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Merge pull request #4 from La-DAO/feat/helper-for-ui
Feat/helper for UI
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| // SPDX-License-Identifier: MIT | ||
| pragma solidity ^0.8.20; | ||
|
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| import {Application, ApplicationStatus, CreditTalentCenter} from "./CreditTalentCenter.sol"; | ||
| import {IMorpho, Id, MarketParams, Market, Position} from "@morpho/contracts/interfaces/IMorpho.sol"; | ||
| import {MarketParamsLib} from "@morpho/contracts/libraries/MarketParamsLib.sol"; | ||
| import {SharesMathLib} from "@morpho/contracts/libraries/SharesMathLib.sol"; | ||
| import {IIrm} from "@morpho/contracts/interfaces/IIrm.sol"; | ||
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| contract UICreditTalentHelper { | ||
| using MarketParamsLib for MarketParams; | ||
| using SharesMathLib for uint256; | ||
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| // Number of seconds in a year (365 days) | ||
| uint256 private constant SECONDS_PER_YEAR = 365 days; | ||
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| // Scaling factors | ||
| uint256 private constant SCALING_FACTOR = 1e18; | ||
| uint256 private constant RAY = 1e27; | ||
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| /** | ||
| * @notice Get user loan information | ||
| * @param user from whom to get loan information | ||
| * @return creditLine amount approved by underwriter to user | ||
| * @return debtBalance borrowed + accrued interest amount by user currently | ||
| * @return interestRatePerSecond scaled 1e18 (see https://docs.morpho.org/morpho/contracts/irm/#borrow-apy to convert to APY) | ||
| */ | ||
| function getUserLoanInfo(address creditCenter, address user) | ||
| external | ||
| view | ||
| returns (uint256 creditLine, uint256 debtBalance, uint256 interestRatePerSecond) | ||
| { | ||
| CreditTalentCenter creditTalent = CreditTalentCenter(creditCenter); | ||
| Application memory application; | ||
| (,,, application.underwriter, application.status, application.irm) = creditTalent.applicationInfo(user); | ||
| if (application.underwriter == address(0) || application.status != ApplicationStatus.Approved) { | ||
| return (0, 0, 0); | ||
| } | ||
| creditLine = creditTalent.creditShares(application.underwriter); | ||
| address irm = application.irm == address(0) ? creditTalent.adpativeIrm() : application.irm; | ||
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| IMorpho morpho = creditTalent.morpho(); | ||
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| MarketParams memory marketParams = MarketParams( | ||
| creditTalent.underwritingAsset(), | ||
| creditTalent.creditPoints(), | ||
| address(creditTalent), | ||
| irm, | ||
| creditTalent.DEFAULT_LLTV() | ||
| ); | ||
| Position memory morphoPosition = morpho.position(marketParams.id(), user); | ||
| Market memory market = morpho.market(marketParams.id()); | ||
| debtBalance = | ||
| uint256(morphoPosition.borrowShares).toAssetsUp(market.totalBorrowAssets, market.totalBorrowShares); | ||
| interestRatePerSecond = IIrm(irm).borrowRateView(marketParams, market); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| // SPDX-License-Identifier: MIT | ||
| pragma solidity ^0.8.20; | ||
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| import {IMorpho} from "@morpho/contracts/interfaces/IMorpho.sol"; | ||
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| enum ApplicationStatus { | ||
| None, | ||
| Pending, | ||
| Approved, | ||
| Rejected | ||
| } | ||
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| struct Underwriter { | ||
| address underwriter; | ||
| uint256 approvalAmount; | ||
| address[] approvedApplicants; | ||
| } | ||
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| struct Application { | ||
| uint256 id; | ||
| address applicant; | ||
| bytes32 dataHash; | ||
| address underwriter; | ||
| ApplicationStatus status; | ||
| address irm; | ||
| } | ||
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| interface ICreditTalent { | ||
| /// Events | ||
| event ApplicationCreated(uint256 id, address indexed applicant, bytes32 dataHash); | ||
| event ApplicationApproved( | ||
| uint256 id, address indexed applicant, address indexed underwriter, uint256 amount, uint256 interestRate | ||
| ); | ||
| event ApplicationRejected(uint256 id, address indexed applicant, address indexed underwriter, string reason); | ||
| event UnderwriterSet(address indexed account, uint256 approvalPower); | ||
| event FixedRateIrmSet(uint256 indexed interestRate, address irm); | ||
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| /// Custom errors | ||
| error CrediTalentCenter_zeroAddress(); | ||
| error CrediTalentCenter_applicationAlreadyExists(); | ||
| error CrediTalentCenter_fixedRateIrmAlreadyExists(); | ||
| error CreditTalentCenter_invalidApplicationId(); | ||
| error CreditTalentCenter_applicationNotPending(); | ||
| error CreditTalentCenter_insufficientUnderwritingPower(); | ||
| error CreditTalentCenter_invalidInterestRate(); | ||
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| /// View | ||
| function underwritingAsset() external view returns (address); | ||
| function creditPoints() external view returns (address); | ||
| function DEFAULT_LLTV() external view returns (uint256); | ||
| function adpativeIrm() external view returns (address); | ||
| function morpho() external view returns (IMorpho); | ||
| function applicationInfo(address user) | ||
| external | ||
| view | ||
| returns ( | ||
| uint256 id, | ||
| address applicant, | ||
| bytes32 dataHash, | ||
| address underwriter, | ||
| ApplicationStatus status, | ||
| address irm | ||
| ); | ||
| function creditShares(address underwriter) external view returns (uint256); | ||
| } |
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