From 97e46108cc7113b16f5a923c0ac302d78e68a1e4 Mon Sep 17 00:00:00 2001
From: Willian Mitsuda <wmitsuda@gmail.com>
Date: Thu, 29 Jul 2021 03:05:05 -0300
Subject: [PATCH] Set london hardfork block numbers per network id

---
 src/special/London.tsx | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/special/London.tsx b/src/special/London.tsx
index 77b48cc..65e7ba4 100644
--- a/src/special/London.tsx
+++ b/src/special/London.tsx
@@ -3,22 +3,29 @@ import { useLatestBlock } from "../useLatestBlock";
 import { RuntimeContext } from "../useRuntime";
 import Countdown from "./Countdown";
 
-const londonBlockNumber = 12965000;
+const londonBlockNumber: { [chainId: string]: number } = {
+  "1": 12965000,
+  "3": 10499401,
+  "4": 8897988,
+  "5": 5062605,
+};
 
 const London: React.FC = () => {
   const { provider } = useContext(RuntimeContext);
   const block = useLatestBlock(provider);
-  if (!block) {
+  if (!provider || !block) {
     return <></>;
   }
 
   // Display countdown
-  if (provider && block.number < londonBlockNumber) {
+  const targetBlockNumber =
+    londonBlockNumber[provider.network.chainId.toString()];
+  if (block.number < targetBlockNumber) {
     return (
       <Countdown
         provider={provider}
         currentBlock={block}
-        targetBlock={londonBlockNumber}
+        targetBlock={targetBlockNumber}
       />
     );
   }