mirror of
https://github.com/firebase/firebase-ios-sdk
synced 2026-11-09 22:36:01 +05:45
77 lines
2.6 KiB
Swift
77 lines
2.6 KiB
Swift
/*
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* Copyright 2022 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#if SWIFT_PACKAGE
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@_exported import FirebaseRemoteConfigInternal
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#endif // SWIFT_PACKAGE
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import FirebaseCore
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import SwiftUI
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extension Notification.Name {
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// Listens to FirebaseRemoteConfig SDK if new configs are activated.
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static let onRemoteConfigActivated = Notification.Name("FIRRemoteConfigActivateNotification")
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}
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// Make sure this key is consistent with kFIRGoogleAppIDKey in FirebaseCore SDK
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let FirebaseRemoteConfigAppNameKey = "FIRAppNameKey"
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@available(iOS 14.0, macOS 11.0, macCatalyst 14.0, tvOS 14.0, watchOS 7.0, *)
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class RemoteConfigValueObservable<T: Decodable>: ObservableObject {
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@Published var configValue: T
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private let key: String
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private let remoteConfig: RemoteConfig
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private let fallbackValue: T
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init(key: String, fallbackValue: T) {
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self.key = key
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remoteConfig = RemoteConfig.remoteConfig()
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self.fallbackValue = fallbackValue
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// Initialize with fallback value
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configValue = fallbackValue
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// Check cached remote config value
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updateConfigValue()
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NotificationCenter.default.addObserver(
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self, selector: #selector(configDidActivate), name: .onRemoteConfigActivated, object: nil
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)
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}
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@objc func configDidActivate(notification: NSNotification) {
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// This feature is only available in the default app.
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let appName = notification.userInfo?[FirebaseRemoteConfigAppNameKey] as? String
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if FirebaseApp.app()?.name != appName {
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return
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}
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// The activated config may no longer contain the key, so re-evaluate the default and the
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// fallback value too.
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updateConfigValue()
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}
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/// Sets `configValue` to the remote or default value for `key`, or to `fallbackValue` if the key
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/// has neither or its value can't be decoded.
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private func updateConfigValue() {
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do {
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let remoteValue: RemoteConfigValue = remoteConfig[key]
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if remoteValue.source == .remote || remoteValue.source == .default {
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configValue = try remoteValue.decoded()
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} else {
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configValue = fallbackValue
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}
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} catch {
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configValue = fallbackValue
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}
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}
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}
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