low final HF warning

Author: mgrabina

src/components/transactions/Switch/BaseSwitchModalContent.tsx

@@ -490,7 +490,7 @@ export const BaseSwitchModalContent = ({
   }, [txError]);
 
   // Compute HF effect of withdrawing inputAmount (copied from SwitchModalTxDetails)
-  const { hfEffectOfFromAmount } = useMemo(() => {
+  const { hfEffectOfFromAmount, hfAfterSwap } = useMemo(() => {
     try {
       if (!poolReserve || !userReserve || !extendedUser || !switchRates || !targetReserve)
         return { hfEffectOfFromAmount: '0' };
@@ -519,7 +519,7 @@ export const BaseSwitchModalContent = ({
         hfAfterSwap: hfAfterSwap.toString(),
       };
     } catch {
-      return { hfEffectOfFromAmount: '0' };
+      return { hfEffectOfFromAmount: '0', hfAfterSwap: undefined };
     }
   }, [
     poolReserve,
@@ -531,6 +531,16 @@ export const BaseSwitchModalContent = ({
     safeSlippage,
   ]);
 
+  const isHFLow = useMemo(() => {
+    if (!hfAfterSwap) return false;
+
+    const hfNumber = new BigNumber(hfAfterSwap);
+
+    if (hfNumber.lt(0)) return false;
+
+    return hfNumber.lt(1.05);
+  }, [hfAfterSwap]);
+
   const shouldUseFlashloanFn = (healthFactor: string, hfEffectOfFromAmount: string) => {
     return (
       healthFactor !== '-1' &&
@@ -954,6 +964,17 @@ export const BaseSwitchModalContent = ({
                 </Warning>
               )}
 
+              {modalType === ModalType.CollateralSwap && isHFLow && (
+                <Warning severity="error" icon={false} sx={{ mt: 5 }}>
+                  <Typography variant="caption">
+                    <Trans>
+                      Low health factor after swap. Please select a different asset or lower the
+                      amount.
+                    </Trans>
+                  </Typography>
+                </Warning>
+              )}
+
               <SwitchErrors
                 ratesError={ratesError}
                 balance={selectedInputToken.balance}
@@ -1057,7 +1078,10 @@ export const BaseSwitchModalContent = ({
                     slippageValidation?.severity === ValidationSeverity.ERROR ||
                     isSwappingSafetyModuleToken ||
                     (requireConfirmation && !highPriceImpactConfirmed) ||
-                    (shouldUseFlashloan === true && !!poolReserve && !poolReserve.flashLoanEnabled)
+                    (shouldUseFlashloan === true &&
+                      !!poolReserve &&
+                      !poolReserve.flashLoanEnabled) ||
+                    (modalType === ModalType.CollateralSwap && isHFLow)
                   }
                   chainId={selectedChainId}
                   switchRates={switchRates}

src/locales/el/messages.js

@@ -2868,6 +2868,10 @@ msgstr "and about SPK program"
 msgid "DAI balance will be converted via DSR contracts and then supplied as sDAI. Switching incurs no additional costs and no slippage."
 msgstr "DAI balance will be converted via DSR contracts and then supplied as sDAI. Switching incurs no additional costs and no slippage."
 
+#: src/components/transactions/Switch/BaseSwitchModalContent.tsx
+msgid "Low health factor after swap. Please select a different asset or lower the amount."
+msgstr "Low health factor after swap. Please select a different asset or lower the amount."
+
 #: src/components/transactions/DebtSwitch/DebtSwitchModalContent.tsx
 msgid "Select an asset"
 msgstr "Select an asset"