export enum AppLanguage {
  EN = 'en',
  ZH_CN = 'zh-CN',
  ZH_TW = 'zh-TW',
  JA = 'ja'
}

export enum ChatMode {
  STANDARD = 'standard', // Flash + Search
  DEEP = 'deep',         // Pro + Thinking
  FAST = 'fast'          // Flash Lite
}

export enum ChatScenario {
  GENERAL = 'general',
  READING = 'reading',
  CONCEPT = 'concept',
  RESEARCH = 'research'
}

export interface Message {
  id: string;
  role: 'user' | 'model';
  content: string;
  timestamp: number;
  attachments?: Attachment[];
  isThinking?: boolean; 
  groundingMetadata?: GroundingMetadata;
  model?: string; // 模型名称
}

export interface GroundingMetadata {
  searchEntryPoint?: { renderedContent: string };
  groundingChunks?: Array<{
    web?: { uri: string; title: string };
  }>;
}

export interface Attachment {
  type: 'image' | 'audio' | 'video';
  mimeType: string;
  data: string; // Base64
  name?: string;
}

export interface UserSettings {
  language: AppLanguage;
  theme: 'light' | 'dark';
  isOnboarded?: boolean;
  apiKey?: string;
}

export interface ChatSession {
  id: string;
  title: string;
  messages: Message[];
  mode: ChatMode;
  scenario?: ChatScenario;
  createdAt: number;
}