Created
February 23, 2018 19:06
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import Foundation | |
final class BaseService<T: Decodable>: Service { | |
typealias ResultTypeValue = T | |
var responseHandler: HTTPResponseHandler<T>? = HTTPResponseHandler<T>() | |
var request: HTTPRequestRepresentable? | |
var successHandler: SuccessHandlerBlock? | |
var failureHandler: FailureHandlerBlock? | |
var noneHandler: (() -> ())? | |
var requestPreparator: RequestPreparator? = BaseRequestPreparator() | |
private var session: URLSession { | |
let session = URLSession(configuration: URLSessionConfiguration.default, delegate: nil, delegateQueue: nil) | |
return session | |
} | |
func sendRequest() -> BaseService<T>? { | |
guard var request = request else { | |
return nil | |
} | |
requestPreparator?.prepareRequest(&request) | |
guard let urlRequest = request.urlRequest() else { | |
return nil | |
} | |
session.dataTask(with: urlRequest) { [weak self] (data, response, error) in | |
let response = BaseResponse(data: data, response: response, error: error) | |
self?.responseHandler?.handleResponse(response, completion: { [weak self] (result) in | |
switch result { | |
case let .Value(model): | |
self?.processSuccess(model) | |
case let .Error(error): | |
self?.processError(error) | |
default: | |
self?.processNone() | |
break | |
} | |
}) | |
}.resume() | |
return self | |
} | |
func onSucces(_ success: @escaping SuccessHandlerBlock) -> BaseService<T> { | |
successHandler = success | |
return self | |
} | |
func onFailure(_ failure: @escaping FailureHandlerBlock) -> BaseService<T> { | |
failureHandler = failure | |
return self | |
} | |
func onNone(_ none: @escaping () -> ()) -> BaseService<T> { | |
noneHandler = none | |
return self | |
} | |
private func processSuccess(_ model: T) { | |
successHandler?(model) | |
successHandler = nil | |
} | |
private func processError(_ error: ErrorRepresentable) { | |
failureHandler?(error) | |
failureHandler = nil | |
} | |
private func processNone() { | |
noneHandler?() | |
noneHandler = nil | |
} | |
} |
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