# PancakeSwap Integration Plan

## Overview

This document outlines the implementation plan for PancakeSwap exchange support in the MEV bot. PancakeSwap is a decentralized exchange running on Binance Smart Chain, offering similar functionality to Uniswap but with BNB chain-specific features.

## Contract Architecture

### Core Contracts
- Router: `0x10ED43C718612782E9E672E01bCc53Bb3a3b6B2e` (V2), `0x13f4EA83D0bd40E75C8222255bc855a9243358F6` (V3)
- Factory: `0xcA143Ce32Fe78f1f7019d7d551a6402fC535aa17` (V2), `0x0BFbCF9fa4f9C56B0F40a6C1cA9bC67Ec9872923` (V3)
- MasterChef: `0xa5f8C5Dbd5F286960b9d90548680aE5ebFf07652` (V2 farming)
- MasterChefV3: `0x556B9306565093C852F783C116e951053Ac0C548`

### Unique Features
- Syrup Pools (single asset staking)
- Prediction markets
- Lottery
- NFT marketplace integration

## Core Functions

### V2 Swap Functions
- `swapExactTokensForTokens`
- `swapTokensForExactTokens`
- `swapExactBNBForTokens`
- `swapTokensForExactBNB`
- `getAmountsOut`
- `getAmountsIn`

### V3 Swap Functions
- `exactInputSingle`
- `exactOutputSingle`
- `exactInput`
- `exactOutput`

### Liquidity Functions
- `addLiquidity`
- `addLiquidityBNB`
- `removeLiquidity`
- `removeLiquidityBNB`

### Farming Functions
- `deposit` (to MasterChef)
- `withdraw` (from MasterChef)
- `pendingCake` (pending rewards)

## Implementation Steps

1. Create PancakeSwap struct implementing the Exchange interface
2. Implement both V2 and V3 contract support
3. Handle BNB-specific swap functions
4. Implement MasterChef integration for yield farming
5. Add Syrup Pool support
6. Create BSC-specific gas estimation
7. Implement PCS-specific routing logic
8. Add support for PCS tokens and farms

## Pricing Mechanisms

### V2 Pricing
- Standard constant product AMM formula
- 0.25% swap fee (compared to 0.3% on Uniswap)
- Use reserves to calculate price impact

### V3 Pricing
- Concentrated liquidity model
- Tick-based pricing mechanism
- Variable swap fees based on pool (0.01%, 0.05%, 0.25%, 1%)

### PCS-Specific Considerations
- Lower standard swap fees (0.25% vs 0.3%)
- BNB integration for direct swaps
- Farming reward tracking in profitability calculations

## Testing Plan

1. Unit tests for V2 and V3 swap functions
2. BNB-specific swap testing
3. MasterChef integration testing
4. Syrup Pool functionality verification
5. Cross-chain arbitrage opportunity testing
6. Edge case testing (zero amounts, max amounts)
7. Price accuracy verification
8. Gas optimization testing on BSC

## Performance Considerations

- BSC's faster block times (compared to Ethereum)
- Lower gas costs for more frequent operations
- Efficient routing between V2 and V3 pools
- Cache frequently accessed pool information
- Batch operations to reduce transaction costs

## Security Considerations

- Validate BSC-specific contract addresses
- Implement proper slippage protection
- Handle BSC's different security model
- Verify farm and pool parameters
- Sanitize data from external PCS contracts

## Integration with MEV Bot

- Identify PCS-specific arbitrage opportunities
- Monitor V2 and V3 pools for profitable swaps
- Track farming rewards in profitability calculations
- Include Syrup Pools in yield strategies
- Coordinate with other exchanges for cross-chain arbitrage
- Consider CAKE token incentives in trade decisions
- Monitor new farm launches for early entry opportunities