Shuffle system

2022-11-13 15:58:30 +01:00
parent 2f80af70ba
commit b559ea01ab
10 changed files with 808 additions and 74 deletions
--- a/Handlers/ShuffleHandler.cs
+++ b/Handlers/ShuffleHandler.cs
@ -0,0 +1,108 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows;
+using MpcNET;
+using MpcNET.Commands.Database;
+using MpcNET.Commands.Playback;
+using MpcNET.Commands.Queue;
+using MpcNET.Commands.Reflection;
+using MpcNET.Tags;
+using MpcNET.Types;
+using MpcNET.Types.Filters;
+
+namespace unison
+{
+    class ShuffleHandler
+    {
+        private readonly MPDHandler _mpd;
+        public int AddedSongs = 0;
+
+        public List<string> SongList { get; }
+
+        public ShuffleHandler()
+        {
+            SongList = new();
+            _mpd = (MPDHandler)Application.Current.Properties["mpd"];
+        }
+
+        public async Task GetSongsFromFilter(List<IFilter> filter, CancellationToken token)
+        {
+            if (token.IsCancellationRequested)
+                return;
+
+            SongList.Clear();
+
+            int song = _mpd.GetStats().Songs;
+            IEnumerable<IMpdFile> response = await _mpd.SafelySendCommandAsync(new SearchCommand(filter, 0, song + 1));
+            foreach (IMpdFile file in response)
+                SongList.Add(file.Path);
+        }
+
+        public async Task AddToQueueRandom(int SongNumber, CancellationToken token)
+        {
+            if (token.IsCancellationRequested)
+                return;
+
+            int AddedSongs = 0;
+
+            var commandList = new CommandList();
+            int songTotal = _mpd.GetStats().Songs;
+
+            for (int i = 0; i < SongNumber; i++)
+            {
+                int song = new Random().Next(0, songTotal - 1);
+                commandList.Add(new SearchAddCommand(new FilterTag(MpdTags.Title, "", FilterOperator.Contains), song, song + 1));
+                AddedSongs++;
+
+                // play if stopped or unknown state (no queue managing at the moment, so mandatory)
+                if (i == 0 && (_mpd.GetStatus().State != MpdState.Play && _mpd.GetStatus().State != MpdState.Pause))
+                    commandList.Add(new PlayCommand(0));
+            }
+
+            await _mpd.SafelySendCommandAsync(commandList);
+        }
+
+        public async Task AddToQueueFilter(int SongNumber, CancellationToken token)
+        {
+            if (token.IsCancellationRequested)
+                return;
+
+            int AddedSongs = 0;
+
+            // more (or equal) requested songs than available => add everything
+            if (SongNumber >= SongList.Count)
+            {
+                var commandList = new CommandList();
+                foreach (string path in SongList)
+                {
+                    commandList.Add(new AddCommand(path));
+                    AddedSongs++;
+                }
+
+                await _mpd.SafelySendCommandAsync(commandList);
+            }
+            // more available songs than requested =>
+            // we add unique indexes until we reach the requested amount
+            else
+            {
+                HashSet<int> SongIndex = new();
+                while (SongIndex.Count < SongNumber)
+                {
+                    int MaxIndex = new Random().Next(0, SongList.Count - 1);
+                    SongIndex.Add(MaxIndex);
+                }
+
+                var commandList = new CommandList();
+                foreach (int index in SongIndex)
+                {
+                    commandList.Add(new AddCommand(SongList[index]));
+                    AddedSongs++;
+                }
+
+                await _mpd.SafelySendCommandAsync(commandList);
+            }
+        }
+    }
+}