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enum HTTPMethod: String {
case GET
case POST
}
class NetworkService {
func get(scheme: String? = nil,
host: String,
path: String,
parameters: [String: Any]?,
completion: @escaping ([String: Any]?, HTTPURLResponse?, Error?) -> Void) {
guard let urlRequest = request(scheme: scheme,
host: host,
path: path,
parameters: parameters) else {
return
}
service(urlRequest: urlRequest, completion: completion)
}
func post(scheme: String? = nil,
host: String,
path: String,
parameters: [String: Any]?,
completion: @escaping ([String: Any]?, HTTPURLResponse?, Error?) -> Void) {
guard let urlRequest = request(scheme: scheme,
host: host,
path: path,
parameters: parameters,
httpMethod: HTTPMethod.POST.rawValue) else {
return
}
service(urlRequest: urlRequest, completion: completion)
}
private func service(urlRequest: URLRequest,
completion: @escaping ([String: Any]?, HTTPURLResponse?, Error?) -> Void) {
let configuration = URLSessionConfiguration.`default`
configuration.protocolClasses?.append(URLRouter.self)
let session = URLSession(configuration: configuration)
session.dataTask(with: urlRequest) { (data, urlResponse, error) in
var responseBody: [String: Any]? = nil
if let data = data {
do {
responseBody = try JSONSerialization.jsonObject(with: data) as? [String: Any]
} catch {
responseBody = nil
}
}
completion(responseBody, urlResponse as? HTTPURLResponse, error)
}.resume()
}
private func request(scheme: String? = nil,
host: String,
path: String,
parameters: [String: Any]?,
httpMethod: String? = HTTPMethod.GET.rawValue) -> URLRequest? {
var components = URLComponents()
components.scheme = scheme ?? "http"
components.host = host
components.path = path
if let parameters = parameters {
components.queryItems = parameters.compactMap { URLQueryItem(name: $0.key, value: String(describing: $0.value)) }
}
guard let requestUrl = components.url else {
return nil
}
var urlRequest = URLRequest(url: requestUrl)
urlRequest.httpMethod = httpMethod
return urlRequest
}
}
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