feat: add wrap_wsol_to_sol function with seed account optimization

examples/wsol_wrapper/src/main.rs

@@ -6,7 +6,10 @@ use std::sync::Arc;
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("🔄 WSOL Wrapper Example");
-    println!("This example demonstrates how to wrap SOL to WSOL and unwrap WSOL back to SOL");
+    println!("This example demonstrates:");
+    println!("1. Wrapping SOL to WSOL");
+    println!("2. Partial unwrapping WSOL back to SOL using seed account");
+    println!("3. Closing WSOL account and unwrapping remaining balance");
 
     // Initialize SolanaTrade client
     let solana_trade = create_solana_trade_client().await?;
@@ -24,15 +27,36 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         }
         Err(e) => {
             println!("❌ Failed to wrap SOL to WSOL: {}", e);
+            return Ok(());
         }
     }
 
-    // Wait a moment before unwrapping
-    println!("\n⏳ Waiting 3 seconds before unwrapping...");
+    // Wait a moment before partial unwrapping
+    println!("\n⏳ Waiting 3 seconds before partial unwrapping...");
     tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
 
-    // Example 2: Close WSOL account and unwrap all remaining balance
-    println!("\n🔒 Example 2: Closing WSOL account and unwrapping remaining balance");
+    // Example 2: Unwrap half of the WSOL back to SOL using seed account
+    println!("\n🔄 Example 2: Unwrapping half of WSOL back to SOL using seed account");
+    let unwrap_amount = wrap_amount / 2; // Half of the wrapped amount
+    println!("Unwrapping {} lamports (0.0005 SOL) back to SOL using seed account...", unwrap_amount);
+
+    match solana_trade.wrap_wsol_to_sol(unwrap_amount).await {
+        Ok(signature) => {
+            println!("✅ Successfully unwrapped half of WSOL back to SOL using seed account!");
+            println!("Transaction signature: {}", signature);
+            println!("Explorer: https://solscan.io/tx/{}", signature);
+        }
+        Err(e) => {
+            println!("❌ Failed to unwrap WSOL to SOL: {}", e);
+        }
+    }
+
+    // Wait a moment before final unwrapping
+    println!("\n⏳ Waiting 3 seconds before final unwrapping...");
+    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+
+    // Example 3: Close WSOL account and unwrap all remaining balance
+    println!("\n🔒 Example 3: Closing WSOL account and unwrapping remaining balance");
     println!("Closing WSOL account and unwrapping all remaining balance to SOL...");
 
     match solana_trade.close_wsol().await {
@@ -53,7 +77,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 /// Create and initialize SolanaTrade client
 async fn create_solana_trade_client() -> Result<SolanaTrade, Box<dyn std::error::Error>> {
     println!("🚀 Initializing SolanaTrade client...");
-    let payer = Keypair::from_base58_string("use_your_payer_keypair_here");
+    let payer = Keypair::from_base58_string("R26eUYq691PC7AFh6yNyC285qr5tZfu43SAYhKGNZrpRVmrwDhR254bSS7Z1e87LWCmPNmiPvYkz9kA9hXyQD2m");
     let rpc_url = "https://api.mainnet-beta.solana.com".to_string();
     let commitment = CommitmentConfig::confirmed();
     let swqos_configs: Vec<SwqosConfig> = vec![SwqosConfig::Default(rpc_url.clone())];