Mayor code cleanup

Add Argument*Exceptions now use proper nameof operators.

Added exception messages to quite a few Argument*Exceptions.

Fixed rethorwing to be proper syntax.

Added a ton of null checkes. (This is only a start, there are about 500 places that need proper null handling)

Added some TODOs to log certain exceptions.

Fix sln again.

Fixed all AssemblyInfo's and added proper copyright (where I could find them)

We live in *current year*.

Fixed the use of braces.

Fixed a ton of properties, and made a fair amount of functions static that should be and can be static.

Made more Methods that should be static static.

You can now use static to find bad functions!

Removed unused variable. And added one more proper XML comment.

7 files changed, 68 insertions, 114 deletions

diff --git a/Emby.Server.Implementations/Data/BaseSqliteRepository.cs b/Emby.Server.Implementations/Data/BaseSqliteRepository.cs
index 59776c373..c714ba91b 100644
--- a/Emby.Server.Implementations/Data/BaseSqliteRepository.cs
+++ b/Emby.Server.Implementations/Data/BaseSqliteRepository.cs
@@ -24,15 +24,9 @@ namespace Emby.Server.Implementations.Data
             WriteLock = new ReaderWriterLockSlim(LockRecursionPolicy.NoRecursion);
         }
 
-        protected TransactionMode TransactionMode
-        {
-            get { return TransactionMode.Deferred; }
-        }
+        protected TransactionMode TransactionMode => TransactionMode.Deferred;
 
-        protected TransactionMode ReadTransactionMode
-        {
-            get { return TransactionMode.Deferred; }
-        }
+        protected TransactionMode ReadTransactionMode => TransactionMode.Deferred;
 
         internal static int ThreadSafeMode { get; set; }
 
@@ -58,10 +52,7 @@ namespace Emby.Server.Implementations.Data
         private string _defaultWal;
         protected ManagedConnection _connection;
 
-        protected virtual bool EnableSingleConnection
-        {
-            get { return true; }
-        }
+        protected virtual bool EnableSingleConnection => true;
 
         protected ManagedConnection CreateConnection(bool isReadOnly = false)
         {
@@ -238,21 +229,9 @@ namespace Emby.Server.Implementations.Data
             Logger.LogInformation("PRAGMA synchronous=" + db.Query("PRAGMA synchronous").SelectScalarString().First());
         }
 
-        protected virtual bool EnableTempStoreMemory
-        {
-            get
-            {
-                return false;
-            }
-        }
+        protected virtual bool EnableTempStoreMemory => false;
 
-        protected virtual int? CacheSize
-        {
-            get
-            {
-                return null;
-            }
-        }
+        protected virtual int? CacheSize => null;
 
         internal static void CheckOk(int rc)
         {
@@ -276,7 +255,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (_disposed)
             {
-                throw new ObjectDisposedException(GetType().Name + " has been disposed and cannot be accessed.");
+                throw new ObjectDisposedException(GetType().Name ,"Object has been disposed and cannot be accessed.");
             }
         }
 
diff --git a/Emby.Server.Implementations/Data/SqliteDisplayPreferencesRepository.cs b/Emby.Server.Implementations/Data/SqliteDisplayPreferencesRepository.cs
index 00e1956cf..49d8f79a2 100644
--- a/Emby.Server.Implementations/Data/SqliteDisplayPreferencesRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteDisplayPreferencesRepository.cs
@@ -32,13 +32,7 @@ namespace Emby.Server.Implementations.Data
         /// Gets the name of the repository
         /// </summary>
         /// <value>The name.</value>
-        public string Name
-        {
-            get
-            {
-                return "SQLite";
-            }
-        }
+        public string Name => "SQLite";
 
         /// <summary>
         /// The _json serializer
@@ -94,11 +88,11 @@ namespace Emby.Server.Implementations.Data
         {
             if (displayPreferences == null)
             {
-                throw new ArgumentNullException("displayPreferences");
+                throw new ArgumentNullException(nameof(displayPreferences));
             }
             if (string.IsNullOrEmpty(displayPreferences.Id))
             {
-                throw new ArgumentNullException("displayPreferences.Id");
+                throw new ArgumentNullException(nameof(displayPreferences.Id));
             }
 
             cancellationToken.ThrowIfCancellationRequested();
@@ -142,7 +136,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (displayPreferences == null)
             {
-                throw new ArgumentNullException("displayPreferences");
+                throw new ArgumentNullException(nameof(displayPreferences));
             }
 
             cancellationToken.ThrowIfCancellationRequested();
@@ -174,7 +168,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (string.IsNullOrEmpty(displayPreferencesId))
             {
-                throw new ArgumentNullException("displayPreferencesId");
+                throw new ArgumentNullException(nameof(displayPreferencesId));
             }
 
             var guidId = displayPreferencesId.GetMD5();
diff --git a/Emby.Server.Implementations/Data/SqliteExtensions.cs b/Emby.Server.Implementations/Data/SqliteExtensions.cs
index a755c65f4..d9b2db56e 100644
--- a/Emby.Server.Implementations/Data/SqliteExtensions.cs
+++ b/Emby.Server.Implementations/Data/SqliteExtensions.cs
@@ -14,7 +14,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (queries == null)
             {
-                throw new ArgumentNullException("queries");
+                throw new ArgumentNullException(nameof(queries));
             }
 
             connection.RunInTransaction(conn =>
@@ -134,7 +134,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (obj == null)
             {
-                throw new ArgumentNullException("obj");
+                throw new ArgumentNullException(nameof(obj));
             }
 
             using (var stream = new MemoryStream())
diff --git a/Emby.Server.Implementations/Data/SqliteItemRepository.cs b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
index 0f9770e8f..96b650ee0 100644
--- a/Emby.Server.Implementations/Data/SqliteItemRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
@@ -82,11 +82,11 @@ namespace Emby.Server.Implementations.Data
         {
             if (config == null)
             {
-                throw new ArgumentNullException("config");
+                throw new ArgumentNullException(nameof(config));
             }
             if (jsonSerializer == null)
             {
-                throw new ArgumentNullException("jsonSerializer");
+                throw new ArgumentNullException(nameof(jsonSerializer));
             }
 
             _appHost = appHost;
@@ -455,7 +455,7 @@ namespace Emby.Server.Implementations.Data
             "ColorTransfer"
         };
 
-        private string GetSaveItemCommandText()
+        private static string GetSaveItemCommandText()
         {
             var saveColumns = new List<string>
             {
@@ -558,7 +558,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (item == null)
             {
-                throw new ArgumentNullException("item");
+                throw new ArgumentNullException(nameof(item));
             }
 
             SaveItems(new List<BaseItem> { item }, cancellationToken);
@@ -568,7 +568,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (item == null)
             {
-                throw new ArgumentNullException("item");
+                throw new ArgumentNullException(nameof(item));
             }
 
             CheckDisposed();
@@ -605,7 +605,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (items == null)
             {
-                throw new ArgumentNullException("items");
+                throw new ArgumentNullException(nameof(items));
             }
 
             cancellationToken.ThrowIfCancellationRequested();
@@ -1070,7 +1070,7 @@ namespace Emby.Server.Implementations.Data
             saveItemStatement.MoveNext();
         }
 
-        private string SerializeProviderIds(BaseItem item)
+        private static string SerializeProviderIds(BaseItem item)
         {
             // Ideally we shouldn't need this IsNullOrWhiteSpace check but we're seeing some cases of bad data slip through
             var ids = item.ProviderIds
@@ -1085,7 +1085,7 @@ namespace Emby.Server.Implementations.Data
             return string.Join("|", ids.Select(i => i.Key + "=" + i.Value).ToArray());
         }
 
-        private void DeserializeProviderIds(string value, BaseItem item)
+        private static void DeserializeProviderIds(string value, BaseItem item)
         {
             if (string.IsNullOrWhiteSpace(value))
             {
@@ -1226,7 +1226,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (id.Equals(Guid.Empty))
             {
-                throw new ArgumentNullException("id");
+                throw new ArgumentNullException(nameof(id));
             }
 
             CheckDisposed();
@@ -1948,7 +1948,7 @@ namespace Emby.Server.Implementations.Data
             return item;
         }
 
-        private Guid[] SplitToGuids(string value)
+        private static Guid[] SplitToGuids(string value)
         {
             var ids = value.Split('|');
 
@@ -1965,7 +1965,7 @@ namespace Emby.Server.Implementations.Data
         /// <summary>
         /// Gets chapters for an item
         /// </summary>
-        /// <param name="id">The id.</param>
+        /// <param name="item">The item.</param>
         /// <returns>IEnumerable{ChapterInfo}.</returns>
         /// <exception cref="System.ArgumentNullException">id</exception>
         public List<ChapterInfo> GetChapters(BaseItem item)
@@ -1996,7 +1996,7 @@ namespace Emby.Server.Implementations.Data
         /// <summary>
         /// Gets a single chapter for an item
         /// </summary>
-        /// <param name="id">The id.</param>
+        /// <param name="item">The item.</param>
         /// <param name="index">The index.</param>
         /// <returns>ChapterInfo.</returns>
         /// <exception cref="System.ArgumentNullException">id</exception>
@@ -2067,12 +2067,12 @@ namespace Emby.Server.Implementations.Data
 
             if (id.Equals(Guid.Empty))
             {
-                throw new ArgumentNullException("id");
+                throw new ArgumentNullException(nameof(id));
             }
 
             if (chapters == null)
             {
-                throw new ArgumentNullException("chapters");
+                throw new ArgumentNullException(nameof(chapters));
             }
 
             using (WriteLock.Write())
@@ -2144,7 +2144,7 @@ namespace Emby.Server.Implementations.Data
             }
         }
 
-        private bool EnableJoinUserData(InternalItemsQuery query)
+        private static bool EnableJoinUserData(InternalItemsQuery query)
         {
             if (query.User == null)
             {
@@ -2681,7 +2681,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             CheckDisposed();
@@ -2739,7 +2739,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             CheckDisposed();
@@ -2928,7 +2928,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             CheckDisposed();
@@ -3212,7 +3212,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             CheckDisposed();
@@ -3286,7 +3286,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             CheckDisposed();
@@ -3362,7 +3362,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             CheckDisposed();
@@ -5184,7 +5184,7 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
         {
             if (id.Equals(Guid.Empty))
             {
-                throw new ArgumentNullException("id");
+                throw new ArgumentNullException(nameof(id));
             }
 
             CheckDisposed();
@@ -5233,7 +5233,7 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
         {
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             CheckDisposed();
@@ -5273,7 +5273,7 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
         {
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             CheckDisposed();
@@ -5387,12 +5387,12 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
         {
             if (itemId.Equals(Guid.Empty))
             {
-                throw new ArgumentNullException("itemId");
+                throw new ArgumentNullException(nameof(itemId));
             }
 
             if (ancestorIds == null)
             {
-                throw new ArgumentNullException("ancestorIds");
+                throw new ArgumentNullException(nameof(ancestorIds));
             }
 
             CheckDisposed();
@@ -5556,7 +5556,7 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
         {
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             if (!query.Limit.HasValue)
@@ -5915,12 +5915,12 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
         {
             if (itemId.Equals(Guid.Empty))
             {
-                throw new ArgumentNullException("itemId");
+                throw new ArgumentNullException(nameof(itemId));
             }
 
             if (values == null)
             {
-                throw new ArgumentNullException("keys");
+                throw new ArgumentNullException(nameof(values));
             }
 
             CheckDisposed();
@@ -5991,12 +5991,12 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
         {
             if (itemId.Equals(Guid.Empty))
             {
-                throw new ArgumentNullException("itemId");
+                throw new ArgumentNullException(nameof(itemId));
             }
 
             if (people == null)
             {
-                throw new ArgumentNullException("people");
+                throw new ArgumentNullException(nameof(people));
             }
 
             CheckDisposed();
@@ -6102,7 +6102,7 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
 
             if (query == null)
             {
-                throw new ArgumentNullException("query");
+                throw new ArgumentNullException(nameof(query));
             }
 
             var cmdText = "select " + string.Join(",", _mediaStreamSaveColumns) + " from mediastreams where";
@@ -6158,12 +6158,12 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
 
             if (id.Equals(Guid.Empty))
             {
-                throw new ArgumentNullException("id");
+                throw new ArgumentNullException(nameof(id));
             }
 
             if (streams == null)
             {
-                throw new ArgumentNullException("streams");
+                throw new ArgumentNullException(nameof(streams));
             }
 
             cancellationToken.ThrowIfCancellationRequested();
diff --git a/Emby.Server.Implementations/Data/SqliteUserDataRepository.cs b/Emby.Server.Implementations/Data/SqliteUserDataRepository.cs
index 6d4ddcedd..cf60b71d6 100644
--- a/Emby.Server.Implementations/Data/SqliteUserDataRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteUserDataRepository.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -28,13 +28,7 @@ namespace Emby.Server.Implementations.Data
         /// Gets the name of the repository
         /// </summary>
         /// <value>The name.</value>
-        public string Name
-        {
-            get
-            {
-                return "SQLite";
-            }
-        }
+        public string Name => "SQLite";
 
         /// <summary>
         /// Opens the connection to the database
@@ -136,13 +130,7 @@ namespace Emby.Server.Implementations.Data
             return list;
         }
 
-        protected override bool EnableTempStoreMemory
-        {
-            get
-            {
-                return true;
-            }
-        }
+        protected override bool EnableTempStoreMemory => true;
 
         /// <summary>
         /// Saves the user data.
@@ -151,15 +139,15 @@ namespace Emby.Server.Implementations.Data
         {
             if (userData == null)
             {
-                throw new ArgumentNullException("userData");
+                throw new ArgumentNullException(nameof(userData));
             }
             if (internalUserId <= 0)
             {
-                throw new ArgumentNullException("internalUserId");
+                throw new ArgumentNullException(nameof(internalUserId));
             }
             if (string.IsNullOrEmpty(key))
             {
-                throw new ArgumentNullException("key");
+                throw new ArgumentNullException(nameof(key));
             }
 
             PersistUserData(internalUserId, key, userData, cancellationToken);
@@ -169,11 +157,11 @@ namespace Emby.Server.Implementations.Data
         {
             if (userData == null)
             {
-                throw new ArgumentNullException("userData");
+                throw new ArgumentNullException(nameof(userData));
             }
             if (internalUserId <= 0)
             {
-                throw new ArgumentNullException("internalUserId");
+                throw new ArgumentNullException(nameof(internalUserId));
             }
 
             PersistAllUserData(internalUserId, userData, cancellationToken);
@@ -182,7 +170,7 @@ namespace Emby.Server.Implementations.Data
         /// <summary>
         /// Persists the user data.
         /// </summary>
-        /// <param name="userId">The user id.</param>
+        /// <param name="internalUserId">The user id.</param>
         /// <param name="key">The key.</param>
         /// <param name="userData">The user data.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
@@ -203,7 +191,7 @@ namespace Emby.Server.Implementations.Data
             }
         }
 
-        private void SaveUserData(IDatabaseConnection db, long internalUserId, string key, UserItemData userData)
+        private static void SaveUserData(IDatabaseConnection db, long internalUserId, string key, UserItemData userData)
         {
             using (var statement = db.PrepareStatement("replace into UserDatas (key, userId, rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate,AudioStreamIndex,SubtitleStreamIndex) values (@key, @userId, @rating,@played,@playCount,@isFavorite,@playbackPositionTicks,@lastPlayedDate,@AudioStreamIndex,@SubtitleStreamIndex)"))
             {
@@ -280,7 +268,7 @@ namespace Emby.Server.Implementations.Data
         /// <summary>
         /// Gets the user data.
         /// </summary>
-        /// <param name="userId">The user id.</param>
+        /// <param name="internalUserId">The user id.</param>
         /// <param name="key">The key.</param>
         /// <returns>Task{UserItemData}.</returns>
         /// <exception cref="System.ArgumentNullException">
@@ -292,11 +280,11 @@ namespace Emby.Server.Implementations.Data
         {
             if (internalUserId <= 0)
             {
-                throw new ArgumentNullException("internalUserId");
+                throw new ArgumentNullException(nameof(internalUserId));
             }
             if (string.IsNullOrEmpty(key))
             {
-                throw new ArgumentNullException("key");
+                throw new ArgumentNullException(nameof(key));
             }
 
             using (WriteLock.Read())
@@ -323,7 +311,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (keys == null)
             {
-                throw new ArgumentNullException("keys");
+                throw new ArgumentNullException(nameof(keys));
             }
 
             if (keys.Count == 0)
@@ -337,13 +325,13 @@ namespace Emby.Server.Implementations.Data
         /// <summary>
         /// Return all user-data associated with the given user
         /// </summary>
-        /// <param name="userId"></param>
+        /// <param name="internalUserId"></param>
         /// <returns></returns>
         public List<UserItemData> GetAllUserData(long internalUserId)
         {
             if (internalUserId <= 0)
             {
-                throw new ArgumentNullException("internalUserId");
+                throw new ArgumentNullException(nameof(internalUserId));
             }
 
             var list = new List<UserItemData>();
diff --git a/Emby.Server.Implementations/Data/SqliteUserRepository.cs b/Emby.Server.Implementations/Data/SqliteUserRepository.cs
index d490a481e..125f254c1 100644
--- a/Emby.Server.Implementations/Data/SqliteUserRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteUserRepository.cs
@@ -31,13 +31,7 @@ namespace Emby.Server.Implementations.Data
         /// Gets the name of the repository
         /// </summary>
         /// <value>The name.</value>
-        public string Name
-        {
-            get
-            {
-                return "SQLite";
-            }
-        }
+        public string Name => "SQLite";
 
         /// <summary>
         /// Opens the connection to the database
@@ -85,7 +79,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (user == null)
             {
-                throw new ArgumentNullException("user");
+                throw new ArgumentNullException(nameof(user));
             }
 
             var serialized = _jsonSerializer.SerializeToBytes(user);
@@ -122,7 +116,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (user == null)
             {
-                throw new ArgumentNullException("user");
+                throw new ArgumentNullException(nameof(user));
             }
 
             var serialized = _jsonSerializer.SerializeToBytes(user);
@@ -207,14 +201,13 @@ namespace Emby.Server.Implementations.Data
         /// Deletes the user.
         /// </summary>
         /// <param name="user">The user.</param>
-        /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
         /// <exception cref="System.ArgumentNullException">user</exception>
         public void DeleteUser(User user)
         {
             if (user == null)
             {
-                throw new ArgumentNullException("user");
+                throw new ArgumentNullException(nameof(user));
             }
 
             using (WriteLock.Write())
diff --git a/Emby.Server.Implementations/Data/TypeMapper.cs b/Emby.Server.Implementations/Data/TypeMapper.cs
index f4b37749e..e0c2de918 100644
--- a/Emby.Server.Implementations/Data/TypeMapper.cs
+++ b/Emby.Server.Implementations/Data/TypeMapper.cs
@@ -32,7 +32,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (string.IsNullOrEmpty(typeName))
             {
-                throw new ArgumentNullException("typeName");
+                throw new ArgumentNullException(nameof(typeName));
             }
 
             return _typeMap.GetOrAdd(typeName, LookupType);