import argparse
import json

from crawler_hdu.login import IHDU
from crawler_hdu.service import ElectiveService
from utils.util import get_logger

logger = get_logger(__name__)
CONFIG_FILE = 'config.json'
DEV_FILE = 'test.json'


def check_config(file_path):
    """
    检查配置文件，若有问题给出提示，否则返回每种选课的必要数据。
    :param file_path: 配置文件路径
    :return:
    """
    elective = None
    sport = None
    pt = None
    config = None
    try:
        with open(file_path, 'r', encoding="utf-8") as f:
            config = json.load(f)
    except Exception:
        logger.error('没有找到配置文件，或者配置有误，请先配置好再重试。更多可以查看 Json 文件格式。', exc_info=1)
        exit(1)
    common = dict()
    # TODO: 检查每一项，给出提示
    common['username'] = config.get('username')
    common['password'] = config.get('password')
    common['from_email'] = config.get('from_email')
    common['from_email_psw'] = config.get('from_email_psw')
    common['to_email'] = config.get('to_email')
    common['delay'] = config.get('delay')

    courses = config.get('courses')

    elec_cos = courses.get('通识选修课')
    if elec_cos and len(elec_cos):
        elective = dict(common)
        elective.update({'courses': elec_cos})
    else:
        logger.warning('未检测到通识选修课的配置。')

    spt_cos = courses.get('体育课')
    if spt_cos and len(spt_cos):
        sport = dict(common)
        sport.update({'courses': spt_cos})
    else:
        logger.warning('未检测到体育课的配置。')

    pt_cos = courses.get('普通理论课')
    if pt_cos and len(pt_cos):
        pt = dict()
        pt.update({'courses': pt_cos})
    else:
        logger.warning('未检测到普通理论课的配置。')

    if not (elective or sport or pt):
        logger.warning('你未配置任何选课课程，请重新确认配置文件。如果你不需要选课，请忽略本条信息。')

    return common, elective, sport, pt


def parse_args():
    parser = argparse.ArgumentParser(usage='%(prog)s [options]', description='For HDU.', add_help=True)
    parser.add_argument('-f', '--file', dest='file', help='use special config file', metavar='FILE')
    parser.add_argument('-d', '--dev', action='store_true', dest='dev', help='run with dev mood')
    parser.add_argument('--only-login', action='store_true', dest='only_login', help='only login')
    parser.add_argument('--not-choose', action='store_true', dest='not_choose', help='do not choose course')

    args = parser.parse_args()
    return args


def main():
    args = parse_args()
    config_file = CONFIG_FILE
    if args.file:
        config_file = args.file
    elif args.dev:
        config_file = DEV_FILE
        logger.warning('当前使用测试配置！')

    common, elective, sport, pt = check_config(config_file)

    hdu = IHDU(username=common.get('username'), password=common.get('password'))
    hdu.login()

    # 启动选课服务
    if not args.only_login:
        e_s = ElectiveService(hdu.extract(), elective)
        e_s.start()


if __name__ == '__main__':
    main()