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

205 lines
6.5 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_condition_symbol(weather, n)
if weather.data[n].icon == 'clear-day' then
return '☀️'
elseif weather.data[n].icon == 'clear-night' then
return '🌙'
elseif weather.data[n].icon == 'rain' then
return '☔️'
elseif weather.data[n].icon == 'snow' then
return '❄️'
elseif weather.data[n].icon == 'sleet' then
return '🌨'
elseif weather.data[n].icon == 'wind' then
return '💨'
elseif weather.data[n].icon == 'fog' then
return '🌫'
elseif weather.data[n].icon == 'cloudy' then
return '☁️☁️'
elseif weather.data[n].icon == 'partly-cloudy-day' then
return '🌤'
elseif weather.data[n].icon == 'partly-cloudy-night' then
return '🌙☁️'
else
return ''
end
end
local function get_temp(weather, n, hourly)
if hourly then
local temperature = round(weather.data[n].temperature, 1)
local condition = weather.data[n].summary
return temperature..'°C | '..get_condition_symbol(weather, n)..' '..condition
else
local day = round(weather.data[n].temperatureMax, 1)
local night = round(weather.data[n].temperatureMin, 1)
local condition = weather.data[n].summary
return '☀️ '..day..'°C | 🌙 '..night..'°C | '..get_condition_symbol(weather, n)..' '..condition
end
end
local function get_forecast(lat, lng)
print('Finde Wetter in '..lat..', '..lng)
local text = redis:get('telegram:cache:forecast:'..lat..','..lng)
if text then print('...aus dem Cache..') return text end
local url = BASE_URL..'/'..apikey..'/'..lat..','..lng..'?lang=de&units=si&exclude=currently,minutely,hourly,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.daily
local city = get_city_name(lat, lng)
local header = 'Vorhersage für '..city..':\n'..weather.summary..'\n'
local text = 'Heute: '..get_temp(weather, 1)
local text = text..'\nMorgen: '..get_temp(weather, 2)
for day in pairs(weather.data) do
if day > 2 then
text = text..'\n'..convert_timestamp(weather.data[day].time, '%a, %d.%m')..': '..get_temp(weather, day)
end
end
local text = string.gsub(text, "Mon", "Mo")
local text = string.gsub(text, "Tue", "Di")
local text = string.gsub(text, "Wed", "Mi")
local text = string.gsub(text, "Thu", "Do")
local text = string.gsub(text, "Fri", "Fr")
local text = string.gsub(text, "Sat", "Sa")
local text = string.gsub(text, "Sun", "So")
cache_data('forecast', lat..','..lng, header..text, tonumber(ttl), 'key')
return header..text
end
local function get_forecast_hourly(lat, lng)
print('Finde stündliches Wetter in '..lat..', '..lng)
local text = redis:get('telegram:cache:forecast:'..lat..','..lng..':hourly')
if text then print('...aus dem Cache..') return text end
local url = BASE_URL..'/'..apikey..'/'..lat..','..lng..'?lang=de&units=si&exclude=currently,minutely,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.hourly
local city = get_city_name(lat, lng)
local header = '24-Stunden-Vorhersage für '..city..':\n'..weather.summary
local text = ""
for hour in pairs(weather.data) do
if hour < 26 then
text = text..'\n'..convert_timestamp(weather.data[hour].time, '%H:%M Uhr')..' | '..get_temp(weather, hour, true)
end
end
cache_data('forecast', lat..','..lng..':hourly', header..text, tonumber(ttl), 'key')
return header..text
end
local function run(msg, matches)
local user_id = msg.from.id
local city = get_location(user_id)
if matches[2] then
city = matches[2]
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)
if matches[1] == '#forecasth' or matches[1] == '#fh' then
text = get_forecast_hourly(lat, lng)
else
text = get_forecast(lat, lng)
end
if not text then
text = 'Konnte die Wettervorhersage für diese Stadt nicht bekommen.'
end
return text
end
return {
description = "Wettervorhersage für deinen oder einen gewählten Ort",
usage = {
"#f: Wettervorhersage für deine Stadt (/location set [Ort])",
"#f (Stadt): Wettervorhersage für diese Stadt",
"#fh: 24-Stunden-Wettervorhersage für deine Stadt (/location set [Ort])",
"#fh (Stadt): 24-Stunden-Wettervorhersage für diese Stadt"
},
patterns = {
"^(#f)$",
"^(#f) (.*)$",
"^(#fh)$",
"^(#fh) (.*)$",
"^(#forecast)$",
"^(#forecast) (.*)$",
"^(#forecasth)$",
"^(#forecasth) (.*)$"
},
run = run
}
end