to send the request to.
     * @param {object} data - The data to be sent with the request.
     * @return {Promise<T>} A promise that resolves to the response data of type T.
     */
    post<T>(endpoint: string, data: object): Promise<T> {
        return new Promise<T>((resolve, reject) => {
            axios()
                .post<T>(endpoint, data)
                .then((response) => {
                    resolve(response.data);
                })
                .catch((error) => {
                    reject(this.normalizeError(error));
                });
        });
    }

    postFile<T>(endpoint: string, data: FormData): Promise<T> {
        return new Promise<T>((resolve, reject) => {
            axios()
                .post<T>(endpoint, data, {
                    headers: {
                        "content-type": "multipart/form-data",
                        Authorization: getTokenFromLocalStorage(),
                    },
                })
                .then((response) => {
                    resolve(response.data);
                })
                .catch((error) => {
                    reject(this.normalizeError(error));
                });
        });
    }
}

const API = new ApiService();

export default API;