quadraticvoting.se

//Simple Quadratic Voting script that allows any person or contract to register an organization. The creator becomes the admin, and can then add lower level permissions for accounts who can register voters, register proposals, and vote.
data organizations[](exists, name, settings(voteCost), members[](exists, permissions[]), proposals[](exists, name, description, contract, startDate,endDate, yesVotes, noVotes, money, voters[](exists, votes, yesOrNo))

//Register an organization, and give that account admin access
def registerOrganization(name):
    organizationArray = [name,msg.sender]
    organizationHash = sha256(organizationArray, items = 2)
    if not organizations[organizationHash].exists:
        self.organizations[organizationHash].exists = 1
        self.organizations[organizationHash].name = name
        self.organizations[organizationHash].members[msg.sender].permissions[] = "Administrate"
        self.organizations[organizationHash].members[msg.sender].permissions[] = "RegisterVoters"
        self.organizations[organizationHash].members[msg.sender].permissions[] = "DeleteVoters"
        self.organizations[organizationHash].members[msg.sender].permissions[] = "RegisterProposals"
        self.organizations[organizationHash].members[msg.sender].permissions[] = "DeleteProposals"
        self.organizations[organizationHash].members[msg.sender].permissions[] = "Vote"
    else:
        return(0)

//Give another account permissions:
//@Todo: create a general purpose permissions contract
//Permissions Allowed:
    //Administrate: Change any permission
    //RegisterVoters: Allow to add new voters
    //DeleteVoters: Allow to remove voters
    //RegisterProposals: Allow to add proposals
    //DeleteProposals: Allow to delete proposals
    //Vote: Allowed to vote
def givePermission(organization, account,permission):
    //Only adminstrators can give permissions besides "vote"
    if self.organizations[organization].members[msg.sender].permissions["Administrate"]:
        if permission == "Admininstrate" or permission == "RegisterVoters" or permission == "DeleteVoters" or permission == "RegisterProposals" or permission == "DeleteProposals" or permission == "Vote":
            if not self.organizations[organization].members[account].permissions[permission]:
                self.organizations[organization].members[account].permissions[] = permission
                self.organizations[organization].members[account].exists = 1
                return(1)
            else:
                return(0)
        else:
            return(0)
    //RegisterVoters Accounts allowed to register voters can give the "Vote" permission.
    elif self.organizations[organization].members[msg.sender].permissions["RegisterVoters"]:
        if not self.organizations[msg.sender].members[voterRegID].permissions["Vote"]:
            self.organizations[organization].members[account].exists = 1
            self.organizations[organization].members[account].permissions[] = "Vote"
            return(1)
        else:
            return(0)
    else:
        return(0)

def registerProposal(organization, contract, proposalName, proposalDescription,proposalStartDate, proposalEndDate, proposalVoteCost):
    //Check Permissions
    if self.organizations[organization].members[msg.sender].permission["RegisterProposals"]:
        proposalArray = [organization, contract, proposalName, proposalDescription, proposalStartDate, proposalEndDate, proposalVoteCost]
        proposal = sha256(proposalArray, items = 7)
        //Sanity checks
        if not self.organizations[organization].proposals[proposal].exists and proposalStartDate >= block.timestamp and proposalendDate > proposalStartDate:
            //Initialize the proposal
            self.organizations[organization].proposals[proposal].exists = 1
            self.organizations[organization].proposals[proposal].name = proposalName
            self.organizations[organization].proposals[proposal].description = proposalDescription
            self.organizations[organization].proposals[proposal].startDate = proposalStartDate
            self.organizations[organization].proposals[proposal].endDate = proposalEndDate
            self.organizations[organization].proposals[proposal].voteCost = proposalVoteCost
            self.organizations[organization].proposals[proposal].yesVotes = 0
            self.organizations[organization].proposals[proposal].noVotes = 0
            self.organizations[organization].proposals[proposal].money = 0
            return(1)
        else:
            return(0)
    else:
        return(0)

def voteCount(costForVote):
    //@todo allow for mulitple voting rounds.j
    return ((msg.value/costForVote)**(1/2))

//@tado Add vitaliks ring signatures implementation for anonymous voting
def vote(organization, proposal, forOrAgainst):
    if self.organizations[organization].members[msg.sender].permissions["Vote"] and self.organizations[organization].proposals[proposal].exists:
        //@todo allow for multiple voting rounds before time expires.
        if not self.organizations[organization].proposals[proposal].voters[msg.sender].exists and block.timestamp < self.organizations[organization].proposals[proposal].endDate:
            voteAmount = msg.value/(self.organizations[organization].proposals[proposal].voteCost)**(1/2)
            moneySpent = (voteAmount * self.organizations[organization].proposals[proposal].voteCost) ** 2
            moneyLeft = msg.value - moneySpent
            //Return the unused money
            send(msg.sender,moneyLeft)
            //Tally the votes
            self.organizations[organization].proposals[proposal].voters[msg.sender].votes = voteAmount
            self.organizations[organization].proposals[proposal].voters[msg.sender].yesOrNo = forOrAgainst
            //Against Vote
            if forOrAgainst == 0:
                self.organizations[organization].proposals[proposal].noVotes += voteAmount
            //For Vote
            if forOrAgainst == 1:
                self.organizations[organization].proposals[proposal].yesVotes += voteAmount