HPI/my/vk.py
2019-12-19 20:14:26 +00:00

80 lines
1.7 KiB
Python

from datetime import datetime
import json
from typing import NamedTuple, Iterator, Dict, Union, Sequence, Optional
from mycfg import paths
class Favorite(NamedTuple):
dt: datetime
title: str
url: Optional[str]
text: str
Res = Union[Favorite, Exception]
skip = (
'graffiti',
'poll',
# TODO could be useful..
'note',
'doc',
'audio',
'photo',
'album',
'video',
'page',
)
def parse_fav(j: Dict) -> Favorite:
# TODO copy_history??
url = None
title = '' # TODO ???
atts = j.get('attachments', [])
for a in atts:
if any(k in a for k in skip):
continue
link = a['link']
title = link['title']
url = link['url']
# TODOlink['description'] ?
# TODO would be nice to include user
return Favorite(
dt=datetime.utcfromtimestamp(j['date']),
title=title,
url=url,
text=j['text'],
)
def _iter_favs() -> Iterator[Res]:
jj = json.loads(paths.vk.favs_file.read_text())
for j in jj:
try:
yield parse_fav(j)
except Exception as e:
ex = RuntimeError(f"Error while processing\n{j}")
ex.__cause__ = e
yield ex
def favorites() -> Sequence[Res]:
it = _iter_favs()
# trick to sort errors along with the actual objects
# TODO wonder if there is a shorter way?
# TODO add to the error handling post?
favs = list(it)
prev = datetime.min
keys = []
for i, f in enumerate(favs):
if not isinstance(f, Exception):
prev = f.dt
keys.append((prev, i)) # include index to resolve ties
sorted_items = [p[1] for p in sorted(zip(keys, favs))]
#
return sorted_items