Refactor: Implement user removal in Python

core/scripts/hysteria2/remove_user.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+
+import json
+import sys
+import os
+import asyncio
+from init_paths import *
+from paths import *
+
+async def remove_user(username):
+    """
+    Remove a user from the USERS_FILE asynchronously.
+
+    Args:
+        username (str): The username to remove
+
+    Returns:
+        int: 0 on success, 1 on failure
+    """
+    if not os.path.isfile(USERS_FILE):
+        print(f"Error: Config file {USERS_FILE} not found.")
+        return 1
+
+    try:
+        async with asyncio.to_thread(open, USERS_FILE, 'r') as f:
+            try:
+                users_data = json.load(f)
+            except json.JSONDecodeError:
+                print(f"Error: {USERS_FILE} contains invalid JSON.")
+                return 1
+
+        if username in users_data:
+            del users_data[username]
+            async with asyncio.to_thread(open, USERS_FILE, 'w') as f:
+                json.dump(users_data, f, indent=4)
+            print(f"User {username} removed successfully.")
+        else:
+            print(f"Error: User {username} not found.")
+            return 1
+
+    except Exception as e:
+        print(f"Error: {str(e)}")
+        return 1
+
+    return 0
+
+async def main():
+    if len(sys.argv) != 2:
+        print(f"Usage: {sys.argv[0]} <username>")
+        sys.exit(1)
+
+    username = sys.argv[1]
+    exit_code = await remove_user(username)
+    sys.exit(exit_code)
+
+if __name__ == "__main__":
+    asyncio.run(main())