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packages/dev-frontend/src/components/Trove/ExpensiveTroveChangeWarning.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| import React, { useEffect } from "react"; | ||
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|
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| import { Decimal, TroveChange } from "@liquity/lib-base"; | ||
| import { PopulatedEthersLiquityTransaction } from "@liquity/lib-ethers"; | ||
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| import { useLiquity } from "../../hooks/LiquityContext"; | ||
| import { Warning } from "../Warning"; | ||
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| export type GasEstimationState = | ||
| | { type: "idle" | "inProgress" } | ||
| | { type: "complete"; populatedTx: PopulatedEthersLiquityTransaction }; | ||
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| type ExpensiveTroveChangeWarningParams = { | ||
| troveChange?: Exclude<TroveChange<Decimal>, { type: "invalidCreation" }>; | ||
| maxBorrowingRate: Decimal; | ||
| borrowingFeeDecayToleranceMinutes: number; | ||
| gasEstimationState: GasEstimationState; | ||
| setGasEstimationState: (newState: GasEstimationState) => void; | ||
| }; | ||
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| export const ExpensiveTroveChangeWarning: React.FC<ExpensiveTroveChangeWarningParams> = ({ | ||
| troveChange, | ||
| maxBorrowingRate, | ||
| borrowingFeeDecayToleranceMinutes, | ||
| gasEstimationState, | ||
| setGasEstimationState | ||
| }) => { | ||
| const { liquity } = useLiquity(); | ||
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| useEffect(() => { | ||
| if (troveChange && troveChange.type !== "closure") { | ||
| setGasEstimationState({ type: "inProgress" }); | ||
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| let cancelled = false; | ||
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| const timeoutId = setTimeout(async () => { | ||
| const populatedTx = await (troveChange.type === "creation" | ||
| ? liquity.populate.openTrove(troveChange.params, { | ||
| maxBorrowingRate, | ||
| borrowingFeeDecayToleranceMinutes | ||
| }) | ||
| : liquity.populate.adjustTrove(troveChange.params, { | ||
| maxBorrowingRate, | ||
| borrowingFeeDecayToleranceMinutes | ||
| })); | ||
|
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| if (!cancelled) { | ||
| setGasEstimationState({ type: "complete", populatedTx }); | ||
| console.log( | ||
| "Estimated TX cost: " + | ||
| Decimal.from(`${populatedTx.rawPopulatedTransaction.gasLimit}`).prettify(0) | ||
| ); | ||
| } | ||
| }, 333); | ||
|
|
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| return () => { | ||
| clearTimeout(timeoutId); | ||
| cancelled = true; | ||
| }; | ||
| } else { | ||
| setGasEstimationState({ type: "idle" }); | ||
| } | ||
| // eslint-disable-next-line react-hooks/exhaustive-deps | ||
| }, [troveChange]); | ||
|
|
||
| if ( | ||
| troveChange && | ||
| gasEstimationState.type === "complete" && | ||
| gasEstimationState.populatedTx.gasHeadroom !== undefined && | ||
| gasEstimationState.populatedTx.gasHeadroom >= 200000 | ||
| ) { | ||
| return troveChange.type === "creation" ? ( | ||
| <Warning> | ||
| The cost of opening a Trove in this collateral ratio range is high. It is recommended to | ||
| choose a slightly different collateral ratio. | ||
| </Warning> | ||
| ) : ( | ||
| <Warning> | ||
| The cost of adjusting a Trove into this collateral ratio range is high. It is recommended to | ||
| choose a slightly different collateral ratio. | ||
| </Warning> | ||
| ); | ||
| } | ||
|
|
||
| return null; | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| import { Box, Flex, Text } from "theme-ui"; | ||
|
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| import { Icon } from "./Icon"; | ||
|
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| export const Warning: React.FC = ({ children }) => ( | ||
| <Box | ||
| sx={{ | ||
| display: "flex", | ||
| flexDirection: "column", | ||
| justifyContent: "space-around", | ||
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| mb: [2, 3], | ||
| p: 3, | ||
|
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| border: 1, | ||
| borderRadius: "8px", | ||
| borderColor: "warning", | ||
| boxShadow: 2 | ||
| // bg: "rgba(46, 182, 234, 0.05)" | ||
| }} | ||
| > | ||
| <Flex sx={{ alignItems: "center" }}> | ||
| <Icon name="exclamation-triangle" size="lg" /> | ||
| <Text sx={{ ml: 2 }}>{children}</Text> | ||
| </Flex> | ||
| </Box> | ||
| ); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| import { useEffect, useState } from "react"; | ||
| import { Decimal, TroveChange } from "@liquity/lib-base"; | ||
|
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| type ValidTroveChange = Exclude<TroveChange<Decimal>, { type: "invalidCreation" }>; | ||
|
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| const paramsEq = (a?: Decimal, b?: Decimal) => (a && b ? a.eq(b) : !a && !b); | ||
|
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| const equals = (a: ValidTroveChange, b: ValidTroveChange): boolean => { | ||
| return ( | ||
| a.type === b.type && | ||
| paramsEq(a.params.borrowLUSD, b.params.borrowLUSD) && | ||
| paramsEq(a.params.repayLUSD, b.params.repayLUSD) && | ||
| paramsEq(a.params.depositCollateral, b.params.depositCollateral) && | ||
| paramsEq(a.params.withdrawCollateral, b.params.withdrawCollateral) | ||
| ); | ||
| }; | ||
|
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| export const useStableTroveChange = ( | ||
| troveChange: ValidTroveChange | undefined | ||
| ): ValidTroveChange | undefined => { | ||
| const [stableTroveChange, setStableTroveChange] = useState(troveChange); | ||
|
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| useEffect(() => { | ||
| if (!!stableTroveChange !== !!troveChange) { | ||
| setStableTroveChange(troveChange); | ||
| } else if (stableTroveChange && troveChange && !equals(stableTroveChange, troveChange)) { | ||
| setStableTroveChange(troveChange); | ||
| } | ||
| }, [stableTroveChange, troveChange]); | ||
|
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| return stableTroveChange; | ||
| }; |