types.ts

export enum QuestionType {
  MCQ = '多項選擇題',
  TRUE_FALSE = '是非題',
  FILL_IN_BLANK = '填充題',
  SHORT_ANSWER = '短答題'
}

export enum GradeLevel {
  P1 = '小學一年級',
  P2 = '小學二年級',
  P3 = '小學三年級',
  P4 = '小學四年級',
  P5 = '小學五年級',
  P6 = '小學六年級'
}

export enum Difficulty {
  EASY = '淺易',
  MEDIUM = '適中',
  HARD = '進階'
}

export interface SectionConfig {
  id: string;
  type: QuestionType;
  questionCount: number;
  marksPerQuestion: number;
  title: string;
  instructions: string;
}

export interface GeneratedQuestion {
  id: number;
  text: string;
  type: string;
  options?: string[]; // For MCQ
  correctAnswer?: string;
  marks: number;
  topic?: string; // New: Source Topic
  pageRef?: string; // New: Source Page Reference
}

export interface GeneratedSection {
  title: string;
  instructions: string;
  totalSectionMarks: number;
  wordBank?: string[]; // New: For P1-P4 Fill in the blanks
  questions: GeneratedQuestion[];
}

export interface GeneratedExam {
  title: string;
  totalMarks: number;
  gradeLevel: string;
  difficulty: string;
  sections: GeneratedSection[];
}

export interface PastPaper {
  id: string;
  fileName: string;
  content: string;
  uploadDate: number;
}

export interface AppState {
  step: number;
  textbookContent: string;
  pastPapers: PastPaper[]; // New: List of past papers for comparison
  examTitle: string;
  gradeLevel: GradeLevel;
  difficulty: Difficulty;
  sections: SectionConfig[];
  generatedExam: GeneratedExam | null;
  isLoading: boolean;
  error: string | null;
}