SwiftUI_apiCall_async_Await

import Foundation


enum HttpMethod:String {
    case get = "GET"
    case post = "POST"
    case put = "PUT"
    case delete = "DELETE"
}

enum NetworkError:Error {
    case invlaidURL
    case serverError(Int)
    case decodingError
    case unknown
}

class APIService {
    
    static let shared = APIService()
    private init(){ }
    
    func request<T:Codable>(endpoint:String, method:HttpMethod = .get, headers: [String: String]? = nil, parameters: [String: Any]? = nil) async throws -> T {
        
        guard let url = URL(string: endpoint) else {
            throw URLError(.badURL)
        }
        
        var request = URLRequest(url: url)
        request.httpMethod = method.rawValue
        headers?.forEach {
            request.addValue($0.value, forHTTPHeaderField: $0.key)
        }
        
        if let parameters {
            request.httpBody = try JSONSerialization.data(withJSONObject: parameters)
            request.addValue("application/json", forHTTPHeaderField: "Content-Type")
        }
        
        let (data, response) = try await URLSession.shared.data(for: request)
        
        guard let httpresponse = response as? HTTPURLResponse, (200...299).contains(httpresponse.statusCode) else {
            throw URLError(.badServerResponse)
        }
        return try JSONDecoder().decode(T.self, from: data)
    }
}

=======================

import Foundation



enum APIEndPoint {
    static let baseURL = "https://newsapi.org/v2/everything?q=tesla&from=2026-01-10&sortBy=publishedAt&apiKey="
    
    case news
    
    var url:String {
        switch self {
        case .news : return "\(APIEndPoint.baseURL)"
        }
    }
}

ViewModel_Call

import Foundation


class NewsViewModel:ObservableObject {
    
    @Published var newList:[Articles] = []
    
    init() {
        Task {await self.getNews()}
    }
    
    
    @MainActor
    func getNews() async {
        do {
            let response:NewsModelRes = try await APIService.shared.request(endpoint: APIEndPoint.news.url)
            self.newList = response.articles ?? []
            print(self.newList.count)
        }
        catch {
            print("Request failed:\(error)")
        }
    }
}


//POST
//let response:NewsModelRes = try await APIService.shared.request(endpoint: APIEndPoint.news.url, method: .put, headers: nil, parameters: [:])


==========================


import Foundation


struct NewsModelRes:Codable {
    
    let status:String?
    let totalResults:Int?
    let articles:[Articles]?
    
    enum CodingKeys: String, CodingKey {
        case status
        case totalResults
        case articles
    }
}

struct Articles:Codable, Identifiable {
    var id : String {url ?? ""}
        let author: String?
        let title: String?
        let description: String?
        let url: String?
        let urlToImage: String?
    
    enum CodingKeys: String, CodingKey {
        
        case author
        case title
        case description
        case url
        case urlToImage
    }
}