# coding=utf-8

import os

import re

from selenium import webdriver

import selenium.webdriver.support.ui as ui

import time

from datetime import datetime

import IniFile

# from threading import Thread

from pyquery import PyQuery as pq

import LogFile

import mongoDB

import urllib

class kr36Spider(object):

    def __init__(self):

        logfile = os.path.join(os.path.dirname(os.getcwd()), time.strftime('%Y-%m-%d') + '.txt')

        self.log = LogFile.LogFile(logfile)

        configfile = os.path.join(os.path.dirname(os.getcwd()), 'setting.conf')

        cf = IniFile.ConfigFile(configfile)

        webSearchUrl_list = cf.GetValue("kr36", "webSearchUrl")

        self.keyword_list = cf.GetValue("section", "information_keywords").split(';')

        self.db = mongoDB.mongoDbBase()

        self.start_urls = []

        for word in self.keyword_list:

            self.start_urls.append(webSearchUrl_list + urllib.quote(word))

        self.driver = webdriver.PhantomJS()

        self.wait = ui.WebDriverWait(self.driver, 2)

        self.driver.maximize_window()

    def scroll_foot(self):

        '''

                滚动条拉到底部

                :return:

                '''

        js = ""

        # 如何利用chrome驱动或phantomjs抓取

        if self.driver.name == "chrome" or self.driver.name == 'phantomjs':

            js = "var q=document.body.scrollTop=10000"

        # 如何利用IE驱动抓取

        elif self.driver.name == 'internet explorer':

            js = "var q=document.documentElement.scrollTop=10000"

        return self.driver.execute_script(js)

    def Comapre_to_days(self,leftdate, rightdate):

        '''

        比较连个字符串日期，左边日期大于右边日期多少天

        :param leftdate: 格式：2017-04-15

        :param rightdate: 格式：2017-04-15

        :return: 天数

        '''

        l_time = time.mktime(time.strptime(leftdate, '%Y-%m-%d'))

        r_time = time.mktime(time.strptime(rightdate, '%Y-%m-%d'))

        result = int(l_time - r_time) / 86400

        return result

    def date_isValid(self, strDateText):

        '''

        判断日期时间字符串是否合法：如果给定时间大于当前时间是合法，或者说当前时间给定的范围内

        :param strDateText: 四种格式 '慧聪网 7小时前'; '新浪游戏 29分钟前' ; '中国行业研究网 2017-6-13'

        :return: True:合法；False:不合法

        '''

        currentDate = time.strftime('%Y-%m-%d')

        datePattern = re.compile(r'\d{4}-\d{1,2}-\d{1,2}')

        strDate = re.findall(datePattern, strDateText)

        if len(strDate) == 1:

            if self.Comapre_to_days(currentDate, strDate[0])< 20:

                return True, currentDate

        return False, ''

    def log_print(self, msg):

        '''

        #         日志函数

        #         :param msg: 日志信息

        #         :return:

        #         '''

        print '%s: %s' % (time.strftime('%Y-%m-%d %H-%M-%S'), msg)

    def scrapy_date(self):

        strsplit = '------------------------------------------------------------------------------------'

        for link in self.start_urls:

            self.driver.get(link)

            time.sleep(1)

            self.scroll_foot()

            selenium_html = self.driver.execute_script("return document.documentElement.outerHTML")

            doc = pq(selenium_html)

            infoList = []

            self.log.WriteLog(strsplit)

            self.log_print(strsplit)

            Elements = doc('li[class="item"]')

            for element in Elements.items():

                strdate = element('span[class="time"]').text().encode('utf8').strip()

                flag, date = self.date_isValid(strdate)

                if flag:

                    title = element('div[class="intro"]').find('h3').find('div').text().encode('utf8').strip().replace(' ','')

                    for keyword in self.keyword_list:

                        if title.find(keyword) > -1:

                            url = 'http://36kr.com' + element.find('a').attr('href')

                            source = element('div[class="am-cf inner_li"]').find(

                                'span[class="company mark h5_mark"]').text().encode('utf8').strip()

                            dictM = {'title': title, 'date': date,

                             'url': url, 'keyword': keyword, 'introduction': title, 'source': source}

                            infoList.append(dictM)

                            # self.log.WriteLog('title:%s' % title)

                            # self.log.WriteLog('url:%s' % url)

                            # self.log.WriteLog('source:%s' % source)

                            # self.log.WriteLog('kword:%s' % keyword)

                            # self.log.WriteLog(strsplit)

                            self.log_print('title:%s' % dictM['title'])

                            self.log_print('url:%s' % dictM['url'])

                            self.log_print('date:%s' % dictM['date'])

                            self.log_print('source:%s' % dictM['source'])

                            self.log_print('kword:%s' % dictM['keyword'])

                            self.log_print(strsplit)

                            break

            if len(infoList)>0:

                self.db.SaveInformations(infoList)

        self.driver.close()

        self.driver.quit()

obj = kr36Spider()

obj.scrapy_date()