update

OnlineChatSdk/Classes/ChatConfig.swift

@@ -1,5 +1,61 @@
 import Foundation
 
 class ChatConfig {
-    let defaults = UserDefaults.standard
+
+    private static var instance: ChatConfig?
+
+    private struct ConfigKeys {
+        static let configKeyApiToken = "onlineChatSdkConfig_apiToken"
+        static let configKeyClientId = "onlineChatSdkConfig_clientId"
+        static let configKeyLastDateTimeNewMessage = "onlineChatSdkConfig_lastDateTimeNewMessage"
+    }
+
+    private let config: UserDefaults
+
+    init() {
+        self.config = UserDefaults.standard
+    }
+
+    private static func getInstance() -> ChatConfig {
+        if instance == nil {
+            instance = ChatConfig()
+        }
+        return instance!
+    }
+
+    public static func setLastDateTimeNewMessage(_ dateTime: String) {
+        getInstance().setConfig(ConfigKeys.configKeyLastDateTimeNewMessage, dateTime)
+    }
+
+    public static func getLastDateTimeNewMessage() -> String {
+        getInstance().getConfigString(ConfigKeys.configKeyLastDateTimeNewMessage)
+    }
+
+    public static func setClientId(_ clientId: String) {
+        getInstance().setConfig(ConfigKeys.configKeyClientId, clientId)
+    }
+
+    public static func getClientId() -> String {
+        getInstance().getConfigString(ConfigKeys.configKeyClientId)
+    }
+
+    public static func setApiToken(_ apiToken: String) {
+        getInstance().setConfig(ConfigKeys.configKeyApiToken, apiToken)
+    }
+
+    public static func getApiToken() -> String {
+        getInstance().getConfigString(ConfigKeys.configKeyApiToken)
+    }
+
+    private func setConfig(_ key: String, _ value: String) {
+        self.config.set(value, forKey: key)
+    }
+
+    private func setConfig(_ key: String, _ value: Int) {
+        self.config.set(value, forKey: key)
+    }
+
+    private func getConfigString(_ key: String) -> String {
+        self.config.value(forKey: key) as! String
+    }
 }