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feat: view contract and payout refactor
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| // SPDX-License-Identifier: MIT | ||
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| pragma solidity 0.8.18; | ||
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| import {Strings} from "@openzeppelin/contracts/utils/Strings.sol"; | ||
| import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; | ||
| import {EscrowUniversal, Transaction, NATIVE, Party, Status, IERC20} from "./EscrowUniversal.sol"; | ||
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| contract EscrowView { | ||
| EscrowUniversal public immutable escrow; | ||
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| constructor(address _escrow) { | ||
| escrow = EscrowUniversal(_escrow); | ||
| } | ||
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| /// @notice Get the payout messages for a transaction once a dispute is created. | ||
| /// @notice The amounts pre-dispute are imprecise as the arbitration fees are not paid yet by either or both parties. | ||
| function getPayoutMessages( | ||
| uint256 _transactionID | ||
| ) external view returns (string memory noWinner, string memory buyerWins, string memory sellerWins) { | ||
| (, , uint256 amount, , , , , , , , , IERC20 token) = escrow.transactions(_transactionID); | ||
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| (uint256 noWinnerPayout, uint256 noWinnerPayoutToken, , ) = escrow.getPayouts(_transactionID, Party.None); | ||
| (, , uint256 buyerWinsCost, uint256 buyerWinsCostToken) = escrow.getPayouts(_transactionID, Party.Buyer); | ||
| (, , uint256 sellerWinsCost, uint256 sellerWinsCostToken) = escrow.getPayouts(_transactionID, Party.Seller); | ||
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| string memory amountStr = formatEth(amount); | ||
| string memory amountTokenStr = formatToken(amount, address(token)); | ||
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| if (token == NATIVE) { | ||
| noWinner = string.concat( | ||
| "Buyer and Seller get ", | ||
| formatEth(noWinnerPayout), | ||
| " back and pay half of the arbitration fees each." | ||
| ); | ||
| buyerWins = string.concat( | ||
| "Buyer pays ", | ||
| formatEth(buyerWinsCost), | ||
| " instead of ", | ||
| amountStr, | ||
| ", Seller pays for arbitration." | ||
| ); | ||
| sellerWins = string.concat( | ||
| "Buyer pays ", | ||
| formatEth(sellerWinsCost), | ||
| " instead of ", | ||
| amountStr, | ||
| ", Buyer pays for arbitration." | ||
| ); | ||
| } else { | ||
| noWinner = string.concat( | ||
| "Buyer and Seller get ", | ||
| formatToken(noWinnerPayoutToken, address(token)), | ||
| " back and pay half of the arbitration fees each." | ||
| ); | ||
| buyerWins = string.concat( | ||
| "Buyer pays ", | ||
| formatToken(buyerWinsCostToken, address(token)), | ||
| " instead of ", | ||
| amountTokenStr, | ||
| ", Seller pays for arbitration." | ||
| ); | ||
| sellerWins = string.concat( | ||
| "Buyer pays ", | ||
| formatToken(sellerWinsCostToken, address(token)), | ||
| " instead of ", | ||
| amountTokenStr, | ||
| ", Buyer pays for arbitration." | ||
| ); | ||
| } | ||
| } | ||
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| function formatEth(uint256 _amountWei) public pure returns (string memory) { | ||
| uint256 ethWhole = _amountWei / 1 ether; | ||
| uint256 ethFraction = (_amountWei % 1 ether) / 1e15; // Get the first 3 decimal digits | ||
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| // Convert the whole and fractional parts to strings | ||
| string memory ethWholeStr = Strings.toString(ethWhole); | ||
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| // If the fractional part is zero, return only the whole part | ||
| if (ethFraction == 0) { | ||
| return string.concat(ethWholeStr, " ETH"); | ||
| } | ||
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| // Convert the fractional part to string with leading zeros if necessary | ||
| string memory ethFractionStr = Strings.toString(ethFraction); | ||
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| // Pad the fractional part with leading zeros to ensure three digits | ||
| while (bytes(ethFractionStr).length < 3) { | ||
| ethFractionStr = string.concat("0", ethFractionStr); | ||
| } | ||
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| // Remove trailing zeros from the fractional part | ||
| bytes memory fractionBytes = bytes(ethFractionStr); | ||
| uint256 fractionLength = fractionBytes.length; | ||
| while (fractionLength > 0 && fractionBytes[fractionLength - 1] == "0") { | ||
| fractionLength--; | ||
| } | ||
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| if (fractionLength == 0) { | ||
| return ethWholeStr; | ||
| } else { | ||
| bytes memory fractionTrimmed = new bytes(fractionLength); | ||
| for (uint256 i = 0; i < fractionLength; i++) { | ||
| fractionTrimmed[i] = fractionBytes[i]; | ||
| } | ||
| return string.concat(ethWholeStr, ".", string(fractionTrimmed), " ETH"); | ||
| } | ||
| } | ||
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| function formatToken(uint256 _amountWei, address _token) public view returns (string memory) { | ||
| IERC20Metadata token = IERC20Metadata(_token); | ||
| uint8 decimals = token.decimals(); | ||
| string memory symbol = token.symbol(); | ||
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| uint256 tenToDecimals = uint256(10) ** uint256(decimals); | ||
| uint256 tokenWhole = _amountWei / tenToDecimals; | ||
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| uint256 tokenFraction; | ||
| uint8 fractionDigits; | ||
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| if (decimals >= 3) { | ||
| uint256 divider = uint256(10) ** uint256(decimals - 3); | ||
| tokenFraction = (_amountWei % tenToDecimals) / divider; | ||
| fractionDigits = 3; | ||
| } else { | ||
| tokenFraction = _amountWei % tenToDecimals; | ||
| fractionDigits = decimals; | ||
| } | ||
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| string memory tokenWholeStr = Strings.toString(tokenWhole); | ||
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| if (tokenFraction == 0) { | ||
| return string.concat(tokenWholeStr, " ", symbol); | ||
| } | ||
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| string memory tokenFractionStr = Strings.toString(tokenFraction); | ||
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| while (bytes(tokenFractionStr).length < fractionDigits) { | ||
| tokenFractionStr = string.concat("0", tokenFractionStr); | ||
| } | ||
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| bytes memory fractionBytes = bytes(tokenFractionStr); | ||
| uint256 fractionLength = fractionBytes.length; | ||
| while (fractionLength > 0 && fractionBytes[fractionLength - 1] == bytes1("0")) { | ||
| fractionLength--; | ||
| } | ||
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| if (fractionLength == 0) { | ||
| return string.concat(tokenWholeStr, " ", symbol); | ||
| } else { | ||
| bytes memory fractionTrimmed = new bytes(fractionLength); | ||
| for (uint256 i = 0; i < fractionLength; i++) { | ||
| fractionTrimmed[i] = fractionBytes[i]; | ||
| } | ||
| return string.concat(tokenWholeStr, ".", string(fractionTrimmed), " ", symbol); | ||
| } | ||
| } | ||
| } |