toomuchflatmap.swift

extension Device: Decodable {
	static func decode(json: AnyObject) throws -> Device {
		
		guard let resolvedTypes = try json => "devices" as? NSArray else {
			throw NSArraySucks.ItReallySucks
		}
		
		let types = try (resolvedTypes as [AnyObject]).map {
			try decodeAsOneOf($0, objectTypes: MSensorType.self, ColourType.self, LEDType.self, GenericType.self)
		}.flatMap {
			$0 as? DeviceType
		}
		
		return try Device(name: json => "name",
		                  number: json => "number",
		                  exists: (json => "exists") != 0,
		                  ready: (json => "ready") != 0,
		                  groups: json => "groups",
		                  scenes: scenesToSensicalScenes(json => "scenes"),
		                  maxLevel: json => "maxlevel",
		                  minLevel: json => "minlevel",
		                  physicalMinLevel: json => "physicalminlevel",
		                  powerOnLevel: json => "poweronlevel",
		                  systemFailureLevel: json => "systemfailurelevel",
		                  level: json => "level",
		                  lampfail: (json => "lampfail") != 0,
		                  limitError: (json => "limiterror") != 0,
		                  actuatorType: json => "actuatortype",
		                  busErrors: json => "buserrors",
		                  multiAddressedProbability: json => "doubleaddressedprobability",
		                  types: types)
	}
}