# --*-- encoding: UTF-8 --*--

"""
bingloader.py
下載Bing.com首頁圖片
"""

import re
import sys
import os
import requests


# 解析獲取Bing首頁
url = 'http://cn.bing.com/'
PRint("Request Bing.com")
bingweb = requests.get(url=url)
f = open('test.html','w')
f.write(bingweb.text)
f.close()

# 搜索圖片關鍵字
pattern = r'g_img={url:/'(http.*jpg)/',id:/'bgDiv/','
m = re.search(pattern, bingweb.text)
if m:
    picurl = m.group(1)
    print("Picture url:/n{0}".format(picurl))
else:
    print("Not Found picture url.")
    sys.exit(-1)

filename = os.path.basename(picurl)
print('File name:%s' % filename)
if os.path.isfile(filename):
    print("The Picture [%s]' has download." % filename)
    raw_input("Press any key.")
    sys.exit(0)

# 下載圖片數據
print("Download Picture...")
data = requests.get(picurl,stream=True)
with open(filename, 'wb') as picfile:
        for chunk in data.iter_content(chunk_size=1024):
            if chunk: # filter out keep-alive new chunks
                picfile.write(chunk)
                picfile.flush()
        picfile.close()

print("Finished.")