enable users to have their own config file.

External/Implementations/UserConfigDataAccess.cs

@@ -0,0 +1,38 @@
+using CarCareTracker.External.Interfaces;
+using CarCareTracker.Helper;
+using CarCareTracker.Models;
+using LiteDB;
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+
+namespace CarCareTracker.External.Implementations
+{
+    public class UserConfigDataAccess: IUserConfigDataAccess
+    {
+        private static string dbName = StaticHelper.DbName;
+        private static string tableName = "userconfigrecords";
+        public UserConfigData GetUserConfig(int userId)
+        {
+            using (var db = new LiteDatabase(dbName))
+            {
+                var table = db.GetCollection<UserConfigData>(tableName);
+                return table.FindById(userId);
+            };
+        }
+        public bool SaveUserConfig(UserConfigData userConfigData)
+        {
+            using (var db = new LiteDatabase(dbName))
+            {
+                var table = db.GetCollection<UserConfigData>(tableName);
+                return table.Upsert(userConfigData);
+            };
+        }
+        public bool DeleteUserConfig(int userId)
+        {
+            using (var db = new LiteDatabase(dbName))
+            {
+                var table = db.GetCollection<UserConfigData>(tableName);
+                return table.Delete(userId);
+            };
+        }
+    }
+}