fork from 1.3

FreeSR.Database/DatabaseManager.cs

@@ -0,0 +1,55 @@
+namespace FreeSR.Database
+{
+    using FreeSR.Database.Configuration;
+    using FreeSR.Shared;
+    using MongoDB.Driver;
+    using NLog;
+
+    public sealed class DatabaseManager : Singleton<DatabaseManager>
+    {
+        private static readonly Logger s_log = LogManager.GetCurrentClassLogger();
+
+        private DatabaseConfiguration _configuration;
+        private Dictionary<Type, object> _databases;
+
+        public IMongoDatabase MongoDatabase { get; private set; }
+
+        private DatabaseManager()
+        {
+            _databases = new Dictionary<Type, object>();
+        }
+
+        public void Initialize(DatabaseConfiguration configuration)
+        {
+            _configuration = configuration;
+
+            var mongoClient = new MongoClient(configuration.ConnectionString);
+            MongoDatabase = mongoClient.GetDatabase(configuration.Name);
+        }
+
+        public string GetCollectionName(DatabaseType databaseType)
+        {
+            foreach (var entry in _configuration.Entries)
+            {
+                if (entry.Type == databaseType)
+                    return entry.CollectionName;
+            }
+
+            throw new DatabaseMisconfiguredException($"Can not find database of type {databaseType} in provided configuration.");
+        }
+
+        public DatabaseManager Add<T>(ISRDatabase<T> database) where T : class
+        {
+            _databases.Add(database.GetType(), database);
+            return this;
+        }
+
+        public T Get<T>() where T : class
+        {
+            if (_databases.TryGetValue(typeof(T), out var database))
+                return database as T;
+
+            return null;
+        }
+    }
+}