import os

import sys

import random

import time

import urllib.request

from lxml import html

targetDir=""

links=sys.argv

for link in links:

	time.sleep(1+random.random())

	with urllib.request.urlopen(link) as req:

		if req.getcode()!=200:

			print("error when downloading {0}".format(link),file=sys.stderr)

			continue

		doc_str=req.read().decode("utf8")

	doc=html.fromstring(doc_str)

	license=doc.xpath("//div[@class='photo-license-info']//span/text()")[0].strip()

	imgUrl=doc.xpath("//meta[@property='og:image']/@content")[0]

	filename=imgUrl.split("/")[-1]

	with urllib.request.urlopen(imgUrl) as req:

		if req.getcode()!=200:

			print("error when downloading {0}".format(link),file=sys.stderr)

			continue

		with open(os.path.join(targetDir,filename),mode="wb") as f:

			f.write(req.read())

	print("\t".join(map(str, [link,filename,license])))