export enum VoiceName {
  Puck = 'Puck',
  Charon = 'Charon',
  Kore = 'Kore',
  Fenrir = 'Fenrir',
  Zephyr = 'Zephyr',
  Aoede = 'Aoede',
}

export enum PlaybackStatus {
  IDLE = 'IDLE',
  LOADING_TEXT = 'LOADING_TEXT',
  LOADING_AUDIO = 'LOADING_AUDIO',
  READY = 'READY',
  PLAYING = 'PLAYING',
  PAUSED = 'PAUSED',
  ERROR = 'ERROR',
  COMPLETED = 'COMPLETED'
}

export interface AudioSegment {
  id: string;
  text: string;
  audioUrl?: string;
  isLoading: boolean;
  hasError: boolean;
}

export interface Article {
  id: string;
  url: string;
  title: string;
  text: string;
  segments: AudioSegment[];
  currentSegmentIndex: number;
  status: PlaybackStatus;
  errorMessage?: string;
  // New fields for enhanced features
  summary?: string;
  summaryAudioUrl?: string;
  isSummaryLoading?: boolean;
  complexity?: 'simple' | 'moderate' | 'complex';
  wordCount?: number;
  estimatedReadTime?: number; // in minutes
  addedAt?: number; // timestamp
  fromRssFeed?: string; // RSS feed ID if applicable
}

export interface PlayerState {
  isPlaying: boolean;
  playbackRate: number;
  currentArticleId: string | null;
  selectedVoice: VoiceName;
  voiceMood: VoiceMood;
  smartSpeedEnabled: boolean;
}

export interface ReaderSettings {
  isDarkMode: boolean;
  fontSize: 'sm' | 'base' | 'lg' | 'xl' | '2xl';
  lineHeight: 'normal' | 'relaxed' | 'loose';
  fontFamily: 'sans' | 'serif' | 'mono';
  autoScroll: boolean;
  readingTone: 'clean' | 'sepia' | 'night';
  pageWidth: 'cozy' | 'standard' | 'wide';
  zenMode: boolean;
}

// Voice Moods - preset configurations
export type VoiceMood = 'neutral' | 'energetic' | 'calm' | 'professional' | 'bedtime';

export interface VoiceMoodConfig {
  id: VoiceMood;
  label: string;
  emoji: string;
  description: string;
  recommendedVoice: VoiceName;
  recommendedSpeed: number;
}

// Reading Stats
export interface ReadingStats {
  totalArticlesRead: number;
  totalMinutesListened: number;
  totalWordsRead: number;
  currentStreak: number; // days
  longestStreak: number;
  lastReadDate: string; // ISO date string
  articlesPerDay: Record<string, number>; // date -> count
  favoriteVoice: VoiceName;
  voiceUsage: Record<VoiceName, number>;
}

// Bookmarks for resume functionality
export interface Bookmark {
  articleId: string;
  url: string;
  title: string;
  segmentIndex: number;
  savedAt: number; // timestamp
  progress: number; // 0-100 percentage
}

// RSS Feed subscriptions
export interface RSSFeed {
  id: string;
  url: string;
  title: string;
  description?: string;
  lastFetched?: number;
  articleCount?: number;
  isActive: boolean;
  addedAt: number;
}

export interface RSSArticle {
  title: string;
  url: string;
  description?: string;
  pubDate?: string;
  feedId: string;
}