mirror of
https://github.com/firebase/firebase-ios-sdk
synced 2026-11-10 22:45:59 +05:45
87 lines
3.1 KiB
Swift
87 lines
3.1 KiB
Swift
// Copyright 2021 Google LLC
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
import Foundation
|
|
#if SWIFT_PACKAGE
|
|
@_implementationOnly import GoogleUtilities_UserDefaults
|
|
#else
|
|
@_implementationOnly import GoogleUtilities
|
|
#endif // SWIFT_PACKAGE
|
|
|
|
/// Model info object with details about downloaded and locally available model.
|
|
class LocalModelInfo {
|
|
/// Model name.
|
|
let name: String
|
|
|
|
/// Hash of the model, as returned by server.
|
|
let modelHash: String
|
|
|
|
/// Size of the model, as returned by server.
|
|
let size: Int
|
|
|
|
init(name: String, modelHash: String, size: Int) {
|
|
self.name = name
|
|
self.modelHash = modelHash
|
|
self.size = size
|
|
}
|
|
|
|
/// Convenience init to create local model info from remotely downloaded model info.
|
|
convenience init(from remoteModelInfo: RemoteModelInfo) {
|
|
self.init(
|
|
name: remoteModelInfo.name,
|
|
modelHash: remoteModelInfo.modelHash,
|
|
size: remoteModelInfo.size
|
|
)
|
|
}
|
|
|
|
/// Convenience init to create local model info from stored info in user defaults.
|
|
convenience init?(fromDefaults defaults: GULUserDefaults, name: String, appName: String) {
|
|
let defaultsPrefix = LocalModelInfo.getUserDefaultsKeyPrefix(appName: appName, modelName: name)
|
|
guard let modelHash = defaults.string(forKey: "\(defaultsPrefix).model-hash") else {
|
|
return nil
|
|
}
|
|
let size = defaults.integer(forKey: "\(defaultsPrefix).model-size")
|
|
self.init(name: name, modelHash: modelHash, size: size)
|
|
}
|
|
}
|
|
|
|
/// Extension to write local model info to user defaults.
|
|
extension LocalModelInfo: DownloaderUserDefaultsWriteable {
|
|
// Get user defaults key prefix.
|
|
private static func getUserDefaultsKeyPrefix(appName: String, modelName: String) -> String {
|
|
let bundleID = Bundle.main.bundleIdentifier ?? ""
|
|
return "\(bundleID).\(appName).\(modelName)"
|
|
}
|
|
|
|
/// Write local model info to user defaults.
|
|
func writeToDefaults(_ defaults: GULUserDefaults, appName: String) {
|
|
let defaultsPrefix = LocalModelInfo.getUserDefaultsKeyPrefix(appName: appName, modelName: name)
|
|
defaults.setObject(modelHash, forKey: "\(defaultsPrefix).model-hash")
|
|
defaults.setObject(size, forKey: "\(defaultsPrefix).model-size")
|
|
}
|
|
|
|
func removeFromDefaults(_ defaults: GULUserDefaults, appName: String) {
|
|
let defaultsPrefix = LocalModelInfo.getUserDefaultsKeyPrefix(appName: appName, modelName: name)
|
|
defaults.removeObject(forKey: "\(defaultsPrefix).model-hash")
|
|
defaults.removeObject(forKey: "\(defaultsPrefix).model-size")
|
|
}
|
|
}
|
|
|
|
/// Named user defaults for FirebaseML.
|
|
extension GULUserDefaults {
|
|
static var firebaseMLDefaults: GULUserDefaults {
|
|
return GULUserDefaults(suiteName: "com.google.firebase.ml")
|
|
}
|
|
}
|