Add XBaseResourceProvider Class and Interfaces for Handle String Resource Based Services Implementation ...

Providers/XStringProvider.cs

@@ -2,7 +2,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Expressions;
-using System.Reactive.Concurrency;
 using System.Threading.Tasks;
 using xCommons.Configurations;
 using xCommons.Extensions;
@@ -126,6 +125,58 @@ namespace xStringService.Providers
             return result;
         }
 
+        /// <summary>
+        /// Retrieve Specified Resource ...
+        /// </summary>
+        /// <param name="resource"></param>
+        /// <param name="language"></param>
+        /// <returns></returns>
+        public async Task<XStringDto> Get(
+            string resource,
+            string language = null
+        )
+        {
+            //
+            // Normalize ...
+            if (language.IsNullOrEmpty())
+            {
+                language = AppConfiguration.DefaultLanguage;
+            }
+
+            //
+            // Validate ...
+            if (resource.IsNullOrEmpty() || language.IsNullOrEmpty())
+            {
+                XException.InvalidArgs.Throw();
+            }
+
+            //
+            // Check Resource Exists ...
+            var isExists = await IsResourceExists(
+                resource: resource,
+                language: language
+            );
+            if (!isExists)
+            {
+                XException.NotFound.Throw();
+            }
+
+            //
+            var entity = await Repository
+                .FindOneAsync(e =>
+                    e.ResourceTitle == resource &&
+                    e.Language.ToNormalString() == language.ToNormalString()
+            );
+            if (entity.IsNullOrDefault())
+            {
+                XException.ActionFailed.Throw();
+            }
+
+            //
+            return entity
+                .ToDynamicObject();
+        }
+
         /// <summary>
         /// Retrieve Specified Translation of Specified Resource ...
         /// </summary>
@@ -417,19 +468,19 @@ namespace xStringService.Providers
             if (totalItemsCount > 0 &&
                 filteredItemsCount > 0)
             {
-                //
-                // Apply Paging ...
-                items = items.ApplyPaging(
-                    query.Page,
-                    query.PageSize
-                );
-
                 //
                 // Apply Sorting ...
                 items = items.ApplySorting(
                     query.SortBy,
                     query.IsAscending
                 );
+
+                //
+                // Apply Paging ...
+                items = items.ApplyPaging(
+                    query.Page,
+                    query.PageSize
+                );
             }
 
             //