fix package.json targets

Signed-off-by: microwavedcola1 <microwavedcola@gmail.com>

package.json

@@ -8,7 +8,8 @@
   "scripts": {
     "build": "tsc",
     "clean": "rm -rf dist",
-    "example": "ts-node ts/example.ts",
+    "example0": "ts-node ts/example0.ts",
+    "example1": "ts-node ts/example1.ts",
     "format": "prettier --check .",
     "lint": "eslint . --ext ts --ext tsx --ext js --quiet",
     "type-check": "tsc --pretty --noEmit"

ts/accounts/types/group.ts

@@ -3,6 +3,7 @@ import {
   Transaction,
   TransactionInstruction,
 } from '@solana/web3.js';
+import { assert } from 'console';
 import { MangoClient } from '../../client';
 
 export class Group {
@@ -39,8 +40,8 @@ export async function createGroupIx(
 export async function getGroupForAdmin(
   client: MangoClient,
   adminPk: PublicKey,
-): Promise<Group[]> {
-  return (
+): Promise<Group> {
+  const groups = (
     await client.program.account.group.all([
       {
         memcmp: {
@@ -50,4 +51,8 @@ export async function getGroupForAdmin(
       },
     ])
   ).map((tuple) => Group.from(tuple.publicKey, tuple.account));
+
+  assert(groups.length == 1);
+
+  return groups[0];
 }

ts/client.ts

@@ -1,5 +1,6 @@
 import { Program, Provider } from '@project-serum/anchor';
 import { PublicKey } from '@solana/web3.js';
+import { getGroupForAdmin, Group } from './accounts/types/group';
 import { IDL, MangoV4 } from './mango_v4';
 
 export const MANGO_V4_ID = new PublicKey(
@@ -47,4 +48,10 @@ export class MangoClient {
       devnet,
     );
   }
+
+  public getGroup(adminPk: PublicKey): Promise<Group> {
+    return getGroupForAdmin(this, adminPk);
+  }
+
+  
 }

ts/example1.ts

@@ -0,0 +1,32 @@
+import { Provider, Wallet } from '@project-serum/anchor';
+import { Connection, Keypair, PublicKey } from '@solana/web3.js';
+import fs from 'fs';
+import { MangoClient } from './client';
+
+//
+// An example based on high level api i.e. the client
+//
+async function main() {
+  const options = Provider.defaultOptions();
+  const connection = new Connection(
+    'https://mango.devnet.rpcpool.com',
+    options,
+  );
+
+  const user = Keypair.fromSecretKey(
+    Buffer.from(
+      JSON.parse(fs.readFileSync(process.env.USER_KEYPAIR!, 'utf-8')),
+    ),
+  );
+  const userWallet = new Wallet(user);
+  const userProvider = new Provider(connection, userWallet, options);
+  const client = await MangoClient.connect(userProvider, true);
+  console.log(`User ${userWallet.publicKey.toBase58()}`);
+
+  const group = await client.getGroup(
+    new PublicKey('6ACH752p6FsdLzuociVkmDwc3wJW8pcCoxZKfXJKfKcD'),
+  );
+  console.log(group);
+}
+
+main();