require 'date' require 'cgi' module Agents class WeatherAgent < Agent cannot_receive_events! description <<-MD The WeatherAgent creates an event for the day's weather at a given `location`. You also must select `which_day` you would like to get the weather for where the number 0 is for today and 1 is for tomorrow and so on. Weather is only returned for 1 week at a time. The weather can be provided by either Wunderground or ForecastIO. To choose which `service` to use, enter either `forecastio` or `wunderground`. The `location` can be a US zipcode, or any location that Wunderground supports. To find one, search [wunderground.com](http://wunderground.com) and copy the location part of the URL. For example, a result for San Francisco gives `http://www.wunderground.com/US/CA/San_Francisco.html` and London, England gives `http://www.wunderground.com/q/zmw:00000.1.03772`. The locations in each are `US/CA/San_Francisco` and `zmw:00000.1.03772`, respectively. If you plan on using ForecastIO, the `location` must be a set of GPS coordinates. You must setup an [API key for Wunderground](http://www.wunderground.com/weather/api/) in order to use this Agent with Wunderground. You must setup an [API key for Forecast](https://developer.forecast.io/) in order to use this Agent with ForecastIO. Set `expected_update_period_in_days` to the maximum amount of time that you'd expect to pass between Events being created by this Agent. MD event_description <<-MD Events look like this: { "location": "12345", "date": { "epoch": "1357959600", "pretty": "10:00 PM EST on January 11, 2013" }, "high": { "fahrenheit": "64", "celsius": "18" }, "low": { "fahrenheit": "52", "celsius": "11" }, "conditions": "Rain Showers", "icon": "rain", "icon_url": "http://icons-ak.wxug.com/i/c/k/rain.gif", "skyicon": "mostlycloudy", ... } MD default_schedule "8pm" def working? event_created_within?((interpolated['expected_update_period_in_days'].presence || 2).to_i) && !recent_error_logs? end def key_setup? interpolated['api_key'].present? && interpolated['api_key'] != "your-key" end def default_options { 'service' => 'wunderground', 'api_key' => 'your-key', 'location' => '94103', 'which_day' => '1', 'expected_update_period_in_days' => '2' } end def service interpolated["service"].presence || "wunderground" end def which_day (interpolated["which_day"].presence || 1).to_i end def location interpolated["location"].presence || interpolated["zipcode"] end def validate_options errors.add(:base, "service is required") unless service.present? errors.add(:base, "service must be set to 'forecastio' or 'wunderground'") unless ["forecastio", "wunderground"].include?(service) errors.add(:base, "location is required") unless location.present? errors.add(:base, "api_key is required") unless key_setup? errors.add(:base, "which_day selection is required") unless which_day.present? end def wunderground Wunderground.new(interpolated['api_key']).forecast_for(location)['forecast']['simpleforecast']['forecastday'] if key_setup? end def forecastio if key_setup? ForecastIO.api_key = interpolated['api_key'] lat, lng = location.split(',') ForecastIO.forecast(lat,lng)['daily']['data'] end end def model(service,which_day) if service == "wunderground" wunderground[which_day] elsif service == "forecastio" forecastio.each do |value| timestamp = Time.at(value.time) if (timestamp.to_date - Time.now.to_date).to_i == which_day day = { 'date' => { 'epoch' => value.time.to_s, 'pretty' => timestamp.strftime("%l:%M %p %Z on %B %d, %Y"), 'day' => timestamp.day, 'month' => timestamp.month, 'year' => timestamp.year, 'yday' => timestamp.yday, 'hour' => timestamp.hour, 'min' => timestamp.strftime("%M"), 'sec' => timestamp.sec, 'isdst' => timestamp.isdst ? 1 : 0 , 'monthname' => timestamp.strftime("%B"), 'monthname_short' => timestamp.strftime("%b"), 'weekday_short' => timestamp.strftime("%a"), 'weekday' => timestamp.strftime("%A"), 'ampm' => timestamp.strftime("%p"), 'tz_short' => timestamp.zone }, 'period' => which_day.to_i, 'high' => { 'fahrenheit' => value.temperatureMax.round().to_s, 'epoch' => value.temperatureMaxTime.to_s, 'fahrenheit_apparent' => value.apparentTemperatureMax.round().to_s, 'epoch_apparent' => value.apparentTemperatureMaxTime.to_s, 'celsius' => ((5*(Float(value.temperatureMax) - 32))/9).round().to_s }, 'low' => { 'fahrenheit' => value.temperatureMin.round().to_s, 'epoch' => value.temperatureMinTime.to_s, 'fahrenheit_apparent' => value.apparentTemperatureMin.round().to_s, 'epoch_apparent' => value.apparentTemperatureMinTime.to_s, 'celsius' => ((5*(Float(value.temperatureMin) - 32))/9).round().to_s }, 'conditions' => value.summary, 'icon' => value.icon, 'avehumidity' => (value.humidity * 100).to_i, 'sunriseTime' => value.sunriseTime.to_s, 'sunsetTime' => value.sunsetTime.to_s, 'moonPhase' => value.moonPhase.to_s, 'precip' => { 'intensity' => value.precipIntensity.to_s, 'intensity_max' => value.precipIntensityMax.to_s, 'intensity_max_epoch' => value.precipIntensityMaxTime.to_s, 'probability' => value.precipProbability.to_s, 'type' => value.precipType }, 'dewPoint' => value.dewPoint.to_s, 'avewind' => { 'mph' => value.windSpeed.round().to_s, 'kph' => (Float(value.windSpeed) * 1.609344).round().to_s, 'degrees' => value.windBearing.to_s }, 'visibility' => value.visibility.to_s, 'cloudCover' => value.cloudCover.to_s, 'pressure' => value.pressure.to_s, 'ozone' => value.ozone.to_s } return day end end end end def check if key_setup? create_event :payload => model(service, which_day).merge('location' => location) end end end end