feat(lessons): add lessons from client db

src/types/lesson.ts

@@ -33,3 +33,132 @@ export interface LessonDetails {
   };
   topic: Topic[];
 }
+
+export interface CircleState {
+  h: number;
+  k: number;
+  r: number;
+}
+
+export interface Point {
+  x: number;
+  y: number;
+}
+
+export type QuizOption = {
+  id: string;
+  text: string;
+  isCorrect: boolean;
+  feedback: string;
+};
+
+export interface QuizData {
+  id: number;
+  question: string;
+  options: QuizOption[];
+  explanation: string;
+}
+
+export interface LessonMetadata {
+  id: string;
+  title: string;
+  description: string;
+  iconName:
+    | "Circle"
+    | "Triangle"
+    | "Square"
+    | "Chart"
+    | "Target"
+    | "Calculator"
+    | "TrendingUp"
+    | "Percent"
+    | "Scale"
+    | "BarChart3"
+    | "Layers"
+    | "Grid"
+    | "BookOpen"
+    | "PieChart";
+  color: string;
+  category: string;
+}
+
+// ── Practice Mode Types ──
+
+export type Difficulty = "easy" | "medium" | "hard";
+export type PracticeQuestionType = "mcq" | "spr";
+export type PracticeSection = "math" | "rw";
+export type PracticeView = "lobby" | "session" | "results" | "treasure";
+
+export interface PracticeChoice {
+  label: string; // "A" | "B" | "C" | "D"
+  text: string; // HTML-safe answer text
+}
+
+export interface PracticeQuestion {
+  id: string;
+  type: PracticeQuestionType;
+  questionHtml: string;
+  passage?: string;
+  choices: PracticeChoice[];
+  correctAnswer: string;
+  explanation: string;
+  hasFigure: boolean;
+  figureDescription?: string;
+  figureUrl?: string;
+}
+
+export interface PracticeTopic {
+  id: string;
+  name: string;
+  section: PracticeSection;
+  category: string;
+  color: string;
+  questions: {
+    easy: PracticeQuestion[];
+    medium: PracticeQuestion[];
+    hard: PracticeQuestion[];
+  };
+}
+
+export type TopicRegistry = Record<string, PracticeTopic>;
+
+export interface AnswerRecord {
+  selectedAnswer: string | null;
+  isCorrect: boolean | null;
+  isSubmitted: boolean;
+  coinAwarded: boolean;
+}
+
+export interface PracticeSessionState {
+  topicId: string;
+  topicName: string;
+  difficulty: Difficulty;
+  questions: PracticeQuestion[];
+  currentIndex: number;
+  answers: Record<string, AnswerRecord>;
+  coinsEarnedThisSession: number;
+}
+
+export interface TopicDifficultyProgress {
+  attempted: number;
+  correct: number;
+}
+
+export interface GoldCoinState {
+  totalCoins: number;
+  earnedQuestions: Record<string, boolean>;
+  topicProgress: Record<
+    string,
+    {
+      easy: TopicDifficultyProgress;
+      medium: TopicDifficultyProgress;
+      hard: TopicDifficultyProgress;
+    }
+  >;
+}
+
+export const COIN_REWARDS: Record<Difficulty, number> = {
+  easy: 5,
+  medium: 10,
+  hard: 15,
+};