medium_decodable.swift

import Foundation

extension Decodable {
    static func parse(from item: Any?, strategy: JSONDecoder.KeyDecodingStrategy = .useDefaultKeys) -> Self? {
        let decoder = JSONDecoder()
        decoder.keyDecodingStrategy = strategy
        
        do {
            guard let data = self.data(from: item) else {
                return nil
            }
            
            return try decoder.decode(Self.self, from: data)
        } catch {
            print(error.localizedDescription)
        }
        
        return nil
    }
    
    private static func data(from item: Any?) -> Data? {
        switch item {
        case let data as Data:
            return data
        case let string as String:
            return string.data(using: .utf8)
        case let item?:
            return try? JSONSerialization.data(withJSONObject: item, options: [])
        default:
            return nil
        }
    }
}