Create blockchain-service.js

Author: KOSASIH

services/blockchain-service.js

@@ -0,0 +1,39 @@
+import Web3 from 'web3';
+import { v4 as uuidv4 } from 'uuid';
+
+class BlockchainService {
+  constructor() {
+    this.web3 = new Web3(new Web3.providers.HttpProvider('https://mainnet.infura.io/v3/YOUR_PROJECT_ID'));
+    this.contracts = {};
+  }
+
+  async deployContract(contractCode) {
+    const contractId = uuidv4();
+    const contract = await this.web3.eth.compile(contractCode);
+    await this.web3.eth.deployContract(contract, {
+      from: '0x1234567890abcdef',
+      gas: '2000000',
+    });
+    this.contracts[contractId] = contract;
+    return contractId;
+  }
+
+  async invokeContractFunction(contractId, functionName, args) {
+    const contract = this.contracts[contractId];
+    if (!contract) {
+      throw new Error('Contract not found');
+    }
+    const result = await contract.methods[functionName](...args).call();
+    return result;
+  }
+
+  async getBlockNumber() {
+    return await this.web3.eth.getBlockNumber();
+  }
+
+  async getTransactionCount(address) {
+    return await this.web3.eth.getTransactionCount(address);
+  }
+}
+
+export default BlockchainService;