Add option to remove ROM set.

2025-12-16 19:24:51 +00:00 · 2020-08-24 02:29:07 +01:00
parent 3d87c2e778
commit 90f9152e0f
8 changed files with 249 additions and 1 deletions
--- a/RomRepoMgr/ViewModels/RemoveDatViewModel.cs
+++ b/RomRepoMgr/ViewModels/RemoveDatViewModel.cs
@@ -0,0 +1,114 @@
+/******************************************************************************
+// RomRepoMgr - ROM repository manager
+// ----------------------------------------------------------------------------
+//
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2020 Natalia Portillo
+*******************************************************************************/
+
+using System.IO;
+using System.Threading.Tasks;
+using Avalonia.Threading;
+using JetBrains.Annotations;
+using ReactiveUI;
+using RomRepoMgr.Core;
+using RomRepoMgr.Database;
+using RomRepoMgr.Database.Models;
+using RomRepoMgr.Views;
+
+namespace RomRepoMgr.ViewModels
+{
+    public sealed class RemoveDatViewModel : ViewModelBase
+    {
+        readonly long      _romSetId;
+        readonly RemoveDat _view;
+        string             _statusMessage;
+
+        public RemoveDatViewModel(RemoveDat view, long romSetId)
+        {
+            _view     = view;
+            _romSetId = romSetId;
+        }
+
+        [NotNull]
+        public string Title => "Removing ROM set...";
+
+        public string StatusMessage
+        {
+            get => _statusMessage;
+            set => this.RaiseAndSetIfChanged(ref _statusMessage, value);
+        }
+
+        internal void OnOpened() => Task.Run(() =>
+        {
+            Dispatcher.UIThread.Post(() => StatusMessage = "Retrieving ROM set from database...");
+
+            RomSet romSet = Context.Singleton.RomSets.Find(_romSetId);
+
+            if(romSet == null)
+                return;
+
+            Dispatcher.UIThread.Post(() => StatusMessage = "Removing ROM set from database...");
+
+            Context.Singleton.RomSets.Remove(romSet);
+
+            Dispatcher.UIThread.Post(() => StatusMessage = "Saving changes to database...");
+
+            Context.Singleton.SaveChanges();
+
+            Dispatcher.UIThread.Post(() => StatusMessage = "Removing DAT file from repo...");
+
+            byte[] sha384Bytes = new byte[48];
+            string sha384      = romSet.Sha384;
+
+            for(int i = 0; i < 48; i++)
+            {
+                if(sha384[i * 2] >= 0x30 &&
+                   sha384[i * 2] <= 0x39)
+                    sha384Bytes[i] = (byte)((sha384[i * 2] - 0x30) * 0x10);
+                else if(sha384[i * 2] >= 0x41 &&
+                        sha384[i * 2] <= 0x46)
+                    sha384Bytes[i] = (byte)((sha384[i * 2] - 0x37) * 0x10);
+                else if(sha384[i * 2] >= 0x61 &&
+                        sha384[i * 2] <= 0x66)
+                    sha384Bytes[i] = (byte)((sha384[i * 2] - 0x57) * 0x10);
+
+                if(sha384[(i * 2) + 1] >= 0x30 &&
+                   sha384[(i * 2) + 1] <= 0x39)
+                    sha384Bytes[i] += (byte)(sha384[(i * 2) + 1] - 0x30);
+                else if(sha384[(i * 2) + 1] >= 0x41 &&
+                        sha384[(i * 2) + 1] <= 0x46)
+                    sha384Bytes[i] += (byte)(sha384[(i * 2) + 1] - 0x37);
+                else if(sha384[(i * 2) + 1] >= 0x61 &&
+                        sha384[(i * 2) + 1] <= 0x66)
+                    sha384Bytes[i] += (byte)(sha384[(i * 2) + 1] - 0x57);
+            }
+
+            string datHash32         = Base32.ToBase32String(sha384Bytes);
+            string datFilesPath      = Path.Combine(Settings.Settings.Current.RepositoryPath, "datfiles");
+            string compressedDatPath = Path.Combine(datFilesPath, datHash32 + ".lz");
+
+            if(File.Exists(compressedDatPath))
+                File.Delete(compressedDatPath);
+
+            Dispatcher.UIThread.Post(_view.Close);
+        });
+    }
+}