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Merge pull request #37 from Laina-Protocol/feat/borrow-modal
Feat: Borrow modal, refetch balances on deposit/borrow
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| export interface LoadingProps { | ||
| size?: 'xs' | 'sm' | 'md' | 'lg'; | ||
| } | ||
|
|
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| export const Loading = ({ size = 'md' }: LoadingProps) => ( | ||
| <span className={`loading loading-${size} loading-spinner`} /> | ||
| ); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| // Stellar operates with a precision of 7 decimal places for assets like XLM & USDC. | ||
| export const to7decimals = (amount: string): bigint => BigInt(amount) * BigInt(10_000_000); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| import { Button } from '@components/Button'; | ||
| import { Loading } from '@components/Loading'; | ||
| import { contractClient as loanManagerClient } from '@contracts/loan_manager'; | ||
| import { type ChangeEvent, useState } from 'react'; | ||
| import type { Currency } from 'src/currencies'; | ||
| import { to7decimals } from 'src/lib/converters'; | ||
| import { useWallet } from 'src/stellar-wallet'; | ||
|
|
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| export interface BorrowModalProps { | ||
| modalId: string; | ||
| onClose: () => void; | ||
| currency: Currency; | ||
| collateral: Currency; | ||
| } | ||
|
|
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| // TODO: calculate this from the amount of funds in the pool. | ||
| const MAX_LOAN = 10000; | ||
|
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| export const BorrowModal = ({ modalId, onClose, currency, collateral }: BorrowModalProps) => { | ||
| const { name, symbol, contractId: loanCurrencyId } = currency; | ||
| const { wallet, balances, signTransaction, refetchBalances } = useWallet(); | ||
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| const [isBorrowing, setIsBorrowing] = useState(false); | ||
| const [loanAmount, setLoanAmount] = useState('0'); | ||
| const [collateralAmount, setCollateralAmount] = useState('0'); | ||
|
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| const collateralBalance = balances[collateral.symbol]; | ||
|
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| // The modal is impossible to open without collateral balance. | ||
| if (!collateralBalance) return null; | ||
|
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| const closeModal = () => { | ||
| refetchBalances(); | ||
| setLoanAmount('0'); | ||
| setCollateralAmount('0'); | ||
| onClose(); | ||
| }; | ||
|
|
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| const handleBorrowClick = async () => { | ||
| if (!wallet) { | ||
| alert('Please connect your wallet first!'); | ||
| return; | ||
| } | ||
|
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| setIsBorrowing(true); | ||
|
|
||
| try { | ||
| loanManagerClient.options.publicKey = wallet.address; | ||
|
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| const tx = await loanManagerClient.initialize({ | ||
| user: wallet.address, | ||
| borrowed: to7decimals(loanAmount), | ||
| borrowed_from: loanCurrencyId, | ||
| collateral: to7decimals(collateralAmount), | ||
| collateral_from: collateral.contractId, | ||
| }); | ||
| await tx.signAndSend({ signTransaction }); | ||
| alert('Loan created succesfully!'); | ||
| closeModal(); | ||
| } catch (err) { | ||
| console.error('Error borrowing', err); | ||
| alert('Error borrowing'); | ||
| } | ||
|
|
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| setIsBorrowing(false); | ||
| }; | ||
|
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| const handleLoanAmountChange = (ev: ChangeEvent<HTMLInputElement>) => { | ||
| setLoanAmount(ev.target.value); | ||
| }; | ||
|
|
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| const handleCollateralAmountChange = (ev: ChangeEvent<HTMLInputElement>) => { | ||
| setCollateralAmount(ev.target.value); | ||
| }; | ||
|
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| const isBorrowDisabled = loanAmount === '0' || collateralAmount === '0'; | ||
|
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| return ( | ||
| <dialog id={modalId} className="modal"> | ||
| <div className="modal-box"> | ||
| <h3 className="font-bold text-lg mb-8">Borrow {name}</h3> | ||
|
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| <p className="text-lg mb-2">Amount to borrow</p> | ||
| <input | ||
| type="range" | ||
| min={0} | ||
| max={MAX_LOAN} | ||
| value={loanAmount} | ||
| className="range" | ||
| onChange={handleLoanAmountChange} | ||
| /> | ||
| <div className="flex w-full justify-between px-2 text-xs"> | ||
| <span>|</span> | ||
| <span>|</span> | ||
| <span>|</span> | ||
| <span>|</span> | ||
| <span>|</span> | ||
| </div> | ||
| <p> | ||
| {loanAmount} {symbol} out of {MAX_LOAN} {symbol} | ||
| </p> | ||
|
|
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| <p className="text-lg mb-2 mt-4">Amount of collateral</p> | ||
| <input | ||
| type="range" | ||
| min={0} | ||
| max={collateralBalance.balance} | ||
| value={collateralAmount} | ||
| className="range" | ||
| onChange={handleCollateralAmountChange} | ||
| /> | ||
| <div className="flex w-full justify-between px-2 text-xs"> | ||
| <span>|</span> | ||
| <span>|</span> | ||
| <span>|</span> | ||
| <span>|</span> | ||
| <span>|</span> | ||
| </div> | ||
| <p> | ||
| {collateralAmount} {collateral.symbol} out of {collateralBalance.balance} {collateral.symbol} | ||
| </p> | ||
|
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||
| <div className="flex flex-row justify-end mt-8"> | ||
| <Button onClick={closeModal} className="btn-ghost mr-4"> | ||
| Cancel | ||
| </Button> | ||
| {!isBorrowing ? ( | ||
| <Button disabled={isBorrowDisabled} onClick={handleBorrowClick}> | ||
| Borrow | ||
| </Button> | ||
| ) : ( | ||
| <Button disabled> | ||
| <Loading /> | ||
| Borrowing | ||
| </Button> | ||
| )} | ||
| </div> | ||
| </div> | ||
| {/* Invisible backdrop that closes the modal on click */} | ||
| <form method="dialog" className="modal-backdrop"> | ||
| <button onClick={closeModal} type="button"> | ||
| close | ||
| </button> | ||
| </form> | ||
| </dialog> | ||
| ); | ||
| }; |
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