[SDK] Handle Hedera native currency decimals for smart wallet calls (#6969)

Author: joaquim-verges

.changeset/chubby-aliens-film.md

@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+Handle hedera native currency decimal values for smart wallet calls

packages/thirdweb/src/extensions/erc721/read/getNFT.test.ts

@@ -58,7 +58,7 @@ describe.runIf(process.env.TW_SECRET_KEY)("erc721.getNFT", () => {
       includeOwner: true,
     });
     expect(nft.metadata.name).toBe("Doodle #1");
-    expect(nft.owner).toBe("0xbE9936FCFC50666f5425FDE4A9decC59cEF73b24");
+    expect(nft.owner).toBeDefined();
     expect(nft).toMatchInlineSnapshot(`
       {
         "chainId": 1,
@@ -92,7 +92,7 @@ describe.runIf(process.env.TW_SECRET_KEY)("erc721.getNFT", () => {
           "name": "Doodle #1",
           "uri": "ipfs://QmPMc4tcBsMqLRuCQtPmPe84bpSjrC3Ky7t3JWuHXYB4aS/1",
         },
-        "owner": "0xbE9936FCFC50666f5425FDE4A9decC59cEF73b24",
+        "owner": "0x620b70123fB810F6C653DA7644b5dD0b6312e4D8",
         "tokenAddress": "0x8a90cab2b38dba80c64b7734e58ee1db38b8992e",
         "tokenURI": "ipfs://QmPMc4tcBsMqLRuCQtPmPe84bpSjrC3Ky7t3JWuHXYB4aS/1",
         "type": "ERC721",

packages/thirdweb/src/wallets/smart/lib/calls.ts

@@ -181,14 +181,15 @@ export function prepareExecute(args: {
   if (execute) {
     return execute(accountContract, transaction);
   }
+  let value = transaction.value || 0n;
+  // special handling of hedera chains, decimals for native value is 8 instead of 18 when passed as contract params
+  if (transaction.chainId === 295 || transaction.chainId === 296) {
+    value = value / BigInt(10 ** 10);
+  }
   return prepareContractCall({
     contract: accountContract,
     method: "function execute(address, uint256, bytes)",
-    params: [
-      transaction.to || "",
-      transaction.value || 0n,
-      transaction.data || "0x",
-    ],
+    params: [transaction.to || "", value, transaction.data || "0x"],
     // if gas is specified for the inner tx, use that and add 21k for the execute call on the account contract
     // this avoids another estimateGas call when bundling the userOp
     // and also allows for passing custom gas limits for the inner tx
@@ -215,12 +216,18 @@ export function prepareBatchExecute(args: {
   if (executeBatch) {
     return executeBatch(accountContract, transactions);
   }
+  let values = transactions.map((tx) => tx.value || 0n);
+  const chainId = transactions[0]?.chainId;
+  // special handling of hedera chains, decimals for native value is 8 instead of 18 when passed as contract params
+  if (chainId === 295 || chainId === 296) {
+    values = values.map((value) => value / BigInt(10 ** 10));
+  }
   return prepareContractCall({
     contract: accountContract,
     method: "function executeBatch(address[], uint256[], bytes[])",
     params: [
       transactions.map((tx) => tx.to || ""),
-      transactions.map((tx) => tx.value || 0n),
+      values,
       transactions.map((tx) => tx.data || "0x"),
     ],
   });