Update PiCoinValueSetter.sol

blockchain_integration/pi_network/features/pi-coin-value-setter/PiCoinValueSetter.sol

@@ -1,5 +1,7 @@
 pragma solidity ^0.8.0;
 
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/math/SafeMath.sol";
+
 contract PiCoinValueSetter {
     // Set the target value of Pi Coin
     uint256 public targetValue = 314159000000000000000; // $314.159
@@ -10,14 +12,22 @@ contract PiCoinValueSetter {
     // Event emitted when the mainnet is launched
     event MainnetLaunched();
 
+    // Event emitted when the Pi Coin value is updated
+    event PiCoinValueUpdated(uint256 newValue);
+
+    // Mapping of Pi Coin values
+    mapping (address => uint256) public piCoinValues;
+
     // Function to set the value of Pi Coin when the mainnet is launched
     function setPiCoinValue() public {
         // Check if the mainnet has been launched
         require(mainnetLaunchTimestamp != 0, "Mainnet has not been launched");
 
         // Set the value of Pi Coin to the target value
-        PiCoin piCoin = PiCoin(address);
-        piCoin.setValue(targetValue);
+        for (address user in piCoinValues) {
+            piCoinValues[user] = targetValue;
+            emit PiCoinValueUpdated(targetValue);
+        }
 
         // Emit the MainnetLaunched event
         emit MainnetLaunched();
@@ -27,4 +37,25 @@ contract PiCoinValueSetter {
     function setMainnetLaunchTimestamp(uint256 _timestamp) public {
         mainnetLaunchTimestamp = _timestamp;
     }
+
+    // Function to get the value of a Pi Coin
+    function getPiCoinValue(address _user) public view returns (uint256) {
+        return piCoinValues[_user];
+    }
+
+    // Function to update the value of a Pi Coin
+    function updatePiCoinValue(address _user, uint256 _newValue) public {
+        require(piCoinValues[_user] > 0, "Pi Coin value must be set before updating");
+        piCoinValues[_user] = _newValue;
+        emit PiCoinValueUpdated(_newValue);
+    }
+
+    // Function to calculate the total value of all Pi Coins
+    function getTotalPiCoinValue() public view returns (uint256) {
+        uint256 totalValue = 0;
+        for (address user in piCoinValues) {
+            totalValue = SafeMath.add(totalValue, piCoinValues[user]);
+        }
+        return totalValue;
+    }
 }