From f1934fec3ea5930c7883b17b61cc2598c0132498 Mon Sep 17 00:00:00 2001
From: alexcos20 <alex.coseru@gmail.com>
Date: Tue, 27 Oct 2020 09:22:22 -0700
Subject: [PATCH] use Decimal

---
 src/hooks/usePricing/usePricing.ts | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/hooks/usePricing/usePricing.ts b/src/hooks/usePricing/usePricing.ts
index 08ec640..6a50848 100644
--- a/src/hooks/usePricing/usePricing.ts
+++ b/src/hooks/usePricing/usePricing.ts
@@ -87,10 +87,17 @@ function usePricing(ddo: DDO): UsePricing {
     tokensToMint: string
   ): Promise<TransactionReceipt | void> {
     Logger.log('mint function', dataToken, accountId)
-    const balance = await ocean.datatokens.balance(dataToken, accountId)
-    if (parseFloat(tokensToMint) > parseFloat(balance)) {
-      tokensToMint = String(parseFloat(tokensToMint) - parseFloat(balance))
-      const tx = await ocean.datatokens.mint(dataToken, accountId, tokensToMint)
+    const balance = new Decimal(
+      await ocean.datatokens.balance(dataToken, accountId)
+    )
+    const tokens = new Decimal(tokensToMint)
+    if (tokens > balance) {
+      const mintAmount = tokens.minus(balance)
+      const tx = await ocean.datatokens.mint(
+        dataToken,
+        accountId,
+        mintAmount.toString()
+      )
       return tx
     }
   }