Refactor: Chia nho file main thao thu muc va don dep theo yeu cau

utils/network.py

@@ -0,0 +1,27 @@
+import socket
+
+def _resolve_hostname(ip):
+    """Reverse DNS lookup for a single IP."""
+    try:
+        return socket.gethostbyaddr(ip)[0]
+    except Exception:
+        return ""
+
+def get_local_ip():
+    """Get the local IP address of this machine."""
+    try:
+        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        s.connect(("8.8.8.8", 80))
+        ip = s.getsockname()[0]
+        s.close()
+        return ip
+    except Exception:
+        return "N/A"
+
+def get_default_network(ip):
+    """Guess the /24 network from local IP."""
+    try:
+        parts = ip.split(".")
+        return f"{parts[0]}.{parts[1]}.{parts[2]}.0/24"
+    except Exception:
+        return "192.168.1.0/24"

utils/system.py

@@ -0,0 +1,36 @@
+import os
+import sys
+import platform
+import socket
+from utils.network import get_local_ip
+
+def resource_path(relative_path):
+    """ Get absolute path to resource, works for dev and for PyInstaller """
+    try:
+        base_path = sys._MEIPASS
+    except Exception:
+        base_path = os.path.abspath(".")
+    return os.path.join(base_path, relative_path)
+
+def get_machine_info():
+    """Collect machine info."""
+    hostname = socket.gethostname()
+    local_ip = get_local_ip()
+    os_info = f"{platform.system()} {platform.release()}"
+    mac_addr = "N/A"
+
+    try:
+        import uuid
+        mac = uuid.getnode()
+        mac_addr = ":".join(
+            f"{(mac >> (8 * i)) & 0xFF:02X}" for i in reversed(range(6))
+        )
+    except Exception:
+        pass
+
+    return {
+        "hostname": hostname,
+        "ip": local_ip,
+        "os": os_info,
+        "mac": mac_addr,
+    }