# coding:utf-8

"""命令行火车票查看器
Usage:
	tickets [-gdtkz] <from> <to> <date>
"""

from docopt import docopt
from stations import stations
import requests
from prettytable import PrettyTable
from colorama import init, Fore

init()


class TrainsCollection:
    header = '车次 车站 时间 历时 一等 二等 高级软卧 软卧 硬卧 硬座 无座'.split()

    def __init__(self, available_trains,available_place, options):
        """查询的火车班次集合
        :param available_trains: 一个列表, 包含可获得的火车班次, 每个
                                 火车班次是一个字典
        :param options: 查询的选项, 如高铁, 动车, etc...
        """
        self.available_trains = available_trains
        self.available_place = available_place
        self.options = options

    @property
    def trains(self):
        for raw_train in self.available_trains:
            raw_train_list = raw_train.split('|')
            train_no = raw_train_list[3]
            initial = train_no[0].lower()
            duration = raw_train_list[10]
            if initial in self.options:
                train = [
                    train_no,
                    '\n'.join([Fore.LIGHTGREEN_EX + self.available_place[raw_train_list[6]] + Fore.RESET,
                               Fore.LIGHTRED_EX + self.available_place[raw_train_list[7]] + Fore.RESET]),
                    '\n'.join([Fore.LIGHTGREEN_EX + raw_train_list[8] + Fore.RESET,
                               Fore.LIGHTRED_EX + raw_train_list[9] + Fore.RESET]),
                    duration,
                    raw_train_list[-4] if raw_train_list[-4] else '--',
                    raw_train_list[-5] if raw_train_list[-5] else '--',
                    raw_train_list[-14] if raw_train_list[-14] else '--',
                    raw_train_list[-12] if raw_train_list[-12] else '--',
                    raw_train_list[-7] if raw_train_list[-7] else '--',
                    raw_train_list[-6] if raw_train_list[-6] else '--',
                    raw_train_list[-9] if raw_train_list[-9] else '--',
                ]
                yield train

    def pretty_print(self):
        pt = PrettyTable()
        pt._set_field_names(self.header)
        for train in self.trains:
            pt.add_row(train)
        print(pt)


def cli():
    """command-line interface"""
    arguments = docopt(__doc__)
    from_station = stations.get(arguments['<from>'])
    to_station = stations.get(arguments['<to>'])
    date = arguments['<date>']

    url = 'https://kyfw.12306.cn/otn/leftTicket/query?leftTicketDTO.train_date={}&' \
          'leftTicketDTO.from_station={}&' \
          'leftTicketDTO.to_station={}&' \
          'purpose_codes=ADULT'.format(
        date, from_station, to_station)

    r = requests.get(url)
    available_trains = r.json()['data']['result']
    available_place = r.json()['data']['map']
    options = ''.join([
        key for key, value in arguments.items() if value is True
    ])
    TrainsCollection(available_trains,available_place, options).pretty_print()


if __name__ == '__main__':
    cli()