57 lines
1.7 KiB
Lua
57 lines
1.7 KiB
Lua
local weather = {}
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local HTTP = require('socket.http')
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HTTP.TIMEOUT = 2
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local JSON = require('dkjson')
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local utilities = require('otouto.utilities')
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function weather:init(config)
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assert(config.owm_api_key,
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'weather.lua requires an OpenWeatherMap API key from http://openweathermap.org/API.'
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)
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weather.triggers = utilities.triggers(self.info.username, config.cmd_pat):t('weather', true).table
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weather.doc = config.cmd_pat .. [[weather <location>
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Returns the current weather conditions for a given location.]]
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end
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weather.command = 'weather <location>'
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function weather:action(msg, config)
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local input = utilities.input_from_msg(msg)
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if not input then
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utilities.send_reply(self, msg, weather.doc, true)
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return
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end
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local coords = utilities.get_coords(input, config)
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if type(coords) == 'string' then
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utilities.send_reply(self, msg, coords)
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return
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end
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local url = 'http://api.openweathermap.org/data/2.5/weather?APPID=' .. config.owm_api_key .. '&lat=' .. coords.lat .. '&lon=' .. coords.lon
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local jstr, res = HTTP.request(url)
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if res ~= 200 then
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utilities.send_reply(self, msg, config.errors.connection)
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return
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end
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local jdat = JSON.decode(jstr)
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if jdat.cod ~= 200 then
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utilities.send_reply(self, msg, 'Error: City not found.')
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return
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end
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local celsius = string.format('%.2f', jdat.main.temp - 273.15)
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local fahrenheit = string.format('%.2f', celsius * (9/5) + 32)
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local output = '`' .. celsius .. '°C | ' .. fahrenheit .. '°F, ' .. jdat.weather[1].description .. '.`'
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utilities.send_reply(self, msg, output, true)
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end
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return weather
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