#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from twitch import TwitchClient 

import json
import cherrypy
from cherrypy.process.plugins import Daemonizer

ver = '1.03'


repl = {'"':'&quot;', '&':'&amp;', '<':'&lt;', '>':'&gt;' } 

class FleastServer(object):
    def __init__(self):
        try:
            with open('.token', 'r') as reader:
                self.twitch_token = reader.read().strip()
            with open('./web/fl.html', 'r') as reader:
                self.index_page = reader.read()
            with open('./web/fl_template_main.html', 'r') as reader:
                self.templ_main = reader.read()
            with open('./web/fl_template_stream.html', 'r') as reader:
                self.templ_stream = reader.read()
            with open('./web/fl_template_lang.html', 'r') as reader:
                self.templ_lang = reader.read().splitlines()
            self.client = TwitchClient(self.twitch_token, freq = 1)
        except:
            print("Cannot read token for twitch app or templates, abort.")
            exit(1)

    def set_templ_lang(self, lang):
        templ = ''
        end = False
        for l in self.templ_lang:
            if not end and 'option value="{}"'.format(lang) in l:
                templ += l.format('selected') + '\n'
                end = True
                continue
            templ += l.format(' ') + '\n'
        return templ.rstrip()

    def to_html(self, text):
        #return ''.join(repl.get(s,s) for s in text)
        for i in repl:
            text = text.replace(i, repl[i])
        return text


    @cherrypy.expose
    def index(self, game=None, lang=None):
        return self.fleast(game, lang)

    @cherrypy.expose
    def fleast(self, game=None, lang=None):
        if game is None or game == '':
            return self.index_page.format(_version_ = ver, _opt_langs_ = self.set_templ_lang('ru'))

        game = game.rstrip()
        cherrypy.log('Getting game:"%s" language:%s' % (game, lang))
        data = self.client.get_live_streams(game, lang)

        if data is None:
            return 'Internal Error<br>Tell me more at <a href="https://twitter.com/alexvanin">https://twitter.com/alexvanin</a>' 

        if data['_total'] == 0: 
            return self.templ_main.format( _stream_num_ = data['_total'], _game_name_ = game, \
                            _opt_langs_ = self.set_templ_lang(lang), _stream_list_ = '', \
                            _version_ = ver)
    
        cherrypy.log('Found %d streams' % data['_total'])

        streams = sorted(data['streams'], key=lambda k: k['viewers'])
        result_str = ''
        for s in streams:
            result_str += self.templ_stream.format(s['channel']['url'], s['preview']['medium'], self.to_html(s['channel']['status']), \
                                s['channel']['display_name'], s['viewers']) +'\n'

        return self.templ_main.format(_stream_num_ = data['_total'], _game_name_ = game, \
                        _opt_langs_ = self.set_templ_lang(lang), _stream_list_ = result_str,\
                        _version_ = ver)
 

def main():
    server = FleastServer()
    d = Daemonizer(cherrypy.engine).subscribe()
    cherrypy.quickstart(server, '/', './server.conf')


if __name__ == '__main__':
    main()