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"""Module to crawl the website 'https://www.csrc.gov.cn' to fetch and process articles."""
import json
import logging
import time
import urllib.request
import uuid
from datetime import datetime, timedelta
from lxml import etree
from controllers.summarizer import summarize
from controllers.utils import (
crawl_by_url,
encode,
fetch_url,
sentiment_computation,
translate,
update_content,
)
def crawl(delta):
"""
Crawls the website http://www.csrc.gov.cn to retrieve articles based on the specified delta.
Args:
delta (int): The number of days in the past from today to retrieve articles.
Returns:
None
Raises:
None
"""
logging.info("csrc.gov.cn")
i = 1
while i > -1:
try:
if i == 1:
category_url = "http://www.csrc.gov.cn/csrc/c100039/common_list.shtml"
else:
category_url = f"http://www.csrc.gov.cn/csrc/c100039/common_list_{i}.shtml"
i = i + 1
logging.info(category_url)
req = urllib.request.urlopen(category_url)
text = req.read()
html_text = text.decode("utf-8")
page = etree.HTML(html_text)
articlelist = page.xpath(
"//div[contains(@class, 'main-right fr common-list')]/ul/li")
for article in articlelist:
if isinstance(article, etree._Element):
subelement = etree.tostring(article).decode()
subpage = etree.HTML(subelement)
date = encode(subpage.xpath("//span[@class='date']"))
parsed_datetime = datetime.strptime(
time.strftime("%Y-%m-%d", time.strptime(date, "%Y-%m-%d")),
"%Y-%m-%d")
if parsed_datetime < (datetime.today() - timedelta(days=delta)):
i = -1
else:
urls = subpage.xpath("//a/@href")
for url in urls:
try:
article = {}
url = "http://www.csrc.gov.cn" + url
article['category'] = "Policy Interpretation"
logging.info(url)
crawl_by_url(url, article)
except Exception as error:
logging.error(error)
except Exception as error:
i = -1
logging.error(error)
i = 1
while i > -1:
category_url = f"http://www.csrc.gov.cn/searchList/a1a078ee0bc54721ab6b148884c784a8?_isAgg=true&_isJson=true&_pageSize=18&_template=index&_rangeTimeGte=&_channelName=&page={i}"
i = i + 1
try:
logging.info(category_url)
content = fetch_url(category_url)
if content is None:
i = -1
else:
reportinfo = json.loads(content)
if len(reportinfo['data']['results']) == 0:
i = -1
logging.info(len(reportinfo['data']['results']))
for article in reportinfo['data']['results']:
parsed_datetime = datetime.strptime(
time.strftime(
"%Y-%m-%d",
time.strptime(article['publishedTimeStr'],
"%Y-%m-%d %H:%M:%S")), "%Y-%m-%d")
if parsed_datetime < (datetime.today() - timedelta(days=delta)):
i = -1
else:
article['category'] = "Financial News"
article['site'] = "Securities Regulatory Commission of China"
article['originSite'] = "证监会"
article['titleCN'] = article['title']
article['title'] = translate(article['titleCN'])
article['author'] = ''
article['contentCN'] = repr(article['content'])[1:-1].strip()
if len(article['contentCN']) < 10:
continue
contenteng = ''
for element in article['contentCN'].split("。"):
contenteng += translate(element) + ' '
article['content'] = repr(contenteng)[1:-1].strip()
article['subtitle'] = summarize(article['content'])
article['publishDate'] = time.strftime(
"%Y-%m-%d",
time.strptime(article['publishedTimeStr'],
"%Y-%m-%d %H:%M:%S"))
article['link'] = article['url']
article['attachment'] = ""
article['sentimentScore'], article[
'sentimentLabel'] = sentiment_computation(article['content'])
article['id'] = uuid.uuid5(
uuid.NAMESPACE_OID,
article['titleCN'] + article['publishDate'])
logging.info(article)
# update_content(article)
except Exception as error:
i = -1
logging.error(error)
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