#!/usr/bin/env python
# -*- encoding: utf-8 -*-
'''
@Contact :   liuyuqi.gov@msn.cn
@Time    :   2022/05/31 01:04:55
@License :   Copyright © 2017-2022 liuyuqi. All Rights Reserved.
@Desc    :   cuit.edu.cn 自动选课
'''
import platform
from auto_cuit.libs.json_conf import JsonConf
from auto_cuit import api
import requests
import os
import sys
import re
import json
import time
import random


class Cuit(object):

    def __init__(self, configPath="conf/config.josn"):
        self.sess = requests.session()
        self.conf = JsonConf(configPath)
        self.sess.cookies = self.conf.data['cookies']
        self.sess.headers = {
            "X-Requested-With": "XMLHttpRequest",
            "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.0 Safari/537.36 Edg/84.0.521.0"
        }

    def run(self):
        profiledId = self.conf.data['profiled_id']
        courseName = self.conf.data['course_name']

        # 验证码
        cnt = 0
        while True:
            pic = self.getCaptcha()
            ocrResult = self.postOCRPic(pic)
            print('OCR: ' + ocrResult['result'])

            checkResult = self.checkCaptcha(ocrResult['result'], profiledId)
            if checkResult:
                break
            cnt += 1
            time.sleep(0.5)
            if cnt % 5 == 0:
                print('验证码错误次数过多, 等待5秒')
                time.sleep(5)

        print('验证码检测通过,等待1秒')
        time.sleep(1)
        # 检测开放状态
        print('获取lessonId')
        lessonId = self.courseName2Id(profiledId, courseName)
        if lessonId == None:
            print('没有找到相关课程:' + courseName)
            exit(1)

        print('检测选课开放状态')
        cnt = 0
        while True:
            if self.isAvailable(ocrResult['result'], profiledId):
                break
                pass
            cnt += 1
            print('没有到选课时间,等待5秒 - ' + str(cnt))
            time.sleep(5)

        # 抢课
        print('开始抢课')

        i = 0
        while True:
            i += 1
            print(i)
            if self.fuckCourse(str(profiledId), str(lessonId)):
                break
            time.sleep(0.5)
            if i >= 20:
                i = 0
                if platform.system().lower() == 'linux':
                    os.system("clear")
                elif platform.system().lower() == 'windows':
                    os.system("cls")
                pass
            pass
        pass

    def fuckCourse(self, profiledId, lessonId):
        try:
            body = {
                "optype": "true",
                "operator0": lessonId + ":true:0",
                "lesson0": lessonId,
                "schLessonGroup_" + lessonId: "undefined"
            }
            req = requests.post(api.chooseCourse % profiledId,
                                data=body, timeout=5, allow_redirects=False)
            req.encoding = 'utf-8'

            html = req.text
            ret = re.search(r"margin:auto;\">\n\t\t\t\t(.*)<\/br>", html)
            if ret == None:
                print("cookie过期")
                exit(-1)
                pass
            print(ret.group(1))
            req.close()
            if '成功' in ret.group(1):
                print('get')
                return True
        except Exception as err:
            print("出错")
            print(err)
            return False
        pass
    pass

    def getCaptcha(self):
        try:
            picReq = self.sess.get(url=api.getCaptcha, timeout=5)
        except Exception as err:
            print(err)
        return picReq.content

    def postOCRPic(self, pic):
        url = self.ocrServer
        files = {'captcha': pic}
        data = {
            'enctype': 'multipart/form-data',
            'name': 'captcha'
        }
        ocrReq = requests.post(url=url, data=data, files=files)
        return json.loads(ocrReq.content)

    def checkCaptcha(self, captcha, profiledId):

        data = {
            'captcha_response': captcha,
            'electionProfile.id': profiledId
        }
        try:
            checkReq = requests.post(
                url=api.checkCode, data=data, allow_redirects=False, timeout=5)
        except Exception as err:
            logger.error(err)

        # print(checkReq.text)
        # 未登录与验证码错误都是302,但Location去向不同
        if checkReq.status_code == 200:
            return True
        elif 'sso' in checkReq.headers['Location']:
            # 转到统一登录中心
            print('cookie失效！！！')
            exit(1)
        return False

    def isAvailable(self, captcha, profiledId):
        '''
        检测登录状态
        '''
        data = {
            'captcha_response': captcha,
            'electionProfile.id': profiledId
        }
        try:
            checkReq = self.sess.post(
                url=api.checkCode, data=data, allow_redirects=False, timeout=5)
            # 未登录与验证码错误都是302,但Location去向不同
            if checkReq.status_code == 200:
                return '不在选课时间内' not in checkReq.text
            elif 'sso' in checkReq.headers['Location']:
                # 转到统一登录中心
                print('cookie失效')
                False
        except Exception as err:
            logger.error(err)
            return False

        return False

    def courseName2Id(self, profileId, courseName):
        try:
            courseListReq = self.sess.get(
                url=api.getCourseList % str(profileId), allow_redirects=False, timeout=5)
        except Exception as err:
            print(err)
        courseList = courseListReq.text
        jsData = execjs.compile(courseList)
        lessonJSONs = jsData.eval('lessonJSONs')
        # print(lessonJSONs)
        for lesson in lessonJSONs:
            if courseName in lesson['name']:
                return lesson['id']
        return None