JSONSmart - Simplified work with json

gistfile1.txt

//
//  JSONSmart.swift
//  
//
//  Created by Aleksei Gordeev on 06.03.2021.
//

import Foundation

/// Simplifies the JSON content access. Inspired by SwiftyJSON.
internal struct JSONSmart {
    
    let any: Any
    
    var string: String? {
        return any as? String
    }
    
    var int: Int? {
        return any as? Int
    }
    
    var array: [Any]? {
        return asArray(valueType: Any.self)
    }
    
    var dictionary: [String : Any]? {
        return asDictionary(valueType: Any.self)
    }
    
    func asValue<ValueType>(ofType: ValueType.Type) -> ValueType? {
        return any as? ValueType
    }
    
    init(any: Any) {
        self.any = any
    }
    
    init(data: Data, options: JSONSerialization.ReadingOptions = []) throws {
        self.any = try JSONSerialization.jsonObject(with: data, options: options)
    }
    
    subscript(index: Int) -> JSONSmart? {
        return (asArray(valueType: Any.self)?[index]).flatMap({ JSONSmart(any: $0) })
    }
    
    subscript(key: String) -> JSONSmart? {
        return (asDictionary(valueType: Any.self)?[key]).flatMap({ JSONSmart(any: $0) })
    }
    
    func asArray<E>(valueType: E.Type) -> [E]? {
        return any as? [E]
    }
    
    func asDictionary<E>(valueType: E.Type) -> [String : E]? {
        return any as? [String : E]
    }
    
    func get<S>(valueOfType valueType: S.Type, at idx: Int) -> S? {
        return asArray(valueType: Any.self)?[idx] as? S
    }
    
    func get<S>(valueOfType valueType: S, for key: String) -> S? {
        return asDictionary(valueType: Any.self)?[key] as? S
    }
    
}