export type NavigationView = 'notebooks' | 'agents' | 'settings' | 'shared' | 'reminders' | 'trash' | 'brainstorm' | 'insights' | 'temporal' | 'graph' | 'revision';
export type AITone = 'Professional' | 'Creative' | 'Academic' | 'Casual';
export type AITab = 'infos' | 'versions' | 'relations' | 'discussion' | 'actions' | 'resources' | 'explore';
export type SettingsTab = 'general' | 'ai' | 'billing' | 'appearance' | 'profile' | 'data' | 'mcp' | 'about';

export interface Tag {
  id: string;
  label: string;
  type: 'ai' | 'user';
}

export interface Attachment {
  id: string;
  name: string;
  type: 'pdf' | 'docx' | 'image' | 'other';
  url: string;
  content?: string; // Extracted text
  isProcessed?: boolean;
}

export interface NoteVersion {
  id: string;
  title: string;
  content: string;
  timestamp: string;
  size: number;
}

export interface Note {
  id: string;
  carnetId: string;
  title: string;
  content: string;
  imageUrl: string;
  date: string;
  tags: Tag[];
  attachments?: Attachment[];
  isPinned?: boolean;
  isDeleted?: boolean;
  deletedAt?: string;
  embedding?: number[];
  clusterId?: string;
  isClipped?: boolean;
  clipSourceUrl?: string;
  clipFavicon?: string;
  clipDate?: string;
  isVersioningEnabled?: boolean;
  versionHistory?: NoteVersion[];
}

export interface NoteCluster {
  id: string;
  name: string;
  noteIds: string[];
  centroid? : number[];
  color: string;
}

export interface BridgeNote {
  noteId: string;
  connectedClusterIds: string[];
  bridgeScore: number;
}

export interface ConnectionSuggestion {
  id: string;
  title: string;
  description: string;
  reasoning: string;
  clusterAId: string;
  clusterBId: string;
}

export interface BrainstormSession {
  id: string;
  seedIdea: string;
  sourceNoteId?: string;
  contextNoteIds?: string[];
  exportedNoteId?: string;
  createdAt: string;
  updatedAt: string;
  userId: string;
}

export type BrainstormIdeaStatus = 'active' | 'dismissed' | 'converted';

export interface BrainstormIdea {
  id: string;
  sessionId: string;
  waveNumber: 1 | 2 | 3;
  title: string;
  description: string;
  connectionToSeed: string;
  noveltyScore: number; // 1-10
  parentIdeaId?: string;
  convertedToNoteId?: string;
  relatedNoteIds?: string[];
  status: BrainstormIdeaStatus;
  position?: { x: number; y: number };
}

export interface Carnet {
  id: string;
  name: string;
  initial: string;
  type: 'Private' | 'Project' | 'Shared';
  isPrivate?: boolean;
  parentId?: string;
  isDeleted?: boolean;
  deletedAt?: string;
}

export interface NoteAccessLog {
  noteId: string;
  accessedAt: string;
  action: 'view' | 'edit' | 'search_hit';
}

export interface NotePrediction {
  noteId: string;
  predictedRelevanceDate: string;
  confidence: number;
  reason: string;
  generatedAt: string;
}

export type FlashcardEvaluation = 'fail' | 'hesitant' | 'sure';

export interface Flashcard {
  id: string;
  noteId: string;
  question: string;
  answer: string;
  intervalDays: number; // For spaced repetition
  nextReviewDate: string; // ISO String
  easeFactor: number;
  mastered: boolean;
  history?: {
    reviewedAt: string;
    evaluation: FlashcardEvaluation;
  }[];
}

export interface FlashcardDeck {
  noteId: string;
  title: string;
  cardsCount: number;
  nextReviewDate: string; // Min nextReviewDate of all cards
  masteryScore: number; // Proportion of cards evaluation === 'sure'
  cards: Flashcard[];
}