import Foundation import KeychainAccess enum APIError : Error { case accessTokenExpired case networkError // Add more error cases as needed } class APIManager { private let keychain = Keychain (service: "com.example.app.refreshToken" ) private let refreshTokenKey = "refreshToken" private var accessToken: String ? func callAPI < T : Codable >( urlString : String , method : String , parameters : [ String : Any ] ? , completion : @escaping ( Result < T , APIError >) -> Void ) { guard let url = URL (string: urlString) else { completion(.failure(.networkError)) return } var request = URLRequest (url: url) request.httpMethod = method // Add access token to the request headers if available if let token = accessToken { request.setValue( "Bearer \(token) " , forHTTPHeaderField: "Aut...
SOLID Principles in Swift - ( Single Responsibility Principle(SRP), Open/Closed Principle, Liskov Substitution Principle, Interface Segregation, Dependency Inversion)
SOLID Principles in Swift Single Responsibility Principle Open/Closed Principle Liskov Substitution Principle Interface Segregation Dependency Inversion S - Single Responsibility Principle(SRP) Single Responsibility Principle (SRP) is that every class, module, or function in a program should have one responsibility(Task) in a program. Example:- A Simple Class For multiple Responsibility class SimpleHandler { func simpleHandle() { let data = requestToDataAPI() let array = parseToResponse(data: data) saveToDatabase(array: array) } private func requestToDataAPI() -> Data { // Networ...