feat(logger): enhance logging format and add panic hook

src-tauri/src/utils/logger.rs

@@ -2,6 +2,7 @@ use chrono;
 use log::{LevelFilter, SetLoggerError};
 use std::fs::{File, OpenOptions};
 use std::io::Write;
+use std::panic;
 
 pub struct FileLogger {
     file: File,
@@ -15,14 +16,18 @@ impl log::Log for FileLogger {
     fn log(&self, record: &log::Record) {
         if self.enabled(record.metadata()) {
             let mut file = self.file.try_clone().expect("Failed to clone file handle");
+            
+            // Format: timestamp [LEVEL] target: message (file:line)
             writeln!(
                 file,
-                "{} - {}: {}",
+                "{} [{:<5}] {}: {} ({}:{})",
                 chrono::Local::now().format("%Y-%m-%d %H:%M:%S"),
                 record.level(),
-                record.args()
+                record.target(),
-            )
+                record.args(),
-            .expect("Failed to write to log file");
+                record.file().unwrap_or("unknown"),
+                record.line().unwrap_or(0)
+            ).expect("Failed to write to log file");
         }
     }
 
@@ -35,13 +40,40 @@ pub fn init_logger(app_data_dir: &std::path::Path) -> Result<(), SetLoggerError>
     let logs_dir = app_data_dir.join("logs");
     std::fs::create_dir_all(&logs_dir).expect("Failed to create logs directory");
 
+    // Use .log extension for standard log files
     let log_path = logs_dir.join("app.log");
     let file = OpenOptions::new()
         .create(true)
-        .append(true)
+        .append(true) // Use append mode instead of write
-        .open(log_path)
+        .open(&log_path)
         .expect("Failed to open log file");
 
+    // Set up panic hook
+    let panic_file = file.try_clone().expect("Failed to clone file handle");
+    panic::set_hook(Box::new(move |panic_info| {
+        let mut file = panic_file.try_clone().expect("Failed to clone file handle");
+        
+        let location = panic_info.location()
+            .map(|loc| format!("{}:{}:{}", loc.file(), loc.line(), loc.column()))
+            .unwrap_or_else(|| "unknown location".to_string());
+
+        let message = match panic_info.payload().downcast_ref::<&str>() {
+            Some(s) => *s,
+            None => match panic_info.payload().downcast_ref::<String>() {
+                Some(s) => s.as_str(),
+                None => "Unknown panic message",
+            },
+        };
+
+        let _ = writeln!(
+            file,
+            "{} [PANIC] rust_panic: {} ({})",
+            chrono::Local::now().format("%Y-%m-%d %H:%M:%S"),
+            message,
+            location
+        );
+    }));
+
     let logger = Box::new(FileLogger { file });
     unsafe { log::set_logger_racy(Box::leak(logger))? };
     log::set_max_level(LevelFilter::Debug);