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feat(ui-ux): allow dusd loops in vaults (#4114)
* feat(ui-ux): allow dusd loops in vaults * feat(ui-ux): keep dusd loan requirement of 50% dfi * chore(translations): update error message texts and add translation placeholder * feat(ui-ux): allow removal of dfi asset if vault will be left with only dusd * feat(ui-ux): disable load for non-dusd token when 100% col is dusd * feat(ui-ux): use symbol instead of displaySymbol * feat(ui-ux): use symbol instead of displaySymbol * chore(translations): update translation for required collateral error message * feat(ui-ux): feature-gate dusd-loop based on wallet-website api flags * chore(translations): update insufficient dusd error message * Keep previous error message when dusd loop is disabled * update docker-compose * update vault details collateral info message
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61 changes: 0 additions & 61 deletions
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...pp/app/screens/AppNavigator/screens/Loans/hooks/DFIRequirementForDusdLoanAndCollateral.ts
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mobile-app/app/screens/AppNavigator/screens/Loans/hooks/ValidateLoanAndCollateral.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| import { | ||
| CollateralToken, | ||
| LoanToken, | ||
| LoanVaultTokenAmount, | ||
| } from "@defichain/whale-api-client/dist/api/loan"; | ||
| import { RootState } from "@store"; | ||
| import BigNumber from "bignumber.js"; | ||
| import { useSelector } from "react-redux"; | ||
| import { useFeatureFlagContext } from "@contexts/FeatureFlagContext"; | ||
| import { getActivePrice } from "../../Auctions/helpers/ActivePrice"; | ||
|
|
||
| interface useValidateLoanAndCollateralProps { | ||
| collateralAmounts: LoanVaultTokenAmount[]; | ||
| loanAmounts: LoanVaultTokenAmount[]; | ||
| collateralValue: BigNumber; | ||
| loanValue: BigNumber; | ||
| loanToken: LoanToken; | ||
| minColRatio: string; | ||
| } | ||
|
|
||
| /** | ||
| * To check if current vault has either at least 50% of DFI or 100% of DUSD as total collateral when taking DUSD loan | ||
| * | ||
| * Modified formula from [DeFiCh/ain] to include new loan amount to be taken during `Borrow` flow | ||
| * Source: https://github.com/DeFiCh/ain/blob/07ba855f73c7fdfb0b2f10fc3b31fe73c17b1630/src/dfi/consensus/txvisitor.cpp#L270 | ||
| * | ||
| * Note: DUSD loops in vaults are now allowed - https://github.com/DeFiCh/ain/pull/1971 | ||
| * | ||
| * @returns | ||
| */ | ||
| export function useValidateLoanAndCollateral( | ||
| props: useValidateLoanAndCollateralProps, | ||
| ) { | ||
| const { isFeatureAvailable } = useFeatureFlagContext(); | ||
| const collateralTokens: CollateralToken[] = useSelector( | ||
| (state: RootState) => state.loans.collateralTokens, | ||
| ); | ||
| const isTakingDUSDLoan = props.loanToken.token.symbol === "DUSD"; | ||
|
|
||
| const dfiCollateralToken = collateralTokens.find( | ||
| (col) => col.token.symbol === "DFI", | ||
| ); | ||
|
|
||
| const dfiActivePrice = getActivePrice( | ||
| "DFI", | ||
| dfiCollateralToken?.activePrice, | ||
| dfiCollateralToken?.factor, | ||
| "ACTIVE", | ||
| "COLLATERAL", | ||
| ); | ||
|
|
||
| const dfiCollateralValue = new BigNumber(dfiActivePrice).multipliedBy( | ||
| props.collateralAmounts.find((col) => col.symbol === "DFI")?.amount ?? 0, | ||
| ); | ||
| const totalRequiredCollateral = new BigNumber(props.loanValue) | ||
| .multipliedBy(props.minColRatio) | ||
| .dividedBy(100); | ||
|
|
||
| const isDFIGreaterThanHalfOfRequiredCollateral = | ||
| dfiCollateralValue.isGreaterThanOrEqualTo( | ||
| totalRequiredCollateral.dividedBy(2), | ||
| ); | ||
|
|
||
| // check if all collaterals is of DUSD token | ||
| const isDUSD100PercentOfCollateral = props.collateralAmounts.every( | ||
| (col) => col.symbol === "DUSD", | ||
| ); | ||
|
|
||
| const isNonDUSDLoanAllowed = | ||
| !isTakingDUSDLoan && isDFIGreaterThanHalfOfRequiredCollateral; | ||
|
|
||
| const isDUSDLoanAllowed = | ||
| isTakingDUSDLoan && | ||
| (isDFIGreaterThanHalfOfRequiredCollateral || | ||
| (isFeatureAvailable("loop_dusd") && isDUSD100PercentOfCollateral)); | ||
|
|
||
| return { | ||
| isLoanAllowed: isNonDUSDLoanAllowed || isDUSDLoanAllowed, | ||
| }; | ||
| } |
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