types.ts

export interface TranscriptEntry {
  source: 'user' | 'avatar' | 'system';
  text: string;
  isFinal: boolean;
}

export interface FeedbackItem {
  original: string;
  correction: string;
  explanation: string;
  type: 'grammar' | 'pronunciation' | 'vocabulary';
  score: number; // 0-100 Fluency Score
}

export interface Word {
  word: string;
  translation: string;
  masteryScore?: number; // 0-100
  lastReviewed?: number; // timestamp
  strength?: number; // 1-5 for Spaced Repetition
}

export interface UserProfile {
  name?: string;
  hobbies: string[];
  profession?: string;
  motivation?: string; 
  facts: Record<string, string>; // Dynamic facts: "Has a dog named Max"
}

export type LearningMode = 'lesson' | 'roleplay' | 'quiz';

// --- Tutor & Voice Types ---

export type VoiceName = 'Puck' | 'Charon' | 'Kore' | 'Fenrir' | 'Aoede';

export interface Tutor {
  id: string;
  name: string;
  voiceName: VoiceName;
  imageUrl: string;
  personality: string; 
}

// --- Curriculum Types ---

export type CEFRLevel = 'A1' | 'A2' | 'B1' | 'B2' | 'C1' | 'C2';

export interface Topic {
  id: string;
  title: string;
  description: string;
  objectives: string[]; 
  vocabularyFocus: string[];
}

export interface Unit {
  id: string;
  title: string;
  topics: Topic[];
}

export interface Level {
  id: CEFRLevel;
  title: string;
  description: string;
  units: Unit[];
}

export interface Curriculum {
  levels: Level[];
}