From 354fd93a75602a9ab486605779d77b03090be45f Mon Sep 17 00:00:00 2001
From: Chris Heaney <chrisheaney30@gmail.com>
Date: Fri, 13 Oct 2023 09:05:12 -0400
Subject: [PATCH] add sdk method

---
 ts/sdk/src/jitProxyClient.ts  | 55 ++++++++++++++++++++++++++
 ts/sdk/src/types/jit_proxy.ts | 72 +++++++++++++++++++++++++++++++++++
 2 files changed, 127 insertions(+)

diff --git a/ts/sdk/src/jitProxyClient.ts b/ts/sdk/src/jitProxyClient.ts
index 4b771259..f70ccad8 100644
--- a/ts/sdk/src/jitProxyClient.ts
+++ b/ts/sdk/src/jitProxyClient.ts
@@ -2,6 +2,7 @@ import {
 	BN,
 	DriftClient,
 	isVariant,
+	MakerInfo,
 	MarketType,
 	PostOnlyParams,
 	QUOTE_SPOT_MARKET_INDEX,
@@ -180,4 +181,58 @@ export class JitProxyClient {
 			.remainingAccounts(remainingAccounts)
 			.instruction();
 	}
+
+	public async arbPerp(
+		params: {
+			makerInfos: MakerInfo[];
+			marketIndex: number;
+		},
+		txParams?: TxParams
+	): Promise<TxSigAndSlot> {
+		const ix = await this.getArbPerpIx(params);
+		const tx = await this.driftClient.buildTransaction([ix], txParams);
+		return await this.driftClient.sendTransaction(tx);
+	}
+
+	public async getArbPerpIx({
+		makerInfos,
+		marketIndex,
+	}: {
+		makerInfos: MakerInfo[];
+		marketIndex: number;
+	}): Promise<TransactionInstruction> {
+		const userAccounts = [this.driftClient.getUserAccount()];
+		for (const makerInfo of makerInfos) {
+			userAccounts.push(makerInfo.makerUserAccount);
+		}
+
+		const remainingAccounts = this.driftClient.getRemainingAccounts({
+			userAccounts,
+			writablePerpMarketIndexes: [marketIndex],
+		});
+
+		for (const makerInfo of makerInfos) {
+			remainingAccounts.push({
+				pubkey: makerInfo.maker,
+				isWritable: true,
+				isSigner: false,
+			});
+			remainingAccounts.push({
+				pubkey: makerInfo.makerStats,
+				isWritable: true,
+				isSigner: false,
+			});
+		}
+
+		return this.program.methods
+			.arbPerp(marketIndex)
+			.accounts({
+				state: await this.driftClient.getStatePublicKey(),
+				user: await this.driftClient.getUserAccountPublicKey(),
+				userStats: this.driftClient.getUserStatsAccountPublicKey(),
+				driftProgram: this.driftClient.program.programId,
+			})
+			.remainingAccounts(remainingAccounts)
+			.instruction();
+	}
 }
diff --git a/ts/sdk/src/types/jit_proxy.ts b/ts/sdk/src/types/jit_proxy.ts
index 0d9cb6f3..d5e8a331 100644
--- a/ts/sdk/src/types/jit_proxy.ts
+++ b/ts/sdk/src/types/jit_proxy.ts
@@ -69,6 +69,42 @@ export type JitProxy = {
 					};
 				}
 			];
+		},
+		{
+			name: 'arbPerp';
+			accounts: [
+				{
+					name: 'state';
+					isMut: false;
+					isSigner: false;
+				},
+				{
+					name: 'user';
+					isMut: true;
+					isSigner: false;
+				},
+				{
+					name: 'userStats';
+					isMut: true;
+					isSigner: false;
+				},
+				{
+					name: 'authority';
+					isMut: false;
+					isSigner: true;
+				},
+				{
+					name: 'driftProgram';
+					isMut: false;
+					isSigner: false;
+				}
+			];
+			args: [
+				{
+					name: 'marketIndex';
+					type: 'u16';
+				}
+			];
 		}
 	];
 	types: [
@@ -302,6 +338,42 @@ export const IDL: JitProxy = {
 				},
 			],
 		},
+		{
+			name: 'arbPerp',
+			accounts: [
+				{
+					name: 'state',
+					isMut: false,
+					isSigner: false,
+				},
+				{
+					name: 'user',
+					isMut: true,
+					isSigner: false,
+				},
+				{
+					name: 'userStats',
+					isMut: true,
+					isSigner: false,
+				},
+				{
+					name: 'authority',
+					isMut: false,
+					isSigner: true,
+				},
+				{
+					name: 'driftProgram',
+					isMut: false,
+					isSigner: false,
+				},
+			],
+			args: [
+				{
+					name: 'marketIndex',
+					type: 'u16',
+				},
+			],
+		},
 	],
 	types: [
 		{