contract Voting {
 
    struct Proposal {
        string name;  
        u32 voteCount;
    }

    address chairperson;

    struct Voter {
        bool voted;  
        u32 vote;   
    }

    mapping(address => Voter) voters;

    Proposal[] proposals;

    fn init(string proposalNames) {
        chairperson = get_caller();
        for (u32 i = 0; i < proposalNames.length; i++) {
            proposals.push(Proposal({
                name: proposalNames[i],
                voteCount: 0
            }));
        }
    }

    fn vote(u32 proposal)  {
        address msgSender = get_caller();
        Voter storage sender = voters[msgSender];
        //require(!sender.voted, "Already voted.");
        sender.voted = true;
        sender.vote = proposal;

        proposals[proposal].voteCount += 1;
    }


    fn winningProposal() -> (u32 winningProposal_) {
        u32 winningVoteCount = 0;
        for (u32 p = 0; p < proposals.length; p++) {
            if (proposals[p].voteCount > winningVoteCount) {
                winningVoteCount = proposals[p].voteCount;
                winningProposal_ = p;
            }
        }
    }

    fn winnerName() -> (string winnerName_) {
        winnerName_ = proposals[winningProposal()].name;
    }

    fn get_caller() -> (address) {
        return 0x0595c3e78A0Df589B486778c4d81a3605A37Fb041466a0CFA2DA9151fd6b580E;
    }
}