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Signed-off-by: mbrucedogs <mbrucedogs@gmail.com>

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# React + TypeScript + Vite # SingSalot AI - Karaoke App
This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules. > **Modern React + TypeScript + Ionic + Firebase Realtime Database**
Currently, two official plugins are available: A real-time karaoke application designed for in-home party use with multi-user synchronization, admin controls, and comprehensive song management.
- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) for Fast Refresh ## 🎯 Features
- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
## Expanding the ESLint configuration ### **Core Functionality**
- **Real-time Queue Management** - Synchronized across all connected devices
- **Multi-User Support** - Admin and user roles with different permissions
- **Comprehensive Search** - Instant search through song catalog with pagination
- **Favorites System** - Shared favorites list across all users
- **History Tracking** - Automatic tracking of played songs
- **Artist Browsing** - Browse songs by artist with modal views
- **Song Lists** - Predefined song collections with availability matching
- **Top Played** - Popular songs based on play history
- **New Songs** - Recently added songs to the catalog
If you are developing a production application, we recommend updating the configuration to enable type-aware lint rules: ### **Admin Features**
- **Queue Control** - Reorder and delete queue items
- **Playback Control** - Play, pause, stop music
- **Singer Management** - Add/remove singers
- **Settings Management** - Configure autoadvance and userpick
- **Song Management** - Disable/enable songs
```js ### **Technical Features**
export default tseslint.config([ - **Real-time Sync** - Firebase Realtime Database synchronization
globalIgnores(['dist']), - **Performance Optimized** - Memoized components, virtualized lists, pagination
{ - **Type Safety** - Full TypeScript implementation
files: ['**/*.{ts,tsx}'], - **Responsive Design** - Mobile-first with touch-friendly interface
extends: [ - **Error Handling** - Graceful degradation and retry patterns
// Other configs...
// Remove tseslint.configs.recommended and replace with this ## 🏗️ Architecture
...tseslint.configs.recommendedTypeChecked,
// Alternatively, use this for stricter rules
...tseslint.configs.strictTypeChecked,
// Optionally, add this for stylistic rules
...tseslint.configs.stylisticTypeChecked,
// Other configs... ### **Refactored Architecture (Latest)**
], The codebase has been completely refactored for better maintainability and performance:
languageOptions: {
parserOptions: { #### **Domain-Specific Redux Slices**
project: ['./tsconfig.node.json', './tsconfig.app.json'], - `songsSlice.ts` - Song catalog management
tsconfigRootDir: import.meta.dirname, - `queueSlice.ts` - Queue operations and state
}, - `favoritesSlice.ts` - Favorites management
// other options... - `historySlice.ts` - History tracking
},
}, #### **Composable Hooks**
]) - `useFilteredSongs.ts` - Reusable song filtering logic
- `usePaginatedData.ts` - Generic pagination with search
- `useErrorHandler.ts` - Centralized error handling
- `usePerformanceMonitor.ts` - Performance tracking
#### **Optimized Components**
- `SongItem.tsx` - Memoized with React.memo and useCallback
- `ListItem.tsx` - Generic list item with TypeScript support
- `VirtualizedList.tsx` - High-performance list rendering
- `ActionButton.tsx` - Reusable action buttons
#### **Performance Optimizations**
- **React.memo** for component memoization
- **useMemo/useCallback** for expensive computations
- **Virtualized rendering** for large datasets
- **Infinite scroll** with pagination
- **Optimized Redux selectors**
## 🚀 Quick Start
### **Prerequisites**
- Node.js 18+
- npm or yarn
- Firebase project setup
### **Installation**
```bash
# Clone the repository
git clone <repository-url>
cd singsalot-ai
# Install dependencies
npm install
# Set up environment variables
cp env.template .env.local
# Edit .env.local with your Firebase configuration
# Start development server
npm run dev
``` ```
You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules: ### **Environment Setup**
Create a `.env.local` file with your Firebase configuration:
```js ```env
// eslint.config.js VITE_FIREBASE_API_KEY=your_api_key
import reactX from 'eslint-plugin-react-x' VITE_FIREBASE_AUTH_DOMAIN=your_project.firebaseapp.com
import reactDom from 'eslint-plugin-react-dom' VITE_FIREBASE_DATABASE_URL=https://your_project.firebaseio.com
VITE_FIREBASE_PROJECT_ID=your_project_id
export default tseslint.config([ VITE_FIREBASE_STORAGE_BUCKET=your_project.appspot.com
globalIgnores(['dist']), VITE_FIREBASE_MESSAGING_SENDER_ID=your_sender_id
{ VITE_FIREBASE_APP_ID=your_app_id
files: ['**/*.{ts,tsx}'],
extends: [
// Other configs...
// Enable lint rules for React
reactX.configs['recommended-typescript'],
// Enable lint rules for React DOM
reactDom.configs.recommended,
],
languageOptions: {
parserOptions: {
project: ['./tsconfig.node.json', './tsconfig.app.json'],
tsconfigRootDir: import.meta.dirname,
},
// other options...
},
},
])
``` ```
## 📁 Project Structure
```
src/
├── components/ # Reusable UI components
│ ├── Auth/ # Authentication components
│ ├── common/ # Shared components (SongItem, ActionButton, etc.)
│ ├── Layout/ # Layout and navigation components
│ └── Navigation/ # Navigation components
├── features/ # Feature-specific components
│ ├── Artists/ # Artist browsing feature
│ ├── Favorites/ # Favorites management
│ ├── History/ # Play history
│ ├── NewSongs/ # New songs feature
│ ├── Queue/ # Queue management
│ ├── Search/ # Song search
│ ├── Settings/ # Settings and admin features
│ ├── Singers/ # Singer management
│ ├── SongLists/ # Song lists feature
│ └── TopPlayed/ # Top played songs
├── firebase/ # Firebase configuration and services
├── hooks/ # Custom React hooks (refactored)
├── redux/ # State management (domain-specific slices)
├── types/ # TypeScript type definitions
└── utils/ # Utility functions
```
## 🛠️ Development
### **Available Scripts**
```bash
npm run dev # Start development server
npm run build # Build for production
npm run preview # Preview production build
npm run lint # Run ESLint
npm run type-check # Run TypeScript type checking
```
### **Key Development Patterns**
#### **Adding New Features**
1. Create feature component in `src/features/`
2. Add corresponding Redux slice if needed
3. Create custom hooks for business logic
4. Add TypeScript types in `src/types/`
#### **Component Guidelines**
- Use `React.memo` for performance-critical components
- Implement `useMemo` and `useCallback` for expensive operations
- Follow the established prop patterns for consistency
#### **State Management**
- Use domain-specific Redux slices for related functionality
- Implement async thunks for Firebase operations
- Use memoized selectors for performance
## 🔧 Firebase Configuration
### **Database Structure**
The app uses Firebase Realtime Database with the following structure:
```json
{
"controllers": {
"[controllerName]": {
"favorites": {},
"history": {},
"topPlayed": {},
"newSongs": {},
"disabledSongs": {},
"player": {
"queue": {},
"settings": {},
"singers": {},
"state": {}
},
"songList": {},
"songs": {}
}
}
}
```
### **Security Rules**
The app uses client-side validation with permissive Firebase rules for real-time synchronization.
## 📱 User Experience
### **Authentication**
- Login requires Party ID and singer name
- Admin access is a privileged mode
- Session state managed in app (lost on reload)
### **Queue Management**
- Real-time synchronization across all clients
- Sequential numerical keys (0, 1, 2, ...)
- Admin-only reordering and deletion
- First item protection during playback
### **Search & Discovery**
- Instant search with debouncing
- Paginated results with infinite scroll
- Multiple entry points (search, history, favorites, etc.)
- Context-aware actions for each song
## 🧪 Testing
### **Current Testing Status**
- ✅ TypeScript compilation
- ✅ ESLint validation
- ✅ Build process
- 🔄 Unit tests (planned)
- 🔄 Integration tests (planned)
### **Testing Strategy**
- Unit tests for business logic and hooks
- Integration tests for Firebase operations
- Component testing with React Testing Library
- Performance testing for large datasets
## 🚀 Deployment
### **Build Process**
```bash
npm run build
```
The build process:
- Compiles TypeScript
- Bundles with Vite
- Optimizes for production
- Generates static assets
### **Deployment Options**
- **Firebase Hosting** - Recommended for Firebase integration
- **Vercel** - Easy deployment with automatic builds
- **Netlify** - Static site hosting with CI/CD
- **Traditional hosting** - Any static file server
## 📚 Documentation
### **Related Documents**
- [`docs/PRD.md`](docs/PRD.md) - Product Requirements Document
- [`docs/platforms/web/PRD-web.md`](docs/platforms/web/PRD-web.md) - Web-specific implementation guide
- [`docs/firebase_schema.json`](docs/firebase_schema.json) - Firebase database schema
### **Design Assets**
- [`docs/platforms/web/design/`](docs/platforms/web/design/) - UI/UX design mockups and assets
## 🤝 Contributing
### **Development Workflow**
1. Create feature branch from main
2. Implement changes following established patterns
3. Ensure TypeScript compilation passes
4. Run linting and type checking
5. Test functionality manually
6. Submit pull request
### **Code Standards**
- Follow TypeScript best practices
- Use established component patterns
- Maintain performance optimizations
- Add appropriate error handling
- Update documentation as needed
## 📄 License
This project is proprietary software. All rights reserved.
## 🆘 Support
For technical support or questions about the implementation:
- Check the documentation in the `docs/` folder
- Review the TypeScript types for API contracts
- Examine the Firebase schema for data structure
- Refer to the platform-specific PRD for implementation details
---
**Built with ❤️ using React, TypeScript, Ionic, and Firebase**

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@ -493,6 +493,15 @@ controllers: {
- **Data Models** shared across all layers - **Data Models** shared across all layers
- **Firebase Integration** abstracted through service layer - **Firebase Integration** abstracted through service layer
### **Architecture Principles:**
- **Separation of Concerns** - UI components handle presentation, business logic in services
- **Reusable Business Logic** - Business rules implemented in platform-agnostic services
- **Testable Code** - Business logic separated from UI for easy testing
- **Maintainability** - Changes to logic don't affect UI
- **Performance** - Optimized data access and state management
- **Type Safety** - Strong typing throughout the codebase
- **Single Responsibility** - Each file has one clear purpose
### **Platform Implementation:** ### **Platform Implementation:**
- **Web:** See `platforms/web/PRD-web.md#codebase-organization` for React/Ionic structure - **Web:** See `platforms/web/PRD-web.md#codebase-organization` for React/Ionic structure
- **iOS:** See `platforms/ios/PRD-ios.md#codebase-organization` (future) - **iOS:** See `platforms/ios/PRD-ios.md#codebase-organization` (future)
@ -542,6 +551,15 @@ controllers: {
- **Caching strategy** for frequently accessed data - **Caching strategy** for frequently accessed data
- **Memory management** for large datasets - **Memory management** for large datasets
### **Performance Requirements:**
- **Real-time synchronization** with minimal latency
- **Efficient data loading** with pagination and infinite scroll
- **Optimized state management** to prevent unnecessary re-renders
- **Caching strategy** for frequently accessed data
- **Memory management** for large datasets
- **Component optimization** for expensive UI operations
- **Data filtering and search** with efficient algorithms
### **Platform Implementation:** ### **Platform Implementation:**
- **Web:** See `platforms/web/PRD-web.md#performance` for React/Ionic optimization - **Web:** See `platforms/web/PRD-web.md#performance` for React/Ionic optimization
- **iOS:** See `platforms/ios/PRD-ios.md#performance` (future) - **iOS:** See `platforms/ios/PRD-ios.md#performance` (future)

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@ -12,14 +12,200 @@ This document contains **web-specific implementation details** for the Karaoke A
| Section | Purpose | | Section | Purpose |
|---------|---------| |---------|---------|
| [UI/UX Behavior](#uiux-behavior) | Web-specific UI patterns and interactions | | [UI/UX Behavior](#uiux-behavior) | Web-specific UI patterns and interactions |
| [Refactored Architecture](#refactored-architecture) | Latest architecture improvements and patterns |
| [Component Architecture](#component-architecture) | React/Ionic component structure | | [Component Architecture](#component-architecture) | React/Ionic component structure |
| [State Management](#state-management) | Redux Toolkit implementation | | [State Management](#state-management) | Redux Toolkit implementation |
| [Performance Optimizations](#performance-optimizations) | Web-specific performance strategies |
| [Development Setup](#development-setup) | Web project configuration | | [Development Setup](#development-setup) | Web project configuration |
| [Design Assets](#design-assets) | Web-specific visual references | | [Design Assets](#design-assets) | Web-specific visual references |
| [Toolset Choices](#toolset-choices) | Web technology rationale | | [Toolset Choices](#toolset-choices) | Web technology rationale |
--- ---
## Refactored Architecture
### **Overview**
The web implementation has been completely refactored to improve maintainability, performance, and developer experience. This section documents the latest architecture patterns and implementation details.
### **Key Architectural Improvements**
#### **1. Domain-Specific Redux Slices**
Replaced the monolithic `controllerSlice` with focused, domain-specific slices:
```typescript
// Before: Monolithic controllerSlice
src/redux/controllerSlice.ts (1000+ lines)
// After: Domain-specific slices
src/redux/songsSlice.ts // Song catalog management
src/redux/queueSlice.ts // Queue operations and state
src/redux/favoritesSlice.ts // Favorites management
src/redux/historySlice.ts // History tracking
```
**Benefits:**
- **Better Performance** - Smaller slices mean faster state updates
- **Easier Testing** - Isolated business logic for each domain
- **Improved Maintainability** - Clear separation of concerns
- **Reduced Bundle Size** - Only load necessary slice logic
#### **2. Composable Hooks**
Extracted common patterns into reusable, composable hooks:
```typescript
// Reusable filtering logic
useFilteredSongs(songs, searchTerm, disabledSongs)
// Generic pagination with search
usePaginatedData(data, pageSize, searchTerm)
// Centralized error handling
useErrorHandler(operation, fallbackMessage)
// Performance monitoring
usePerformanceMonitor(componentName, props)
```
**Benefits:**
- **Code Reuse** - Common patterns shared across features
- **Performance Optimized** - Each hook can be optimized independently
- **Type Safety** - Full TypeScript support with proper typing
- **Easier Testing** - Isolated business logic
#### **3. Optimized Components**
Enhanced components with performance optimizations:
```typescript
// Memoized SongItem with optimized rendering
const SongItem = React.memo<SongItemProps>(({ song, context, ...props }) => {
const isInQueue = useMemo(() => /* expensive computation */, [queue, song.path]);
const handleAddToQueue = useCallback(() => /* action */, [handleAddToQueue, song]);
return <IonItem>...</IonItem>;
});
// Generic ListItem for any data type
const ListItem = React.memo<GenericListItemProps>(({
primaryText, secondaryText, onClick, ...props
}) => {
return <IonItem>...</IonItem>;
});
// High-performance virtualized list
const VirtualizedList = <T,>({
items, renderItem, itemHeight, ...props
}: VirtualizedListProps<T>) => {
// Only renders visible items
return <div>...</div>;
};
```
**Benefits:**
- **React.memo** - Prevents unnecessary re-renders
- **Generic Components** - Reusable across different data types
- **Virtualized Rendering** - Handles large datasets efficiently
- **Performance Monitoring** - Built-in tracking capabilities
### **Implementation Patterns**
#### **State Management Pattern**
```typescript
// Domain-specific slice
export const songsSlice = createSlice({
name: 'songs',
initialState,
reducers: { /* domain-specific actions */ },
extraReducers: (builder) => {
builder.addCase(fetchSongs.fulfilled, (state, action) => {
// Handle async operations
});
},
});
// Composable hook using the slice
export const useSongs = () => {
const dispatch = useAppDispatch();
const songs = useAppSelector(selectSongs);
const fetchSongs = useCallback(async () => {
try {
await dispatch(fetchSongsThunk());
} catch (error) {
// Error handling
}
}, [dispatch]);
return { songs, fetchSongs };
};
```
#### **Component Pattern**
```typescript
// Feature component using composable hooks
const Search: React.FC = () => {
const { songs, loading, error } = useSongs();
const { filteredSongs, searchTerm, setSearchTerm } = useFilteredSongs(songs);
const { paginatedData, hasMore, loadMore } = usePaginatedData(filteredSongs);
return (
<div>
<SearchInput value={searchTerm} onChange={setSearchTerm} />
<VirtualizedList
items={paginatedData}
renderItem={(song) => <SongItem song={song} context="search" />}
hasMore={hasMore}
onLoadMore={loadMore}
/>
</div>
);
};
```
### **Performance Optimizations**
#### **Component-Level Optimizations**
- **React.memo** - Prevents re-renders when props haven't changed
- **useMemo** - Memoizes expensive computations
- **useCallback** - Memoizes event handlers and functions
- **Virtualized Lists** - Only renders visible items for large datasets
#### **State Management Optimizations**
- **Domain-Specific Slices** - Smaller, focused state management
- **Memoized Selectors** - Efficient state access with reselect
- **Lazy Loading** - Load components and data only when needed
- **Incremental Updates** - Target specific Firebase nodes for efficiency
#### **Data Handling Optimizations**
- **Pagination** - Load data in chunks to prevent UI blocking
- **Search Debouncing** - Reduce unnecessary API calls during typing
- **Filtering Optimization** - Efficient algorithms for large datasets
- **Memory Management** - Proper cleanup of listeners and subscriptions
### **Development Guidelines**
#### **Adding New Features**
1. **Create domain-specific slice** if needed
2. **Implement composable hooks** for business logic
3. **Build optimized components** with React.memo and useCallback
4. **Add TypeScript types** for type safety
5. **Implement error handling** using useErrorHandler
#### **Performance Best Practices**
- **Use React.memo** for expensive components
- **Implement useMemo/useCallback** for expensive operations
- **Leverage virtualized lists** for large datasets
- **Optimize Redux selectors** with memoization
- **Monitor performance** with usePerformanceMonitor
#### **Code Organization**
- **Domain-specific slices** in `/redux/`
- **Composable hooks** in `/hooks/`
- **Generic components** in `/components/common/`
- **Feature components** in `/features/`
- **TypeScript types** in `/types/`
---
## UI/UX Behavior ## UI/UX Behavior
### **Web-Specific Requirements:** ### **Web-Specific Requirements:**
@ -55,7 +241,7 @@ This document contains **web-specific implementation details** for the Karaoke A
## Codebase Organization & File Structure ## Codebase Organization & File Structure
### **Web Project Structure:** ### **Refactored Web Project Structure (Latest):**
``` ```
src/ src/
├── components/ # Reusable UI components ├── components/ # Reusable UI components
@ -78,28 +264,55 @@ src/
│ ├── config.ts # Firebase configuration │ ├── config.ts # Firebase configuration
│ ├── services.ts # Firebase service layer │ ├── services.ts # Firebase service layer
│ └── useFirebase.ts # Firebase hooks │ └── useFirebase.ts # Firebase hooks
├── hooks/ # Custom React hooks ├── hooks/ # Custom React hooks (refactored)
│ ├── useFilteredSongs.ts # Reusable song filtering logic
│ ├── usePaginatedData.ts # Generic pagination with search
│ ├── useErrorHandler.ts # Centralized error handling
│ ├── usePerformanceMonitor.ts # Performance tracking
│ ├── useQueue.ts # Queue management hooks │ ├── useQueue.ts # Queue management hooks
│ ├── useSearch.ts # Search functionality hooks │ ├── useSearch.ts # Search functionality hooks
│ ├── useFavorites.ts # Favorites management hooks │ ├── useFavorites.ts # Favorites management hooks
│ └── ... # Other feature hooks │ └── ... # Other feature hooks
├── redux/ # State management ├── redux/ # State management (domain-specific slices)
│ ├── store.ts # Redux store configuration │ ├── store.ts # Redux store configuration
│ ├── slices/ # Redux slices │ ├── songsSlice.ts # Song catalog management
│ ├── queueSlice.ts # Queue operations and state
│ ├── favoritesSlice.ts # Favorites management
│ ├── historySlice.ts # History tracking
│ ├── selectors.ts # Memoized selectors │ ├── selectors.ts # Memoized selectors
│ └── hooks.ts # Redux hooks │ └── hooks.ts # Redux hooks
├── types/ # TypeScript type definitions ├── types/ # TypeScript type definitions
└── utils/ # Utility functions └── utils/ # Utility functions
``` ```
### **Refactored Architecture Benefits:**
#### **Domain-Specific Redux Slices:**
- **Modular Design** - Each slice handles a specific domain (songs, queue, favorites, history)
- **Better Performance** - Smaller slices mean faster state updates and re-renders
- **Easier Testing** - Isolated business logic for each domain
- **Improved Maintainability** - Clear separation of concerns
#### **Composable Hooks:**
- **Reusable Logic** - Common patterns extracted into reusable hooks
- **Performance Optimized** - Each hook can be optimized independently
- **Type Safety** - Full TypeScript support with proper typing
- **Error Handling** - Centralized error management across the app
#### **Optimized Components:**
- **React.memo** - Prevents unnecessary re-renders for expensive components
- **Generic Components** - Reusable across different data types (ListItem, VirtualizedList)
- **Performance Monitoring** - Built-in performance tracking
- **Error Boundaries** - Graceful error handling and recovery
### **File Organization Rules:** ### **File Organization Rules:**
| Folder | Purpose | Key Files | Import Pattern | | Folder | Purpose | Key Files | Import Pattern |
|--------|---------|-----------|----------------| |--------|---------|-----------|----------------|
| `/components` | Reusable UI components | `SongItem.tsx`, `ActionButton.tsx` | `import { SongItem } from '../components/common'` | | `/components` | Reusable UI components | `SongItem.tsx`, `ActionButton.tsx`, `ListItem.tsx` | `import { SongItem } from '../components/common'` |
| `/features` | Feature-specific pages | `Queue.tsx`, `Search.tsx` | `import { Queue } from '../features/Queue'` | | `/features` | Feature-specific pages | `Queue.tsx`, `Search.tsx` | `import { Queue } from '../features/Queue'` |
| `/firebase` | Firebase integration | `services.ts`, `config.ts` | `import { queueService } from '../firebase/services'` | | `/firebase` | Firebase integration | `services.ts`, `config.ts` | `import { queueService } from '../firebase/services'` |
| `/hooks` | Custom business logic | `useQueue.ts`, `useSearch.ts` | `import { useQueue } from '../hooks/useQueue'` | | `/hooks` | Composable business logic | `useFilteredSongs.ts`, `usePaginatedData.ts` | `import { useFilteredSongs } from '../hooks'` |
| `/redux` | State management | `controllerSlice.ts`, `authSlice.ts`, `selectors.ts` | `import { useAppDispatch, selectQueue } from '../redux'` | | `/redux` | Domain-specific state | `songsSlice.ts`, `queueSlice.ts` | `import { songsSlice } from '../redux'` |
| `/types` | TypeScript definitions | `index.ts` (extends docs/types.ts) | `import type { Song, QueueItem } from '../types'` | | `/types` | TypeScript definitions | `index.ts` (extends docs/types.ts) | `import type { Song, QueueItem } from '../types'` |
### **Import Patterns:** ### **Import Patterns:**
@ -709,11 +922,55 @@ const Queue: React.FC = () => {
``` ```
### **Performance Optimizations:** ### **Performance Optimizations:**
- **React.memo** for expensive components
- **useMemo** and **useCallback** for expensive calculations #### **Component-Level Optimizations:**
- **Redux selectors** with memoization - **React.memo** - Prevents unnecessary re-renders for expensive components like `SongItem`
- **Lazy loading** for route-based code splitting - **useMemo/useCallback** - Memoizes expensive computations and event handlers
- **Service worker** for PWA caching - **Virtualized Lists** - `VirtualizedList` component renders only visible items for large datasets
- **Generic Components** - `ListItem` component works with any data type for reusability
#### **State Management Optimizations:**
- **Domain-Specific Slices** - Smaller, focused Redux slices (songs, queue, favorites, history)
- **Composable Hooks** - Reusable logic (`useFilteredSongs`, `usePaginatedData`, `useErrorHandler`)
- **Optimized Selectors** - Memoized Redux selectors for efficient state access
- **Lazy Loading** - Components and data loaded only when needed
#### **Data Handling Optimizations:**
- **Pagination** - `usePaginatedData` hook loads data in chunks to prevent UI blocking
- **Search Debouncing** - Reduces unnecessary API calls during typing
- **Filtering Optimization** - `useFilteredSongs` hook provides efficient filtering algorithms
- **Memory Management** - Proper cleanup of listeners and subscriptions
#### **Performance Monitoring:**
- **Built-in Performance Hooks** - `usePerformanceMonitor` tracks component render times
- **Error Tracking** - Centralized error handling with performance impact monitoring
- **Bundle Analysis** - Optimized bundle size with code splitting
#### **Specific Optimizations:**
- **SongItem Component** - Fully memoized with React.memo, useMemo, and useCallback
- **ListItem Component** - Generic component supporting multiple data types
- **VirtualizedList Component** - High-performance list rendering with windowing
- **ActionButton Component** - Reusable buttons with consistent styling and behavior
### **Refactoring Benefits & Migration Notes:**
#### **Architecture Improvements:**
- **Modular Redux Slices** - Replaced monolithic `controllerSlice` with domain-specific slices
- **Composable Hooks** - Extracted common patterns into reusable hooks
- **Performance Optimizations** - Added React.memo, useMemo, useCallback throughout
- **Type Safety** - Enhanced TypeScript support with strict typing
#### **Component Enhancements:**
- **Generic ListItem** - Replaced song-specific component with generic, reusable component
- **VirtualizedList** - Added high-performance list rendering for large datasets
- **Performance Monitoring** - Built-in performance tracking with `usePerformanceMonitor`
- **Error Boundaries** - Centralized error handling across the application
#### **Development Experience:**
- **Better Maintainability** - Clear separation of concerns with domain-specific slices
- **Easier Testing** - Isolated business logic for each domain
- **Improved Performance** - Optimized rendering and state management
- **Enhanced Type Safety** - Full TypeScript coverage with proper typing
### **Critical Implementation Rules:** ### **Critical Implementation Rules:**
- **Never import directly from slice files** - always use the main redux index - **Never import directly from slice files** - always use the main redux index
@ -721,6 +978,8 @@ const Queue: React.FC = () => {
- **Implement business logic in hooks**, not components - **Implement business logic in hooks**, not components
- **Use memoization** for expensive operations - **Use memoization** for expensive operations
- **Handle loading and error states** in all async operations - **Handle loading and error states** in all async operations
- **Use React.memo** for performance-critical components
- **Leverage composable hooks** for reusable business logic
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