1.0-dev17 (Subscription page created)

2022-05-05 15:14:26 +02:00
parent e23258a638
commit 7a57fb65f3
14 changed files with 1043 additions and 0 deletions
--- a/VDownload.Core/Services/SubscriptionsCollectionManagement.cs
+++ b/VDownload.Core/Services/SubscriptionsCollectionManagement.cs
@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.Serialization.Formatters.Binary;
+using System.Text;
+using System.Threading.Tasks;
+using VDownload.Core.Exceptions;
+using Windows.Storage;
+
+namespace VDownload.Core.Services
+{
+    public static class SubscriptionsCollectionManagement
+    {
+        #region CONSTANTS
+
+        private static readonly StorageFolder SubscriptionFolderLocation = ApplicationData.Current.LocalFolder;
+        private static readonly string SubscriptionsFolderName = "Subscriptions";
+        private static readonly string SubscriptionFileExtension = "vsub";
+
+        #endregion
+
+
+
+        #region PUBLIC METHODS
+
+        public static async Task<(Subscription Subscription, StorageFile SubscriptionFile)[]> GetSubscriptionsAsync()
+        {
+            List<(Subscription Subscription, StorageFile SubscriptionFile)> subscriptions = new List<(Subscription Subscription,StorageFile SubscriptionFile)> ();
+            StorageFolder subscriptionsFolder = await ApplicationData.Current.LocalFolder.CreateFolderAsync(SubscriptionsFolderName, CreationCollisionOption.OpenIfExists);
+            BinaryFormatter formatter = new BinaryFormatter();
+            foreach (StorageFile file in await subscriptionsFolder.GetFilesAsync())
+            {
+                if (file.Name.EndsWith(SubscriptionFileExtension))
+                {
+                    Stream fileStream = await file.OpenStreamForReadAsync();
+                    Subscription subscription = (Subscription)formatter.Deserialize(fileStream);
+                    subscriptions.Add((subscription, file));
+                }
+            }
+            return subscriptions.ToArray();
+        }
+
+        public static async Task<StorageFile> CreateSubscriptionFileAsync(Subscription subscription)
+        {
+            StorageFolder subscriptionsFolder = await ApplicationData.Current.LocalFolder.CreateFolderAsync(SubscriptionsFolderName, CreationCollisionOption.OpenIfExists);
+            try
+            {
+                StorageFile subscriptionFile = await subscriptionsFolder.CreateFileAsync($"{(int)subscription.Playlist.Source}-{subscription.Playlist.ID}.{SubscriptionFileExtension}", CreationCollisionOption.FailIfExists);
+                BinaryFormatter formatter = new BinaryFormatter();
+                Stream subscriptionFileStream = await subscriptionFile.OpenStreamForWriteAsync();
+                formatter.Serialize(subscriptionFileStream, subscription);
+                return subscriptionFile;
+            }
+            catch (Exception ex)
+            {
+                if ((uint)ex.HResult == 0x800700B7)
+                {
+                    throw new SubscriptionExistsException($"Subscription with id \"{(int)subscription.Playlist.Source}-{subscription.Playlist.ID}\" already exists");
+                }
+                else
+                {
+                    throw;
+                }
+            }
+        }
+
+        public static async Task UpdateSubscriptionFileAsync(Subscription subscription, StorageFile subscriptionFile)
+        {
+            BinaryFormatter formatter = new BinaryFormatter();
+            Stream subscriptionFileStream = await subscriptionFile.OpenStreamForWriteAsync();
+            formatter.Serialize(subscriptionFileStream, subscription);
+        }
+
+        public static async Task DeleteSubscriptionFileAsync(StorageFile subscriptionFile) => await subscriptionFile.DeleteAsync(StorageDeleteOption.PermanentDelete);
+
+        #endregion
+    }
+}