# !/usr/bin/env python
# coding=utf-8

import re

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

from main.config import *
import pymongo

client = pymongo.MongoClient(MONGO_URL)
db = client[MONGO_DB]
# 浏览器
# browser = webdriver.PhantomJS(service_args=SERVICE_ARGS)
# 设置浏览器大小
# browser.set_window_size(1400, 900)
browser = webdriver.Chrome()
wait = WebDriverWait(browser, 10) # 等待到until返回true

# detail_browser = webdriver.Chrome() # 访问商品详细信息浏览器
def search():
    print("搜索,")
    try:
        # 访问jd
        browser.get("https://www.jd.com")
        # 输入框
        input = wait.until(
            EC.presence_of_element_located((By.CSS_SELECTOR, "#key"))
        )
        # 提交按钮
        submit = wait.until(
            EC.element_to_be_clickable((By.CSS_SELECTOR, "#search > div > div.form > button"))
        )
        # 设置搜索内容
        input.send_keys(KEYWORD)
        # 提交
        submit.click()
        # 获取总页数
        total = wait.until(
            EC.presence_of_element_located((By.CSS_SELECTOR, "#J_bottomPage > span.p-skip > em:nth-child(1) > b"))
        )
        get_products()
        return total.text
    except TimeoutException:
        return search()

def next_page(page_number):
    print("第%d页," % page_number)
    try:
        input = wait.until(
            EC.presence_of_element_located((By.CSS_SELECTOR, "#J_bottomPage > span.p-skip > input"))
        )
        submit = wait.until(
            EC.element_to_be_clickable((By.CSS_SELECTOR, "#J_bottomPage > span.p-skip > a"))
        )
        input.clear()
        input.send_keys(str(page_number))
        submit.click()
        """
        text_to_be_present_in_element
        in the specified element. locator, text
        text_to_be_present_in_element_value
        in the element’s locator, text
        """
        wait.until(
            EC.text_to_be_present_in_element((By.CSS_SELECTOR, "#J_bottomPage > span.p-num > a.curr"), str(page_number))
        )
        get_products()
    except TimeoutException:
        next_page(page_number)

def get_products():
    wait.until(
        EC.presence_of_element_located((By.CSS_SELECTOR, "#J_goodsList .gl-item"))
    )
    html = browser.page_source
    doc = pq(html)
    items = doc("#J_goodsList .gl-item").items()
    for item in items:
        # 商品url
        # url = re.compile('href="(.*?)"').search(item.find(".p-name").html()).group(1)\
        #     .replace(";", "&").replace("https:", "")
        # print(url)
        # get_product(url)
        product = {
            "price" : re.compile(r"(\d+\.\d{2})").search(item.find(".p-price").text()).group(1),
            "detail" : item.find(".p-name").text(),
            "shop" : item.find(".p-shop").text(),
            "commit" : item.find(".p-commit").text()
        }
        save_to_mongo(product)

def save_to_mongo(res):
    try:
        if db[MONGO_TABLE].insert(res):
            print("ok!", res)
    except Exception:
        print("error!", res)
# def get_product(url):
#     try:
#         # 访问jd
#         detail_browser.get("https:" + url)
#         wait.until(
#             EC.presence_of_element_located((By.CSS_SELECTOR, "body > div:nth-child(9) > div"))
#         )
#         html = detail_browser.page_source
#         doc = pq(html)
#         item = doc("body > div:nth-child(9) > div > div.itemInfo-wrap")
#         product = {
#             "title" : item.find(".sku-name").text(),
#             "price" : item.find(".price").text(),
#             "shop" : item.find("#summary-service .hl_red").text(),
#             "location" : item.find("#summary-service").text()
#         }
#         print(product)
#         return product
#     except TimeoutException:
#         return get_product()

def main():
    try:
        total = int(search())
        print(total)
        for i in range(2, total+1):
            next_page(i)
    except Exception:
        print("error,")
    finally:
        browser.close()

if __name__ == "__main__":
    main()

MONGO_URL = 'localhost'
MONGO_DB = 'jd'
MONGO_TABLE = 'product'

# 不加载图片;缓存
# SERVICE_ARGS = ['--load-images=false', '--disk-cache=true']

KEYWORD = '电视'