Make MusicBrainz base url configurable

Emby.Server.Implementations/ConfigurationOptions.cs

@@ -6,7 +6,8 @@ namespace Emby.Server.Implementations
     {
         public static readonly Dictionary<string, string> Configuration = new Dictionary<string, string>
         {
-            {"HttpListenerHost:DefaultRedirectPath", "web/index.html"}
+            {"HttpListenerHost:DefaultRedirectPath", "web/index.html"},
+            {"MusicBrainz:BaseUrl", "https://www.musicbrainz.org"}
         };
     }
 }

MediaBrowser.Providers/MediaBrowser.Providers.csproj

@@ -11,6 +11,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="2.2.0" />
     <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="2.2.0" />
     <PackageReference Include="OptimizedPriorityQueue" Version="4.2.0" />
     <PackageReference Include="PlaylistsNET" Version="1.0.2" />

MediaBrowser.Providers/Music/MusicBrainzAlbumProvider.cs

@@ -16,6 +16,7 @@ using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Providers;
 using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Xml;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Providers.Music
@@ -30,15 +31,22 @@ namespace MediaBrowser.Providers.Music
         private readonly IJsonSerializer _json;
         private readonly IXmlReaderSettingsFactory _xmlSettings;
 
-        public static string MusicBrainzBaseUrl = "https://www.musicbrainz.org";
+        public readonly string MusicBrainzBaseUrl;
 
-        public MusicBrainzAlbumProvider(IHttpClient httpClient, IApplicationHost appHost, ILogger logger, IJsonSerializer json, IXmlReaderSettingsFactory xmlSettings)
+        public MusicBrainzAlbumProvider(
+            IHttpClient httpClient,
+            IApplicationHost appHost,
+            ILogger logger,
+            IJsonSerializer json,
+            IXmlReaderSettingsFactory xmlSettings,
+            IConfiguration configuration)
         {
             _httpClient = httpClient;
             _appHost = appHost;
             _logger = logger;
             _json = json;
             _xmlSettings = xmlSettings;
+            MusicBrainzBaseUrl = configuration["MusicBrainz:BaseUrl"];
             Current = this;
         }