Started work on #1

TwitchDesktopNotifications/Core/NotifyManager.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TwitchDesktopNotifications.JsonStructure.Helix;
+
+namespace TwitchDesktopNotifications.Core
+{
+    internal class NotifyManager
+    {
+
+        public Boolean shouldNotify(String streamerName)
+        {
+            return notifyAll || !DataStore.GetInstance().Store.SteamersToNotify.Streamers.Contains(streamerName);
+        }
+
+        public void AddStreamerToNotifyList(String streamerName)
+        {
+            DataStore.GetInstance().Store.SteamersToNotify.Streamers.Add(streamerName);
+            DataStore.GetInstance().Save();
+        }
+
+        public void RemoveStreamerToNotifyList(String streamerName)
+        {
+            DataStore.GetInstance().Store.SteamersToNotify.Streamers.Remove(streamerName);
+            DataStore.GetInstance().Save();
+        }
+
+        public void ClearListOfEnabled()
+        {
+            DataStore.GetInstance().Store.SteamersToNotify.Streamers = new List<string>();
+            DataStore.GetInstance().Save();
+        }
+
+        public bool notifyAll
+        {
+            get
+            {
+                return DataStore.GetInstance().Store.SteamersToNotify.notifyAll;
+            }
+            set { 
+                DataStore.GetInstance().Store.SteamersToNotify.notifyAll = value;
+                DataStore.GetInstance().Save();
+            }
+        }
+    }
+}

TwitchDesktopNotifications/Core/TwitchFetcher.cs

@@ -125,9 +125,16 @@ namespace TwitchDesktopNotifications.Core
 
                 currentlyLive = following.Data;
             }catch(System.Exception ex)
+            {
+                if (!ex.Message.Contains("Notification"))
                 {
                     MessageBox.Show("Twitch Connection not authenticated you need to Reconnect it.", "Twitch Notify");
                 }
+                else
+                {
+                    MessageBox.Show("Unable to use Windows Notifications.", "Twitch Notify");
+                }
+            }
 }
 
         public void Refresh()

TwitchDesktopNotifications/JsonStructure/SteamersToNotify.cs

@@ -0,0 +1,13 @@
+using System.Text.Json.Serialization;
+
+namespace TwitchDesktopNotifications.JsonStructure
+{
+    internal class SteamersToNotify
+    {
+        [JsonPropertyName("notifyAll")]
+        public Boolean notifyAll = true;
+
+        [JsonPropertyName("notify")]
+        public List<String> Streamers { get; set; } = new List<String>();
+    }
+}

TwitchDesktopNotifications/JsonStructure/Store.cs

@@ -17,5 +17,8 @@ namespace TwitchDesktopNotifications.JsonStructure
 
         [JsonPropertyName("user_data")]
         public UserData UserData { get; set; }
+
+        [JsonPropertyName("notifications_for")]
+        public SteamersToNotify SteamersToNotify { get; set; };
     }
 }