from flask import Response, request
from io import BytesIO
import xml.etree.ElementTree

from fHDHR.tools import sub_el


class RMG_Devices_Discover():
    endpoints = ["/rmg/devices/discover"]
    endpoint_name = "rmg_devices_discover"
    endpoint_methods = ["GET", "POST"]

    def __init__(self, fhdhr):
        self.fhdhr = fhdhr

    def __call__(self, *args):
        return self.get(*args)

    def get(self, *args):
        """This endpoint requests the grabber attempt to discover any devices it can, and it returns zero or more devices."""

        base_url = request.url_root[:-1]

        out = xml.etree.ElementTree.Element('MediaContainer')
        out.set('size', str(len(list(self.fhdhr.origins.origins_dict.keys()))))

        for origin in list(self.fhdhr.origins.origins_dict.keys()):

            if self.fhdhr.origins.origins_dict[origin].setup_success:
                alive_status = "alive"
            else:
                alive_status = "dead"

            sub_el(out, 'Device',
                   key="%s%s" % (self.fhdhr.config.dict["main"]["uuid"], origin),
                   make=self.fhdhr.config.dict["rmg"]["reporting_manufacturer"],
                   model=self.fhdhr.config.dict["rmg"]["reporting_model"],
                   modelNumber=self.fhdhr.config.internal["versions"]["fHDHR"],
                   protocol="livetv",
                   status=alive_status,
                   title="%s %s" % (self.fhdhr.config.dict["fhdhr"]["friendlyname"], origin),
                   tuners=str(self.fhdhr.origins.origins_dict[origin].tuners),
                   uri="%s/rmg/%s%s" % (base_url, self.fhdhr.config.dict["main"]["uuid"], origin),
                   uuid="device://tv.plex.grabbers.fHDHR/%s%s" % (self.fhdhr.config.dict["main"]["uuid"], origin),
                   thumb="favicon.ico",
                   interface='network'
                   # TODO add preferences
                   )

        fakefile = BytesIO()
        fakefile.write(b'<?xml version="1.0" encoding="UTF-8"?>\n')
        fakefile.write(xml.etree.ElementTree.tostring(out, encoding='UTF-8'))
        device_xml = fakefile.getvalue()

        return Response(status=200,
                        response=device_xml,
                        mimetype='application/xml')