From 23737ce4d0bfd5652f17fa917e5b5ea001f8df49 Mon Sep 17 00:00:00 2001
From: Willian Mitsuda <wmitsuda@gmail.com>
Date: Wed, 13 Oct 2021 15:34:30 -0300
Subject: [PATCH] Support trial and error of multiple event signatures

---
 src/transaction/LogEntry.tsx | 22 ++++++++++++----------
 src/useTopic0.ts             |  5 +++--
 topic0                       |  2 +-
 3 files changed, 16 insertions(+), 13 deletions(-)

diff --git a/src/transaction/LogEntry.tsx b/src/transaction/LogEntry.tsx
index 60b1f39..f404ad3 100644
--- a/src/transaction/LogEntry.tsx
+++ b/src/transaction/LogEntry.tsx
@@ -22,19 +22,21 @@ const LogEntry: React.FC<LogEntryProps> = ({ txData, log, logDesc }) => {
   const topic0 = useTopic0(rawTopic0);
 
   const topic0LogDesc = useMemo(() => {
-    if (!topic0?.signature) {
+    if (!topic0?.signatures) {
       return undefined;
     }
-    const sig = topic0.signature;
-    const logFragment = Fragment.fromString(`event ${sig}`);
-    const intf = new Interface([logFragment]);
-    try {
-      return intf.parseLog(log);
-    } catch (err) {
-      // TODO: try other indexed/non-indexed combinations?
-      console.error(err);
-      return undefined;
+
+    const sigs = topic0.signatures;
+    for (const sig of sigs) {
+      const logFragment = Fragment.fromString(`event ${sig}`);
+      const intf = new Interface([logFragment]);
+      try {
+        return intf.parseLog(log);
+      } catch (err) {
+        // Ignore on purpose; try to match other sigs
+      }
     }
+    return undefined;
   }, [topic0, log]);
 
   const resolvedLogDesc = logDesc ?? topic0LogDesc;
diff --git a/src/useTopic0.ts b/src/useTopic0.ts
index 314a39e..adcef1e 100644
--- a/src/useTopic0.ts
+++ b/src/useTopic0.ts
@@ -3,7 +3,7 @@ import { RuntimeContext } from "./useRuntime";
 import { topic0URL } from "./url";
 
 export type Topic0Entry = {
-  signature: string | undefined;
+  signatures: string[] | undefined;
 };
 
 const fullCache = new Map<string, Topic0Entry | null>();
@@ -46,8 +46,9 @@ export const useTopic0 = (
 
         // Get only the first occurrence, for now ignore alternative param names
         const sig = await res.text();
+        const sigs = sig.split(";");
         const entry: Topic0Entry = {
-          signature: sig,
+          signatures: sigs,
         };
         setEntry(entry);
         fullCache.set(topic0, entry);
diff --git a/topic0 b/topic0
index 052043e..b30f9d4 160000
--- a/topic0
+++ b/topic0
@@ -1 +1 @@
-Subproject commit 052043e6d51dd18cffb1a5a450262f47e5638684
+Subproject commit b30f9d442081a231641c5cef196be79650306e55