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Framework/Caching/StringResourcesCache.cs

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+using System;
+using System.Collections.Concurrent;
+using System.IO;
+using System.Xml.Linq;
+
+namespace Kreta.Framework.Caching
+{
+    public sealed class StringResourcesCache : Cache
+    {
+        private const int DefaultLcid = 1038; // magyar
+        private const string StringResourcesFileName = "StringResources.kres";
+
+        private ConcurrentDictionary<string, string> cache;
+
+        public StringResourcesCache(CacheManager cacheManager) : base(cacheManager)
+        {
+            cache = new ConcurrentDictionary<string, string>();
+            LoadCache();
+        }
+
+        private string GetStringResourcesKey(int id, int lcid)
+        {
+            return $"{id}¤{lcid}";
+        }
+
+        private void LoadCache()
+        {
+            string[] stringResourcesFilePath = Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory, StringResourcesFileName, SearchOption.AllDirectories);
+            if (stringResourcesFilePath.Length == 0)
+            {
+                throw new Exception($"Not found {StringResourcesFileName} file!");
+            }
+
+            var root = XElement.Load(stringResourcesFilePath[0]);
+
+            foreach (XElement text in root.Elements())
+            {
+                foreach (XElement language in text.Elements())
+                {
+                    string stringResourcesKey = GetStringResourcesKey(Convert.ToInt32(text.Attribute("ID").Value), Convert.ToInt32(language.Attribute("LCID").Value));
+                    string value = language.Value.Replace("\n", "<br/>");
+
+                    cache.AddOrUpdate(stringResourcesKey, key => value, (k, v) => value);
+                }
+            }
+        }
+
+        private static string GetDefaultText(int id, int lcid)
+        {
+            return $"Nincs fordítása -> ID:{id} - LCID:{lcid}!";
+        }
+
+        public string Get(int id, int lcid)
+        {
+            return Get(id, lcid, GetDefaultText(id, lcid));
+        }
+
+        public string Get(int id, int lcid, string defaultText)
+        {
+            var result = cache.GetOrAdd(GetStringResourcesKey(id, lcid), key => GetDefaultText(id, lcid));
+
+            if (result == null && lcid != DefaultLcid)
+            {
+                result = cache.GetOrAdd(GetStringResourcesKey(id, DefaultLcid), key => GetDefaultText(id, DefaultLcid));
+            }
+
+            if (result == null)
+            {
+                result = defaultText;
+            }
+
+            return result;
+        }
+
+        public override void Reset()
+        {
+            cache.Clear();
+        }
+    }
+}