import sys
import traceback
from libs.config import Config
from utils.server import get_server_modules

Config.load_config("config.toml")

from utils.local import loop, noawait
from aiohttp import web
import utils.local as local
import utils.web


async def index(request: web.Request):
    return await utils.web.api_response(
        1, data={"message": "Isekai toolkit API"}, request=request
    )


@web.middleware
async def error_handler(request, handler):
    try:
        response = await handler(request)
        return response
    except utils.web.ParamInvalidException as ex:
        return await utils.web.api_response(
            -1,
            error={"code": "invalid-params", "message": "Invalid params.", "invalid_params": ex.param_list},
            http_status=400,
            request=request,
        )
    except web.HTTPException as ex:
        return await utils.web.api_response(
            -1,
            error={"code": f"http_{ex.status}", "message": ex.reason},
            http_status=ex.status,
            request=request,
        )
    except Exception as ex:
        error_id = utils.web.generate_uuid()
        err_msg = f"Server error [{error_id}]: {ex}"
        print(err_msg, file=sys.stderr)
        traceback.print_exc()
        print(f"End of error [{error_id}]", file=sys.stderr)

        return await utils.web.api_response(
            -1,
            error={"code": "internal-server-error", "message": err_msg},
            http_status=500,
            request=request,
        )


async def on_shutdown(app: web.Application):
    await noawait.end()
    Config.unload()

if __name__ == "__main__":
    local.debug = Config.get("server.debug", False, bool)

    app = web.Application(
        middlewares=[
            error_handler,
        ]
    )

    import init.server.base_api as _

    # Dynamically import modules
    if Config.get("toolbox_ui.enable"):
        import init.server.toolbox_ui as _

    if Config.get("embedding.enable"):
        import init.server.embedding_search as _

    if Config.get("chatcomplete.enable"):
        import init.server.chat_complete as _

    # Initialize server modules
    server_modules = get_server_modules()

    for server_module in server_modules:
        print("Loading server module: " + server_module["name"])
        server_module["init"](app)

    app.on_shutdown.append(on_shutdown)

    app.router.add_route("*", "/", index)

    server_port = Config.get("port", 8144, int)

    web.run_app(
        app,
        host="0.0.0.0",
        port=server_port,
        loop=loop,
    )