import asyncio
import os

from server.server import GameServer
from server.config import ServerConfig


async def run_in_memory():
    from server.transport import InMemoryTransport
    cfg = ServerConfig()
    server = GameServer(transport=InMemoryTransport(lambda d, p: server.on_datagram(d, p)), config=cfg)
    await asyncio.gather(server.transport.run(), server.tick_loop())


async def run_quic():
    from server.quic_transport import QuicWebTransportServer
    cfg = ServerConfig()
    host = os.environ.get("QUIC_HOST", "0.0.0.0")
    port = int(os.environ.get("QUIC_PORT", "4433"))
    cert = os.environ["QUIC_CERT"]
    key = os.environ["QUIC_KEY"]
    server = GameServer(transport=QuicWebTransportServer(host, port, cert, key, lambda d, p: server.on_datagram(d, p)), config=cfg)
    await asyncio.gather(server.transport.run(), server.tick_loop())


async def run_webtransport():
    from server.webtransport_server import WebTransportServer
    from server.static_server import start_https_static
    cfg = ServerConfig()
    host = os.environ.get("WT_HOST", os.environ.get("QUIC_HOST", "0.0.0.0"))
    port = int(os.environ.get("WT_PORT", os.environ.get("QUIC_PORT", "4433")))
    cert = os.environ.get("WT_CERT") or os.environ["QUIC_CERT"]
    key = os.environ.get("WT_KEY") or os.environ["QUIC_KEY"]
    # Optional static HTTPS server for client assets
    static = os.environ.get("STATIC", "1")
    static_host = os.environ.get("STATIC_HOST", host)
    static_port = int(os.environ.get("STATIC_PORT", "8443"))
    static_root = os.environ.get("STATIC_ROOT", "client")
    httpd = None
    if static == "1":
        httpd, _t = start_https_static(static_host, static_port, cert, key, static_root)
        print(f"HTTPS static server: https://{static_host}:{static_port}/ serving '{static_root}'")
    server = GameServer(transport=WebTransportServer(host, port, cert, key, lambda d, p: server.on_datagram(d, p)), config=cfg)
    print(f"WebTransport server: https://{host}:{port}/ (HTTP/3)")
    try:
        await asyncio.gather(server.transport.run(), server.tick_loop())
    finally:
        if httpd is not None:
            httpd.shutdown()


if __name__ == "__main__":
    try:
        mode = os.environ.get("MODE", "mem").lower()
        if mode == "wt":
            asyncio.run(run_webtransport())
        elif mode == "quic":
            asyncio.run(run_quic())
        else:
            asyncio.run(run_in_memory())
    except KeyboardInterrupt:
        pass