iOS/Sources/Shared/API/Webhook/Sensors/SensorProviderDependencies....

38 lines
1.2 KiB
Swift

import Foundation
public protocol SensorProviderUpdateSignaler: AnyObject {
init(signal: @escaping () -> Void)
}
public class SensorProviderDependencies {
var updateSignalHandler: (SensorProvider.Type) -> Void = { _ in }
private var updateSignalers: [String: [SensorProviderUpdateSignaler]] = [:]
private func key(for sensorProvider: SensorProvider) -> String {
String(describing: type(of: sensorProvider))
}
func existingSignaler<SignalerType: SensorProviderUpdateSignaler>(
for sensorProvider: SensorProvider
) -> SignalerType? {
let key = key(for: sensorProvider)
return updateSignalers[key]?.compactMap({ $0 as? SignalerType }).first
}
public func updateSignaler<SignalerType: SensorProviderUpdateSignaler>(
for sensorProvider: SensorProvider
) -> SignalerType {
if let existing: SignalerType = existingSignaler(for: sensorProvider) {
return existing
}
let sensorType = type(of: sensorProvider)
let created = SignalerType(signal: { [weak self] in
self?.updateSignalHandler(sensorType)
})
updateSignalers[key(for: sensorProvider), default: []] += [created]
return created
}
}