func getChatGptResponse() async throws -> ChatGptResponse { // many things can go wrong}
let endpoint = "https://raw.githubusercontent.com/iharnoor/iOS-Week4-Calculator-ChatGpt/main/server.json"
guard let url = URL(string:endpoint) else { throw ChatGptError.invalidURL }
let (data, response) = try await URLSession.shared.data(from: url)
guard let response = response as? HTTPURLResponse, response.statusCode == 200 else {
throw ChatGptError.invalidResponse
}
do {
let decoder = JSONDecoder()
decoder.keyDecodingStrategy = .convertFromSnakeCase
return try decoder.decode(ChatGptResponse.self, from: data)
} catch {
throw ChatGptError.invalidData
}
}
