From 4a934b7b9e6c6cfeda830cfce09748045e2a8e05 Mon Sep 17 00:00:00 2001
From: Denys S <150304777+dssei@users.noreply.github.com>
Date: Mon, 6 May 2024 10:41:07 -0700
Subject: [PATCH] IBC precompile with default timeout height and timestamp
 (#167)

* - ibc precompile with default timeout height and timestamp

* generate changeset

* update to patch
---
 .changeset/proud-gorillas-call.md   |  5 +++++
 packages/evm/README.md              |  7 ++++---
 packages/evm/src/precompiles/ibc.ts | 30 +++++++++++++++++++++++++++--
 3 files changed, 37 insertions(+), 5 deletions(-)
 create mode 100644 .changeset/proud-gorillas-call.md

diff --git a/.changeset/proud-gorillas-call.md b/.changeset/proud-gorillas-call.md
new file mode 100644
index 00000000..157f592c
--- /dev/null
+++ b/.changeset/proud-gorillas-call.md
@@ -0,0 +1,5 @@
+---
+"@sei-js/evm": patch
+---
+
+IBC precompile transfer with default timeout height/timestamp
diff --git a/packages/evm/README.md b/packages/evm/README.md
index dbe6ef71..caaa781c 100644
--- a/packages/evm/README.md
+++ b/packages/evm/README.md
@@ -230,9 +230,10 @@ The WASM precompile contract facilitates execution, instantiation, and querying
 The IBC precompile contract facilitates messages exchange between Sei and other IBC compatible blockchains.
 #### Functions
 
-| Function Name                                                                  | Input Parameters                                                                                                                                                                                               | Return Value           | Description                                                                                  |
-|--------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------|----------------------------------------------------------------------------------------------|
-| [`transfer`](/sei-js/docs/interfaces/evm.IbcPrecompileFunctions.html#transfer) | `toAddress: ` `string`, `port: ` `string`, `channel: ` `string`, `denom: ` `string`, `amount: ` `ethers.BigNumberish`, `revisionNumber: ` `BigInt`, `revisionHeight: ` `BigInt`, `timeoutTimestamp: ` `BigInt` | `{ success: boolean }` | Transfers tokens from the caller's address to another on a different (IBC compatible) chain. |
+| Function Name                                                          | Input Parameters                                                                                                      | Return Value           | Description                                                                                                                                                      |
+|------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------|------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [`transfer`](/sei-js/docs/interfaces/evm.IbcPrecompileFunctions.html#transfer) | `toAddress: ` `string`, `port: ` `string`, `channel: ` `string`, `denom: ` `string`, `amount: ` `ethers.BigNumberish`, `revisionNumber: ` `BigInt`, `revisionHeight: ` `BigInt`, `timeoutTimestamp: ` `BigInt` | `{ success: boolean }` | Transfers tokens from the caller's address to another on a different (IBC compatible) chain.                                                                     |
+| [`transferWithDefaultTimeout`](/sei-js/docs/interfaces/evm.IbcPrecompileFunctions.html#transferWithDefaultTimeout) | `toAddress: ` `string`, `port: ` `string`, `channel: ` `string`, `denom: ` `string`, `amount: ` `ethers.BigNumberish`| `{ success: boolean }` | Transfers tokens from the caller's address to another on a different (IBC compatible) chain. Calculates default timeout height as opposed to `transfer` function |
 
 #### Precompile Addresses
 0x0000000000000000000000000000000000001009
diff --git a/packages/evm/src/precompiles/ibc.ts b/packages/evm/src/precompiles/ibc.ts
index 9392985e..52b221a3 100644
--- a/packages/evm/src/precompiles/ibc.ts
+++ b/packages/evm/src/precompiles/ibc.ts
@@ -21,6 +21,18 @@ export interface IbcPrecompileFunctions {
 	transfer(toAddress: string, port: string, channel: string, denom: string, amount: ethers.BigNumberish,
 					 revisionNumber: BigInt, revisionHeight: BigInt, timeoutTimestamp: BigInt): Promise<{ success: boolean }>;
 
+  /**
+   * Transfers tokens from the caller's address to another on a different (IBC compatible) chain.
+   * Calculates the timeout height/timestamp based on the current block timestamp.
+   * @param toAddress The recipient's address on the other chain
+   * @param port IBC port in source chain (e.g. 'transfer')
+   * @param channel IBC channel in source chain (e.g. 'channel-0')
+   * @param denom The denomination of the tokens to send
+   * @param amount The amount of tokens to send
+   */
+  transferWithDefaultTimeout(toAddress: string, port: string, channel: string, denom: string,
+                             amount: ethers.BigNumberish): Promise<{ success: boolean }>;
+
 }
 
 /**
@@ -103,9 +115,23 @@ export const IBC_PRECOMPILE_ABI: Abi = [
 		],
 		name: 'transfer',
 		outputs: [{ internalType: 'bool', name: 'success', type: 'bool' }],
-		stateMutability: 'view',
+		stateMutability: 'payable',
 		type: 'function'
-	}
+	},
+  {
+    inputs: [
+      { internalType: 'string', name: 'toAddress', type: 'string' },
+      { internalType: 'string', name: 'port', type: 'string' },
+      { internalType: 'string', name: 'channel', type: 'string' },
+      { internalType: 'string', name: 'denom', type: 'string' },
+      { internalType: 'uint256', name: 'amount', type: 'uint256' },
+    ],
+    name: 'transferWithDefaultTimeout',
+    outputs: [{ internalType: 'bool', name: 'success', type: 'bool' }],
+    stateMutability: 'payable',
+    type: 'function'
+  },
+
 ];
 
 /**