AutoReplacer

♻️ AutoReplacer.sol

The AutoReplacer contract allows liquidity providers (LPs) to automatically replace their existing LP positions (ERC721 tokens) with new ones — without manual intervention.

This automation ensures yield continuity and reduces the need for active LP management, making liquidity provision easier and more efficient for passive users.

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🧩 What It Does

• Accepts LP NFTs (representing deposited liquidity at a strike)

• Issues a new AutoReplace NFT in return

• Tracks metadata about the original LP position

• Enables auto-replacement logic through protocol integrations

The system interacts with:

• Main.sol (for market indexing)

• MarketPool.sol (to identify and manage LP tokens)

• ERC721_AutoReplace (for minting new NFTs)

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🔧 Public Functions

startAutoReplace(uint256 index, uint256 id)

• Begins the auto-replacement process for a specific LP NFT

• Transfers the original NFT to AutoReplacer

• Mints a new AutoReplace NFT to the caller

• Stores metadata about the original position for future use

Requirements:

• The caller must be the owner of the LP NFT

• The NFT is transferred to the contract for custody

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👀 View Functions

getERC721_AutoReplace() → address

• Returns the address of the deployed ERC721_AutoReplace contract

getAutoReplaceInfos(uint256 replacerID) → AutoReplaceInfos

• Returns metadata associated with a given AutoReplace token

• Includes:

  • Market index

  • Original LP token ID

  • Rewards (if any) accumulated

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📦 Struct: AutoReplaceInfos

Each AutoReplace NFT is linked to the following data:

Field	Description
index	Market index (from Main.sol)
id	Original LP NFT ID being replaced
rewards	Accumulated or claimable rewards (if tracked)

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🔐 IERC721Receiver Support

This contract implements the IERC721Receiver interface, allowing it to safely receive NFTs.

This is required when LP NFTs are transferred into AutoReplacer as part of the replacement process.

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📌 Summary

Feature	Description
LP Automation	Automatically replaces LP NFTs with minimal interaction
Reward Tracking	Keeps metadata and rewards tied to original LP positions
NFT Custody	Holds LP NFTs until replaced or withdrawn
Passive Friendly	Perfect for yield farmers seeking automation