allow editing of channel images in the web client

1 files changed, 104 insertions, 0 deletions

diff --git a/MediaBrowser.Providers/LiveTv/ChannelProviderFromXml.cs b/MediaBrowser.Providers/LiveTv/ChannelProviderFromXml.cs
new file mode 100644
index 0000000000..b166750b56
--- /dev/null
+++ b/MediaBrowser.Providers/LiveTv/ChannelProviderFromXml.cs
@@ -0,0 +1,104 @@
+using MediaBrowser.Common.IO;
+using MediaBrowser.Controller.Configuration;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.LiveTv;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Logging;
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Providers.LiveTv
+{
+    class ChannelProviderFromXml : BaseMetadataProvider
+    {
+        internal static ChannelProviderFromXml Current { get; private set; }
+        private readonly IFileSystem _fileSystem;
+
+        public ChannelProviderFromXml(ILogManager logManager, IServerConfigurationManager configurationManager, IFileSystem fileSystem)
+            : base(logManager, configurationManager)
+        {
+            _fileSystem = fileSystem;
+            Current = this;
+        }
+
+        /// <summary>
+        /// Supportses the specified item.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
+        public override bool Supports(BaseItem item)
+        {
+            return item is Channel;
+        }
+
+        /// <summary>
+        /// Gets the priority.
+        /// </summary>
+        /// <value>The priority.</value>
+        public override MetadataProviderPriority Priority
+        {
+            get { return MetadataProviderPriority.Second; }
+        }
+
+        private const string XmlFileName = "channel.xml";
+        protected override bool NeedsRefreshBasedOnCompareDate(BaseItem item, BaseProviderInfo providerInfo)
+        {
+            var xml = item.ResolveArgs.GetMetaFileByPath(Path.Combine(item.MetaLocation, XmlFileName));
+
+            if (xml == null)
+            {
+                return false;
+            }
+
+            return _fileSystem.GetLastWriteTimeUtc(xml) > providerInfo.LastRefreshed;
+        }
+
+        /// <summary>
+        /// Fetches metadata and returns true or false indicating if any work that requires persistence was done
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="force">if set to <c>true</c> [force].</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task{System.Boolean}.</returns>
+        public override Task<bool> FetchAsync(BaseItem item, bool force, CancellationToken cancellationToken)
+        {
+            return Fetch(item, cancellationToken);
+        }
+
+        /// <summary>
+        /// Fetches the specified item.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
+        private async Task<bool> Fetch(BaseItem item, CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            var metadataFile = item.ResolveArgs.GetMetaFileByPath(Path.Combine(item.MetaLocation, XmlFileName));
+
+            if (metadataFile != null)
+            {
+                var path = metadataFile.FullName;
+
+                await XmlParsingResourcePool.WaitAsync(cancellationToken).ConfigureAwait(false);
+
+                try
+                {
+                    new BaseItemXmlParser<Channel>(Logger).Fetch((Channel)item, path, cancellationToken);
+                }
+                finally
+                {
+                    XmlParsingResourcePool.Release();
+                }
+
+                SetLastRefreshed(item, DateTime.UtcNow);
+                return true;
+            }
+
+            return false;
+        }
+    }
+}