Create Governance.sol

blockchain_integration/pi_network/pi-stablecoin/governance/Governance.sol

@@ -0,0 +1,209 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/math/SafeMath.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/access/AccessControl.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/utils/ReentrancyGuard.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/utils/Pausable.sol";
+
+contract Governance is AccessControl, ReentrancyGuard, Pausable {
+    // Mapping of proposal IDs to proposal details
+    mapping(uint256 => Proposal) public proposals;
+
+    // Mapping of user addresses to their voting power
+    mapping(address => uint256) public votingPower;
+
+    // Mapping of user addresses to their delegate addresses
+    mapping(address => address) public delegates;
+
+    // Mapping of proposal IDs to vote counts
+    mapping(uint256 => mapping(bool => uint256)) public voteCounts;
+
+    // Mapping of proposal IDs to vote records
+    mapping(uint256 => mapping(address => bool)) public voteRecords;
+
+    // Total voting power
+    uint256 public totalVotingPower;
+
+    // Proposal counter
+    uint256 public proposalCounter;
+
+    // Quorum threshold
+    uint256 public quorumThreshold;
+
+    // Proposal threshold
+    uint256 public proposalThreshold;
+
+    // Voting period
+    uint256 public votingPeriod;
+
+    // Event emitted when a new proposal is created
+    event NewProposal(uint256 proposalId, string description);
+
+    // Event emitted when a vote is cast
+    event VoteCast(uint256 proposalId, address voter, bool support);
+
+    // Event emitted when a proposal is executed
+    event ProposalExecuted(uint256 proposalId);
+
+    // Event emitted when a proposal is canceled
+    event ProposalCanceled(uint256 proposalId);
+
+    // Event emitted when a delegate is set
+    event DelegateSet(address indexed delegator, address indexed delegate);
+
+    // Event emitted when a delegate is removed
+    event DelegateRemoved(address indexed delegator, address indexed delegate);
+
+    // Struct to represent a proposal
+    struct Proposal {
+        uint256 id;
+        string description;
+        uint256 startTime;
+        uint256 endTime;
+        uint256 yesVotes;
+        uint256 noVotes;
+        bool executed;
+        bool canceled;
+    }
+
+    // Modifier to check if a user has voting power
+    modifier hasVotingPower {
+        require(votingPower[msg.sender] > 0, "User has no voting power");
+        _;
+    }
+
+    // Modifier to check if a proposal exists
+    modifier proposalExists(uint256 _proposalId) {
+        require(proposals[_proposalId].id != 0, "Proposal does not exist");
+        _;
+    }
+
+    // Modifier to check if a proposal is active
+    modifier proposalActive(uint256 _proposalId) {
+        require(proposals[_proposalId].startTime <= block.timestamp && block.timestamp <= proposals[_proposalId].endTime, "Proposal is not active");
+        _;
+    }
+
+    // Modifier to check if a user has already voted
+    modifier hasNotVoted(uint256 _proposalId) {
+        require(!voteRecords[_proposalId][msg.sender], "User has already voted");
+        _;
+    }
+
+    // Function to create a new proposal
+    function createProposal(string memory _description) public hasVotingPower {
+        // Increment proposal counter
+        proposalCounter++;
+
+        // Create a new proposal
+        Proposal memory proposal = Proposal(
+            proposalCounter,
+            _description,
+            block.timestamp,
+            block.timestamp + votingPeriod,
+            0,
+            0,
+            false,
+            false
+        );
+
+        // Store the proposal
+        proposals[proposalCounter] = proposal;
+
+        // Emit a new proposal event
+        emit NewProposal(proposalCounter, _description);
+    }
+
+    // Function to cast a vote
+    function castVote(uint256 _proposalId, bool _support) public proposalExists(_proposalId) proposalActive(_proposalId) hasNotVoted(_proposalId) {
+        // Update the vote count
+        voteCounts[_proposalId][_support]++;
+
+        // Update the vote record
+        voteRecords[_proposalId][msg.sender] = true;
+
+        // Emit a vote cast event
+        emit VoteCast(_proposalId, msg.sender, _support);
+    }
+
+    // Function to execute a proposal
+    function executeProposal(uint256 _proposalId) public proposalExists(_proposalId) {
+        // Check if the proposal has been executed
+        require(!proposals[_proposalId].executed, "Proposal has already been executed");
+
+                // Check if the proposal has passed
+        require(voteCounts[_proposalId][true] > voteCounts[_proposalId][false], "Proposal has not passed");
+
+        // Execute the proposal
+        // ...
+
+        // Update the proposal's executed status
+        proposals[_proposalId].executed = true;
+
+        // Emit a proposal executed event
+        emit ProposalExecuted(_proposalId);
+    }
+
+    // Function to cancel a proposal
+    function cancelProposal(uint256 _proposalId) public proposalExists(_proposalId) {
+        // Check if the proposal has been executed
+        require(!proposals[_proposalId].executed, "Proposal has already been executed");
+
+        // Check if the proposal has been canceled
+        require(!proposals[_proposalId].canceled, "Proposal has already been canceled");
+
+        // Update the proposal's canceled status
+        proposals[_proposalId].canceled = true;
+
+        // Emit a proposal canceled event
+        emit ProposalCanceled(_proposalId);
+    }
+
+    // Function to set a delegate
+    function setDelegate(address _delegate) public {
+        // Check if the delegate is not the same as the delegator
+        require(_delegate != msg.sender, "Delegate cannot be the same as the delegator");
+
+        // Update the delegate
+        delegates[msg.sender] = _delegate;
+
+        // Emit a delegate set event
+        emit DelegateSet(msg.sender, _delegate);
+    }
+
+    // Function to remove a delegate
+    function removeDelegate() public {
+        // Update the delegate
+        delete delegates[msg.sender];
+
+        // Emit a delegate removed event
+        emit DelegateRemoved(msg.sender, delegates[msg.sender]);
+    }
+
+    // Function to get the voting power of a user
+    function getVotingPower(address _user) public view returns (uint256) {
+        return votingPower[_user];
+    }
+
+    // Function to get the delegate of a user
+    function getDelegate(address _user) public view returns (address) {
+        return delegates[_user];
+    }
+
+    // Function to get the proposal details
+    function getProposal(uint256 _proposalId) public view returns (Proposal memory) {
+        return proposals[_proposalId];
+    }
+
+    // Function to get the vote count of a proposal
+    function getVoteCount(uint256 _proposalId, bool _support) public view returns (uint256) {
+        return voteCounts[_proposalId][_support];
+    }
+
+    // Function to get the vote record of a user
+    function getVoteRecord(uint256 _proposalId, address _user) public view returns (bool) {
+        return voteRecords[_proposalId][_user];
+    }
+}