Port only MVVM work and related fixes

RedBookPlayer.GUI/ViewModels/SettingsViewModel.cs

@@ -0,0 +1,284 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reactive;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Avalonia.Input;
+using ReactiveUI;
+using RedBookPlayer.Models;
+
+namespace RedBookPlayer.GUI.ViewModels
+{
+    public class SettingsViewModel : ReactiveObject
+    {
+        #region Player Settings
+
+        /// <summary>
+        /// List of all data playback values
+        /// </summary>
+        [JsonIgnore]
+        public List<DataPlayback> DataPlaybackValues => GenerateDataPlaybackList();
+
+        /// <summary>
+        /// List of all themes
+        /// </summary>
+        [JsonIgnore]
+        public List<string> ThemeValues => GenerateThemeList();
+
+        /// <summary>
+        /// Indicates if discs should start playing on load
+        /// </summary>
+        public bool AutoPlay { get; set; } = false;
+
+        /// <summary>
+        /// Indicates if an index change can trigger a track change
+        /// </summary>
+        public bool IndexButtonChangeTrack { get; set; } = false;
+
+        /// <summary>
+        /// Indicates if hidden tracks should be played
+        /// </summary>
+        /// <remarks>
+        /// Hidden tracks can be one of the following:
+        /// - TrackSequence == 0
+        /// - Larget pregap of track 1 (> 150 sectors)
+        /// </remarks>
+        public bool PlayHiddenTracks { get; set; } = false;
+
+        /// <summary>
+        /// Generate a TOC if the disc is missing one
+        /// </summary>
+        public bool GenerateMissingTOC { get; set; } = true;
+
+        /// <summary>
+        /// Indicates how to deal with data tracks
+        /// </summary>
+        public DataPlayback DataPlayback { get; set; } = DataPlayback.Skip;
+
+        /// <summary>
+        /// Indicates the default playback volume
+        /// </summary>
+        public int Volume
+        {
+            get => _volume;
+            private set
+            {
+                int tempValue;
+                if(value > 100)
+                    tempValue = 100;
+                else if(value < 0)
+                    tempValue = 0;
+                else
+                    tempValue = value;
+
+                this.RaiseAndSetIfChanged(ref _volume, tempValue);
+            }
+        }
+
+        /// <summary>
+        /// Indicates the currently selected theme
+        /// </summary>
+        public string SelectedTheme { get; set; } = "Default";
+
+        #endregion
+
+        #region Key Mappings
+
+        /// <summary>
+        /// List of all keyboard keys
+        /// </summary>
+        [JsonIgnore]
+        public List<Key> KeyboardList => GenerateKeyList();
+
+        /// <summary>
+        /// Key assigned to open settings
+        /// </summary>
+        public Key OpenSettingsKey { get; set; } = Key.F1;
+
+        /// <summary>
+        /// Key assigned to load a new image
+        /// </summary>
+        public Key LoadImageKey { get; set; } = Key.F2;
+
+        /// <summary>
+        /// Key assigned to toggle play and pause
+        /// </summary>
+        public Key TogglePlaybackKey { get; set; } = Key.Space;
+
+        /// <summary>
+        /// Key assigned to stop playback
+        /// </summary>
+        public Key StopPlaybackKey { get; set; } = Key.Escape;
+
+        /// <summary>
+        /// Key assigned to eject the disc
+        /// </summary>
+        public Key EjectKey { get; set; } = Key.OemTilde;
+
+        /// <summary>
+        /// Key assigned to move to the next track
+        /// </summary>
+        public Key NextTrackKey { get; set; } = Key.Right;
+
+        /// <summary>
+        /// Key assigned to move to the previous track
+        /// </summary>
+        public Key PreviousTrackKey { get; set; } = Key.Left;
+
+        /// <summary>
+        /// Key assigned to move to the next index
+        /// </summary>
+        public Key NextIndexKey { get; set; } = Key.OemCloseBrackets;
+
+        /// <summary>
+        /// Key assigned to move to the previous index
+        /// </summary>
+        public Key PreviousIndexKey { get; set; } = Key.OemOpenBrackets;
+
+        /// <summary>
+        /// Key assigned to fast forward playback
+        /// </summary>
+        public Key FastForwardPlaybackKey { get; set; } = Key.OemPeriod;
+
+        /// <summary>
+        /// Key assigned to rewind playback
+        /// </summary>
+        public Key RewindPlaybackKey { get; set; } = Key.OemComma;
+
+        /// <summary>
+        /// Key assigned to raise volume
+        /// </summary>
+        public Key VolumeUpKey { get; set; } = Key.Add;
+
+        /// <summary>
+        /// Key assigned to lower volume
+        /// </summary>
+        public Key VolumeDownKey { get; set; } = Key.Subtract;
+
+        /// <summary>
+        /// Key assigned to toggle mute
+        /// </summary>
+        public Key ToggleMuteKey { get; set; } = Key.M;
+
+        /// <summary>
+        /// Key assigned to toggle de-emphasis
+        /// </summary>
+        public Key ToggleDeEmphasisKey { get; set; } = Key.E;
+
+        #endregion
+
+        #region Commands
+
+        /// <summary>
+        /// Command for applying settings
+        /// </summary>
+        public ReactiveCommand<Unit, Unit> ApplySettingsCommand { get; }
+
+        #endregion
+
+        /// <summary>
+        /// Path to the settings file
+        /// </summary>
+        private string _filePath;
+
+        /// <summary>
+        /// Internal value for the volume
+        /// </summary>
+        private int _volume = 100;
+
+        public SettingsViewModel() : this(null) { }
+
+        public SettingsViewModel(string filePath)
+        {
+            _filePath = filePath;
+
+            ApplySettingsCommand = ReactiveCommand.Create(ExecuteApplySettings);
+        }
+
+        /// <summary>
+        /// Load settings from a file
+        /// </summary>
+        /// <param name="filePath">Path to the settings JSON file</param>
+        /// <returns>Settings derived from the input file, if possible</returns>
+        public static SettingsViewModel Load(string filePath)
+        {
+            if(File.Exists(filePath))
+            {
+                try
+                {
+                    SettingsViewModel settings = JsonSerializer.Deserialize<SettingsViewModel>(File.ReadAllText(filePath));
+                    settings._filePath = filePath;
+
+                    return settings;
+                }
+                catch(JsonException)
+                {
+                    Console.WriteLine("Couldn't parse settings, reverting to default");
+
+                    return new SettingsViewModel(filePath);
+                }
+            }
+
+            return new SettingsViewModel(filePath);
+        }
+
+        /// <summary>
+        /// Apply settings from the UI
+        /// </summary>
+        public void ExecuteApplySettings()
+        {
+            if(!string.IsNullOrWhiteSpace(SelectedTheme))
+                App.PlayerView?.ViewModel?.ApplyTheme(SelectedTheme);
+
+            var options = new JsonSerializerOptions
+            {
+                WriteIndented = true
+            };
+
+            string json = JsonSerializer.Serialize(this, options);
+            File.WriteAllText(_filePath, json);
+        }
+
+        #region Generation
+
+        /// <summary>
+        /// Generate the list of DataPlayback values
+        /// </summary>
+        private List<DataPlayback> GenerateDataPlaybackList() => Enum.GetValues(typeof(DataPlayback)).Cast<DataPlayback>().ToList();
+
+        /// <summary>
+        /// Generate the list of Key values
+        /// </summary>
+        private List<Key> GenerateKeyList() => Enum.GetValues(typeof(Key)).Cast<Key>().ToList();
+
+        /// <summary>
+        /// Generate the list of valid themes
+        /// </summary>
+        private List<string> GenerateThemeList()
+        {
+            // Create a list of all found themes
+            List<string> items = new List<string>();
+
+            // Ensure the theme directory exists
+            if(!Directory.Exists("themes/"))
+                Directory.CreateDirectory("themes/");
+
+            // Add all theme directories if they're valid
+            foreach(string dir in Directory.EnumerateDirectories("themes/"))
+            {
+                string themeName = dir.Split('/')[1];
+
+                if(!File.Exists($"themes/{themeName}/view.xaml"))
+                    continue;
+
+                items.Add(themeName);
+            }
+
+            return items;
+        }
+
+        #endregion
+    }
+}