Created
December 13, 2018 16:35
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Counterfactual Sweeper contract for Dharma
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| pragma solidity ^0.4.24; | |
| /** | |
| * Based on Austin Griffith's Counterfactual Sweeper contract | |
| * https://github.com/austintgriffith/counterfactual-token-repayment/blob/master/contracts/Sweeper/Sweeper.sol | |
| * | |
| * Upon creation, this contract will make a repayment on behalf of a debtor | |
| * | |
| * agreementId - Dharma loan agreement ID | |
| * repaymentRouter - Address of Dharma's RepaymentRouter contract | |
| * tokenTransferProxy - Address of Dharma's token proxy contract | |
| * tokenAddress - Address of ERC20 token being repaid | |
| * gasRefund - Address that any remaining ETH should be returned to | |
| * amount - Amount of ERC20 token being repaid | |
| */ | |
| contract DharmaSweeper { | |
| constructor( | |
| bytes32 agreementId, | |
| address repaymentRouter, | |
| address tokenTransferProxy, | |
| address tokenAddress, | |
| address gasRefund, | |
| uint256 amount | |
| ) | |
| public | |
| { | |
| // approve Dharma's tokenTransferProxy | |
| IERC20(tokenAddress).approve(tokenTransferProxy, amount); | |
| // make the repayment | |
| IRepaymentRouter(repaymentRouter).repay(agreementId, amount, tokenAddress); | |
| // destroy contract | |
| selfdestruct(gasRefund); | |
| } | |
| } | |
| contract IERC20 { | |
| function approve(address spender, uint256 value) external {} | |
| } | |
| contract IRepaymentRouter { | |
| function repay(bytes32 agreementId, uint256 amount, address tokenAddress) external {} | |
| } |
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