"""HACS http endpoints."""
import os
from integrationhelper import Logger
from homeassistant.components.http import HomeAssistantView
from aiohttp import web
from hacs_frontend import locate_gz, locate_debug_gz

from custom_components.hacs.globals import get_hacs


class HacsFrontend(HomeAssistantView):
    """Base View Class for HACS."""

    requires_auth = False
    name = "hacs_files"
    url = r"/hacsfiles/{requested_file:.+}"

    async def get(self, request, requested_file):  # pylint: disable=unused-argument
        """Handle HACS Web requests."""
        return await get_file_response(requested_file)


class HacsPluginViewLegacy(HacsFrontend):
    """Alias for legacy, remove with 1.0"""

    name = "community_plugin"
    url = r"/community_plugin/{requested_file:.+}"

    async def get(self, request, requested_file):  # pylint: disable=unused-argument
        """DEPRECATED."""
        hacs = get_hacs()
        if hacs.system.ha_version.split(".")[1] >= "107":
            logger = Logger("hacs.deprecated")
            logger.warning(
                "The '/community_plugin/*' is deprecated and will be removed in an upcomming version of HACS, it has been replaced by '/hacsfiles/*', if you use the UI to manage your lovelace configuration, you can update this by going to the settings tab in HACS, if you use YAML to manage your lovelace configuration, you manually need to replace the URL in your resources."
            )

        return await get_file_response(requested_file)


async def get_file_response(requested_file):
    """Get file."""
    hacs = get_hacs()

    if requested_file.startswith("frontend-"):
        if hacs.configuration.debug:
            servefile = await hacs.hass.async_add_executor_job(locate_debug_gz)
            hacs.logger.debug("Serving DEBUG frontend")
        else:
            servefile = await hacs.hass.async_add_executor_job(locate_gz)

        if os.path.exists(servefile):
            return web.FileResponse(servefile)
    elif requested_file == "iconset.js":
        return web.FileResponse(
            f"{hacs.system.config_path}/custom_components/hacs/iconset.js"
        )

    try:
        if requested_file.startswith("themes"):
            file = f"{hacs.system.config_path}/{requested_file}"
        else:
            file = f"{hacs.system.config_path}/www/community/{requested_file}"

        # Serve .gz if it exist
        if os.path.exists(file + ".gz"):
            file += ".gz"

        if os.path.exists(file):
            hacs.logger.debug("Serving {} from {}".format(requested_file, file))
            response = web.FileResponse(file)
            response.headers["Cache-Control"] = "no-store, max-age=0"
            response.headers["Pragma"] = "no-store"
            return response
        else:
            hacs.logger.error(f"Tried to serve up '{file}' but it does not exist")

    except Exception as error:  # pylint: disable=broad-except
        hacs.logger.debug(
            "there was an issue trying to serve {} - {}".format(requested_file, error)
        )

    return web.Response(status=404)