Mini Micro-Cartelism in a Nutshell

micro-cartel-bidding.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract MicroCartelBidding {
    address public owner; // The owner of the bidding contract
    address[] public cartelMembers; // Addresses of cartel members
    uint public highestBid; // Highest bid amount
    
    constructor() {
        owner = msg.sender;
    }
    
    modifier onlyOwner() {
        require(msg.sender == owner, "Only owner can perform this action");
        _;
    }
    
    modifier onlyCartelMember() {
        bool isCartelMember = false;
        for (uint i = 0; i < cartelMembers.length; i++) {
            if (cartelMembers[i] == msg.sender) {
                isCartelMember = true;
                break;
            }
        }
        require(isCartelMember, "Only cartel members can perform this action");
        _;
    }
    
    // Function to join the cartel (only owner can invite members)
    function joinCartel(address _member) public onlyOwner {
        cartelMembers.push(_member);
    }
    
    // Function for cartel members to place unlimited bids
    function placeBid() public payable onlyCartelMember {
        // The highest bid is always set to the maximum amount sent
        highestBid = msg.value;
    }
    
    // Function for cartel members to withdraw their bids
    function withdrawBid() public onlyCartelMember {
        // Implement logic to refund the bidder
        // Note: In this scenario, cartel members can freely withdraw bids.
    }
    
    // Function to end the bidding and transfer all funds to the owner
    function endBidding() public onlyOwner {
        // Transfer all funds to the owner
        payable(owner).transfer(address(this).balance);
    }
    
    // Function to check the current highest bid
    function getCurrentHighestBid() public view returns (uint) {
        return highestBid;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract RealTimeBiddingRegime {
    // ...
    
    // DAO-related parameters and variables
    address public daoContract; // Address of the DAO contract
    uint public daoVotingDuration; // Duration for DAO voting in seconds
    uint public daoProposalThreshold; // Minimum votes required for a proposal to pass
    uint public daoProposalCount; // Counter for tracking proposals
    
    struct Proposal {
        uint proposalId;
        address proposer;
        uint voteCount;
        bool passed;
        bool executed;
    }
    
    mapping(uint => Proposal) public proposals;
    
    modifier onlyDAOContract() {
        require(msg.sender == daoContract, "Only DAO contract can perform this action");
        _;
    }
    
    event NewProposal(uint proposalId, address proposer, uint voteCount, bool passed);
    
    // Function to create a new proposal in the DAO
    function createProposal() public onlyDAOContract {
        uint proposalId = daoProposalCount + 1;
        proposals[proposalId] = Proposal({
            proposalId: proposalId,
            proposer: msg.sender,
            voteCount: 0,
            passed: false,
            executed: false
        });
        daoProposalCount++;
    }
    
    // Function for DAO members to vote on a proposal
    function voteOnProposal(uint _proposalId) public onlyDAOContract {
        require(proposals[_proposalId].proposer != address(0), "Invalid proposal");
        require(!proposals[_proposalId].executed, "Proposal has already been executed");
        require(bidders[msg.sender].bidAmount > 0, "Only bidders can vote");
        
        proposals[_proposalId].voteCount++;
    }
    
    // Function for DAO members to execute a passed proposal
    function executeProposal(uint _proposalId) public onlyDAOContract {
        require(proposals[_proposalId].proposer != address(0), "Invalid proposal");
        require(!proposals[_proposalId].executed, "Proposal has already been executed");
        require(proposals[_proposalId].voteCount >= daoProposalThreshold, "Proposal has not received enough votes");
        
        // Implement proposal execution logic (e.g., update bidding rules)
        proposals[_proposalId].executed = true;
        
        // Emit an event to indicate the proposal has passed
        emit NewProposal(_proposalId, proposals[_proposalId].proposer, proposals[_proposalId].voteCount, true);
    }
    
    // Additional functions for managing DAO parameters and interactions
    
    // ...
}
``

`// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract RealTimeBiddingRegime {
address public owner; // The owner of the bidding regime
uint public biddingEndTime; // Timestamp when the bidding ends
uint public minBidIncrement; // Minimum bid increment required

struct Bidder {
    uint bidAmount;
    bool hasWithdrawn;
}

address public highestBidder; // Address of the highest bidder
uint public highestBid; // Highest bid amount
mapping(address => Bidder) public bidders; // Mapping of bidders

enum BiddingState { Active, Ended }
BiddingState public biddingState = BiddingState.Active;

constructor(uint _biddingDuration, uint _minIncrement) {
    owner = msg.sender;
    biddingEndTime = block.timestamp + _biddingDuration;
    minBidIncrement = _minIncrement;
}

modifier onlyOwner() {
    require(msg.sender == owner, "Only owner can perform this action");
    _;
}

modifier onlyBiddingActive() {
    require(biddingState == BiddingState.Active, "Bidding has ended");
    _;
}

modifier onlyHighestBidder() {
    require(msg.sender == highestBidder, "Only highest bidder can perform this action");
    _;
}

function placeBid() public payable onlyBiddingActive {
    require(msg.value > highestBid + minBidIncrement, "Bid amount must be higher than the current highest bid plus increment");
    
    // Refund the previous highest bidder
    if (highestBidder != address(0)) {
        uint refundAmount = bidders[highestBidder].bidAmount;
        payable(highestBidder).transfer(refundAmount);
        bidders[highestBidder].hasWithdrawn = true;
    }
    
    highestBidder = msg.sender;
    highestBid = msg.value;
    bidders[msg.sender].bidAmount = msg.value;
    bidders[msg.sender].hasWithdrawn = false;
}

function withdrawBid() public onlyBiddingActive {
    require(msg.sender != highestBidder, "You are the highest bidder");
    require(bidders[msg.sender].bidAmount > 0, "No bid to withdraw");
    require(!bidders[msg.sender].hasWithdrawn, "Bidder has already withdrawn");
    
    uint refundAmount = bidders[msg.sender].bidAmount;
    bidders[msg.sender].bidAmount = 0;
    bidders[msg.sender].hasWithdrawn = true;
    payable(msg.sender).transfer(refundAmount);
}

function endBidding() public onlyOwner {
    require(block.timestamp >= biddingEndTime, "Bidding has not ended yet");
    require(biddingState == BiddingState.Active, "Bidding has already ended");
    
    biddingState = BiddingState.Ended;
    
    // Transfer the highest bid to the owner
    payable(owner).transfer(highestBid);
}

// Additional functions for monitoring and reporting the bidding regime's status

}
`