import pytest
import subprocess
import time
import requests
import os
import signal
import sys

# Define URLs
BACKEND_URL = "http://localhost:8000"
FRONTEND_URL = "http://localhost:5173"

@pytest.fixture(scope="session")
def app_process():
    """
    Starts the application using start_app.sh and stops it after tests.
    """
    print("\n[Fixture] Starting application...")
    project_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
    start_script = os.path.join(project_root, "start_app.sh")
    stop_script = os.path.join(project_root, "stop_app.sh")

    # Start the app
    subprocess.run([start_script], cwd=project_root, check=True)

    # Wait for Backend and Frontend to be ready
    if not wait_for_service(BACKEND_URL, timeout=30):
        pytest.fail("Backend failed to start.")
    if not wait_for_service(FRONTEND_URL, timeout=30):
        pytest.fail("Frontend failed to start.")

    yield

    # Stop the app
    print("\n[Fixture] Stopping application...")
    subprocess.run([stop_script], cwd=project_root, check=True)

def wait_for_service(url, timeout=30):
    """Polls a service URL until it returns 200 or timeout expires."""
    start_time = time.time()
    while time.time() - start_time < timeout:
        try:
            response = requests.get(url)
            if response.status_code == 200:
                print(f"Service {url} is ready.")
                return True
        except requests.ConnectionError:
            pass
        time.sleep(1)
    print(f"Service {url} timed out.")
    return False