diff --git a/blockchain_integration/pi_network/pi-stablecoin/governance/Governance.sol b/blockchain_integration/pi_network/pi-stablecoin/governance/Governance.sol new file mode 100644 index 000000000..8a757d8fa --- /dev/null +++ b/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]; + } +}