add cinema mode feature

MediaBrowser.Server.Implementations/Channels/ChannelPostScanTask.cs

@@ -0,0 +1,136 @@
+using System.Collections.Generic;
+using MediaBrowser.Common.Progress;
+using MediaBrowser.Controller.Channels;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Model.Channels;
+using MediaBrowser.Model.Logging;
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Server.Implementations.Channels
+{
+    public class ChannelPostScanTask : ILibraryPostScanTask
+    {
+        private readonly IChannelManager _channelManager;
+        private readonly IUserManager _userManager;
+        private readonly ILogger _logger;
+
+        public ChannelPostScanTask(IChannelManager channelManager, IUserManager userManager, ILogger logger)
+        {
+            _channelManager = channelManager;
+            _userManager = userManager;
+            _logger = logger;
+        }
+
+        public async Task Run(IProgress<double> progress, CancellationToken cancellationToken)
+        {
+            var users = _userManager.Users
+                .Select(i => i.Id.ToString("N"))
+                .ToList();
+
+            var numComplete = 0;
+
+            foreach (var user in users)
+            {
+                double percentPerUser = 1;
+                percentPerUser /= users.Count;
+                var startingPercent = numComplete * percentPerUser * 100;
+
+                var innerProgress = new ActionableProgress<double>();
+                innerProgress.RegisterAction(p => progress.Report(startingPercent + (percentPerUser * p)));
+
+                await DownloadContent(user, cancellationToken, innerProgress).ConfigureAwait(false);
+
+                numComplete++;
+                double percent = numComplete;
+                percent /= users.Count;
+                progress.Report(percent * 100);
+            }
+
+            progress.Report(100);
+        }
+
+        private async Task DownloadContent(string user, CancellationToken cancellationToken, IProgress<double> progress)
+        {
+            var channels = await _channelManager.GetChannelsInternal(new ChannelQuery
+            {
+                UserId = user
+
+            }, cancellationToken);
+
+            var numComplete = 0;
+
+            foreach (var channel in channels.Items)
+            {
+                try
+                {
+                    await GetAllItems(user, channel.Id.ToString("N"), null, false, cancellationToken).ConfigureAwait(false);
+                }
+                catch (Exception ex)
+                {
+                    _logger.ErrorException("Error getting channel content", ex);
+                }
+
+                numComplete++;
+                double percent = numComplete;
+                percent /= channels.Items.Length;
+                progress.Report(percent * 100);
+            }
+
+            progress.Report(100);
+
+        }
+
+        private async Task GetAllItems(string user, string channelId, string folderId, bool recursive, CancellationToken cancellationToken)
+        {
+            var folderItems = new List<string>();
+
+            var result = await _channelManager.GetChannelItemsInternal(new ChannelItemQuery
+            {
+                ChannelId = channelId,
+                UserId = user,
+                FolderId = folderId
+
+            }, cancellationToken);
+
+            folderItems.AddRange(result.Items.Where(i => i.IsFolder).Select(i => i.Id.ToString("N")));
+
+            var totalRetrieved = result.Items.Length;
+            var totalCount = result.TotalRecordCount;
+
+            while (totalRetrieved < totalCount)
+            {
+                result = await _channelManager.GetChannelItemsInternal(new ChannelItemQuery
+                {
+                    ChannelId = channelId,
+                    UserId = user,
+                    StartIndex = totalRetrieved,
+                    FolderId = folderId
+
+                }, cancellationToken);
+
+                folderItems.AddRange(result.Items.Where(i => i.IsFolder).Select(i => i.Id.ToString("N")));
+                
+                totalRetrieved += result.Items.Length;
+                totalCount = result.TotalRecordCount;
+            }
+
+            if (recursive)
+            {
+                foreach (var folder in folderItems)
+                {
+                    try
+                    {
+                        await GetAllItems(user, channelId, folder, false, cancellationToken).ConfigureAwait(false);
+                    }
+                    catch (Exception ex)
+                    {
+                        _logger.ErrorException("Error getting channel content", ex);
+                    }
+                }
+            }
+        }
+    }
+}