Uniswap v4 Hooks Examples

This repository contains example implementations of Uniswap v4 hooks demonstrating advanced DeFi functionality. It includes two main hooks: Take Profits Hook and Points Hook.

Overview

Take Profits Hook

A smart contract that enables limit order-like functionality for taking profits at specified price points in Uniswap v4 pools.

Points Hook

A rewards system that distributes points to users who provide liquidity or trade in specific pools, with additional referral mechanics.

Core Concepts

Take Profits Hook

Key Features

• Place limit orders at specific price points (ticks)
• Automatic order execution when price crosses specified ticks
• ERC1155-based position management
• Support for both trading directions (token0 → token1 and token1 → token0)
• Multiple orders at different price points
• Partial order execution and cancellation

Take Profits Implementation

1. Order Placement

   • Validates tick spacing
   • Transfers input tokens
   • Mints ERC1155 claim tokens
   • Updates pending orders

2. Order Execution

   • Monitors price changes via afterSwap
   • Executes matching orders
   • Updates claimable balances
   • Handles token settlements

3. Position Management

   • Unique position IDs per pool/tick/direction
   • Claim token accounting
   • Order cancellation logic

Points Hook

Key Features

• Rewards for liquidity provision and trading
• Referral system with bonus points
• Native ETH pool integration
• Automatic point distribution
• ERC20-based points token

Points Implementation

1. Reward Distribution

   • Tracks user referrals
   • Calculates points based on activity
   • Handles referral bonuses

2. Activity Monitoring

   • afterSwap hook for trade rewards
   • afterAddLiquidity for LP rewards
   • ETH amount tracking

Testing

Take Profits Tests

• Order placement and cancellation
• Single and multiple order execution
• Direction-specific order execution
• Edge cases and token accounting

Points Tests

• Basic point distribution
• Referral system
• Liquidity provision rewards
• Swap rewards

Security Considerations

• Access control via onlyByPoolManager
• Safe token transfer handling
• Proper accounting and state management
• Input validation
• Reentrancy protection

Dependencies

• Uniswap v4 Core & Periphery
• OpenZeppelin Contracts
• Solmate
• Forge Standard Library