Add multisender functionality with UI components and blockchain integration

src/utile/blockchain.js

@@ -0,0 +1,72 @@
+import { tokenAbi } from "../tokenAbi"
+import { ethers,formatEther,parseEther } from "ethers";
+
+const contractAddress = "0x1ebA64fDe3BF54545c86B9e3bB40c72f50f8D012";
+const abi = [{"inputs": [{"internalType": "address","name": "token","type": "address"},{"internalType": "address[]","name": "addresses","type": "address[]"},{"internalType": "uint256[]","name": "amounts","type": "uint256[]"},{"internalType": "bool","name": "isToken","type": "bool"}],"name": "batchTransferFrom","outputs": [{"internalType": "bool","name": "","type": "bool"}],"stateMutability": "payable","type": "function"}]
+
+
+export const multisend = async (tokenAddress, provider, from, toArray, amountArray) => {
+    let totalAmount = 0;
+    let isToken = true;
+    let status;
+
+    //console.log(tokenAddress, provider, from)
+
+    amountArray.map((row)=> totalAmount += parseFloat(formatEther(row)));
+
+    const signer = await provider.getSigner();
+    const contract = new ethers.Contract(contractAddress, abi, signer);
+
+    if(toArray.length !== 0 && amountArray.length !== 0 && toArray.length === amountArray.length)
+    {
+      try {
+        const tokenContract = new ethers.Contract(tokenAddress, tokenAbi, signer); 
+
+        let balance = isToken ? await tokenContract.balanceOf(from) : await provider.getBalance(from);
+        if(balance >= parseEther(totalAmount.toString())){
+          if(isToken)
+          { 
+            ////token approve
+            // const tx = await tokenContract.approve(
+            //   contractAddress,
+            //   parseEther(totalAmount.toString())
+            // )
+            // await provider.waitForTransaction(tx.hash);
+          }
+          } else {
+          throw new Error("잔액부족")
+        }
+      } catch (error) {
+        alert(error)
+      }
+
+      try {
+        const tx = await contract.batchTransferFrom(
+          tokenAddress,
+          toArray,
+          amountArray,
+          isToken,
+          {value : isToken ? 0 : parseEther(totalAmount.toString())}
+        );
+
+        status = await provider.waitForTransaction(tx.hash);  
+      } catch (error) {
+        console.log(error)        
+      }
+    } else {
+      alert("양식이 맞지 않습니다.")
+    }
+  
+    
+    return status;
+}
+
+export const getBalance = async (tokenAddress, provider, address) => {
+    const signer = await provider.getSigner();
+
+    const tokenContract = new ethers.Contract(tokenAddress, tokenAbi, signer); 
+
+    let balance =  await tokenContract.balanceOf(address)
+   
+    return balance;
+}