import sys
import logging
import signal
import threading

from src.service.ModelStore import ModelStore
from src.service.PluginStore import PluginStore
from src.service.TemplateRenderer import TemplateRenderer
from src.service.ExternalStorageServer import ExternalStorageServer
from src.service.WebServer import WebServer
from src.model.enum.HookType import HookType


class Application:

    def __init__(self, application_dir: str):
        self._application_dir = application_dir
        self._stop_event = threading.Event()
        self._model_store = ModelStore(self, self.get_plugins)
        self._template_renderer = TemplateRenderer(kernel=self, model_store=self._model_store, render_hook=self.render_hook)
        self._web_server = WebServer(kernel=self, model_store=self._model_store, template_renderer=self._template_renderer)
        self._external_storage_server = ExternalStorageServer(kernel=self, model_store=self._model_store)

        logging.info("[{}] Starting application v{}...".format(self.get_name(), self.get_version()))
        self._plugin_store = PluginStore(kernel=self, model_store=self._model_store, template_renderer=self._template_renderer, web_server=self._web_server)
        signal.signal(signal.SIGINT, self.signal_handler)

    def start(self) -> None:
        variable = self._model_store.variable().get_one_by_name('start_counter')

        if variable:
            self._model_store.variable().update_by_name(variable.name, variable.as_int() + 1)

        self._external_storage_server.run()
        self._web_server.run()

    def signal_handler(self, signal, frame) -> None:
        logging.info("[{}] Shutting down...".format(self.get_name()))
        self._model_store.database().close()
        self._stop_event.set()
        sys.exit(0)

    def get_application_dir(self) -> str:
        return self._application_dir

    def render_hook(self, hook: HookType) -> str:
        return self._template_renderer.render_hooks(self._plugin_store.map_hooks()[hook])

    def get_plugins(self):
        return self._plugin_store.map_plugins()

    @staticmethod
    def get_name() -> str:
        return 'obscreen-studio'

    @staticmethod
    def get_version() -> str:
        with open("version.txt", 'r') as file:
            return file.read().strip()

    def reload_lang(self, lang: str) -> None:
        self._model_store.lang().set_lang(lang)
        self._model_store.variable().reload()
        self._plugin_store.reload_lang()

    @property
    def external_storage_server(self):
        return self._external_storage_server