Merge pull request #39 from ainize-team/feature/yoojin/seperate_ain

Add ainModule

src/ain.ts

@@ -0,0 +1,48 @@
+import Ain from "@ainblockchain/ain-js";
+import { getBlockChainEndpoint } from "./constants";
+import { TransactionBody } from "@ainblockchain/ain-util";
+
+// NOTE(yoojin): Plz suggest a good name.
+export default class AinModule {
+  private ain?: Ain;
+  private static instance: AinModule;
+
+  static getInstance() {
+    if (!AinModule.instance) {
+      AinModule.instance = new AinModule();
+    }
+    return AinModule.instance;
+  }
+
+  initAin(chainId: 0 | 1) {
+    const blockchainEndpoint = getBlockChainEndpoint(chainId);
+    this.ain = new Ain(blockchainEndpoint, chainId);
+  }
+
+  checkAinInitiated(): boolean {
+    if (!this.ain) 
+      throw new Error('Set initAin(chainId) First.');
+    return true;
+  }
+
+  isDefaultAccountExist(): boolean {
+    if (this.getDefaultAccount())
+      return false;
+    return true;
+  }
+
+  setDefaultAccount(privateKey: string) {
+    this.checkAinInitiated();
+    this.ain!.wallet.addAndSetDefaultAccount(privateKey);
+  }
+
+  getDefaultAccount() {
+    this.checkAinInitiated();
+    return this.ain!.wallet.defaultAccount;
+  }
+
+  async sendTransaction(data: TransactionBody) {
+    this.checkAinInitiated()
+    return await this.ain!.sendTransaction(data);
+  }
+}