From d4f680e60a55bc862019ce5bbba8d52da4d37e3f Mon Sep 17 00:00:00 2001
From: Cong Zhang <cong.zhang@cobo.com>
Date: Mon, 4 Dec 2023 14:27:45 +0800
Subject: [PATCH] add get_max_send_amount

---
 MPCClient.php     | 15 +++++++++++++++
 MPCClientTest.php |  9 +++++++++
 2 files changed, 24 insertions(+)

diff --git a/MPCClient.php b/MPCClient.php
index 0d909df..3dca510 100644
--- a/MPCClient.php
+++ b/MPCClient.php
@@ -680,4 +680,19 @@ function retryDoubleCheck(string $requestId)
 
         return $this->request("POST", "/v1/custody/mpc/retry_double_check/", $params);
     }
+
+    function getMaxSendAmount(string $coin, string $fee_rate, string $to_address, string $from_address = null)
+    {
+        $params = [
+            "coin" => $coin,
+            "fee_rate" => $fee_rate,
+            "to_address" => $to_address
+        ];
+
+        if ($from_address) {
+            $params = array_merge($params, ["from_address" => $from_address]);
+        }
+
+        return $this->request("GET", "/v1/custody/mpc/get_max_send_amount/", $params);
+    }
 }
\ No newline at end of file
diff --git a/MPCClientTest.php b/MPCClientTest.php
index 8ced06d..d4b5da9 100644
--- a/MPCClientTest.php
+++ b/MPCClientTest.php
@@ -175,4 +175,13 @@ public function testListTssNode()
 
         $this->assertTrue($res->success);
     }
+
+    public function testGetMaxSendAmount()
+    {
+        $coin = "GETH";
+        $to_address = "0xEEACb7a5e53600c144C0b9839A834bb4b39E540c";
+        $res = $this->mpcClient->getMaxSendAmount($coin, "0", $to_address);
+
+        $this->assertTrue($res->success);
+    }
 }
\ No newline at end of file