qotnews/apiserver/feeds/substack.py

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import logging
logging.basicConfig(
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
level=logging.DEBUG)
if __name__ == '__main__':
import sys
sys.path.insert(0,'.')
import requests
from datetime import datetime
from misc.time import unix
from utils import clean
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SUBSTACK_REFERER = 'https://substack.com'
SUBSTACK_API_TOP_POSTS = lambda x: "https://substack.com/api/v1/reader/top-posts"
def author_link(author_id, base_url):
return f"{base_url}/people/{author_id}"
def api_comments(post_id, base_url):
return f"{base_url}/api/v1/post/{post_id}/comments?all_comments=true&sort=best_first"
def api_stories(x, base_url):
return f"{base_url}/api/v1/archive?sort=new&search=&offset=0&limit=100"
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def api(route, ref=None, referer=None):
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headers = {'Referer': referer} if referer else None
try:
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r = requests.get(route(ref), headers=headers, timeout=10)
if r.status_code != 200:
raise Exception('Bad response code ' + str(r.status_code))
return r.json()
except KeyboardInterrupt:
raise
except BaseException as e:
logging.error('Problem hitting Substack API: {}, trying again'.format(str(e)))
try:
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r = requests.get(route(ref), headers=headers, timeout=20)
if r.status_code != 200:
raise Exception('Bad response code ' + str(r.status_code))
return r.json()
except KeyboardInterrupt:
raise
except BaseException as e:
logging.error('Problem hitting Substack API: {}'.format(str(e)))
return False
def comment(i):
if 'body' not in i:
return False
c = {}
c['date'] = unix(i.get('date'))
c['author'] = i.get('name', '')
c['score'] = i.get('reactions').get('')
c['text'] = clean(i.get('body', '') or '')
c['comments'] = [comment(j) for j in i['children']]
c['comments'] = list(filter(bool, c['comments']))
return c
class Publication:
def __init__(self, domain):
self.BASE_DOMAIN = domain
def ref_prefix(self, ref):
return f"{self.BASE_DOMAIN}/#id:{ref}"
def strip_ref_prefix(self, ref):
return ref.replace(f"{self.BASE_DOMAIN}/#id:", '')
def feed(self):
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stories = api(lambda x: api_stories(x, self.BASE_DOMAIN), referer=self.BASE_DOMAIN)
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if not stories: return []
stories = list(filter(None, [i if i.get("audience") == "everyone" else None for i in stories]))
return [self.ref_prefix(str(i.get("id"))) for i in stories or []]
def story(self, ref):
ref = self.strip_ref_prefix(ref)
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stories = api(lambda x: api_stories(x, self.BASE_DOMAIN), referer=self.BASE_DOMAIN)
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if not stories: return False
stories = list(filter(None, [i if i.get("audience") == "everyone" else None for i in stories]))
stories = list(filter(None, [i if str(i.get('id')) == ref else None for i in stories]))
if len(stories) == 0:
return False
r = stories[0]
if not r:
return False
s = {}
s['author'] = ''
s['author_link'] = ''
s['date'] = unix(r.get('post_date'))
s['score'] = r.get('reactions').get('')
s['title'] = r.get('title', '')
s['link'] = r.get('canonical_url', '')
s['url'] = r.get('canonical_url', '')
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comments = api(lambda x: api_comments(x, self.BASE_DOMAIN), r.get('id'), referer=self.BASE_DOMAIN)
s['comments'] = [comment(i) for i in comments.get('comments')]
s['comments'] = list(filter(bool, s['comments']))
s['num_comments'] = r.get('comment_count', 0)
authors = list(filter(None, [self._bylines(byline) for byline in r.get('publishedBylines')]))
if len(authors):
s['author'] = authors[0].get('name')
s['author_link'] = authors[0].get('link')
return s
def _bylines(self, b):
if 'id' not in b:
return None
a = {}
a['name'] = b.get('name')
a['link'] = author_link(b.get('id'), self.BASE_DOMAIN)
return a
class Top:
def ref_prefix(self, base_url, ref):
return f"{base_url}/#id:{ref}"
def strip_ref_prefix(self, ref):
if '/#id:' in ref:
base_url, item = ref.split(f"/#id:")
return item
return ref
def feed(self):
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stories = api(SUBSTACK_API_TOP_POSTS, referer=SUBSTACK_REFERER)
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if not stories: return []
stories = list(filter(None, [i if i.get("audience") == "everyone" else None for i in stories]))
stories = [dict(id=i.get('id'), base_url=i.get("pub", { 'base_url': '' }).get("base_url")) for i in stories or []]
return [self.ref_prefix(str(i.get("base_url")), str(i.get("id"))) for i in stories]
def story(self, ref):
ref = self.strip_ref_prefix(ref)
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stories = api(SUBSTACK_API_TOP_POSTS, referer=SUBSTACK_REFERER)
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if not stories: return False
stories = list(filter(None, [i if i.get("audience") == "everyone" else None for i in stories]))
stories = list(filter(None, [i if str(i.get('id')) == ref else None for i in stories]))
if len(stories) == 0:
return False
r = stories[0]
if not r:
return False
s = {}
pub = r.get('pub')
base_url = pub.get('base_url')
s['author'] = pub.get('author_name')
s['author_link'] = author_link(pub.get('author_id'), base_url)
s['date'] = unix(r.get('post_date'))
s['score'] = r.get('score')
s['title'] = r.get('title', '')
s['link'] = r.get('canonical_url', '')
s['url'] = r.get('canonical_url', '')
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comments = api(lambda x: api_comments(x, base_url), r.get('id'), referer=SUBSTACK_REFERER)
s['comments'] = [comment(i) for i in comments.get('comments')]
s['comments'] = list(filter(bool, s['comments']))
s['num_comments'] = r.get('comment_count', 0)
return s
top = Top()
# scratchpad so I can quickly develop the parser
if __name__ == '__main__':
top_posts = top.feed()
print(top.story(top_posts[0]))
webworm = Publication("https://www.webworm.co/")
posts = webworm.feed()
print(webworm.story(posts[0]))