whoogle-search/app/utils/bangs.py
Ben Busby 72e5a227c8
Move bangs init to bg thread
Initializing the DDG bangs when running whoogle for the first time
creates an indeterminate amount of delay before the app becomes usable,
which makes usability tests (particularly w/ Docker) unreliable. This
moves the bang json init to a background thread and writes a temporary
empty dict to the bangs json file until the full bangs json can be used.
2022-01-25 12:28:06 -07:00

67 lines
1.9 KiB
Python

import json
import requests
DDG_BANGS = 'https://duckduckgo.com/bang.v255.js'
def gen_bangs_json(bangs_file: str) -> None:
"""Generates a json file from the DDG bangs list
Args:
bangs_file: The str path to the new DDG bangs json file
Returns:
None
"""
try:
# Request full list from DDG
r = requests.get(DDG_BANGS)
r.raise_for_status()
except requests.exceptions.HTTPError as err:
raise SystemExit(err)
# Convert to json
data = json.loads(r.text)
# Set up a json object (with better formatting) for all available bangs
bangs_data = {}
for row in data:
bang_command = '!' + row['t']
bangs_data[bang_command] = {
'url': row['u'].replace('{{{s}}}', '{}'),
'suggestion': bang_command + ' (' + row['s'] + ')'
}
json.dump(bangs_data, open(bangs_file, 'w'))
print('* Finished creating ddg bangs json')
def resolve_bang(query: str, bangs_dict: dict) -> str:
"""Transform's a user's query to a bang search, if an operator is found
Args:
query: The search query
bangs_dict: The dict of available bang operators, with corresponding
format string search URLs
(i.e. "!w": "https://en.wikipedia.org...?search={}")
Returns:
str: A formatted redirect for a bang search, or an empty str if there
wasn't a match or didn't contain a bang operator
"""
# Ensure bang search is case insensitive
query = query.lower()
split_query = query.split(' ')
for operator in bangs_dict.keys():
if operator not in split_query \
and operator[1:] + operator[0] not in split_query:
continue
return bangs_dict[operator]['url'].replace(
'{}',
query.replace(operator if operator in split_query
else operator[1:] + operator[0], '').strip(), 1)
return ''