Qwen3-TTS-streaming/start_api.py

#!/usr/bin/env python
"""
Startup script for Qwen3-TTS API and Gradio demo.
Runs both the FastAPI backend and Gradio frontend.
"""

import sys
import subprocess
import time
import webbrowser
from pathlib import Path
import argparse


def main():
    parser = argparse.ArgumentParser(
        description="Start Qwen3-TTS API and optional Gradio demo"
    )
    parser.add_argument(
        "--no-demo",
        action="store_true",
        help="Run only the API server without Gradio demo"
    )
    parser.add_argument(
        "--host",
        default="0.0.0.0",
        help="API host (default: 0.0.0.0)"
    )
    parser.add_argument(
        "--port",
        type=int,
        default=8000,
        help="API port (default: 8000)"
    )
    parser.add_argument(
        "--demo-port",
        type=int,
        default=7860,
        help="Gradio demo port (default: 7860)"
    )
    parser.add_argument(
        "--no-browser",
        action="store_true",
        help="Don't open browser automatically"
    )
    
    args = parser.parse_args()
    
    print("""
╔════════════════════════════════════════════════════════════════╗
║         Qwen3-TTS OpenAI-like API Server                       ║
║  Starting API and Gradio Demo...                               ║
╚════════════════════════════════════════════════════════════════╝
    """)
    
    # Start API server
    print(f"\n📡 Starting API server on http://{args.host}:{args.port}")
    print("   Docs: http://localhost:{}/docs".format(args.port))
    
    api_cmd = [
        sys.executable,
        "-m",
        "uvicorn",
        "api.main:app",
        "--host", args.host,
        "--port", str(args.port),
        "--log-level", "info",
    ]
    
    api_process = subprocess.Popen(api_cmd)
    
    # Give API time to start
    time.sleep(5)
    
    if not args.no_demo:
        # Start Gradio demo in separate process
        print(f"\n🎨 Starting Gradio demo on http://localhost:{args.demo_port}")
        
        demo_cmd = [
            sys.executable,
            "-m",
            "api.gradio_demo",
        ]
        
        # Note: Gradio will bind to 0.0.0.0:7860 by default
        # Modify api/gradio_demo.py if you need to change this
        
        demo_process = subprocess.Popen(demo_cmd)
        
        # Open browser if requested
        if not args.no_browser:
            time.sleep(3)
            try:
                webbrowser.open(f"http://localhost:{args.demo_port}")
            except Exception as e:
                print(f"Could not open browser: {e}")
    
    print("""
╔════════════════════════════════════════════════════════════════╗
║  ✅ Services started successfully!                             ║
║                                                                ║
║  API Server:      http://localhost:{}                      ║
║  API Docs:        http://localhost:{}/docs                 ║
║  Gradio Demo:     http://localhost:{}                      ║
║                                                                ║
║  Press Ctrl+C to stop all services                            ║
╚════════════════════════════════════════════════════════════════╝
    """.format(args.port, args.port, args.demo_port))
    
    try:
        if not args.no_demo:
            # Wait for both processes
            api_process.wait()
            demo_process.wait()
        else:
            # Wait for API process
            api_process.wait()
    except KeyboardInterrupt:
        print("\n\n🛑 Shutting down...")
        api_process.terminate()
        if not args.no_demo:
            demo_process.terminate()
        
        # Wait for graceful shutdown
        try:
            api_process.wait(timeout=5)
        except subprocess.TimeoutExpired:
            api_process.kill()
        
        if not args.no_demo:
            try:
                demo_process.wait(timeout=5)
            except subprocess.TimeoutExpired:
                demo_process.kill()
        
        print("👋 Services stopped.")
        sys.exit(0)


if __name__ == "__main__":
    main()