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feat(composed-arbitrable): finish proxy example
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...dard/arbitration/composed-arbitrable/example/TwoPartyArbitrableEscrowPaymentProxyUser.sol
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| pragma solidity ^0.4.24; | ||
| pragma experimental ABIEncoderV2; | ||
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| import "../proxy/ArbitrableProxyUser.sol"; | ||
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| /** | ||
| * @title TwoPartyArbitrableEscrowPaymentProxyUser | ||
| * @author Enrique Piqueras - <epiquerass@gmail.com> | ||
| * @dev Implementation of a two party arbitrable escrow service using the `ArbitrableProxyUser` contract. | ||
| */ | ||
| contract TwoPartyArbitrableEscrowPaymentProxyUser is ArbitrableProxyUser { | ||
| /* Structs */ | ||
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| struct Payment { | ||
| uint value; | ||
| uint createdAt; | ||
| uint timeOut; | ||
| bool executed; | ||
| } | ||
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| /* Storage */ | ||
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| mapping(bytes32 => Payment) public payments; | ||
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| /* Constructor */ | ||
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| /** @dev Constructs the `TwoPartyArbitrableEscrowPaymentProxyUser` contract. | ||
| * @param _arbitrableProxy The arbitrable proxy to use. | ||
| */ | ||
| constructor(ArbitrableProxy _arbitrableProxy) public ArbitrableProxyUser(_arbitrableProxy) {} | ||
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| /* External */ | ||
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| /** @dev Creates an escrowed payment. | ||
| * @param _paymentID The ID of the payment. | ||
| * @param _metaEvidence The meta evidence for the potential dispute. | ||
| * @param _to The receiver of the payment. | ||
| * @param _arbitrationFeesWaitingTime The maximum time to wait for arbitration fees if the dispute is raised. | ||
| * @param _arbitrator The arbitrator to use for the potential dispute. | ||
| * @param _timeOut The time to wait before executing the payment if the dispute is not raised. | ||
| */ | ||
| function createPayment( | ||
| bytes32 _paymentID, | ||
| string _metaEvidence, | ||
| address _to, | ||
| uint _arbitrationFeesWaitingTime, | ||
| Arbitrator _arbitrator, | ||
| uint _timeOut | ||
| ) external payable { | ||
| require(msg.value > 0, "Payment must be more than zero."); | ||
| address[] memory _parties = new address[](2); | ||
| _parties[0] = msg.sender; | ||
| _parties[1] = _to; | ||
| arbitrableProxy.createAgreement( | ||
| _paymentID, | ||
| _metaEvidence, | ||
| _parties, | ||
| 2, | ||
| new bytes(0), | ||
| _arbitrationFeesWaitingTime, | ||
| _arbitrator | ||
| ); | ||
| payments[_paymentID] = Payment({ | ||
| value: msg.value, | ||
| createdAt: now, | ||
| timeOut: _timeOut, | ||
| executed: false | ||
| }); | ||
| } | ||
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| /** @dev Executes a payment that has already timed out and is not disputed. | ||
| * @param _paymentID The ID of the payment. | ||
| */ | ||
| function executePayment(bytes32 _paymentID) external { | ||
| ( | ||
| address _creator, | ||
| address[] memory _parties, | ||
| , | ||
| , | ||
| , | ||
| , | ||
| , | ||
| bool _disputed, | ||
| , | ||
| , | ||
| ) = arbitrableProxy.getAgreementInfo(_paymentID); | ||
| Payment storage payment = payments[_paymentID]; | ||
| require(_creator != address(0), "The specified payment does not exist."); | ||
| require(!payment.executed, "The specified payment has already been executed."); | ||
| require(!_disputed, "The specified payment is disputed."); | ||
| require(now - payment.createdAt > payment.timeOut, "The specified payment has not timed out yet."); | ||
| _parties[1].send(payment.value); // Avoid blocking. | ||
| payment.executed = true; | ||
| } | ||
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| /* Public */ | ||
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| /** @dev Executes the ruling on the specified agreement. | ||
| * @param _agreementID The ID of the agreement. | ||
| * @param _ruling The ruling. | ||
| */ | ||
| function executeAgreementRuling(bytes32 _agreementID, uint _ruling) public { | ||
| super.executeAgreementRuling(_agreementID, _ruling); | ||
| ( | ||
| , | ||
| address[] memory _parties, | ||
| , | ||
| , | ||
| , | ||
| , | ||
| , | ||
| , | ||
| , | ||
| , | ||
| ) = arbitrableProxy.getAgreementInfo(_agreementID); | ||
| ( | ||
| , | ||
| uint[] memory _stake, | ||
| , | ||
| uint[2][] memory _totalContributedPerSide, | ||
| bool[] memory _loserFullyFunded | ||
| ) = arbitrableProxy.getFeesInfo(_agreementID); | ||
| Payment storage payment = payments[_agreementID]; | ||
| require(!payment.executed, "The specified agreement has already been executed."); | ||
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| if (_stake.length == 1) { // Failed to fund first round. | ||
| // Send the value to whoever paid more. | ||
| if (_totalContributedPerSide[0][0] >= _totalContributedPerSide[0][1]) | ||
| _parties[0].send(payment.value); // Avoid blocking. | ||
| else | ||
| _parties[1].send(payment.value); // Avoid blocking. | ||
| } else { // Failed to fund a later round. | ||
| // Respect the ruling unless the losing side funded the appeal and the winning side paid less than expected. | ||
| if ( | ||
| _loserFullyFunded[_loserFullyFunded.length - 1] && | ||
| _totalContributedPerSide[_totalContributedPerSide.length - 1][0] - _stake[_stake.length - 1] > _totalContributedPerSide[_totalContributedPerSide.length - 1][1] | ||
| ) | ||
| _parties[_ruling == 0 ? 1 : 0].send(payment.value); // Avoid blocking. | ||
| else | ||
| _parties[_ruling].send(payment.value); // Avoid blocking. | ||
| } | ||
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| payment.executed = true; | ||
| } | ||
| } |
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