MultiCurrencyHandler

{{
  "language": "Solidity",
  "sources": {
    "MultiCurrencyHandler.sol": {
      "content": "// SPDX-License-Identifier: MIT\r
pragma solidity ^0.8.20;\r
\r
import "@openzeppelin/contracts/access/Ownable.sol";\r
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";\r
import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";\r
\r
interface IMultiCurrencyHandler {\r
    function handleContribution(address token, uint256 amount) external;\r
}\r
\r
contract MultiCurrencyHandler is Ownable, IMultiCurrencyHandler {\r
    address public treasuryWallet;\r
    mapping(address => uint256) public allocationPercentages;\r
    address[] public allocatedWallets;\r
\r
    // Mapping from token to Chainlink price feed\r
    mapping(address => address) public tokenPriceFeeds;\r
    mapping(address => bool) public isAcceptedToken;\r
\r
    event TreasuryWalletUpdated(address newWallet);\r
    event AllocationSet(address wallet, uint256 percentage);\r
    event TokenFeedSet(address token, address feed);\r
\r
    constructor(address owner_, address _treasuryWallet) Ownable(owner_) {\r
        require(_treasuryWallet != address(0), "Invalid wallet");\r
        treasuryWallet = _treasuryWallet;\r
    }\r
\r
    function handleContribution(address token, uint256 amount) external override {\r
        require(token != address(0), "Token is zero address");\r
        require(amount > 0, "Amount must be > 0");\r
\r
        IERC20 tokenInstance = IERC20(token);\r
\r
        uint256 totalAllocated = 0;\r
        for (uint256 i = 0; i < allocatedWallets.length; i++) {\r
            address wallet = allocatedWallets[i];\r
            uint256 percent = allocationPercentages[wallet];\r
            if (percent > 0) {\r
                uint256 share = (amount * percent) / 10000;\r
                tokenInstance.transferFrom(msg.sender, wallet, share);\r
                totalAllocated += share;\r
            }\r
        }\r
\r
        uint256 remaining = amount - totalAllocated;\r
        if (remaining > 0) {\r
            tokenInstance.transferFrom(msg.sender, treasuryWallet, remaining);\r
        }\r
    }\r
\r
    function setTreasuryWallet(address newWallet) external onlyOwner {\r
        require(newWallet != address(0), "Invalid wallet address");\r
        treasuryWallet = newWallet;\r
        emit TreasuryWalletUpdated(newWallet);\r
    }\r
\r
    function setAllocation(address wallet, uint256 percentage) external onlyOwner {\r
        require(wallet != address(0), "Invalid wallet");\r
        require(percentage <= 10000, "Max 100% allowed");\r
\r
        if (allocationPercentages[wallet] == 0 && percentage > 0) {\r
            allocatedWallets.push(wallet);\r
        }\r
\r
        allocationPercentages[wallet] = percentage;\r
        emit AllocationSet(wallet, percentage);\r
    }\r
\r
    function getAllocatedWallets() external view returns (address[] memory, uint256[] memory) {\r
        uint256[] memory percentages = new uint256[](allocatedWallets.length);\r
        for (uint256 i = 0; i < allocatedWallets.length; i++) {\r
            percentages[i] = allocationPercentages[allocatedWallets[i]];\r
        }\r
        return (allocatedWallets, percentages);\r
    }\r
\r
    // Set a single token + price feed\r
    function setTokenPriceFeed(address token, address priceFeed) external onlyOwner {\r
        require(token != address(0), "Invalid token address");\r
        require(priceFeed != address(0), "Invalid price feed address");\r
        tokenPriceFeeds[token] = priceFeed;\r
        isAcceptedToken[token] = true;\r
        emit TokenFeedSet(token, priceFeed);\r
    }\r
\r
    // Set multiple tokens + feeds in bulk\r
    function setMultipleTokenFeeds(address[] calldata tokens, address[] calldata feeds) external onlyOwner {\r
        require(tokens.length == feeds.length, "Mismatched array lengths");\r
        for (uint256 i = 0; i < tokens.length; i++) {\r
            tokenPriceFeeds[tokens[i]] = feeds[i];\r
            isAcceptedToken[tokens[i]] = true;\r
            emit TokenFeedSet(tokens[i], feeds[i]);\r
        }\r
    }\r
\r
    // Get the USD value of a token amount using Chainlink\r
    function getTokenUsdValue(address token, uint256 amount) public view returns (uint256 usdValue) {\r
        require(isAcceptedToken[token], "Token not accepted");\r
\r
        address feed = tokenPriceFeeds[token];\r
        require(feed != address(0), "Feed not registered");\r
\r
        (, int256 price,,,) = AggregatorV3Interface(feed).latestRoundData();\r
        require(price > 0, "Invalid price");\r
\r
        uint8 decimals = AggregatorV3Interface(feed).decimals();\r
\r
        usdValue = (amount * uint256(price)) / (10 ** decimals);\r
    }\r
}\r
"
    },
    "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface AggregatorV3Interface {
  function decimals() external view returns (uint8);

  function description() external view returns (string memory);

  function version() external view returns (uint256);

  function getRoundData(
    uint80 _roundId
  ) external view returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);

  function latestRoundData()
    external
    view
    returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);
}
"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}
"
    },
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}
"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "remappings": [],
    "evmVersion": "shanghai"
  }
}}