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Mikubot/plugins/weather.lua
2016-06-22 13:59:06 +02:00

133 lines
4.2 KiB
Lua

do
require("./plugins/time")
local BASE_URL = "https://api.forecast.io/forecast"
local apikey = cred_data.forecastio_apikey
local google_apikey = cred_data.google_apikey
local function get_city_name(lat, lng)
local city = redis:hget('telegram:cache:weather:pretty_names', lat..','..lng)
if city then return city end
local url = 'https://maps.googleapis.com/maps/api/geocode/json?latlng='..lat..','..lng..'&result_type=political&language=de&key='..google_apikey
local res, code = https.request(url)
if code ~= 200 then return 'Unbekannte Stadt' end
local data = json:decode(res).results[1]
local city = data.formatted_address
print('Setting '..lat..','..lng..' in redis hash telegram:cache:weather:pretty_names to "'..city..'"')
redis:hset('telegram:cache:weather:pretty_names', lat..','..lng, city)
return city
end
local function get_weather(lat, lng)
print('Finde Wetter in '..lat..', '..lng)
local text = redis:get('telegram:cache:weather:'..lat..','..lng)
if text then print('...aus dem Cache..') return text end
local url = BASE_URL..'/'..apikey..'/'..lat..','..lng..'?lang=de&units=si&exclude=minutely,hourly,daily,alerts,flags'
local response_body = {}
local request_constructor = {
url = url,
method = "GET",
sink = ltn12.sink.table(response_body)
}
local ok, response_code, response_headers, response_status_line = https.request(request_constructor)
if not ok then return nil end
local data = json:decode(table.concat(response_body))
local ttl = string.sub(response_headers["cache-control"], 9)
local weather = data.currently
local city = get_city_name(lat, lng)
local temperature = round(weather.temperature, 1)
local feelslike = round(weather.apparentTemperature, 1)
local temp = 'Wetter in '..city..':\n'..temperature..' °C'
local conditions = ' | '..weather.summary
if weather.icon == 'clear-day' then
conditions = conditions..' ☀️'
elseif weather.icon == 'clear-night' then
conditions = conditions..' 🌙'
elseif weather.icon == 'rain' then
conditions = conditions..' ☔️'
elseif weather.icon == 'snow' then
conditions = conditions..' ❄️'
elseif weather.icon == 'sleet' then
conditions = conditions..' 🌨'
elseif weather.icon == 'wind' then
conditions = conditions..' 💨'
elseif weather.icon == 'fog' then
conditions = conditions..' 🌫'
elseif weather.icon == 'cloudy' then
conditions = conditions..' ☁️☁️'
elseif weather.icon == 'partly-cloudy-day' then
conditions = conditions..' 🌤'
elseif weather.icon == 'partly-cloudy-night' then
conditions = conditions..' 🌙☁️'
else
conditions = conditions..''
end
local windspeed = ' | 💨 '..round(weather.windSpeed, 1)..' m/s'
local text = temp..conditions..windspeed
if temperature ~= feelslike then
text = text..'\n(gefühlt: '..feelslike..' °C)'
end
cache_data('weather', lat..','..lng, text, tonumber(ttl), 'key')
return text
end
local function run(msg, matches)
local user_id = msg.from.id
if matches[1] ~= '/wetter' and matches[1] ~= '/w' then
city = matches[1]
else
local set_location = get_location(user_id)
if not set_location then
city = 'Berlin, Deutschland'
else
city = set_location
end
end
local lat = redis:hget('telegram:cache:weather:'..string.lower(city), 'lat')
local lng = redis:hget('telegram:cache:weather:'..string.lower(city), 'lng')
if not lat and not lng then
print('Koordinaten nicht eingespeichert, frage Google...')
lat,lng = get_latlong(city)
end
if not lat and not lng then
return 'Den Ort "'..city..'" gibt es nicht!'
end
redis:hset('telegram:cache:weather:'..string.lower(city), 'lat', lat)
redis:hset('telegram:cache:weather:'..string.lower(city), 'lng', lng)
local text = get_weather(lat, lng)
if not text then
text = 'Konnte das Wetter von dieser Stadt nicht bekommen.'
end
return text
end
return {
description = "Wetter für deinen oder einen gewählten Ort",
usage = {
"#wetter: Wetter für deinen Wohnort (!location set [Ort])",
"#wetter (Stadt): Wetter für diese Stadt"
},
patterns = {
"^#wetter$",
"^#wetter (.*)$",
"^#w$",
"^#w (.*)$"
},
run = run
}
end