#!/usr/bin/env python
"""
Atomizer Dashboard Launcher
Starts both backend (FastAPI) and frontend (Vite) with a single command.

Usage:
    python launch_dashboard.py

Access dashboard at: http://localhost:3003
"""

import subprocess
import sys
import time
import os
import signal
from pathlib import Path

# Colors for terminal output
class Colors:
    GREEN = '\033[92m'
    BLUE = '\033[94m'
    YELLOW = '\033[93m'
    RED = '\033[91m'
    END = '\033[0m'
    BOLD = '\033[1m'

def print_banner():
    print(f"""
{Colors.BLUE}{Colors.BOLD}============================================
         ATOMIZER DASHBOARD LAUNCHER
============================================{Colors.END}
""")

def main():
    print_banner()

    root_dir = Path(__file__).parent
    backend_dir = root_dir / "atomizer-dashboard" / "backend"
    frontend_dir = root_dir / "atomizer-dashboard" / "frontend"

    # Verify directories exist
    if not backend_dir.exists():
        print(f"{Colors.RED}Error: Backend directory not found at {backend_dir}{Colors.END}")
        sys.exit(1)
    if not frontend_dir.exists():
        print(f"{Colors.RED}Error: Frontend directory not found at {frontend_dir}{Colors.END}")
        sys.exit(1)

    processes = []

    try:
        # Start backend - use conda run to ensure atomizer environment
        print(f"{Colors.YELLOW}Starting backend server (FastAPI on port 8000)...{Colors.END}")
        backend_proc = subprocess.Popen(
            ["conda", "run", "-n", "atomizer", "python", "-m", "uvicorn", "api.main:app", "--port", "8000"],
            cwd=str(backend_dir),
            shell=True,
            creationflags=subprocess.CREATE_NEW_PROCESS_GROUP if sys.platform == "win32" else 0
        )
        processes.append(("Backend", backend_proc))
        time.sleep(2)  # Give backend time to start

        # Start frontend
        print(f"{Colors.YELLOW}Starting frontend server (Vite on port 3003)...{Colors.END}")
        frontend_proc = subprocess.Popen(
            ["npm", "run", "dev"],
            cwd=str(frontend_dir),
            shell=True,
            creationflags=subprocess.CREATE_NEW_PROCESS_GROUP if sys.platform == "win32" else 0
        )
        processes.append(("Frontend", frontend_proc))
        time.sleep(3)  # Give frontend time to start

        print(f"""
{Colors.GREEN}{Colors.BOLD}Dashboard is running!{Colors.END}

{Colors.BLUE}Access at:{Colors.END} http://localhost:3003

{Colors.YELLOW}Press Ctrl+C to stop both servers{Colors.END}
""")

        # Wait for processes
        while True:
            for name, proc in processes:
                if proc.poll() is not None:
                    print(f"{Colors.RED}{name} server stopped unexpectedly{Colors.END}")
            time.sleep(1)

    except KeyboardInterrupt:
        print(f"\n{Colors.YELLOW}Shutting down servers...{Colors.END}")
    finally:
        # Clean up processes
        for name, proc in processes:
            try:
                if sys.platform == "win32":
                    proc.terminate()
                else:
                    os.killpg(os.getpgid(proc.pid), signal.SIGTERM)
                proc.wait(timeout=5)
                print(f"{Colors.GREEN}{name} stopped{Colors.END}")
            except Exception as e:
                print(f"{Colors.RED}Error stopping {name}: {e}{Colors.END}")
                proc.kill()

        print(f"{Colors.GREEN}Dashboard shutdown complete{Colors.END}")

if __name__ == "__main__":
    main()