import subprocess
import sys
import os
import signal

def start_backend():
    env = os.environ.copy()
    # Ensure backend path is on PYTHONPATH
    backend_dir = os.path.join(os.getcwd(), "deepshell-backend")
    env["PYTHONPATH"] = backend_dir + os.pathsep + env.get("PYTHONPATH", "")
    # Respect env vars already set in shell (PROVIDER, GROQ_API_KEY, LLM_MODEL, PORT)
    # Run the deepshell package (__main__.py) which exposes the FastAPI app
    cmd = [sys.executable, "-m", "deepshell"]
    process = subprocess.Popen(cmd, env=env, cwd=backend_dir)
    print(f"DeepShell backend started with PID {process.pid}")
    return process

def main():
    backend_process = start_backend()
    try:
        backend_process.wait()
    except KeyboardInterrupt:
        print("Stopping DeepShell backend...")
        backend_process.send_signal(signal.SIGINT)
        backend_process.wait()

if __name__ == "__main__":
    main()