diff --git a/OnlineChatSdk/Classes/ChatConfig.swift b/OnlineChatSdk/Classes/ChatConfig.swift
index f87530d..b169dd5 100644
--- a/OnlineChatSdk/Classes/ChatConfig.swift
+++ b/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
+    }
 }
\ No newline at end of file
diff --git a/OnlineChatSdk/Classes/ChatController.swift b/OnlineChatSdk/Classes/ChatController.swift
index 410cd2c..44c37e3 100644
--- a/OnlineChatSdk/Classes/ChatController.swift
+++ b/OnlineChatSdk/Classes/ChatController.swift
@@ -33,14 +33,59 @@ open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessa
     private var didFinish: Bool = false
     private var widgetUrl: String = ""
 
-    public static func getUnreadedMessages() {
+    private static func getUnreadedMessages(_ startDate: String, callback: @escaping (NSDictionary?) -> Void) {
+        let token = ChatConfig.getApiToken()
+        if token == "" {
+            callback([
+                "success": false,
+                "error": [
+                    "code": 0,
+                    "descr": "Не задан token"
+                ]
+            ])
+        }
+        let clientId = ChatConfig.getClientId()
+        if clientId == "" {
+            callback([
+                "success": false,
+                "error": [
+                    "code": 0,
+                    "descr": "Не задан clientId"
+                ]
+            ])
+        }
+        let dtFormat = ChatDateFormatter()
+        let currentDate = NSDate() as Date
+
+        ChatApi().messages(token, params: [
+            "client": [
+                "clientId": clientId
+            ],
+            "sender": "operator",
+            "status": "unreaded",
+            "dateRange": [
+                "start": startDate,
+                "stop": dtFormat.string(from: currentDate)
+            ]
+        ] as [String: Any], callback: {(result) in
+            callback([
+                "success": false,
+                "error": [
+                    "code": 0,
+                    "descr": "Не реализовано"
+                ]
+            ])
+        })
+    }
+
+    public static func getUnreadedMessages(callback: @escaping (NSDictionary?) -> Void) {
 
     }
 
-    public static func getNewMessages() {
+    public static func getNewMessages(callback: @escaping (NSDictionary?) -> Void) {
 
     }
-        
+
     override public func loadView() {
         let contentController = WKUserContentController()
         contentController.add(self, name: "chatInterface")
@@ -123,6 +168,10 @@ open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessa
     }
     
     public func load(_ id: String, _ domain: String, _ language: String = "", _ clientId: String = "", _ apiToken: String = "") {
+        if apiToken != "" {
+            ChatConfig.setApiToken(apiToken)
+        }
+
         var setup: Dictionary<String, Any> = [:]
         if !language.isEmpty {
             setup["language"] = language
@@ -211,7 +260,9 @@ open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessa
         let name = body!["name"] as! String
         switch name {
             case ChatController.event_clientId:
-                onClientId(data!["clientId"] != nil ? data!["clientId"] as! String : "")
+                let clientId = data!["clientId"] != nil ? data!["clientId"] as! String : ""
+                ChatConfig.setClientId(clientId)
+                onClientId(clientId)
                 break
             case ChatController.event_sendRate:
                 onSendRate(data!)
@@ -250,7 +301,6 @@ open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessa
         
     }
 
-
     open func onSendRate(_ data: NSDictionary) {
         
     }
diff --git a/OnlineChatSdk/Classes/ChatDateFormatter.swift b/OnlineChatSdk/Classes/ChatDateFormatter.swift
new file mode 100644
index 0000000..cbd5eae
--- /dev/null
+++ b/OnlineChatSdk/Classes/ChatDateFormatter.swift
@@ -0,0 +1,15 @@
+import Foundation
+
+class ChatDateFormatter : DateFormatter {
+    override init() {
+        super.init()
+        self.calendar = Calendar(identifier: Calendar.Identifier.iso8601)
+        self.dateFormat = "yyyy'-'MM'-'dd' 'HH':'mm':'ss'"
+        self.locale = Locale(identifier: "en")
+        self.timeZone = TimeZone(secondsFromGMT: 10800)
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+}