From 108ef86b781041b3b793ceca668aa63f6f8c500b Mon Sep 17 00:00:00 2001
From: Yoojin Ko <db232100@gmail.com>
Date: Mon, 18 Sep 2023 17:19:32 +0900
Subject: [PATCH 1/5] feat: add AinModule

---
 src/ain.ts | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 src/ain.ts

diff --git a/src/ain.ts b/src/ain.ts
new file mode 100644
index 0000000..f084b04
--- /dev/null
+++ b/src/ain.ts
@@ -0,0 +1,37 @@
+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;
+
+  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 {
+    return this.ain ? true : false;
+  }
+
+  setDefaultAddress(privateKey: string) {
+    if(!this.checkAinInitiated())
+      throw new Error('Set initAin(chainId) First.');
+    this.ain!.wallet.addAndSetDefaultAccount(privateKey);
+  }
+
+  async sendTransaction(data: TransactionBody) {
+    if (!this.checkAinInitiated())
+      throw new Error('Set initAin(chainId) First.');
+    return await this.ain!.sendTransaction(data);
+  }
+}
\ No newline at end of file

From 98421036397c552d7bc41351bc61337831b036fa Mon Sep 17 00:00:00 2001
From: Yoojin Ko <db232100@gmail.com>
Date: Mon, 18 Sep 2023 17:33:04 +0900
Subject: [PATCH 2/5] fix: static getInstance

---
 src/ain.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ain.ts b/src/ain.ts
index f084b04..5809f00 100644
--- a/src/ain.ts
+++ b/src/ain.ts
@@ -7,7 +7,7 @@ export default class AinModule {
   private ain?: Ain;
   private static instance: AinModule;
 
-  getInstance() {
+  static getInstance() {
     if (!AinModule.instance) {
       AinModule.instance = new AinModule();
     }

From f062f24c3760aff13b1d4038fb1dcf9529acd5cf Mon Sep 17 00:00:00 2001
From: Yoojin Ko <db232100@gmail.com>
Date: Mon, 18 Sep 2023 17:47:58 +0900
Subject: [PATCH 3/5] feat: add getDefaultAccount

---
 src/ain.ts | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/ain.ts b/src/ain.ts
index 5809f00..fbd930a 100644
--- a/src/ain.ts
+++ b/src/ain.ts
@@ -23,12 +23,19 @@ export default class AinModule {
     return this.ain ? true : false;
   }
 
-  setDefaultAddress(privateKey: string) {
-    if(!this.checkAinInitiated())
+  setDefaultAccount(privateKey: string) {
+    if (!this.checkAinInitiated())
       throw new Error('Set initAin(chainId) First.');
     this.ain!.wallet.addAndSetDefaultAccount(privateKey);
   }
 
+  // FIXME(yoojin): check ain error.
+  getDefaultAccount() {
+    if (!this.checkAinInitiated()) 
+      throw new Error('Set initAin(chainId) First.');
+    return this.ain!.wallet.defaultAccount;
+  }
+
   async sendTransaction(data: TransactionBody) {
     if (!this.checkAinInitiated())
       throw new Error('Set initAin(chainId) First.');

From 3023710537d1e77267d7e28b973e516324e6773e Mon Sep 17 00:00:00 2001
From: Yoojin Ko <db232100@gmail.com>
Date: Mon, 18 Sep 2023 18:02:21 +0900
Subject: [PATCH 4/5] fix: throw error with check

---
 src/ain.ts | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/src/ain.ts b/src/ain.ts
index fbd930a..b4002ef 100644
--- a/src/ain.ts
+++ b/src/ain.ts
@@ -20,25 +20,24 @@ export default class AinModule {
   }
 
   checkAinInitiated(): boolean {
-    return this.ain ? true : false;
+    if (!this.ain) 
+      throw new Error('Set initAin(chainId) First.');
+    return true;
   }
 
   setDefaultAccount(privateKey: string) {
-    if (!this.checkAinInitiated())
-      throw new Error('Set initAin(chainId) First.');
+    this.checkAinInitiated()
     this.ain!.wallet.addAndSetDefaultAccount(privateKey);
   }
 
   // FIXME(yoojin): check ain error.
   getDefaultAccount() {
-    if (!this.checkAinInitiated()) 
-      throw new Error('Set initAin(chainId) First.');
+    this.checkAinInitiated();
     return this.ain!.wallet.defaultAccount;
   }
 
   async sendTransaction(data: TransactionBody) {
-    if (!this.checkAinInitiated())
-      throw new Error('Set initAin(chainId) First.');
+    this.checkAinInitiated()
     return await this.ain!.sendTransaction(data);
   }
 }
\ No newline at end of file

From 597e7b1445f570d4b6fc469867214f176600fa82 Mon Sep 17 00:00:00 2001
From: Yoojin Ko <db232100@gmail.com>
Date: Mon, 18 Sep 2023 18:06:14 +0900
Subject: [PATCH 5/5] feat: add isDefaultAccountExist

---
 src/ain.ts | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/ain.ts b/src/ain.ts
index b4002ef..adb5038 100644
--- a/src/ain.ts
+++ b/src/ain.ts
@@ -25,12 +25,17 @@ export default class AinModule {
     return true;
   }
 
+  isDefaultAccountExist(): boolean {
+    if (this.getDefaultAccount())
+      return false;
+    return true;
+  }
+
   setDefaultAccount(privateKey: string) {
-    this.checkAinInitiated()
+    this.checkAinInitiated();
     this.ain!.wallet.addAndSetDefaultAccount(privateKey);
   }
 
-  // FIXME(yoojin): check ain error.
   getDefaultAccount() {
     this.checkAinInitiated();
     return this.ain!.wallet.defaultAccount;