📋 Data Models

User Model

// src/models/User.ts

export interface User {
  id: string;                    // UUID
  email: string;                 // User's email address
  password: string;              // Hashed password (stored in localStorage)
  name: string;                  // Display name
  createdAt: string;             // ISO date string
  updatedAt: string;             // ISO date string
}

export interface LoginCredentials {
  email: string;
  password: string;
}

export interface AuthState {
  user: User | null;
  isAuthenticated: boolean;
  isLoading: boolean;
  error: string | null;
}

Note Model

// src/models/Note.ts

export interface Note {
  id: string;                    // UUID
  title: string;                 // Note title
  content: string;               // Rich text content (HTML)
  plainTextContent: string;      // Plain text for search
  authorId: string;              // User ID who created the note
  authorName: string;            // Author's display name
  tags: string[];                // Array of tag names
  createdAt: string;             // ISO date string
  updatedAt: string;             // ISO date string
  isDeleted: boolean;            // Soft delete flag
}

export interface CreateNoteDTO {
  title: string;
  content: string;
  tags?: string[];
}

export interface UpdateNoteDTO {
  title?: string;
  content?: string;
  tags?: string[];
}

export interface NoteFilters {
  searchQuery?: string;
  tags?: string[];
  sortBy?: 'createdAt' | 'updatedAt' | 'title';
  sortOrder?: 'asc' | 'desc';
}

Tag Model

// src/models/Tag.ts

export interface Tag {
  id: string;                    // UUID
  name: string;                  // Tag name
  color?: string;                // Optional color for UI
  createdAt: string;             // ISO date string
  usageCount: number;            // How many notes use this tag
}

export interface TagStats {
  totalTags: number;
  mostUsedTags: Tag[];
}