From d89b77fc5d7a43547b15c02c722897a926efaf6f Mon Sep 17 00:00:00 2001
From: Thomas <thomas@dcts.dev>
Date: Tue, 12 Nov 2024 23:33:09 +0100
Subject: [PATCH] fix quote cannot have 0 amount

---
 src/app/components/OrderInput.tsx |  4 +++-
 src/app/state/orderInputSlice.ts  | 13 +++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/app/components/OrderInput.tsx b/src/app/components/OrderInput.tsx
index 5d0535a7..360de2f9 100644
--- a/src/app/components/OrderInput.tsx
+++ b/src/app/components/OrderInput.tsx
@@ -26,6 +26,7 @@ import {
   pairAddressIsSet,
   priceIsValid,
   tokenIsSpecified,
+  amountIsPositive,
   submitOrder,
 } from "state/orderInputSlice";
 import { Calculator } from "services/Calculator";
@@ -118,7 +119,8 @@ export function OrderInput() {
     if (
       pairAddressIsSet(pairAddress) &&
       priceIsValid(price, type) &&
-      tokenIsSpecified(specifiedToken)
+      tokenIsSpecified(specifiedToken) &&
+      amountIsPositive(specifiedToken, token1, token2)
     ) {
       dispatch(fetchQuote());
     }
diff --git a/src/app/state/orderInputSlice.ts b/src/app/state/orderInputSlice.ts
index 28f7751f..a990d124 100644
--- a/src/app/state/orderInputSlice.ts
+++ b/src/app/state/orderInputSlice.ts
@@ -216,6 +216,19 @@ export function tokenIsSpecified(specifiedToken: SpecifiedToken): boolean {
   return specifiedToken !== SpecifiedToken.UNSPECIFIED;
 }
 
+export function amountIsPositive(
+  specifiedToken: SpecifiedToken,
+  token1: TokenInput,
+  token2: TokenInput
+): boolean {
+  if (specifiedToken === SpecifiedToken.TOKEN_1) {
+    return token1.amount > 0;
+  } else if (specifiedToken === SpecifiedToken.TOKEN_2) {
+    return token2.amount > 0;
+  }
+  return false;
+}
+
 // for getting balances out of pairSelector slice
 // TODO(dcts): ask @chaotic whether this can live inside pairSelector now that
 // the orderInputState seems not to be needed anymore.