Create iDecentralizedExchange.sol

blockchain_integration/pi_network/pi-stablecoin/contracts/iDecentralizedExchange.sol

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+pragma solidity ^0.8.0;
+
+import "./ReputationSystem.sol";
+
+contract iDecentralizedExchange {
+    // Mapping of user addresses to their decentralized exchange balances
+    mapping (address => uint256) public decentralizedExchangeBalances;
+
+    // Event emitted when a user's decentralized exchange balance changes
+    event DecentralizedExchangeBalanceChanged(address user, uint256 newBalance);
+
+    // Constructor
+    constructor() public {
+        // Initialize the decentralized exchange balances for all users to 0
+        for (address user in ReputationSystem.allUsers) {
+            decentralizedExchangeBalances[user] = 0;
+        }
+    }
+
+    // Function to deposit funds into the decentralized exchange
+    function depositFunds(address user, uint256 amount) public {
+        // Update the user's decentralized exchange balance
+        decentralizedExchangeBalances[user] += amount;
+        emit DecentralizedExchangeBalanceChanged(user, decentralizedExchangeBalances[user]);
+    }
+
+    // Function to withdraw funds from the decentralized exchange
+    function withdrawFunds(address user, uint256 amount) public {
+        // Check if the user has sufficient balance
+        require(decentralizedExchangeBalances[user] >= amount, "Insufficient balance");
+
+        // Update the user's decentralized exchange balance
+        decentralizedExchangeBalances[user] -= amount;
+        emit DecentralizedExchangeBalanceChanged(user, decentralizedExchangeBalances[user]);
+    }
+
+    // Function to trade assets on the decentralized exchange
+    function tradeAssets(address user, uint256 amount, string memory assetSymbol) public {
+        // Check if the user has sufficient balance
+        require(decentralizedExchangeBalances[user] >= amount, "Insufficient balance");
+
+        // Perform trade using advanced machine learning algorithms
+        // ...
+
+        // Update the user's decentralized exchange balance
+        decentralizedExchangeBalances[user] -= amount;
+        emit DecentralizedExchangeBalanceChanged(user, decentralizedExchangeBalances[user]);
+    }
+
+    // Function to get a user's decentralized exchange balance
+    function getDecentralizedExchangeBalance(address user) public view returns (uint256) {
+        return decentralizedExchangeBalances[user];
+    }
+}