# 🚀 CDP Wallet Integration To-Do List

Your Next.js project needs **Coinbase Developer Platform (CDP) Wallet API v2** integration!

## 📋 Implementation Checklist

### Prerequisites Setup
- [ ] Verify Node.js 22+ is installed
- [ ] Confirm Next.js 15+ with App Router is configured
- [ ] Ensure TypeScript is set up and working
- [ ] Verify Tailwind CSS is configured

### Dependencies Installation
- [ ] Install CDP SDK: `npm install @coinbase/cdp-sdk`
- [ ] Install environment utilities: `npm install dotenv`
- [ ] Install Ethereum utilities: `npm install viem`
- [ ] Install styling utilities: `npm install clsx tailwind-merge`

### Environment Configuration
- [ ] Create `.env.local` in project root
- [ ] Add `CDP_API_KEY_ID` to environment file
- [ ] Add `CDP_API_KEY_SECRET` to environment file
- [ ] Add `CDP_WALLET_SECRET` to environment file
- [ ] Verify `.env.local` is in `.gitignore`

### Core Files to Create

#### Backend Configuration
- [ ] Create `src/lib/cdp.ts` - CDP client configuration
- [ ] Create `src/lib/wallet-utils.ts` - Wallet utility functions
- [ ] Create `src/lib/utils.ts` - Styling utilities (cn function)

#### React Components & Hooks
- [ ] Create `src/lib/hooks/use-wallet.ts` - Wallet state management hook
- [ ] Create `src/components/ui/wallet-dashboard.tsx` - Main dashboard component

#### Examples & Documentation
- [ ] Create `examples/wallet-demo.ts` - Demo usage example
- [ ] Review `/doc/cdp/integration/SETUP-CDP-WALLET.md` - User setup guide (already provided)

### Main Page Integration
- [ ] Update `src/app/page.tsx` to use WalletDashboard component
- [ ] Verify responsive design works correctly
- [ ] Test error handling and loading states

### CDP API Functions to Implement

#### Account Management
- [ ] Implement `createOrGetEvmAccount()` function
- [ ] Implement `importEvmAccount()` function for private key import
- [ ] Implement `listAccounts()` function with proper pagination handling
- [ ] Implement `createSolanaAccount()` function

#### Transaction Functions
- [ ] Implement `requestFaucet()` function for testnet funds
- [ ] Implement `sendEvmTransaction()` function
- [ ] Implement `getAccountBalance()` function
- [ ] Implement `requestSolanaFaucet()` function

#### Smart Account Features (Advanced)
- [ ] Implement `createSmartAccount()` function
- [ ] Add gas sponsorship support
- [ ] Implement batch transaction support

### UI Components to Build

#### Dashboard Layout
- [ ] Create account creation form
- [ ] Create private key import form
- [ ] Create account selection interface
- [ ] Create balance display component

#### Transaction Interface
- [ ] Create faucet request button
- [ ] Create send transaction form
- [ ] Create transaction history display
- [ ] Add explorer link integration

#### Error Handling
- [ ] Implement error message display
- [ ] Add loading states for all operations
- [ ] Create validation for form inputs
- [ ] Add success notifications

### Testing & Validation

#### Development Testing
- [ ] Run `npm run build` and verify no errors
- [ ] Test account creation flow
- [ ] Test private key import functionality
- [ ] Test faucet request functionality
- [ ] Test transaction sending

#### Production Readiness
- [ ] Verify all secrets stay server-side
- [ ] Confirm no private keys exposed to client
- [ ] Test error boundaries and edge cases
- [ ] Validate TypeScript compilation
- [ ] Check ESLint warnings are resolved

### Documentation & Setup

#### User Documentation
- [ ] Complete setup instructions for CDP credentials
- [ ] Document environment variable requirements
- [ ] Create troubleshooting guide
- [ ] Add security best practices

#### Developer Documentation
- [ ] Document all utility functions
- [ ] Add TypeScript interface definitions
- [ ] Create integration examples
- [ ] Document customization options

## 🚨 Critical Issues to Avoid

### TypeScript Safety
- [ ] Always handle potentially undefined API responses with fallbacks
- [ ] Use `result.accounts || []` pattern for array responses
- [ ] Implement proper error type checking

### CDP SDK Integration
- [ ] Reference official CDP docs for exact API response formats
- [ ] Handle paginated responses correctly (objects, not arrays)
- [ ] Use optional chaining (`?.`) for uncertain data structures

### Development Workflow
- [ ] Run `npm run build` frequently during development
- [ ] Test TypeScript compilation before committing
- [ ] Handle unused parameters in mock implementations appropriately

## 🎯 Success Criteria

- [ ] `npm run dev` launches without errors
- [ ] Dashboard renders at `http://localhost:3000`
- [ ] Can create and fund accounts via UI
- [ ] Transactions appear on Base Sepolia explorer
- [ ] No CDP secrets leaked to client bundle
- [ ] All TypeScript/ESLint errors resolved

## 🔐 Security Checklist

- [ ] All wallet operations happen server-side
- [ ] Private keys never exposed to client code
- [ ] Environment variables properly protected
- [ ] Server actions secure sensitive operations
- [ ] No API keys in client bundle

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**🎯 Goal**: Build a production-ready wallet dashboard with enterprise-grade security using Coinbase's CDP platform for Base, Ethereum, and Solana networks!