"""
QRZ cog for qrm
---
Copyright (C) 2019 Abigail Gold, 0x5c

This file is part of discord-qrmbot and is released under the terms of the GNU
General Public License, version 2.
"""
from collections import OrderedDict
from datetime import datetime

import discord
import discord.ext.commands as commands

import aiohttp
from bs4 import BeautifulSoup


class QRZCog(commands.Cog):
    def __init__(self, bot: commands.Bot):
        self.bot = bot
        self.gs = bot.get_cog("GlobalSettings")
        try:
            with open('data/qrz_session') as qrz_file:
                self.key = qrz_file.readline().strip()
            qrz_test_session(self.key)
        except FileNotFoundError:
            self.key = qrz_login(self.gs.keys.qrz_user, self.gs.keys.qrz_pass)
            with open('data/qrz_session', 'w') as qrz_file:
                qrz_file.write(self.key)
        except ConnectionError:
            self.key = qrz_login(self.gs.keys.qrz_user, self.gs.keys.qrz_pass)
            with open('data/qrz_session', 'w') as qrz_file:
                qrz_file.write(self.key)

    @commands.command(name="qrz", aliases=["call"])
    async def _qrz_lookup(self, ctx: commands.Context, call: str):
        '''Links to info about a callsign from QRZ.'''
        if self.gs.keys.qrz_user == '' or self.gs.keys.qrz_pass == '':
            await ctx.send(f'http://qrz.com/db/{call}')
            return

        try:
            await qrz_test_session(self.key)
        except ConnectionError:
            self.key = await qrz_login(self.gs.keys.qrz_user, self.gs.keys.qrz_pass)
            with open('data/qrz_session', 'w') as qrz_file:
                qrz_file.write(self.key)

        url = f'http://xmldata.qrz.com/xml/current/?s={self.key};callsign={call}'
        async with aiohttp.ClientSession() as session:
            async with session.get(url) as resp:
                if resp.status != 200:
                    raise ConnectionError(f'Unable to connect to QRZ (HTTP Error {resp.status})')
                resp_xml = await resp.text()

        xml_soup = BeautifulSoup(resp_xml, "xml")
        print(xml_soup)

        resp_data = {tag.name: tag.contents[0] for tag in xml_soup.select('QRZDatabase Callsign *')}
        resp_session = {tag.name: tag.contents[0] for tag in xml_soup.select('QRZDatabase Session *')}
        if 'Error' in resp_session:
            raise ValueError(resp_session['Error'])

        embed = discord.Embed(title=f"QRZ Data for {resp_data['call']}",
                              colour=self.gs.colours.good,
                              url=f'http://www.qrz.com/db/{resp_data["call"]}',
                              timestamp=datetime.utcnow())
        embed.set_footer(text=ctx.author.name,
                         icon_url=str(ctx.author.avatar_url))
        if 'image' in resp_data:
            embed.set_image(url=resp_data['image'])

        data = await qrz_process_info(resp_data)

        for title, val in data.items():
            if val is not None:
                embed.add_field(name=title, value=val, inline=True)
        await ctx.send(embed=embed)


async def qrz_login(user: str, passwd: str):
    url = f'http://xmldata.qrz.com/xml/current/?username={user};password={passwd};agent=qrmbot'
    async with aiohttp.ClientSession() as session:
        async with session.get(url) as resp:
            if resp.status != 200:
                raise ConnectionError(f'Unable to connect to QRZ (HTTP Error {resp.status})')
            resp_xml = await resp.text()

    xml_soup = BeautifulSoup(resp_xml, "xml")
    resp_data = {tag.name: tag.contents[0] for tag in xml_soup.select('QRZDatabase Session *')}
    if 'Error' in resp_data:
        raise ConnectionError(resp_data['Error'])
    if resp_data['SubExp'] == 'non-subscriber':
        raise ConnectionError('Invalid QRZ Subscription')
    return resp_data['Key']


async def qrz_test_session(key: str):
    url = f'http://xmldata.qrz.com/xml/current/?s={key}'
    async with aiohttp.ClientSession() as session:
        async with session.get(url) as resp:
            if resp.status != 200:
                raise ConnectionError(f'Unable to connect to QRZ (HTTP Error {resp.status})')
            resp_xml = await resp.text()

    xml_soup = BeautifulSoup(resp_xml, "xml")
    print(xml_soup)

    resp_session = {tag.name: tag.contents[0] for tag in xml_soup.select('QRZDatabase Session *')}
    if 'Error' in resp_session:
        raise ConnectionError(resp_session['Error'])


async def qrz_process_info(data: dict):
    if 'name' in data:
        if 'fname' in data:
            name = data['fname'] + ' ' + data['name']
        else:
            name = data['name']
    else:
        name = None
    if 'state' in data:
        state = f', {data["state"]}'
    else:
        state = ''
    address = data.get('addr1', '') + '\n' + data.get('addr2', '') + \
        state + ' ' + data.get('zip', '')
    if 'eqsl' in data:
        eqsl = 'Yes' if data['eqsl'] == 1 else 'No'
    else:
        eqsl = 'Unknown'
    if 'mqsl' in data:
        mqsl = 'Yes' if data['mqsl'] == 1 else 'No'
    else:
        mqsl = 'Unknown'
    if 'lotw' in data:
        lotw = 'Yes' if data['lotw'] == 1 else 'No'
    else:
        lotw = 'Unknown'

    return OrderedDict([('Name', name),
                        ('Country', data.get('country', None)),
                        ('Address', address),
                        ('Grid Square', data.get('grid', None)),
                        ('County', data.get('county', None)),
                        ('CQ Zone', data.get('cqzone', None)),
                        ('ITU Zone', data.get('ituzone', None)),
                        ('IOTA Designator', data.get('iota', None)),
                        ('Expires', data.get('expdate', None)),
                        ('Aliases', data.get('aliases', None)),
                        ('Previous Callsign', data.get('p_call', None)),
                        ('License Class', data.get('class', None)),
                        ('eQSL?', eqsl),
                        ('Paper QSL?', mqsl),
                        ('LotW?', lotw),
                        ('QSL Info', data.get('qslmgr', None)),
                        ('CQ Zone', data.get('cqzone', None)),
                        ('ITU Zone', data.get('ituzone', None)),
                        ('IOTA Designator', data.get('iota', None)),
                        ('Born', data.get('born', None)),
                        ])


def setup(bot):
    bot.add_cog(QRZCog(bot))