[WIP] added blockchain to @harmony/network

examples/testNode.js

@@ -125,4 +125,4 @@ const acc = wallet.addByPrivateKey(
 // console.log(getContractAddress(acc.publicKey, 248));
 
 const harmony = new Harmony('https://devnet.harmony.one');
-console.log(harmony);
+console.log(harmony.blockchain);

packages/harmony-core/src/core.ts

@@ -1,7 +1,7 @@
 import * as crypto from '@harmony/crypto';
 import * as utils from '@harmony/utils';
 
-import { HttpProvider, Messenger } from '@harmony/network';
+import { HttpProvider, Messenger, Blockchain } from '@harmony/network';
 import { TransactionFactory } from '@harmony/transaction';
 import { Wallet } from '@harmony/account';
 
@@ -9,6 +9,7 @@ class Harmony {
   messenger: Messenger;
   transactions: TransactionFactory;
   wallet: Wallet;
+  blockchain: Blockchain;
   crypto: any;
   utils: any;
   private provider: HttpProvider;
@@ -16,6 +17,7 @@ class Harmony {
   constructor(url: string) {
     this.provider = new HttpProvider(url);
     this.messenger = new Messenger(this.provider);
+    this.blockchain = new Blockchain(this.messenger);
     this.transactions = new TransactionFactory(this.messenger);
     this.wallet = new Wallet(this.messenger);
     this.crypto = crypto;

packages/harmony-network/src/blockchain/blockchain.ts

@@ -0,0 +1,22 @@
+import { RPCMethod } from './rpc';
+import { Messenger } from '../messenger/messenger';
+
+class Blockchain {
+  messenger: Messenger;
+
+  constructor(messenger: Messenger) {
+    this.messenger = messenger;
+  }
+
+  getBalance = async (address: string) => {
+    const result = await this.messenger.send(RPCMethod.GetBalance, address);
+    return result;
+  };
+
+  getLatestBlock = async () => {
+    const result = await this.messenger.send(RPCMethod.GetLatestBlock, '');
+    return result;
+  };
+}
+
+export { Blockchain };

packages/harmony-network/src/index.ts

@@ -9,6 +9,7 @@ export * from './messenger/responseMiddleware';
 export * from './blockchain/rpcBuilder';
 export * from './blockchain/net';
 export * from './blockchain/rpc';
+export * from './blockchain/blockchain';
 // utils
 export * from './util';
 // types