AnyCodable

AnyCodable.swift

public struct AnyCodable: Codable {
    public let value: Any?
    
    public init(_ value: Any?) {
        self.value = value
    }
    
    public init(from decoder: Decoder) throws {
        let container = try decoder.singleValueContainer()
        
        if container.decodeNil() {
            self.value = nil
        } else if let value = try? container.decode([String: AnyCodable].self) {
            self.value = value.filter({ $0.value.value != nil }).mapValues({ $0.value! })
        } else if let value = try? container.decode([AnyCodable].self) {
            self.value = value.compactMap({ $0.value })
        } else if let value = try? container.decode(Bool.self) {
            self.value = value
        } else if let value = try? container.decode(String.self) {
            self.value = value
        } else if let value = try? container.decode(Int.self) {
            self.value = value
        } else if let value = try? container.decode(Int8.self) {
            self.value = value
        } else if let value = try? container.decode(Int16.self) {
            self.value = value
        } else if let value = try? container.decode(Int32.self) {
            self.value = value
        } else if let value = try? container.decode(Int64.self) {
            self.value = value
        } else if let value = try? container.decode(UInt.self) {
            self.value = value
        } else if let value = try? container.decode(UInt8.self) {
            self.value = value
        } else if let value = try? container.decode(UInt16.self) {
            self.value = value
        } else if let value = try? container.decode(UInt32.self) {
            self.value = value
        } else if let value = try? container.decode(UInt64.self) {
            self.value = value
        } else if let value = try? container.decode(Double.self) {
            self.value = value
        } else if let value = try? container.decode(Float.self) {
            self.value = value
        } else {
            throw DecodingError.dataCorruptedError(in: container, debugDescription: "Unable to decode value")
        }
    }
    public func encode(to encoder: Encoder) throws {
        var container = encoder.singleValueContainer()
        
        switch value {
        case nil:
            try container.encodeNil()
        case let value as [String: AnyCodable]:
            try container.encode(value)
        case let value as [String: Any]:
            try container.encode(value.mapValues(AnyCodable.init))
        case let value as [AnyCodable]:
            try container.encode(value)
        case let value as [Any]:
            try container.encode(value.map(AnyCodable.init))
        case let value as Bool:
            try container.encode(value)
        case let value as String:
            try container.encode(value)
        case let value as Int:
            try container.encode(value)
        case let value as Int8:
            try container.encode(value)
        case let value as Int16:
            try container.encode(value)
        case let value as Int32:
            try container.encode(value)
        case let value as Int64:
            try container.encode(value)
        case let value as UInt:
            try container.encode(value)
        case let value as UInt8:
            try container.encode(value)
        case let value as UInt16:
            try container.encode(value)
        case let value as UInt32:
            try container.encode(value)
        case let value as UInt64:
            try container.encode(value)
        case let value as Double:
            try container.encode(value)
        case let value as Float:
            try container.encode(value)
        default:
            throw EncodingError.invalidValue(value!, .init(codingPath: [], debugDescription: "Unable to encode value"))
        }
    }
}

extension KeyedDecodingContainer {
    public func decode(_ type: [String: Any].Type, forKey key: K) throws -> [String: Any] {
        let anyCodable = try decode(AnyCodable.self, forKey: key)
        guard let value = anyCodable.value as? [String: Any] else {
            let type = Swift.type(of: anyCodable.value)
            throw DecodingError.typeMismatch(type, .init(codingPath: [], debugDescription: "Expected [String: Any], found \(type)"))
        }
        return value
    }
}
extension KeyedEncodingContainer {
    public mutating func encode(_ value: [String: Any], forKey key: K) throws {
        try encode(AnyCodable(value), forKey: key)
    }
}