trading/app_idea/state-management.md

State Management Documentation

State Management Solution

The application uses Zustand as the primary state management solution for the following reasons:

• Simplified API with minimal boilerplate
• Strong performance characteristics for complex state
• Good compatibility with React's concurrent features
• Excellent TypeScript support
• Middleware support for additional functionality

State Structure

The state is divided into several specialized stores for different concerns:

1. User Store

Manages authentication state and user profile information.

// userStore.js
import create from 'zustand';
import { persist } from 'zustand/middleware';

const useUserStore = create(
  persist(
    (set, get) => ({
      user: null,
      isAuthenticated: false,
      credits: 0,
      isPremium: false,
      
      // Actions
      setUser: (userData) => set({
        user: userData,
        isAuthenticated: true,
        credits: userData.credits,
        isPremium: userData.isPremium
      }),
      
      logout: () => set({
        user: null,
        isAuthenticated: false,
        credits: 0,
        isPremium: false
      }),