[wifi] fix big bugs

wifi_manager.py

@@ -68,9 +68,9 @@ def edit_line_in_file(file_path, search_string, replacement_string):
                 if search_string in line:
                     file.write(replacement_string + '\n')
                     edit = True
+                    logging.info(f"{datetime.datetime.now()}: The line has been edited. \noriginal line: {line}, \nnew line: {replacement_string}")
                 else:
                     file.write(line)
-        logging.info(f"{datetime.datetime.now()}: The line has been edited.")
         return edit
     except FileNotFoundError:
         logging.info(f"The file {file_path} does not exist.")
@@ -104,6 +104,8 @@ def close_app():
     # 保存Wi-Fi IP地址
     save_local_ip()
     
+    logging.info(f"{datetime.datetime.now()}: Exit Wi-Fi hotspot...")
+    
     # 获取当前Flask应用程序的进程ID
     flask_pid = os.getpid()