CreatorCongress

// Submitted by EthereumHistory (ethereumhistory.com)
pragma solidity ^0.4.4;
/**
 * @title Contract for object that have an owner
 */
contract Owned {
    /**
     * Contract owner address
     */
    address public owner;

    /**
     * @dev Store owner on creation
     */
    function Owned() { owner = msg.sender; }

    /**
     * @dev Delegate contract to another person
     * @param _owner is another person address
     */
    function delegate(address _owner) onlyOwner
    { owner = _owner; }

    /**
     * @dev Owner check modifier
     */
    modifier onlyOwner { if (msg.sender != owner) throw; _; }
}

pragma solidity ^0.4.4;

contract Congress is Owned {
    /* Contract Variables and events */
    uint public minimumQuorum;
    uint public debatingPeriodInMinutes;
    int public majorityMargin;
    Proposal[] public proposals;
    uint public numProposals;
    mapping (address => uint) public memberId;
    Member[] public members;

    event ProposalAdded(uint proposalID, address recipient, uint amount, string description);
    event Voted(uint proposalID, bool position, address voter, string justification);
    event ProposalTallied(uint proposalID, int result, uint quorum, bool active);
    event MembershipChanged(address member, bool isMember);
    event ChangeOfRules(uint minimumQuorum, uint debatingPeriodInMinutes, int majorityMargin);

    struct Proposal {
        address recipient;
        uint amount;
        string description;
        uint votingDeadline;
        bool executed;
        bool proposalPassed;
        uint numberOfVotes;
        int currentResult;
        bytes32 proposalHash;
        Vote[] votes;
        mapping (address => bool) voted;
    }

    struct Member {
        address member;
        bool canVote;
        string name;
        uint memberSince;
    }

    struct Vote {
        bool inSupport;
        address voter;
        string justification;
    }

    /* modifier that allows only shareholders to vote and create new proposals */
    modifier onlyMembers {
        if (memberId[msg.sender] == 0
        || !members[memberId[msg.sender]].canVote)
        throw;
        _;
    }

    /* First time setup */
    function Congress(
        uint minimumQuorumForProposals,
        uint minutesForDebate,
        int marginOfVotesForMajority, address congressLeader
    ) payable {
        changeVotingRules(minimumQuorumForProposals, minutesForDebate, marginOfVotesForMajority);
        if (congressLeader != 0) owner = congressLeader;
        // It’s necessary to add an empty first member
        changeMembership(0, false, ''); 
        // and let's add the founder, to save a step later       
        changeMembership(owner, true, 'founder');        
    }

    /*make member*/
    function changeMembership(address targetMember, bool canVote, string memberName) onlyOwner {
        uint id;
        if (memberId[targetMember] == 0) {
           memberId[targetMember] = members.length;
           id = members.length++;
           members[id] = Member({member: targetMember, canVote: canVote, memberSince: now, name: memberName});
        } else {
            id = memberId[targetMember];
            Member m = members[id];
            m.canVote = canVote;
        }

        MembershipChanged(targetMember, canVote);

    }

    /*change rules*/
    function changeVotingRules(
        uint minimumQuorumForProposals,
        uint minutesForDebate,
        int marginOfVotesForMajority
    ) onlyOwner {
        minimumQuorum = minimumQuorumForProposals;
        debatingPeriodInMinutes = minutesForDebate;
        majorityMargin = marginOfVotesForMajority;

        ChangeOfRules(minimumQuorum, debatingPeriodInMinutes, majorityMargin);
    }

    /* Function to create a new proposal */
    function newProposal(
        address beneficiary,
        uint etherAmount,
        string JobDescription,
        bytes transactionBytecode
    )
        onlyMembers
        returns (uint proposalID)
    {
        proposalID = proposals.length++;
        Proposal p = proposals[proposalID];
        p.recipient = beneficiary;
        p.amount = etherAmount;
        p.description = JobDescription;
        p.proposalHash = sha3(beneficiary, etherAmount, transactionBytecode);
        p.votingDeadline = now + debatingPeriodInMinutes * 1 minutes;
        p.executed = false;
        p.proposalPassed = false;
        p.numberOfVotes = 0;
        ProposalAdded(proposalID, beneficiary, etherAmount, JobDescription);
        numProposals = proposalID+1;
    }

    /* function to check if a proposal code matches */
    function checkProposalCode(
        uint proposalNumber,
        address beneficiary,
        uint etherAmount,
        bytes transactionBytecode
    )
        constant
        returns (bool codeChecksOut)
    {
        Proposal p = proposals[proposalNumber];
        return p.proposalHash == sha3(beneficiary, etherAmount, transactionBytecode);
    }

    function vote(
        uint proposalNumber,
        bool supportsProposal,
        string justificationText
    )
        onlyMembers
        returns (uint voteID)
    {
        Proposal p = proposals[proposalNumber];         // Get the proposal
        if (p.voted[msg.sender] == true) throw;         // If has already voted, cancel
        p.voted[msg.sender] = true;                     // Set this voter as having voted
        p.numberOfVotes++;                              // Increase the number of votes
        if (supportsProposal) {                         // If they support the proposal
            p.currentResult++;                          // Increase score
        } else {                                        // If they don't
            p.currentResult--;                          // Decrease the score
        }
        // Create a log of this event
        Voted(proposalNumber,  supportsProposal, msg.sender, justificationText);
    }

    function executeProposal(uint proposalNumber, bytes transactionBytecode) returns (int result) {
        Proposal p = proposals[proposalNumber];
        /* Check if the proposal can be executed:
           - Has the voting deadline arrived?
           - Has it been already executed or is it being executed?
           - Does the transaction code match the proposal?
           - Has a minimum quorum?
        */

        if (now < p.votingDeadline
            || p.executed
            || p.proposalHash != sha3(p.recipient, p.amount, transactionBytecode)
            || p.numberOfVotes < minimumQuorum)
            throw;

        /* execute result */
        /* If difference between support and opposition is larger than margin */
        if (p.currentResult > majorityMargin) {
            // Avoid recursive calling

            p.executed = true;
            if (!p.recipient.call.value(p.amount * 1 ether)(transactionBytecode)) {
                throw;
            }

            p.proposalPassed = true;
        } else {
            p.proposalPassed = false;
        }
        // Fire Events
        ProposalTallied(proposalNumber, p.currentResult, p.numberOfVotes, p.proposalPassed);
    }
}

pragma solidity ^0.4.4;

library CreatorCongress {
    function create(uint256 minimumQuorumForProposals, uint256 minutesForDebate, int256 marginOfVotesForMajority, address congressLeader) returns (Congress)
    { return new Congress(minimumQuorumForProposals, minutesForDebate, marginOfVotesForMajority, congressLeader); }

    function version() constant returns (string)
    { return "v0.5.0 (6d589277)"; }

    function abi() constant returns (string)
    { return '[{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"proposals","outputs":[{"name":"recipient","type":"address"},{"name":"amount","type":"uint256"},{"name":"description","type":"string"},{"name":"votingDeadline","type":"uint256"},{"name":"executed","type":"bool"},{"name":"proposalPassed","type":"bool"},{"name":"numberOfVotes","type":"uint256"},{"name":"currentResult","type":"int256"},{"name":"proposalHash","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"proposalNumber","type":"uint256"},{"name":"transactionBytecode","type":"bytes"}],"name":"executeProposal","outputs":[{"name":"result","type":"int256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"memberId","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"numProposals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_owner","type":"address"}],"name":"delegate","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"members","outputs":[{"name":"member","type":"address"},{"name":"canVote","type":"bool"},{"name":"name","type":"string"},{"name":"memberSince","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"debatingPeriodInMinutes","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"minimumQuorum","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"targetMember","type":"address"},{"name":"canVote","type":"bool"},{"name":"memberName","type":"string"}],"name":"changeMembership","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"majorityMargin","outputs":[{"name":"","type":"int256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"beneficiary","type":"address"},{"name":"etherAmount","type":"uint256"},{"name":"JobDescription","type":"string"},{"name":"transactionBytecode","type":"bytes"}],"name":"newProposal","outputs":[{"name":"proposalID","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"minimumQuorumForProposals","type":"uint256"},{"name":"minutesForDebate","type":"uint256"},{"name":"marginOfVotesForMajority","type":"int256"}],"name":"changeVotingRules","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"proposalNumber","type":"uint256"},{"name":"supportsProposal","type":"bool"},{"name":"justificationText","type":"string"}],"name":"vote","outputs":[{"name":"voteID","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"proposalNumber","type":"uint256"},{"name":"beneficiary","type":"address"},{"name":"etherAmount","type":"uint256"},{"name":"transactionBytecode","type":"bytes"}],"name":"checkProposalCode","outputs":[{"name":"codeChecksOut","type":"bool"}],"payable":false,"type":"function"},{"inputs":[{"name":"minimumQuorumForProposals","type":"uint256"},{"name":"minutesForDebate","type":"uint256"},{"name":"marginOfVotesForMajority","type":"int256"},{"name":"congressLeader","type":"address"}],"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"name":"proposalID","type":"uint256"},{"indexed":false,"name":"recipient","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"description","type":"string"}],"name":"ProposalAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"proposalID","type":"uint256"},{"indexed":false,"name":"position","type":"bool"},{"indexed":false,"name":"voter","type":"address"},{"indexed":false,"name":"justification","type":"string"}],"name":"Voted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"proposalID","type":"uint256"},{"indexed":false,"name":"result","type":"int256"},{"indexed":false,"name":"quorum","type":"uint256"},{"indexed":false,"name":"active","type":"bool"}],"name":"ProposalTallied","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"member","type":"address"},{"indexed":false,"name":"isMember","type":"bool"}],"name":"MembershipChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"minimumQuorum","type":"uint256"},{"indexed":false,"name":"debatingPeriodInMinutes","type":"uint256"},{"indexed":false,"name":"majorityMargin","type":"int256"}],"name":"ChangeOfRules","type":"event"}]'; }
}