prevent unwrap in scan_taddress_txids

lib/src/lightclient.rs

@@ -1477,47 +1477,84 @@ pub fn start_mempool_monitor(lc: Arc<LightClient>) -> Result<(), String> {
             }        
         }
     }
-
-    fn scan_taddress_txids(&self, pool: &ThreadPool, block_times: Arc<RwLock<HashMap<u64, u32>>>, start_height: u64, end_height: u64, no_cert: bool) -> Result<Vec<()>, String> {
-        // Copy over addresses so as to not lock up the wallet, which we'll use inside the callback below. 
-        let addresses =  self.wallet.read().unwrap()
+    fn scan_taddress_txids(
+        &self, 
+        pool: &ThreadPool, 
+        block_times: Arc<RwLock<HashMap<u64, u32>>>, 
+        start_height: u64, 
+        end_height: u64, 
+        no_cert: bool
+    ) -> Result<Vec<()>, String> {
+        let addresses = self.wallet.read()
+            .map_err(|e| format!("Failed to read wallet: {:?}", e))?
             .get_all_taddresses().iter()
-            .map(|a| a.clone())
+            .cloned()
             .collect::<Vec<String>>();
-
-        // Create a channel so the fetch_transparent_txids can send the results back
+    
         let (ctx, crx) = channel();
         let num_addresses = addresses.len();
-
+    
         for address in addresses {
+            let address_clone = address.clone();
             let wallet = self.wallet.clone();
-
             let pool = pool.clone();
             let server_uri = self.get_server_uri();
             let ctx = ctx.clone();
-
             let block_times = block_times.clone();
-
+    
             pool.execute(move || {
-                // Fetch the transparent transactions for this address, and send the results 
-                // via the channel
-                let r = fetch_transparent_txids(&server_uri, address, start_height, end_height,no_cert,
-                move |tx_bytes: &[u8], height: u64| {
-                    let tx = Transaction::read(tx_bytes).unwrap();
-
-                    // Scan this Tx for transparent inputs and outputs
-                    let datetime = block_times.read().unwrap().get(&height).map(|v| *v).unwrap_or(0);
-                    wallet.read().unwrap().scan_full_tx(&tx, height as i32, datetime as u64); 
-                });
-                ctx.send(r).unwrap();
+                println!("Fetching transactions for address: {}", address_clone);
+    
+                let r = fetch_transparent_txids(
+                    &server_uri, 
+                    address, 
+                    start_height, 
+                    end_height, 
+                    no_cert,
+                    move |tx_bytes: &[u8], height: u64| {
+                        let tx_result = Transaction::read(tx_bytes)
+                            .map_err(|e| format!("Failed to read transaction: {:?}", e));
+    
+                        match tx_result {
+                            Ok(tx) => {
+                                let datetime_result = block_times.read()
+                                    .map_err(|e| format!("Failed to read block times: {:?}", e))
+                                    .and_then(|bt| bt.get(&height).cloned().ok_or_else(|| format!("No datetime for height: {}", height)));
+    
+                                match datetime_result {
+                                    Ok(datetime) => {
+                                        match wallet.read().map_err(|e| format!("Failed to read wallet: {:?}", e)) {
+                                            Ok(w) => {
+                                                w.scan_full_tx(&tx, height as i32, datetime as u64);
+                                            },
+                                            Err(e) => {
+                                                println!("Error reading wallet: {}", e);
+                                            },
+                                        }
+                                    },
+                                    Err(e) => {
+                                        println!("Error processing transaction: {}", e);
+                                    },
+                                }
+                            },
+                            Err(e) => {
+                                println!("Error reading transaction: {}", e);
+                            },
+                        }
+                    }
+                );
+    
+                match ctx.send(r) {
+                    Ok(_) => println!("Successfully sent data for address: {}", address_clone),
+                    Err(e) => println!("Failed to send data for address: {}: {:?}", address_clone, e),
+                }
             });
         }
-
-        // Collect all results from the transparent fetches, and make sure everything was OK. 
-        // If it was not, we return an error, which will go back to the retry
-        crx.iter().take(num_addresses).collect::<Result<Vec<()>, String>>()
-    } 
-
+    
+        crx.iter().take(num_addresses).collect()
+    }
+    
+ 
     fn scan_fill_fulltxs(&self, pool: &ThreadPool, decoy_txids: Vec<(TxId, i32)>) -> Result<Vec<()>, String> {
 
         // We need to first copy over the Txids from the wallet struct, because