//

// JSONHelpers.swift

// JSONCodable

//

// Created by Matthew Cheok on 17/7/15.

// Copyright © 2015 matthewcheok. All rights reserved.

//

// Convenience

public typealias JSONObject = [String: Any]

// Dictionary handling

protocol JSONDictionary {

var count: Int { get }

func valuesAreJSONEncodable() -> Bool

func valuesMadeJSONEncodable() -> [String: JSONEncodable]

var valueType: Any.Type { get }

}

extension Dictionary : JSONDictionary {

var valueType: Any.Type {

return Value.self

}

func valuesAreJSONEncodable() -> Bool {

return Key.self is String.Type && (Value.self is JSONEncodable.Type || Value.self is JSONEncodable.Protocol)

}

func valuesMadeJSONEncodable() -> [String: JSONEncodable] {

var dict: [String: JSONEncodable] = [:]

for (k, v) in self {

dict[String(describing:k)] = v as? JSONEncodable

}

return dict

}

}

// Array handling

protocol JSONArray {

var count: Int { get }

func elementsAreJSONEncodable() -> Bool

func elementsMadeJSONEncodable() -> [JSONEncodable]

var elementType: Any.Type { get }

}

extension Array: JSONArray {

var elementType: Any.Type {

return Element.self

}

func elementsAreJSONEncodable() -> Bool {

return Element.self is JSONEncodable.Type || Element.self is JSONEncodable.Protocol

}

func elementsMadeJSONEncodable() -> [JSONEncodable] {

return self.map {$0 as! JSONEncodable}

}

}

// Optional handling

protocol JSONOptional {

var wrapped: Any? { get }

}

extension Optional: JSONOptional {

var wrapped: Any? { return self }

}