//

// APIManager.swift

// SimpleVIPExample

//

// Created by Vishal_Malvi on 12/02/23.

//

import Foundation

typealias RequestResult<T> = (Result<T, CustomErrors>) -> Void

final class APIManager {

static let shared = APIManager()

private init() {}

static var sharedHeaders : HTTPHeaders {

["Content-Type": "application/json"]

}

func request<T: Codable>(modelType: T.Type, type: EndPoint, completion: @escaping RequestResult<T>) {

guard let url = type.url else {

completion(.failure(.invalidURL))

return

}

var request = URLRequest(url: url)

request.httpMethod = type.method.rawValue

request.allHTTPHeaderFields = type.headers

URLSession.shared.dataTask(with: request) { data, response, error in

guard let data, error == nil else {

completion(.failure(.invalidData))

return

}

guard let response = response as? HTTPURLResponse,

200 ... 299 ~= response.statusCode else {

completion(.failure(.invalidResponse))

return

}

do {

let model = try JSONDecoder().decode(modelType, from: data)

completion(.success(model))

}catch {

completion(.failure(.network(error)))

}

}.resume()

}

}