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<code>struct Proposal {
string description;
bool executed;
int256 currentResult;
uint8 typeFlag; // 1 = delete
bytes32 target; // 提案目標的ID。例如，標志1，目標XXXXXX（哈希）表示刪除submissions[hash]的提案
uint256 creationDate;
uint256 deadline;
mapping (address => bool) voters;
Vote[] votes;
address submitter;
}
Proposal[] public proposals;
uint256 proposalCount = 0;
event ProposalAdded(uint256 id, uint8 typeFlag, bytes32 hash, string description, address submitter);
event ProposalExecuted(uint256 id);
event Voted(address voter, bool vote, uint256 power, string justification);
struct Vote {
bool inSupport;
address voter;
string justification;
uint256 power;
}</code>
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<code>modifier tokenHoldersOnly() {
require(token.balanceOf(msg.sender) >= 10**token.decimals());
_;
}
function vote(uint256 _proposalId, bool _vote, string _description, uint256 _votePower) tokenHoldersOnly public returns (int256) {
require(_votePower > 0, "At least some power must be given to the vote.");
require(uint256(_votePower) <= token.balanceOf(msg.sender), "Vote power exceeds token balance.");
Proposal storage p = proposals[_proposalId];
require(p.executed == false, "Proposal must not have been executed already.");
require(p.deadline > now, "Proposal must not have expired.");
require(p.voters[msg.sender] == false, "User must not have already voted.");
uint256 voteid = p.votes.length++;
Vote storage pvote = p.votes[voteid];
pvote.inSupport = _vote;
pvote.justification = _description;
pvote.voter = msg.sender;
pvote.power = _votePower;
p.voters[msg.sender] = true;
p.currentResult = (_vote) ? p.currentResult + int256(_votePower) : p.currentResult - int256(_votePower);
token.increaseLockedAmount(msg.sender, _votePower);
emit Voted(msg.sender, _vote, _votePower, _description);
return p.currentResult;
}</code>
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<code>modifier memberOnly() {
require(whitelist[msg.sender]);
require(!blacklist[msg.sender]);
_;
}
function proposeDeletion(bytes32 _hash, string _description) memberOnly public {
require(submissionExists(_hash), "Submission must exist to be deletable");
uint256 proposalId = proposals.length++;
Proposal storage p = proposals[proposalId];
p.description = _description;
p.executed = false;
p.creationDate = now;
p.submitter = msg.sender;
p.typeFlag = 1;
p.target = _hash;
p.deadline = now + 2 days;
emit ProposalAdded(proposalId, 1, _hash, _description, msg.sender);
proposalCount = proposalId + 1;
}
function proposeDeletionUrgent(bytes32 _hash, string _description) onlyOwner public {
require(submissionExists(_hash), "Submission must exist to be deletable");
uint256 proposalId = proposals.length++;
Proposal storage p = proposals[proposalId];
p.description = _description;
p.executed = false;
p.creationDate = now;
p.submitter = msg.sender;
p.typeFlag = 1;
p.target = _hash;
p.deadline = now + 12 hours;
emit ProposalAdded(proposalId, 1, _hash, _description, msg.sender);
proposalCount = proposalId + 1;
}
function proposeDeletionUrgentImage(bytes32 _hash, string _description) onlyOwner public {
require(submissions[_hash].image == true, "Submission must be existing image");
uint256 proposalId = proposals.length++;
Proposal storage p = proposals[proposalId];
p.description = _description;
p.executed = false;
p.creationDate = now;
p.submitter = msg.sender;
p.typeFlag = 1;
p.target = _hash;
p.deadline = now + 4 hours;
emit ProposalAdded(proposalId, 1, _hash, _description, msg.sender);
proposalCount = proposalId + 1;
}</code>
<code>function executeProposal(uint256 _id) public {
Proposal storage p = proposals[_id];
require(now >= p.deadline && !p.executed);
if (p.typeFlag == 1 && p.currentResult > 0) {
assert(deleteSubmission(p.target));
}
uint256 len = p.votes.length;
for (uint i = 0; i < len; i++) {
token.decreaseLockedAmount(p.votes[i].voter, p.votes[i].power);
}
p.executed = true;
emit ProposalExecuted(_id);
}</code>
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DAO ???? ??? ??? ?? ?? ?? ???? ??? DAO ??, ??? ?? ?? ? ?? ?? ??? ???? ?? ?????. ?? ?????? ????? ??? ??? ??? ? ?? ???? ?? ?? ?????. <code>struct Proposal {
string description;
bool executed;
int256 currentResult;
uint8 typeFlag; // 1 = delete
bytes32 target; // 提案目標的ID。例如，標志1，目標XXXXXX（哈希）表示刪除submissions[hash]的提案
uint256 creationDate;
uint256 deadline;
mapping (address => bool) voters;
Vote[] votes;
address submitter;
}
Proposal[] public proposals;
uint256 proposalCount = 0;
event ProposalAdded(uint256 id, uint8 typeFlag, bytes32 hash, string description, address submitter);
event ProposalExecuted(uint256 id);
event Voted(address voter, bool vote, uint256 power, string justification);
struct Vote {
bool inSupport;
address voter;
string justification;
uint256 power;
}</code>
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