Add option to remove ROM set.

RomRepoMgr.Core/Models/RomSetModel.cs

@@ -42,5 +42,6 @@ namespace RomRepoMgr.Core.Models
         public long   TotalRoms          { get; set; }
         public long   HaveRoms           { get; set; }
         public long   MissRoms           { get; set; }
+        public long   Id                 { get; set; }
     }
 }

RomRepoMgr.Core/Workers/DatImporter.cs

@@ -464,6 +464,7 @@ namespace RomRepoMgr.Core.Workers
                 {
                     RomSet = new RomSetModel
                     {
+                        Id                 = romSet.Id,
                         Author             = romSet.Author,
                         Comment            = romSet.Comment,
                         Date               = romSet.Date,

RomRepoMgr/ViewModels/MainWindowViewModel.cs

@@ -30,6 +30,8 @@ using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Threading;
+using MessageBox.Avalonia;
+using MessageBox.Avalonia.Enums;
 using ReactiveUI;
 using RomRepoMgr.Core.EventArgs;
 using RomRepoMgr.Core.Models;
@@ -41,6 +43,8 @@ namespace RomRepoMgr.ViewModels
     {
         readonly MainWindow _view;
 
+        RomSetModel _selectedRomSet;
+
         public MainWindowViewModel(MainWindow view, List<RomSetModel> romSets)
         {
             _view                  = view;
@@ -50,6 +54,7 @@ namespace RomRepoMgr.ViewModels
             ImportDatCommand       = ReactiveCommand.Create(ExecuteImportDatCommand);
             ImportDatFolderCommand = ReactiveCommand.Create(ExecuteImportDatFolderCommand);
             ImportRomFolderCommand = ReactiveCommand.Create(ExecuteImportRomFolderCommand);
+            DeleteRomSetCommand    = ReactiveCommand.Create(ExecuteDeleteRomSetCommand);
             RomSets                = new ObservableCollection<RomSetModel>(romSets);
         }
 
@@ -79,6 +84,13 @@ namespace RomRepoMgr.ViewModels
         public ReactiveCommand<Unit, Unit> ImportDatCommand       { get; }
         public ReactiveCommand<Unit, Unit> ImportDatFolderCommand { get; }
         public ReactiveCommand<Unit, Unit> ImportRomFolderCommand { get; }
+        public ReactiveCommand<Unit, Unit> DeleteRomSetCommand    { get; }
+
+        public RomSetModel SelectedRomSet
+        {
+            get => _selectedRomSet;
+            set => this.RaiseAndSetIfChanged(ref _selectedRomSet, value);
+        }
 
         internal async void ExecuteSettingsCommand()
         {
@@ -177,5 +189,29 @@ namespace RomRepoMgr.ViewModels
             dialog.DataContext = importRomFolderViewModel;
             await dialog.ShowDialog(_view);
         }
+
+        async void ExecuteDeleteRomSetCommand()
+        {
+            if(SelectedRomSet == null)
+                return;
+
+            ButtonResult result = await MessageBoxManager.GetMessageBoxStandardWindow("Delete ROM set",
+                                                              string.
+                                                                  Format("Are you sure you want to delete the ROM set {0}?",
+                                                                         SelectedRomSet.Name), ButtonEnum.YesNo,
+                                                              Icon.Database).
+                                                          ShowDialog(_view);
+
+            if(result == ButtonResult.No)
+                return;
+
+            var dialog             = new RemoveDat();
+            var removeDatViewModel = new RemoveDatViewModel(dialog, SelectedRomSet.Id);
+            dialog.DataContext = removeDatViewModel;
+            await dialog.ShowDialog(_view);
+
+            RomSets.Remove(SelectedRomSet);
+            SelectedRomSet = null;
+        }
     }
 }

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);
+        });
+    }
+}

RomRepoMgr/ViewModels/SplashWindowViewModel.cs

@@ -370,6 +370,7 @@ namespace RomRepoMgr.ViewModels
                                           ThenBy(r => r.Date).ThenBy(r => r.Description).ThenBy(r => r.Comment).
                                           ThenBy(r => r.Filename).Select(r => new RomSetModel
                                           {
+                                              Id            = r.Id,
                                               Author        = r.Author,
                                               Comment       = r.Comment,
                                               Date          = r.Date,

RomRepoMgr/Views/MainWindow.xaml

@@ -19,6 +19,10 @@
             <MenuItem Header="_ROMs">
                 <MenuItem Header="_Import folder" Command="{Binding ImportRomFolderCommand}" /> <Separator />
             </MenuItem>
+            <MenuItem Header="ROM _sets"
+                      IsEnabled="{Binding SelectedRomSet, Converter={x:Static ObjectConverters.IsNotNull}}">
+                <MenuItem Header="_Delete" Command="{Binding DeleteRomSetCommand}" /> <Separator />
+            </MenuItem>
             <MenuItem Header="_Help">
                 <MenuItem Header="_About" Name="AboutMenuItem" IsVisible="{Binding !NativeMenuSupported}"
                           Command="{Binding AboutCommand}" />
@@ -29,7 +33,8 @@
                 <TabItem.Header>
                     <TextBlock Text="{Binding RomSetLabel}" />
                 </TabItem.Header>
-                <DataGrid Items="{Binding RomSets}" HorizontalScrollBarVisibility="Visible">
+                <DataGrid Items="{Binding RomSets}" HorizontalScrollBarVisibility="Visible"
+                          SelectedItem="{Binding SelectedRomSet, Mode=TwoWay}">
                     <DataGrid.Columns>
                         <DataGridTextColumn Binding="{Binding Name}" Width="Auto" IsReadOnly="True">
                             <DataGridTextColumn.Header>

RomRepoMgr/Views/RemoveDat.xaml

@@ -0,0 +1,45 @@
+<!--
+// /***************************************************************************
+// 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
+// ****************************************************************************/
+-->
+<Window xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:vm="clr-namespace:RomRepoMgr.ViewModels;assembly=RomRepoMgr" mc:Ignorable="d" d:DesignWidth="800"
+        d:DesignHeight="450" Width="480" Height="90" x:Class="RomRepoMgr.Views.RemoveDat"
+        Icon="/Assets/avalonia-logo.ico" CanResize="False" Title="{Binding Title}" WindowStartupLocation="CenterOwner">
+    <Design.DataContext>
+        <vm:RemoveDatViewModel />
+    </Design.DataContext>
+    <Border Padding="15">
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto" /> <RowDefinition Height="auto" />
+            </Grid.RowDefinitions>
+            <TextBlock Grid.Row="0" Text="{Binding StatusMessage}" HorizontalAlignment="Center" />
+            <ProgressBar Grid.Row="1" IsIndeterminate="True" HorizontalAlignment="Stretch" />
+        </Grid>
+    </Border>
+</Window>

RomRepoMgr/Views/RemoveDat.xaml.cs

@@ -0,0 +1,45 @@
+/******************************************************************************
+// 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;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using RomRepoMgr.ViewModels;
+
+namespace RomRepoMgr.Views
+{
+    public sealed class RemoveDat : Window
+    {
+        public RemoveDat() => InitializeComponent();
+
+        void InitializeComponent() => AvaloniaXamlLoader.Load(this);
+
+        protected override void OnOpened(EventArgs e)
+        {
+            base.OnOpened(e);
+            (DataContext as RemoveDatViewModel)?.OnOpened();
+        }
+    }
+}