GenericNetworkLayer

Table of Contents

1. Introduction
2. How to use
   • GenricNetworkLayer
3. Testing
4. Future Updates
5. Author

Introduction

This pacakge was created to give you a simple easey to use genric network layer to add to your project. And even if you want to build your own genric network layer this will give you a good start. Good Luck and enjoy 😉

How to use

Utilizing this API is designed to be straightforward and effortles. first thing you need to do is to create enum that conforms to EndPointProtocol like this one:

enum EndpointMock: EndPointProtocol {
    case validUrl
    
    var scheme: APISchemeType {
      switch self {
      case .validUrl:
          .https
      }
    }
    
    var host: String? {
      switch self {
      case .validUrl:
        return ""
      }
    }
    
    var path: String {
      switch self {
      case .validUrl:
        return ""
      }
    }
    
    var queryItems: [URLQueryItem]? {
      return nil
    }
    
    var urlRequest: URLRequest? {
      guard let url else { return nil }
      let urlRequest = URLRequest(url: url)
      
      switch self {
      case .validUrl:
        return nil
      }
    }
  }

At this point every case in the enum will represent a certain api call. The url proprty in the EndPointProtocol have it's own implementation so you don't have to do it:

public extension EndPointProtocol {
  var url: URL? {
    var urlComponents = URLComponents()
    urlComponents.scheme = scheme.rawValue
    urlComponents.host = host
    urlComponents.path = path
    urlComponents.queryItems = queryItems
    
    return urlComponents.url
  }
}

if you want to make a custome url session or add headers to the request. Use the urlRequest property in the EndPointProtocol and custome the request based on the enum case. Then you are ready to use the GenricNetworkLayer struct.

GenricNetworkLayer

GenricNetworkLayer is a struct that containes two funcations public func data<T: Codable>(for endpoint: EndPointProtocol) async throws -> (result: T, statusCode: Int) where T: Codable and public func data(from endPoint: EndPointProtocol) async throws -> urlDataResult both of them take instance of EndPointProtocol as an input. But the diffrent is the output.

The first one will fetch the data from the api then decode it using the JsonDecoder and output the result with the status code in a tuple.

let resultedData: (result: Int, statusCode: Int) = try! await genericNetworkLayer.data<Int>(for: endPoint)
 
// This will decode the data after fetching it
// from the api to Int and output
// the result with the status code

The second one was made to give you the ablitiy to have your own decoding logic, so it just fetches the data and output it with the status code in a tuple calle urlDataResult, which is a typealias.

let resultedData = try await genericNetworkLayer.data(from: endpoint)
 
// The resultedData will contain (Data, statuscode) as a tuple

Testing

For the testing part all you have to do to test the GenricNetworkLayer implementation is to make a subclass of the URlProtocol for refrence look at the GenericNetworkLayerTests.swift

Future Updates

• Adding more URlSession methods to the struct.
• Scalible for any app size

Author

This pacakge was created by Eng.Omar Elsayed to help the iOS comuntity and make there life easir. if you have any suggestions contact me at eng.omar.elsayed@hotmail.com