watchdog_script.py

import subprocess
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
import time
import os

class ChangeHandler(FileSystemEventHandler):
    def __init__(self, command):
        self.command = command
        self.process = None
        self.restart_process()

    def restart_process(self):
        if self.process:
            self.process.terminate()
        print("\nRestarting server...")
        self.process = subprocess.Popen(self.command, shell=True)

    def on_modified(self, event):
        if event.src_path.endswith('.py'):
            print(f"Detected change in {event.src_path}")
            self.restart_process()

if __name__ == "__main__":
    path = os.path.dirname(os.path.abspath(__file__))
    command = "python src/main.py"

    # Optional: Add --init flag on first run
    # command = "python src/main.py --init"

    event_handler = ChangeHandler(command)
    observer = Observer()
    observer.schedule(event_handler, path, recursive=True)
    observer.start()

    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        observer.stop()
    observer.join()