From 6a571f189b49f99ed9294cd01c82d56e03ef8bfe Mon Sep 17 00:00:00 2001
From: Tony Lee <tony.lee@mystenlabs.com>
Date: Mon, 4 Nov 2024 16:24:39 -0600
Subject: [PATCH] Get pool DEEP conversion in SDK (#19859)

## Description

Get pool DEEP conversion in SDK

## Test plan

How did you test the new or updated feature?

SDK on mainnet
Sample output: { asset_is_base: false, deep_per_quote:
28.613793980999997 }
This corresponds to the current DEEP price

## Release notes

Check each box that your changes affect. If none of the boxes relate to
your changes, release notes aren't required.

For each box you select, include information after the relevant heading
that describes the impact of your changes that a user might notice and
any actions they must take to implement updates.

- [ ] Protocol:
- [ ] Nodes (Validators and Full nodes):
- [ ] Indexer:
- [ ] JSON-RPC:
- [ ] GraphQL:
- [ ] CLI:
- [ ] Rust SDK:
- [ ] REST API:
---
 .changeset/curvy-walls-pull.md               |  5 +++
 sdk/deepbook-v3/src/client.ts                | 44 ++++++++++++++++++++
 sdk/deepbook-v3/src/transactions/deepbook.ts | 17 ++++++++
 3 files changed, 66 insertions(+)
 create mode 100644 .changeset/curvy-walls-pull.md

diff --git a/.changeset/curvy-walls-pull.md b/.changeset/curvy-walls-pull.md
new file mode 100644
index 0000000000000..c6d887beb1d53
--- /dev/null
+++ b/.changeset/curvy-walls-pull.md
@@ -0,0 +1,5 @@
+---
+'@mysten/deepbook-v3': patch
+---
+
+Deep conversion
diff --git a/sdk/deepbook-v3/src/client.ts b/sdk/deepbook-v3/src/client.ts
index e4e38e8e30e9e..62ff05e77205d 100644
--- a/sdk/deepbook-v3/src/client.ts
+++ b/sdk/deepbook-v3/src/client.ts
@@ -597,4 +597,48 @@ export class DeepBookClient {
 			deep: Number((deepLocked / DEEP_SCALAR).toFixed(9)),
 		};
 	}
+
+	/**
+	 * @description Get the DEEP price conversion for a pool
+	 * @param {string} poolKey Key of the pool
+	 * @returns {Promise<{ asset_is_base: bool, deep_per_quote: number }>} Deep price conversion
+	 */
+	async getPoolDeepPrice(poolKey: string) {
+		const tx = new Transaction();
+		const pool = this.#config.getPool(poolKey);
+		tx.add(this.deepBook.getPoolDeepPrice(poolKey));
+
+		const baseCoin = this.#config.getCoin(pool.baseCoin);
+		const quoteCoin = this.#config.getCoin(pool.quoteCoin);
+		const deepCoin = this.#config.getCoin('DEEP');
+
+		const res = await this.client.devInspectTransactionBlock({
+			sender: normalizeSuiAddress(this.#address),
+			transactionBlock: tx,
+		});
+
+		const OrderDeepPrice = bcs.struct('OrderDeepPrice', {
+			asset_is_base: bcs.bool(),
+			deep_per_asset: bcs.u64(),
+		});
+
+		const poolDeepPriceBytes = res.results![0].returnValues![0][0];
+		const poolDeepPrice = OrderDeepPrice.parse(new Uint8Array(poolDeepPriceBytes));
+
+		if (poolDeepPrice.asset_is_base) {
+			return {
+				asset_is_base: poolDeepPrice.asset_is_base,
+				deep_per_base:
+					((Number(poolDeepPrice.deep_per_asset) / FLOAT_SCALAR) * baseCoin.scalar) /
+					deepCoin.scalar,
+			};
+		} else {
+			return {
+				asset_is_base: poolDeepPrice.asset_is_base,
+				deep_per_quote:
+					((Number(poolDeepPrice.deep_per_asset) / FLOAT_SCALAR) * quoteCoin.scalar) /
+					deepCoin.scalar,
+			};
+		}
+	}
 }
diff --git a/sdk/deepbook-v3/src/transactions/deepbook.ts b/sdk/deepbook-v3/src/transactions/deepbook.ts
index d0f1fec3cd586..ad244b9d98c33 100644
--- a/sdk/deepbook-v3/src/transactions/deepbook.ts
+++ b/sdk/deepbook-v3/src/transactions/deepbook.ts
@@ -667,4 +667,21 @@ export class DeepBookContract {
 			typeArguments: [baseCoin.type, quoteCoin.type],
 		});
 	};
+
+	/**
+	 * @description Get the DEEP price conversion for a pool
+	 * @param {string} poolKey The key to identify the pool
+	 * @returns A function that takes a Transaction object
+	 */
+	getPoolDeepPrice = (poolKey: string) => (tx: Transaction) => {
+		const pool = this.#config.getPool(poolKey);
+		const baseCoin = this.#config.getCoin(pool.baseCoin);
+		const quoteCoin = this.#config.getCoin(pool.quoteCoin);
+
+		tx.moveCall({
+			target: `${this.#config.DEEPBOOK_PACKAGE_ID}::pool::get_order_deep_price`,
+			arguments: [tx.object(pool.address)],
+			typeArguments: [baseCoin.type, quoteCoin.type],
+		});
+	};
 }