Remember The Milk umbrella reminder using http://webscript.io

rtm-weather.lua

local lom = require 'lxp.lom'
local xpath = require 'xpath'
local response = http.request {
	-- 2517274 is the WOEID for West Lafayette, IN
	url = 'http://weather.yahooapis.com/forecastrss?w=2517274'
}

local hour = tonumber(os.date('%H'))

if (hour == 4) then -- 11:00pm eastern time
	local forecast = xpath.selectNodes(lom.parse(response.content),
		'//yweather:forecast')[1]
	
	if forecast.attr.code == '0' or -- tornado
		forecast.attr.code == '1' or -- tropical storm
		forecast.attr.code == '2' or -- hurricane
		forecast.attr.code == '3' or -- severe thunderstorms
		forecast.attr.code == '4' or -- thunderstorms
		forecast.attr.code == '5' or -- mixed rain and snow
		forecast.attr.code == '6' or -- mixed rain and sleet
		forecast.attr.code == '7' or -- mixed snow and sleet
		forecast.attr.code == '8' or -- freezing drizzle
		forecast.attr.code == '9' or -- drizzle
		forecast.attr.code == '10' or -- freezing rain
		forecast.attr.code == '11' or -- showers
		forecast.attr.code == '12' or -- showers
		forecast.attr.code == '17' or -- hail
		forecast.attr.code == '18' or -- sleet
		forecast.attr.code == '35' or -- mixed rain and hail
		forecast.attr.code == '37' or -- isolated thunderstorms
		forecast.attr.code == '38' or -- scattered thunderstorms
		forecast.attr.code == '39' or -- scattered thunderstorms
		forecast.attr.code == '40' or -- scattered showers
		forecast.attr.code == '45' or -- thundershowers
		forecast.attr.code == '47' then -- isolated thundershowers
		local body = string.format(
			'The forecast for today calls for %s with a high of %d degrees and a low of %d degrees.',
			forecast.attr.text:lower(), forecast.attr.high, forecast.attr.low)
		
		email.send {
			server = 'yourserver', username = 'yourusername', password = 'yourpassword',
			from = 'youremail',
			to = '[email protected]',
			subject = 'Bring an umbrella ^tomorrow at 9am',
			text = 'Forecast\n' .. body
		}
	
		return 'Forecast for tomorrow calls for precipitation. Message sent.'
	else
		return 'Forecast for tomorrow does not call for precipitation.'
	end
else
	return 'It is not time yet.'
end