add changes

frontend/src/app/core/models/quiz.model.ts

@@ -1,5 +1,42 @@
+import { Category } from './category.model';
 import { Question } from './question.model';
 
+export interface QuizSessionHistory {
+
+  "time": {
+    "spent": number,
+    "limit": number | null,
+    "percentage": number
+  },
+  "createdAt": "2025-12-19T18:49:58.000Z"
+  id: string;
+
+  category?: {
+    id: string;
+    name: string;
+    slug: string;
+    icon: string;
+    color: string;
+  };
+  quizType: QuizType;
+  difficulty: string;
+  questions: {
+    answered: number,
+    total: number,
+    correct: number,
+    accuracy: number
+  };
+  score: {
+    earned: number
+    total: number
+    percentage: number
+  };
+
+  status: QuizStatus;
+  startedAt: string;
+  completedAt?: string;
+  isPassed?: boolean;
+}
 /**
  * Quiz Session Interface
  * Represents an active or completed quiz session
@@ -40,6 +77,16 @@ export type QuizStatus = 'in_progress' | 'completed' | 'abandoned';
  * Quiz Start Request
  */
 export interface QuizStartRequest {
+  success: true;
+  data: {
+    categoryId: string;
+    questionCount: number;
+    difficulty?: string; // 'easy', 'medium', 'hard', 'mixed'
+    quizType?: QuizType;
+  };
+}
+export interface QuizStartFormRequest {
+
   categoryId: string;
   questionCount: number;
   difficulty?: string; // 'easy', 'medium', 'hard', 'mixed'
@@ -51,10 +98,12 @@ export interface QuizStartRequest {
  */
 export interface QuizStartResponse {
   success: boolean;
-  sessionId: string;
-  questions: Question[];
-  totalQuestions: number;
-  message?: string;
+  data: {
+    sessionId: string;
+    questions: Question[];
+    totalQuestions: number;
+    message?: string;
+  };
 }
 
 /**