SwapinAD

.gitignore

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+node_modules
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local

API_INTEGRATION_README.md

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+# 0x API Integration Setup
+
+This project integrates with the 0x API for real-time swap pricing and quote generation. Follow these steps to set up the API integration:
+
+## Environment Setup
+
+1. **Get a 0x API Key**
+   - Visit [0x.org](https://0x.org/docs/introduction/getting-started)
+   - Sign up and get your API key
+
+2. **Configure Environment Variables**
+   ```bash
+   # Copy the example file
+   cp .env.local.example .env.local
+   ```
+
+   Edit `.env.local` and add your API key:
+   ```bash
+   NEXT_PUBLIC_ZERO_EX_API_KEY=your_api_key_here
+   NEXT_PUBLIC_DEFAULT_CHAIN_ID=1
+   NEXT_PUBLIC_ENABLE_SWAP_API=true
+   ```
+
+## Features Implemented
+
+### ✅ Real-time Price Fetching
+- Live price updates as you type amounts
+- Support for multiple chains (Ethereum, Base, Polygon)
+- Debounced API calls to prevent excessive requests
+
+### ✅ Token Management
+- Pre-configured token lists for popular tokens
+- Support for ERC-20 tokens
+- Automatic token validation
+
+### ✅ Error Handling
+- Network error handling
+- API rate limit handling
+- User-friendly error messages
+
+### ✅ Loading States
+- Price loading indicators
+- Quote loading states
+- Processing states during swaps
+
+## API Integration Details
+
+### Services Created:
+
+1. **`src/services/zeroExApi.ts`** - Core API client
+   - `fetchSwapPrice()` - Get indicative pricing
+   - `fetchSwapQuote()` - Get firm quotes for execution
+   - Error handling and response validation
+
+2. **`src/services/config.ts`** - Configuration management
+   - Environment variable handling
+   - Chain configuration
+   - Feature flags
+
+3. **`src/services/tokenData.ts`** - Token and network data
+   - Supported token lists
+   - Network configurations
+   - Helper functions for token lookup
+
+### Hook Updates:
+
+**`src/hooks/useSwap.ts`** - Enhanced with API integration
+- Real-time price fetching
+- Debounced API calls
+- State management for loading/errors
+- Quote management
+
+### Component Updates:
+
+**`src/components/swap/TokenSelection.tsx`**
+- Real-time price display
+- Loading indicators
+- Error handling UI
+- Dynamic token information
+
+## Usage
+
+1. **Start the development server:**
+   ```bash
+   npm run dev
+   ```
+
+2. **Enter swap details:**
+   - The app will automatically fetch prices as you type
+   - Real-time exchange rates are displayed
+   - Proceed through the swap flow
+
+## API Endpoints Used
+
+Based on the specifications in `llm.md`:
+
+- **GET** `/swap/allowance-holder/price` - Indicative pricing
+- **GET** `/swap/allowance-holder/quote` - Firm quotes
+
+## Supported Networks
+
+- **Ethereum (Chain ID: 1)** - ETH, USDC, USDT, WBTC, DAI, UNI
+- **Base (Chain ID: 8453)** - ETH, USDC, DAI, WETH
+- **Polygon (Chain ID: 137)** - MATIC, USDC, USDT, WETH
+
+## Error Handling
+
+The app handles various error scenarios:
+- Missing API key
+- Network connectivity issues
+- Invalid token pairs
+- API rate limits
+- Insufficient liquidity
+
+## Next Steps
+
+To complete the swap functionality:
+1. Add wallet connection (WalletConnect, MetaMask)
+2. Implement transaction signing
+3. Add transaction monitoring
+4. Add slippage protection
+5. Implement multi-chain support
+
+## Development Notes
+
+- API calls are debounced (500ms) to prevent excessive requests
+- Prices are fetched automatically when amount/tokens change
+- All monetary amounts are properly formatted for display
+- Error states are clearly communicated to users

RAINBOWKIT_INTEGRATION.md

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+# RainbowKit Wallet Integration
+
+This document covers the complete RainbowKit integration for wallet connectivity and transaction execution in the SwapInAd application.
+
+## 🚀 Features Implemented
+
+### ✅ **Wallet Connection**
+- **RainbowKit Integration** - Modern wallet connection interface
+- **Multiple Wallet Support** - MetaMask, WalletConnect, Coinbase Wallet, and more
+- **Chain Switching** - Automatic network switching for supported chains
+- **Custom Styling** - Dark theme matching the app's design
+
+### ✅ **Multi-Chain Support**
+- **Ethereum Mainnet** (Chain ID: 1)
+- **Base** (Chain ID: 8453) 
+- **Polygon** (Chain ID: 137)
+- Automatic token list updates based on selected chain
+
+### ✅ **Real-Time Balance Display**
+- Live wallet balance for selected tokens
+- "MAX" button for quick amount selection
+- Balance updates when switching tokens or chains
+
+### ✅ **Transaction Execution**
+- **Two-Step Process**: Token approval + Swap execution
+- **Real-time Progress**: Live updates during transaction processing
+- **Transaction Tracking**: Hash display with block explorer links
+- **Error Handling**: Comprehensive error messages and recovery
+
+### ✅ **Enhanced User Experience**
+- Wallet connection status in header
+- Chain indicator with switching capability
+- Loading states during wallet operations
+- Transaction progress visualization
+
+## 📁 File Structure
+
+```
+src/
+├── components/
+│   ├── providers/
+│   │   └── Providers.tsx          # RainbowKit & Wagmi providers
+│   ├── wallet/
+│   │   └── WalletConnect.tsx      # Custom wallet connect button
+│   ├── layout/
+│   │   └── Header.tsx             # Header with wallet integration
+│   └── swap/
+│       ├── Processing.tsx         # Enhanced processing with real tx status
+│       └── ...
+├── hooks/
+│   ├── useSwap.ts                 # Enhanced with wallet integration
+│   └── useSwapExecution.ts        # Transaction execution logic
+├── services/
+│   ├── swapExecution.ts           # Core transaction execution
+│   └── ...
+└── lib/
+    └── wagmi.ts                   # Wagmi configuration
+```
+
+## 🔧 Setup Instructions
+
+### 1. **Environment Configuration**
+
+Create/update your `.env.local` file:
+
+```bash
+# 0x API Configuration
+NEXT_PUBLIC_ZERO_EX_API_KEY=your_0x_api_key
+
+# WalletConnect Configuration
+NEXT_PUBLIC_WALLETCONNECT_PROJECT_ID=your_walletconnect_project_id
+
+# Chain Configuration  
+NEXT_PUBLIC_DEFAULT_CHAIN_ID=1
+NEXT_PUBLIC_ENABLE_SWAP_API=true
+```
+
+### 2. **Get WalletConnect Project ID**
+
+1. Visit [WalletConnect Cloud](https://cloud.walletconnect.com)
+2. Create a new project
+3. Copy your Project ID
+4. Add it to `.env.local`
+
+### 3. **Dependencies Installed**
+
+```bash
+npm install @rainbow-me/rainbowkit wagmi viem@2.x @tanstack/react-query
+```
+
+## 🎯 Key Components
+
+### **Providers Setup**
+```typescript
+// src/components/providers/Providers.tsx
+<WagmiProvider config={config}>
+  <QueryClientProvider client={queryClient}>
+    <RainbowKitProvider theme={darkTheme}>
+      {children}
+    </RainbowKitProvider>
+  </QueryClientProvider>
+</WagmiProvider>
+```
+
+### **Wallet Connection**
+```typescript
+// Custom wallet button with app styling
+<ConnectButton.Custom>
+  {({ account, chain, openConnectModal, openAccountModal }) => (
+    // Custom UI matching app design
+  )}
+</ConnectButton.Custom>
+```
+
+### **Swap Execution Flow**
+1. **Price Fetching** - Real-time pricing with wallet address
+2. **Quote Generation** - Firm quotes for connected wallet
+3. **Token Approval** - ERC-20 approval if needed
+4. **Swap Execution** - On-chain transaction execution
+5. **Confirmation** - Transaction confirmation and success
+
+## 🔄 Transaction Flow
+
+### **Step 1: Token Selection & Pricing**
+- User selects tokens and amount
+- Real-time price fetching with wallet address as taker
+- Balance display and MAX button integration
+
+### **Step 2: Review & Confirm**
+- Display swap details and estimated costs
+- Quote generation with firm pricing
+- Wallet connection validation
+
+### **Step 3: Transaction Execution**
+```typescript
+const executeSwap = async (quote, fromToken) => {
+  // 1. Check & approve token allowance (if needed)
+  if (needsApproval) {
+    await approveToken(fromToken.address, quote.allowanceTarget);
+  }
+
+  // 2. Execute swap transaction
+  const txHash = await sendTransaction({
+    to: quote.to,
+    data: quote.data,
+    value: quote.value
+  });
+
+  // 3. Wait for confirmation
+  await waitForTransactionReceipt(txHash);
+};
+```
+
+### **Step 4: Success & Completion**
+- Transaction confirmation display
+- Block explorer link for verification
+- Option to start new swap
+
+## 💡 Advanced Features
+
+### **Chain Switching**
+```typescript
+const { switchChain } = useSwitchChain();
+
+// Automatic chain switching for optimal routing
+await switchChain({ chainId: targetChain });
+```
+
+### **Balance Integration**
+```typescript
+const { data: balance } = useBalance({
+  address: userAddress,
+  token: tokenAddress // undefined for native token
+});
+```
+
+### **Transaction Monitoring**
+```typescript
+// Real-time progress updates
+const progress = {
+  step: 'approval' | 'swap' | 'complete',
+  message: 'Current operation description',
+  transactionHash: '0x...'
+};
+```
+
+## 🛡️ Security Considerations
+
+- **API Key Security** - Never expose private keys in client code
+- **Transaction Validation** - All transactions validated before execution
+- **Slippage Protection** - Built-in slippage tolerance
+- **Gas Estimation** - Proper gas estimation before transactions
+
+## 🚧 Error Handling
+
+The app handles various error scenarios:
+- **Wallet Not Connected** - Prompts user to connect
+- **Wrong Network** - Offers network switching
+- **Insufficient Balance** - Clear error messages
+- **Transaction Failures** - Retry mechanisms
+- **API Errors** - Fallback messaging
+
+## 🎨 UI/UX Features
+
+- **Consistent Theming** - Dark theme matching app design
+- **Loading States** - Visual feedback during operations
+- **Progress Indicators** - Step-by-step transaction progress
+- **Responsive Design** - Works on desktop and mobile
+- **Accessibility** - Keyboard navigation and screen reader support
+
+## 🔮 Future Enhancements
+
+Potential improvements for production:
+1. **Slippage Settings** - User-configurable slippage tolerance
+2. **Gas Price Control** - Custom gas price settings
+3. **Transaction History** - Local storage of past swaps
+4. **Multi-Hop Routing** - Cross-chain swap support
+5. **Price Alerts** - Token price notifications
+6. **Advanced Orders** - Limit orders and DCA
+
+The RainbowKit integration provides a complete, production-ready wallet connectivity solution with smooth transaction execution and excellent user experience.

README copy.md

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+This is a [Next.js](https://nextjs.org) project bootstrapped with [`create-next-app`](https://nextjs.org/docs/app/api-reference/cli/create-next-app).
+
+## Getting Started
+
+First, run the development server:
+
+```bash
+npm run dev
+# or
+yarn dev
+# or
+pnpm dev
+# or
+bun dev
+```
+
+Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+
+You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.
+
+This project uses [`next/font`](https://nextjs.org/docs/app/building-your-application/optimizing/fonts) to automatically optimize and load [Geist](https://vercel.com/font), a new font family for Vercel.
+
+## Learn More
+
+To learn more about Next.js, take a look at the following resources:
+
+- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
+- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+
+You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js) - your feedback and contributions are welcome!
+
+## Deploy on Vercel
+
+The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
+
+Check out our [Next.js deployment documentation](https://nextjs.org/docs/app/building-your-application/deploying) for more details.