Implemented the different languages and added the ability to change cultures. #243

PlexRequests.UI/Helpers/CultureHelper.cs

@@ -0,0 +1,116 @@
+#region Copyright
+// /************************************************************************
+//    Copyright (c) 2016 Jamie Rees
+//    File: CultureHelper.cs
+//    Created By: Jamie Rees
+//   
+//    Permission is hereby granted, free of charge, to any person obtaining
+//    a copy of this software and associated documentation files (the
+//    "Software"), to deal in the Software without restriction, including
+//    without limitation the rights to use, copy, modify, merge, publish,
+//    distribute, sublicense, and/or sell copies of the Software, and to
+//    permit persons to whom the Software is furnished to do so, subject to
+//    the following conditions:
+//   
+//    The above copyright notice and this permission notice shall be
+//    included in all copies or substantial portions of the Software.
+//   
+//    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+//    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+//    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+//    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+//    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+//    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//  ************************************************************************/
+#endregion
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+
+namespace PlexRequests.UI.Helpers
+{
+    public class CultureHelper
+    {
+        private static readonly List<string> ValidCultures = new List<string> { "en-US", "de-DE", "fr-FR", "es-ES", "de", "en", "fr", "es","da","sv","it" };
+
+        private static readonly List<string> ImplimentedCultures = new List<string> {
+        "en-US",
+        "en",
+        "de",
+        "fr",
+        "es",
+        "da",
+        "sv",
+        "it"
+    };
+
+        /// <summary>
+        /// Returns true if the language is a right-to-left language.
+        /// </summary>
+        public static bool IsRighToLeft()
+        {
+            return Thread.CurrentThread.CurrentCulture.TextInfo.IsRightToLeft;
+        }
+
+        /// <summary>
+        /// Returns a valid culture name based on "name" parameter. If "name" is not valid, it returns the default culture "en-US"
+        /// </summary>
+        /// <param name='name'> Culture's name (e.g. en-US) </param>
+        public static string GetImplementedCulture(string name)
+        {
+            if (string.IsNullOrEmpty(name))
+            {
+                return GetDefaultCulture();
+            }
+
+            // Validate the culture
+            if (!ValidCultures.Any(c => c.Equals(name, StringComparison.InvariantCultureIgnoreCase)))
+            {
+                return GetDefaultCulture();
+            }
+
+            if (ImplimentedCultures.Any(c => c.Equals(name, StringComparison.InvariantCultureIgnoreCase)))
+            {
+                return name; // We do have the culture, lets go with it
+            }
+
+            // Find a close match. 
+            var match = GetNeutralCulture(name);
+
+            foreach (var c in ImplimentedCultures.Where(c => c.StartsWith(match, StringComparison.InvariantCultureIgnoreCase)))
+            {
+                return c;
+            }
+
+            return GetDefaultCulture(); // return Default culture since we cannot find anything
+        }
+
+        /// <summary>
+        /// Returns default culture name which is the first name declared (e.g. en-US)
+        /// </summary>
+        /// <returns> Culture string e.g. en-US </returns>
+        public static string GetDefaultCulture()
+        {
+            return ImplimentedCultures[0]; // return first culture
+        }
+
+        public static string GetCurrentCulture()
+        {
+            return Thread.CurrentThread.CurrentCulture.Name;
+        }
+
+        public static string GetCurrentNeutralCulture()
+        {
+            return GetNeutralCulture(Thread.CurrentThread.CurrentCulture.Name);
+        }
+
+        public static string GetNeutralCulture(string name)
+        {
+            if (!name.Contains("-")) return name;
+
+            return name.Split('-')[0]; // Read first part only
+        }
+    }
+}