Skeleton of Notifications Manager is Set up

Need to implement request for: amazon, ebay, etsy, facebook

Vendoo.xcodeproj/project.pbxproj

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 				3E1DC3CF1D42328C0091BC60 /* CategoryCell.swift in Sources */,
 				3EC325111CF703A600626C48 /* ItemCell.swift in Sources */,
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 </Bucket>

Vendoo/HomeViewController.swift

@@ -16,11 +16,13 @@ class HomeViewController: UITabBarController {
     let firebaseManager = FirebaseManager()
     let ebayGraphManager = EbayWebServiceManager()
     var userListings: [Listing] = []
+    var notificationsManager = ServiceNotificationManager()
     
     
     override func viewDidLoad() {
         super.viewDidLoad()
         
+        self.notificationsManager.setManagers(fbGraphManager, fireManager: firebaseManager, ebayManager: ebayGraphManager, etsyManager: etsyManager)
         // Do any additional setup after loading the view.
         dispatch_async(dispatch_get_main_queue(), {
             
@@ -35,11 +37,12 @@ class HomeViewController: UITabBarController {
                 NSUserDefaults.standardUserDefaults().setObject(userDict!["name"] as? String, forKey: "name")
                 
                 if listingDict != nil {
+                    var notificationStartTracker = 0
                     dispatch_async(dispatch_get_main_queue(), {
-                        
+                        //let notificationStartGroup = dispatch_group_create()
-                        
                         for (key, values) in listingDict! {
                             let serviceGroup: dispatch_group_t = dispatch_group_create()
+                            //dispatch_group_enter(notificationStartGroup)
                             self.firebaseManager.ref.observeSingleEventOfType(.Value, withBlock: { snapshot in
                                 
                                 let databaseDict = snapshot.value as! [String : AnyObject]
@@ -54,6 +57,7 @@ class HomeViewController: UITabBarController {
                                     
                                     if(error != nil){
                                         print("problem retrieving items")
+                                        notificationStartTracker += 1
                                     }else{
                                         
                                         let mainImage = UIImage(data: dataMain!)
@@ -74,6 +78,9 @@ class HomeViewController: UITabBarController {
                                                 count+=1
                                                 if(count == 4){
                                                     dispatch_group_leave(serviceGroup)
+                                                    notificationStartTracker += 1
+                                                    //dispatch_group_enter(notificationStartGroup)
+                                                    //dispatch_group_leave(notificationStartGroup)
                                                 }
                                             })
                                             
@@ -93,12 +100,20 @@ class HomeViewController: UITabBarController {
                                                     itemKey: key,
                                                     networksSellingOn: (listingInfo!["networks"] as? Dictionary<String, Bool>)!
                                                 ))
+                                            print(notificationStartTracker)
+                                            if(notificationStartTracker == listingDict?.count){
+                                                NSNotificationCenter.defaultCenter().postNotificationName("finished_fetching_listings", object: nil)
+                                                self.notificationsManager.setListings(self.userListings)
+                                                self.notificationsManager.startServicePolling()
+                                            }
+                                            
+                                            
                                             
-                                            NSNotificationCenter.defaultCenter().postNotificationName("finished_fetching_listings", object: nil)
                                         })
                                     
                                         
                                         
+                                        
                                     }
                                 })
                                 
@@ -107,6 +122,11 @@ class HomeViewController: UITabBarController {
                             
                             
                         }
+                        /*
+                        dispatch_group_notify(notificationStartGroup, dispatch_get_main_queue(), {
+                            
+
+                        })*/
                         
                         
                         

Vendoo/ServiceNotificationManager.swift

@@ -0,0 +1,101 @@
+//
+//  ServiceNotificationManager.swift
+//  Vendoo
+//
+//  Created by Okechi Onyeje on 8/30/16.
+//  Copyright © 2016 Okechi Onyeje. All rights reserved.
+//
+
+import Foundation
+
+protocol ServiceNotificationManagerDelegate {
+    func listingHasEnded(fbInfo: AnyObject?, ebayInfo: AnyObject?, amazonInfo: AnyObject?, etsyInfo: AnyObject?)
+    func listingHasNewNotifications(fbInfo: AnyObject?, ebayInfo: AnyObject?, amazonInfo: AnyObject?, etsyInfo: AnyObject?)
+}
+
+class ServiceNotificationManager: NSObject {
+    
+    var etsyManager: EtsyRESTAPIManager!
+    var fbGraphManager: FacebookGraphAPIManager!
+    var firebaseManager: FirebaseManager!
+    var ebayGraphManager: EbayWebServiceManager!
+    var userListings: [Listing] = []
+    var timer: NSTimer!
+    var delegate: ServiceNotificationManagerDelegate?
+    
+    override init() {
+        super.init()
+        
+        
+    }
+    
+    func startServicePolling() {
+        timer = NSTimer.scheduledTimerWithTimeInterval(10.0, target: self, selector: #selector(ServiceNotificationManager.pollServices), userInfo: nil, repeats: true)
+    }
+    
+    func stopServicePolling() {
+        timer.invalidate()
+    }
+    
+    func setManagers(fbManager: FacebookGraphAPIManager, fireManager: FirebaseManager, ebayManager: EbayWebServiceManager, etsyManager: EtsyRESTAPIManager){
+        self.fbGraphManager = fbManager
+        self.firebaseManager = fireManager
+        self.ebayGraphManager = ebayManager
+        self.etsyManager = etsyManager
+    }
+    
+    func setListings(listings: [Listing]) {
+        self.userListings = listings
+    }
+    
+    func pollServices(){
+        let notificationGroup = dispatch_group_create()
+        for listing in userListings {
+            dispatch_group_enter(notificationGroup)
+            
+            self.firebaseManager.ref.child("Users/\(self.firebaseManager.user_email)/user_Listings/\(listing.key)").observeSingleEventOfType( .Value, withBlock: {
+                (snapshot) -> Void in
+                
+                let listingDict = snapshot.value as? [String : AnyObject]
+                
+                if !(listingDict!["isListingDraft"] as! Bool) {
+                    if let networksDict = listingDict!["networkIDs"] as? [String : AnyObject] {
+                        let ebayID = (networksDict["ebay"] as? String)
+                        let facebookID = (networksDict["facebook"] as? String)
+                        let etsyID = (networksDict["etsy"] as? Int)
+                        let amazonID = (networksDict["amazon"] as? String)
+
+                        //@TODO: Skeleton for Notfications Manager is set up. Need to implement listing request for each listing to retrieve relevant notifications for user such as if listing has ended
+                        if(ebayID != nil){
+                        
+                        }
+                        if(facebookID != nil){
+                            
+                        }
+                        if(etsyID != nil){
+                            
+                        }
+                        if(amazonID != nil){
+                            
+                        }
+                        //dispatch_group_leave(notificationGroup)
+                    }else {
+                        dispatch_group_leave(notificationGroup)
+                    }
+                    
+                    
+                }else {
+                    dispatch_group_leave(notificationGroup)
+                }
+            })
+        }
+        
+        dispatch_group_notify(notificationGroup, dispatch_get_main_queue(), {
+            self.delegate?.listingHasEnded(nil, ebayInfo: nil, amazonInfo: nil, etsyInfo: nil)
+            self.delegate?.listingHasNewNotifications(nil, ebayInfo: nil, amazonInfo: nil, etsyInfo: nil)
+        })
+    
+    }
+    
+}
+