fixing crash and implementation period for clear local db SDK, by default 7 days

Author: Arief Nur Putranto

QiscusCore.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
 s.name         = "QiscusCore"
-s.version      = "1.13.5"
+s.version      = "1.13.6"
 s.summary      = "Qiscus Core SDK for iOS"
 s.description  = <<-DESC
 Qiscus SDK for iOS contains Qiscus public Model.

Source/QiscusCore/QiscusCore.swift

@@ -10,7 +10,7 @@ import Foundation
 import UIKit
 
 public class QiscusCore: NSObject {
-    public static let qiscusCoreVersionNumber:String = "1.12.0"
+    public static let qiscusCoreVersionNumber:String = "1.13.6"
     class var bundle:Bundle{
         get{
             let podBundle = Bundle(for: QiscusCore.self)
@@ -112,6 +112,7 @@ public class QiscusCore: NSObject {
 
     public static var fromSetupWithCustomServer : Bool = false
     public static var reconnectCounter : Int = 0
+    public static var maxDayPeriodicClearLocalDB : Int = 7 //by default 7 days
 
     @available(*, deprecated, message: "will soon become unavailable.")
     public static var enableDebugPrint: Bool = false
@@ -163,6 +164,10 @@ public class QiscusCore: NSObject {
             config.server   = QiscusServer(url: URL.init(string: "https://api.qiscus.com")!, realtimeURL: self.defaultRealtimeURL, realtimePort: 1885, brokerLBUrl: self.defaultBrokerUrl)
         }
 
+        if QiscusCore.hasSetupUser(){
+            checkLastClearDB()
+        }
+        
         self.eventdelegate?.onDebugEvent("InitQiscus-setupWithCustomServer", message: "start check QiscusCore.isLogined \(QiscusLogger.getDateTime())")
         self.fromSetupWithCustomServer = true
 
@@ -201,8 +206,13 @@ public class QiscusCore: NSObject {
         config.eventdelegate = self.eventdelegate
         reconnectCounter = 0
 
+        
         config.server   = QiscusServer(url: URL.init(string: "https://api.qiscus.com")!, realtimeURL: self.defaultRealtimeURL, realtimePort: 1885, brokerLBUrl: self.defaultBrokerUrl)
 
+        if QiscusCore.hasSetupUser(){
+            checkLastClearDB()
+        }
+        
         self.eventdelegate?.onDebugEvent("InitQiscus-setupWithCustomServer", message: "start check QiscusCore.isLogined \(QiscusLogger.getDateTime())")
         self.fromSetupWithCustomServer = true
 
@@ -254,6 +264,10 @@ public class QiscusCore: NSObject {
                 //realtime.setup(appName: AppID)
         }
 
+        if QiscusCore.hasSetupUser(){
+            checkLastClearDB()
+        }
+        
         self.eventdelegate?.onDebugEvent("InitQiscus-setupWithCustomServer", message: "start check QiscusCore.isLogined \(QiscusLogger.getDateTime())")
         self.fromSetupWithCustomServer = true
 
@@ -272,6 +286,40 @@ public class QiscusCore: NSObject {
         getAppConfig()
     }
 
+    private class func checkLastClearDB(){
+        if let last = self.config.lastClearDB{
+            let dateFormatter = DateFormatter()
+            dateFormatter.dateFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssZ"
+            dateFormatter.timeZone = .current
+
+            let dateString = last
+
+            if let date = dateFormatter.date(from: dateString) {
+                let dateNow = Date()
+                let differerence = Calendar.current.dateComponents([.day], from: date, to: dateNow)
+                if let dayDiff = differerence.day{
+                    if dayDiff >= maxDayPeriodicClearLocalDB {
+                        QiscusCore.database.clear()
+                        //save to sharedPref
+                        self.config.lastClearDB = self.getTimestamp()
+                    }
+                }
+            }
+        }else{
+            QiscusCore.database.clear()
+            //save to sharedPref
+            self.config.lastClearDB = self.getTimestamp()
+        }
+    }
+    
+    private class func getTimestamp() -> String {
+        let formatter = DateFormatter()
+        formatter.dateFormat    = "yyyy-MM-dd'T'HH:mm:ssZ"
+        formatter.timeZone      = TimeZone.current
+        formatter.locale = Locale(identifier: "en_US_POSIX")
+        return formatter.string(from: Date())
+    }
+    
     private class func getAppConfig(){
         network.getAppConfig(onSuccess: { (appConfig) in
             QiscusCore.enableEventReport = appConfig.enableEventReport
@@ -547,6 +595,7 @@ public class QiscusCore: NSObject {
         network.login(email: userID, password: userKey, username: username, avatarUrl: avatarURL?.absoluteString, extras: extras, onSuccess: { (user) in
             // save user in local
             ConfigManager.shared.user = user
+            ConfigManager.shared.lastClearDB = self.getTimestamp()
             realtime.connect(username: user.email, password: user.token)
             onSuccess(user)
         }) { (error) in
@@ -571,6 +620,7 @@ public class QiscusCore: NSObject {
         network.login(email: userId, password: userKey, username: username, avatarUrl: avatarURL?.absoluteString, extras: extras, onSuccess: { (user) in
             // save user in local
             ConfigManager.shared.user = user
+            ConfigManager.shared.lastClearDB = self.getTimestamp()
             realtime.connect(username: user.email, password: user.token)
             onSuccess(user)
         }) { (error) in
@@ -592,6 +642,7 @@ public class QiscusCore: NSObject {
         network.login(identityToken: token, onSuccess: { (user) in
             // save user in local
             ConfigManager.shared.user = user
+            ConfigManager.shared.lastClearDB = self.getTimestamp()
             onSuccess(user)
         }) { (error) in
             onError(error)
@@ -610,6 +661,7 @@ public class QiscusCore: NSObject {
         network.login(identityToken: token, onSuccess: { (user) in
             // save user in local
             ConfigManager.shared.user = user
+            ConfigManager.shared.lastClearDB = self.getTimestamp()
             onSuccess(user)
         }) { (error) in
             onError(error)

Source/QiscusCore/Storage/ConfigManager.swift

@@ -253,6 +253,28 @@ public class ConfigManager : NSObject {
 
     }
 
+    var lastClearDB : String?{
+        get{
+           return getLastClearDB()
+        }
+        set{
+            guard let value = newValue else { return }
+            setLastClearDB(value)
+        }
+    }
+    
+    private func setLastClearDB(_ value: String) {
+        // save in file
+        let defaults = UserDefaults.standard
+        defaults.set(value, forKey: filename("lastClearDB"))
+    }
+    
+    private func getLastClearDB() -> String? {
+        // save in file
+        let defaults = UserDefaults.standard
+        return defaults.string(forKey: filename("lastClearDB")) ?? nil
+    }
+    
     func clearConfig() {
         // remove file user
         let storage = UserDefaults.standard
@@ -273,6 +295,7 @@ public class ConfigManager : NSObject {
         storage.removeObject(forKey: filename("enableDisableRealtimeManuallly"))
         storage.removeObject(forKey: filename("refreshToken"))
         storage.removeObject(forKey: filename("tokenExpiresAt"))
+        storage.removeObject(forKey: filename("lastClearDB"))
         self.userCache = nil
     }
 }

Source/QiscusCore/Util/QiscusThread.swift

@@ -9,8 +9,10 @@ import Foundation
 
 class QiscusThread {
     static func background(_ work: @escaping () -> ()) {
-        DispatchQueue.global(qos: .background).sync {
-            work()
+        DispatchQueue.main.async{
+            DispatchQueue.global(qos: .background).sync {
+                work()
+            }
         }
     }