From 0cc8ce284c2ebdab01cfdbf9ede6d24e821f9e0f Mon Sep 17 00:00:00 2001
From: Dhvani Patel <dhvani.patel@uwaterloo.ca>
Date: Wed, 1 May 2024 13:44:43 +0100
Subject: [PATCH] feat: support batch call

---
 packages/world/ts/actions/callFrom.ts | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/packages/world/ts/actions/callFrom.ts b/packages/world/ts/actions/callFrom.ts
index 3659c4ca85..c4b266d6e5 100644
--- a/packages/world/ts/actions/callFrom.ts
+++ b/packages/world/ts/actions/callFrom.ts
@@ -63,11 +63,32 @@ export function callFrom<TChain extends Chain, TAccount extends Account>(
         writeArgs.address !== params.worldAddress ||
         writeArgs.functionName === "call" ||
         writeArgs.functionName === "callFrom" ||
+        writeArgs.functionName === "batchCallFrom" ||
         writeArgs.functionName === "callWithSignature"
       ) {
         return getAction(client, writeContract, "writeContract")(writeArgs);
       }
 
+      if (writeArgs.functionName === "batchCall") {
+        if (!writeArgs.args || !Array.isArray(writeArgs.args) || writeArgs.args.length === 0) {
+          throw new Error("batchCall args should be an array with at least one element");
+        }
+
+        const systemCallFromData = writeArgs.args[0].map((systemCallData: Hex[]) => {
+          return [params.delegatorAddress, ...systemCallData];
+        });
+
+        // Construct args for `batchCallFrom`.
+        const batchCallFromArgs: typeof writeArgs = {
+          ...writeArgs,
+          functionName: "batchCallFrom",
+          args: [systemCallFromData],
+        };
+
+        // Call `writeContract` with the new args.
+        return getAction(client, writeContract, "writeContract")(batchCallFromArgs);
+      }
+
       // Encode the World's calldata (which includes the World's function selector).
       const worldCalldata = encodeFunctionData({
         abi: writeArgs.abi,