fix(ui): fix exam and result screen ui

types/exam.d.ts

@@ -0,0 +1,54 @@
+export interface Question {
+  id: string;
+  text: string;
+  options?: string[];
+  type: "multiple-choice" | "text" | "boolean";
+}
+
+export interface Exam {
+  id: string;
+  title: string;
+  description: string;
+  questions: Question[];
+  timeLimit?: number;
+  passingScore?: number;
+}
+
+export interface ExamAnswer {
+  questionId: string;
+  answer: any;
+  timestamp: Date;
+}
+
+export interface ExamAttempt {
+  examId: string;
+  exam: Exam;
+  answers: ExamAnswer[];
+  startTime: Date;
+  endTime?: Date;
+  score?: number;
+  passed?: boolean;
+  apiResponse?: any;
+}
+
+export interface ExamContextType {
+  currentExam: Exam | null;
+  currentAttempt: ExamAttempt | null;
+  isHydrated: boolean;
+  isInitialized: boolean;
+
+  // Actions
+  setCurrentExam: (exam: Exam) => void;
+  startExam: () => void;
+  setAnswer: (questionId: string, answer: any) => void;
+  submitExam: () => ExamAttempt;
+  clearExam: () => void;
+  setApiResponse: (response: any) => void;
+
+  // Getters
+  getAnswer: (questionId: string) => any;
+  getProgress: () => number;
+  isExamStarted: () => boolean;
+  isExamCompleted: () => boolean;
+  getApiResponse: () => any;
+}