added postgresql integration for user permissions

UserPermissionTest_CS_WinForms/JsonUserRepository.cs

@@ -74,7 +74,7 @@ namespace UserPermissionTest_CS_WinForms
             }
         }
 
-        public List<string> LoadPermissions()
+        public List<Permission> LoadPermissions()
         {
             if (!File.Exists(PermissionsFile))
             {
@@ -86,7 +86,7 @@ namespace UserPermissionTest_CS_WinForms
             try
             {
                 string json = File.ReadAllText(PermissionsFile);
-                var permissions = JsonConvert.DeserializeObject<List<string>>(json);
+                var permissions = JsonConvert.DeserializeObject<List<Permission>>(json);
                 return permissions ?? GetDefaultPermissions();
             }
             catch (Exception ex)
@@ -96,7 +96,7 @@ namespace UserPermissionTest_CS_WinForms
             }
         }
 
-        public void SavePermissions(List<string> permissions)
+        public void SavePermissions(List<Permission> permissions)
         {
             try
             {
@@ -118,27 +118,27 @@ namespace UserPermissionTest_CS_WinForms
                     Username = "admin",
                     FullName = "System Administrator",
                     Password = PasswordHasher.HashPassword("admin"),
-                    Permissions = GetDefaultPermissions()
+                    Permissions = new List<int> { 1, 2, 3, 4, 5 }
                 },
                 new User
                 {
                     Username = "user",
                     FullName = "Standard User",
                     Password = PasswordHasher.HashPassword("user"),
-                    Permissions = new List<string> { "View Dashboard" }
+                    Permissions = new List<int> { 1 }
                 }
             };
         }
 
-        private List<string> GetDefaultPermissions()
+        private List<Permission> GetDefaultPermissions()
         {
-            return new List<string>
+            return new List<Permission>
             {
-                "View Dashboard",
-                "Edit Settings",
-                "Manage Users",
-                "Full Control",
-                "Delete Transactions"
+                new Permission { Id = 1, Name = "View Dashboard" },
+                new Permission { Id = 2, Name = "Edit Settings" },
+                new Permission { Id = 3, Name = "Manage Users" },
+                new Permission { Id = 4, Name = "Full Control" },
+                new Permission { Id = 5, Name = "Delete Transactions" }
             };
         }
     }