from selenium import webdriver

from selenium.common.exceptions import TimeoutException

from selenium.webdriver.common.by import By

from selenium.webdriver.support.ui import WebDriverWait

from selenium.webdriver.support import expected_conditions as EC

from pyquery import PyQuery as pq

import re

import json

from config import *

import pymongo

client = pymongo.MongoClient(MONGO_URL)

db = client[MONGO_DB]

browser = webdriver.Firefox()

wait = WebDriverWait(browser,10)

def search():

    try:

        browser.get('https://www.taobao.com')

        input = wait.until(

            EC.presence_of_element_located((By.CSS_SELECTOR, '#q'))

        )

        submit = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR,'#J_TSearchForm > div.search-button > button')))

        input.send_keys('美食')

        submit.click()

        total = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR,'#mainsrp-pager > div > div > div > div.total')))

        get_products()

        return total.text

    except TimeoutException:

        return search()

def next_page(page_number):

    try:

        input = wait.until(

                EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > div.form > input'))

            )

        submit = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR,'#mainsrp-pager > div > div > div > div.form > span.btn.J_Submit')))

        input.clear()

        input.send_keys(page_number)

        submit.click()

        wait.until(EC.text_to_be_present_in_element((By.CSS_SELECTOR,'#mainsrp-pager > div > div > div > ul > li.item.active > span'),str(page_number)))

        get_products()

    except TimeoutException:

        return next_page(page_number)

# def write_to_file(content):

#     with open('E:/python/Projects/test1/result.txt','a',encoding='utf-8') as f:

#         f.write(json.dumps(content,ensure_ascii=False) + '\n')

#         f.close()

def get_products():

    wait.until(EC.presence_of_element_located((By.CSS_SELECTOR,'#mainsrp-itemlist .items .item')))

    html = browser.page_source

    doc = pq(html)

    items = doc('#mainsrp-itemlist .items .item').items()

    for item in items:

        product = {

            'image': item.find('.pic .img').attr('src'),

            'price': item.find('.price').text(),

            'deal': item.find('.deal-cnt').text()[:-3],

            'title': item.find('.title').text(),

            'shop': item.find('.shop').text(),

            'location': item.find('.location').text()

        }

        print(product)

        save_to_mongo(product )

        # write_to_file(product)

def save_to_mongo(result):

    try:

        if db[MONGO_TABLE].insert(result):

            print('存储到MONGODB成功',result)

    except Exception:

        print('存储到MONGODB失败',result)

def main():

    total= search()

    total = int(re.compile('(\d+)').search(total).group(1))

    for i in range(2,total+1):

        next_page(i)

    browser.close()

if __name__ == '__main__':

    main()