Overview 

The MultiTokenManager contract is a comprehensive decentralized application (dApp), that, allows users to interact with multiple tokens, mint new tokens dynamically, participate in DAO Governance, stake & farm tokens, provide liquidity to Uniswap, and handle referrals, and airdrops. It integrates several key features, such as dynamic minting, collateralized asset management, and staking rewards. 

Key Features 

1. ERC-20 Token

• The contract is based on the ERC-20 token standard, meaning it supports the basic functionalities of token transfers, balances, and approvals. 

• Functions:  

• Total Supply (): Returns the total supply of the tokens. 

• Balance Of (address account): Returns the token balance of the provided address. 

• Transfer (address recipient, uint256 amount): Transfers tokens to a specified recipient. 

• Approve (address spender, uint256 amount): Approves a spender to transfer a specified amount of tokens. 

• Transfer From (address sender, address recipient, uint256 amount): Executes token transfers from one address to another on behalf of the sender. 

2. PLATO-DAO Governance

• A Governance system is implemented to allow token holders (or the contract owner), to create, and vote on proposals. 

• Functions:  

• Create Proposal (string description): Creates a new proposal with a given description, and sets a 7-day voting deadline. 

• Vote (uint256 proposalId, bool support): Allows users to vote on proposals, either in favor or against. 

• Execute Proposal (uint256 proposalId): Executes a proposal if it passes (i.e., votes in favor exceed votes against, and the voting period has ended). 

3. Dynamic Minting

• The contract allows the dynamic minting of tokens based on user activity or conditions, such as balance or membership status. 

• Functions:  

• Mint Tokens (address to, uint256 amount): Mints a dynamic amount of tokens to the specified address. The amount minted is based on the user’s dynamic minting factor. 

• Get Dynamic Minting Factor (address user): Calculates the dynamic minting factor based on the user’s balance, providing higher minting rewards for users with larger token balances. 

4. Asset Collateralization

• Users can deposit ETH as collateral, and mint tokens based on a collateralization ratio. 

• Functions:  

• Deposit Collateral (): Allows users to deposit ETH into the contract as collateral. 

• Mint Against Collateral (string memory token Name, uint256 amount): Allows users to mint tokens by collateralizing their ETH, with the minting amount determined by a predefined collateralization ratio. 

5. Liquidity Management with Uniswap

• Users can add liquidity to Uniswap pools directly from the contract, enabling automated market-making. 

• Functions:  

• Provide Liquidity (address tokenA, address tokenB, uint256 amountADesired, uint256 amountBDesired): Allows users to add liquidity to a Uniswap pool by transferring tokens, and approving them for the router. 

6. Airdrop Handling with Referral System Pre-Set At 10% 

• The contract includes a referral system for rewarding users who bring in new participants. Users can claim airdrops by referring others. 

• Functions:  

• Register Referral (address referrer): Registers a referrer for the calling user. 

• Claim Airdrop (string memory tokenName): Allows users to claim an airdrop for a specific token if they have a registered referrer. Users also receive a referral reward for bringing in new participants. 

7. Staking/Yield Farming

• Users can stake tokens in farming, pools and receive rewards based on the amount staked. 

• Functions:  

• Add Token (string memory name, string memory symbol, uint256 mintingFee, uint256 referralRewardRate, uint256 airdropAmount, uint256 collateralizationRatio): Adds new tokens that can be staked in the system. 

• Mint Tokens (address to, uint256 amount): Allows minting of tokens dynamically based on specific conditions (for instance, for staking rewards). 

• Provide Liquidity (): Users can provide liquidity, and stake tokens in Uniswap liquidity pools, which can earn them rewards. 

Contract Mappings 

• mapping(string => TokenInfo) public supportedTokens: Maps token names to their respective metadata and settings. 

• mapping(uint256 => FarmingPool) public farmingPools: Maps pool IDs to farming pool data. 

• mapping(uint256 => mapping(address => Farmer)) public farmers: Stores farming data per user (staked amount and reward debt). 

• mapping(uint256 => Proposal) public proposals: Stores details for each proposal. 

• mapping(uint256 => mapping(address => bool)) public hasVoted: Tracks whether a user has voted on a proposal. 

Events 

• Token-related events:  

• TokenAdded: Triggered when a new token is added to the system. 

• Farming-related events:  

• FarmingPoolCreated: Triggered when a new farming pool is created. 

• TokensStaked: Triggered when tokens are staked by a user. 

• TokensUnstaked: Triggered when tokens are unstaked. 

• RewardsClaimed: Triggered when a user claims their rewards. 

• Governance-related events:  

• ProposalCreated: Triggered when a new proposal is created. 

• VoteCast: Triggered when a user votes on a proposal. 

• ProposalExecuted: Triggered when a proposal is executed after the voting period ends. 

Constructor 

• Parameters:  

• string memory name: Name of the token. 

• string memory symbol: Symbol of the token. 

• address _router: Address of the Uniswap router. 

• address _factory: Address of the Uniswap factory. 

• address _priceFeed: Address of the Chainlink price feed for ETH/USD price. 

The constructor initializes the ERC-20 token, sets the Uniswap router and factory addresses, and sets the Chainlink price feed for ETH/USD. 

Security Considerations 

• The contract includes the onlyOwner modifier, meaning only the contract owner can execute critical functions like adding tokens, minting tokens, creating proposals, and more. 

• User interactions are secured with proper checks for conditions such as referral registration and collateralization limits. 

• The receive() function is included to allow the contract to accept ETH deposits. 

Conclusion 

The MultiTokenManager contract is a highly versatile tool for managing multiple tokens, handling staking and yield farming, providing liquidity to Uniswap, and enabling DAO Governance. It incorporates dynamic minting, asset collateralization, and, a referral system for a complete decentralized finance (DeFi), experience. 

Thank you. 

Contract Deployed On Polygonscan (On 03/01/2025): 

1. Logic 

1. Proxy 

1. Staking/Farming 

1. CustomToken