h/plugins/weather.py

117 lines
3.8 KiB
Python

"weather, thanks to wunderground"
from util import hook, http
@hook.api_key('wunderground')
@hook.command(autohelp=False)
def weather(inp, chan='', nick='', reply=None, db=None, api_key=None):
".weather <location> [dontsave] -- gets weather data from Wunderground "\
"http://wunderground.com/weather/api"
if not api_key:
return None
# this database is used by other plugins interested in user's locations,
# like .near in tag.py
db.execute(
"create table if not exists location(chan, nick, loc, lat, lon, primary key(chan, nick))")
loc = inp
dontsave = loc.endswith(" dontsave")
if dontsave:
loc = loc[:-9].strip().lower()
if not loc: # blank line
loc = db.execute(
"select loc from location where chan=? and nick=lower(?)",
(chan, nick)).fetchone()
if not loc:
try:
# grab from old-style weather database
loc = db.execute("select loc from weather where nick=lower(?)",
(nick,)).fetchone()
except db.OperationalError:
pass # no such table
if not loc:
return weather.__doc__
loc = loc[0]
loc, _, state = loc.partition(', ')
# Check to see if a lat, long pair is being passed. This could be done more
# completely with regex, and converting from DMS to decimal degrees. This
# is nice and simple, however.
try:
float(loc)
float(state)
loc = loc + ',' + state
state = ''
except ValueError:
if state:
state = http.quote_plus(state)
state += '/'
loc = http.quote_plus(loc)
url = 'http://api.wunderground.com/api/'
query = '{key}/geolookup/conditions/forecast/q/{state}{loc}.json' \
.format(key=api_key, state=state, loc=loc)
url += query
try:
parsed_json = http.get_json(url)
except IOError:
return 'Could not get data from Wunderground'
info = {}
if 'current_observation' not in parsed_json:
resp = 'Could not find weather for {inp}. '.format(inp=inp)
# In the case of no observation, but results, print some possible
# location matches
if 'results' in parsed_json['response']:
resp += 'Possible matches include: '
results = parsed_json['response']['results']
for place in results[:6]:
resp += '{city} '.format(**place)
if place['state']:
resp += '{state} '.format(**place)
if place['country_name']:
resp += '{country_name}, '.format(**place)
resp = resp[:-2]
reply(resp)
return
obs = parsed_json['current_observation']
sf = parsed_json['forecast']['simpleforecast']['forecastday'][0]
info['city'] = obs['display_location']['full']
info['t_f'] = obs['temp_f']
info['t_c'] = obs['temp_c']
info['weather'] = obs['weather']
info['h_f'] = sf['high']['fahrenheit']
info['h_c'] = sf['high']['celsius']
info['l_f'] = sf['low']['fahrenheit']
info['l_c'] = sf['low']['celsius']
info['humid'] = obs['relative_humidity']
info['wind'] = 'Wind: {mph}mph/{kph}kph' \
.format(mph=obs['wind_mph'], kph=obs['wind_kph'])
reply('{city}: {weather}, {t_f}F/{t_c}C'
'(H:{h_f}F/{h_c}C L:{l_f}F/{l_c}C)'
', Humidity: {humid}, {wind}'.format(**info))
lat = float(obs['display_location']['latitude'])
lon = float(obs['display_location']['longitude'])
if inp and not dontsave:
db.execute("insert or replace into location(chan, nick, loc, lat, lon) "
"values (?, ?, ?, ?,?)", (chan, nick.lower(), inp, lat, lon))
db.commit()