feat: added cache layer to the Store (#2696)

Kit/plugins/Store.swift

@@ -14,58 +14,90 @@ import Cocoa
 public class Store {
     public static let shared = Store()
     private let defaults = UserDefaults.standard
+    private var cache: [String: Any] = [:]
+    private let cacheQueue = DispatchQueue(label: "eu.exelban.Stats.Store.cache", attributes: .concurrent)
     
-    public init() {}
+    public init() {
+        self.loadCache()
+    }
+    
+    private func loadCache() {
+        guard let bundleId = Bundle.main.bundleIdentifier,
+              let domain = self.defaults.persistentDomain(forName: bundleId) else { return }
+        self.cache = domain
+    }
+    
+    private func getValue<T>(for key: String, type: T.Type) -> T? {
+        return self.cacheQueue.sync {
+            return self.cache[key] as? T
+        }
+    }
+    
+    private func setValue(_ value: Any?, for key: String) {
+        self.cacheQueue.async(flags: .barrier) {
+            self.cache[key] = value
+        }
+        
+        if let value = value {
+            self.defaults.set(value, forKey: key)
+        } else {
+            self.defaults.removeObject(forKey: key)
+        }
+    }
     
     public func exist(key: String) -> Bool {
-        return self.defaults.object(forKey: key) == nil ? false : true
+        return self.getValue(for: key, type: Any.self) != nil
     }
     
     public func remove(_ key: String) {
-        self.defaults.removeObject(forKey: key)
+        self.setValue(nil, for: key)
     }
     
     public func bool(key: String, defaultValue value: Bool) -> Bool {
-        return !self.exist(key: key) ? value : defaults.bool(forKey: key)
+        return self.getValue(for: key, type: Bool.self) ?? value
     }
     
     public func string(key: String, defaultValue value: String) -> String {
-        return (!self.exist(key: key) ? value : defaults.string(forKey: key))!
+        return self.getValue(for: key, type: String.self) ?? value
     }
     
     public func int(key: String, defaultValue value: Int) -> Int {
-        return (!self.exist(key: key) ? value : defaults.integer(forKey: key))
+        return self.getValue(for: key, type: Int.self) ?? value
     }
     
     public func array(key: String, defaultValue value: [Any]) -> [Any] {
-        return (!self.exist(key: key) ? value : defaults.array(forKey: key)!)
+        return self.getValue(for: key, type: [Any].self) ?? value
     }
     
     public func data(key: String) -> Data? {
-        return defaults.data(forKey: key)
+        return self.getValue(for: key, type: Data.self)
     }
     
     public func set(key: String, value: Bool) {
-        self.defaults.set(value, forKey: key)
+        self.setValue(value, for: key)
     }
     
     public func set(key: String, value: String) {
-        self.defaults.set(value, forKey: key)
+        self.setValue(value, for: key)
     }
     
     public func set(key: String, value: Int) {
-        self.defaults.set(value, forKey: key)
+        self.setValue(value, for: key)
     }
     
     public func set(key: String, value: Data) {
-        self.defaults.set(value, forKey: key)
+        self.setValue(value, for: key)
     }
     
     public func set(key: String, value: [Any]) {
-        self.defaults.set(value, forKey: key)
+        self.setValue(value, for: key)
     }
     
     public func reset() {
+        self.cacheQueue.async(flags: .barrier) {
+            self.cache.removeAll()
+        }
+        
         self.defaults.dictionaryRepresentation().keys.forEach { key in
             self.defaults.removeObject(forKey: key)
         }
@@ -81,17 +113,22 @@ public class Store {
     }
     
     public func `import`(from url: URL) {
-        guard let id = Bundle.main.bundleIdentifier, let dict = NSDictionary(contentsOf: url) as? [String: Any] else { return }
+        guard let id = Bundle.main.bundleIdentifier,
+              let dict = NSDictionary(contentsOf: url) as? [String: Any] else { return }
         
-        var importedDict = dict
         let keysToPreserve = ["telemetry_id", "access_token", "refresh_token"]
+        var importedDict = dict
         
         for key in keysToPreserve {
-            if let existingValue = self.defaults.string(forKey: key) {
+            if let existingValue = getValue(for: key, type: String.self) {
                 importedDict[key] = existingValue
             }
         }
         
+        self.cacheQueue.async(flags: .barrier) {
+            self.cache = importedDict
+        }
+        
         self.defaults.setPersistentDomain(importedDict, forName: id)
         restartApp(self)
     }