Breathe

exports.handler = function(event, context) {

	if (event.request.intent) {
		if (event.request.intent.name == "FindCity") {
			var cityname = event.request.intent.slots.cityname.value;
			var http = require('http');
			var url = "http://api.breezometer.com/baqi/?key=30a932be434241a4a6e7b25b2564d736&location=" + cityname;

			http.get(url, function(response) {
				var data = '';
				response.on('data', function(x) {
					data += x;
				});
				response.on('end', function() {
					data = JSON.parse(data);
					var message = data.breezometer_description + ", in ," + cityname;
					message += ", Ask me for summary, or recommendations for children, sports, health, or pollutant";

					var sessionAttributes = {
						airdata : data,
						cityname : cityname
					};
					console.log("CITY NAME " + cityname);
					speak(message, context, sessionAttributes);
				});
			});

		} else if (event.request.intent.name == "GetSummary") {
			console.log("INTENT IS GET SUMMARY");
			getSummary(event, context);
		} else if (event.request.intent.name == "GetChildren") {
			console.log("INTENT IS GET CHILDREN");
			getRecommendationFor(event, context, 'children');
		} else if (event.request.intent.name == "GetSports") {
			console.log("INTENT IS GET SPORT");
			getRecommendationFor(event, context, 'sport');
		} else if (event.request.intent.name == "GetHealth") {
			console.log("INTENT IS GET HEALTH");
			getRecommendationFor(event, context, 'health');
		} else if (event.request.intent.name == "GetIndoors") {
			console.log("INTENT IS GET INDOORS");
			getRecommendationFor(event, context, 'inside');
		} else if (event.request.intent.name == "GetOutdoors") {
			console.log("INTENT IS GET OUTDOORS");
			getRecommendationFor(event, context, 'outside');
		} else if (event.request.intent.name == "GetPollutant") {
			console.log("INTENT IS GetPollutant");
			getRecommendationFor(event, context, 'pollutant');
		}

	} else {
		speak("Ask me for Air quality for a city. For example, Say get details for Santa Clara", context, undefined);
	}

};

function handleLaunch(event, context) {

}

function getSummary(event, context) {
	if (event.session.attributes) {
		data = event.session.attributes.airdata;
		cityname = event.session.attributes.cityname;

		var message = "In " + cityname + " , " + data.breezometer_description;
		message += ", The air quality index is " + data.breezometer_aqi;

		message += " , " + getCleanText(data.dominant_pollutant_text.main);
		message += ", Possible effects, " + getCleanText(data.dominant_pollutant_text.effects);
		message += ", Causes, " + getCleanText(data.dominant_pollutant_text.causes);

		message += ", For children, " + getCleanText(data.random_recommendations.children);
		message += ", For sports, " + getCleanText(data.random_recommendations.sport);
		message += ", For inside, " + getCleanText(data.random_recommendations.inside);
		message += ", For health, " + getCleanText(data.random_recommendations.outside);

		var sessionAttributes = {
			airdata : data,
			cityname : cityname
		};
		speak(message, context, sessionAttributes);
	} else
		speak("No data in session", context, undefined);
}

function getRecommendationFor(event, context, recType) {
	if (event.session.attributes) {
		data = event.session.attributes.airdata;
		cityname = event.session.attributes.cityname;

		var message = "In " + cityname + " for " + recType + "," + data.random_recommendations[recType];

		if ('pollutant' == recType) {
			message = "The dominant pollutant is , " + getCleanText(data.dominant_pollutant_description);
		}

		var sessionAttributes = {
			airdata : data,
			cityname : cityname
		};
		speak(message, context, sessionAttributes);
	} else
		speak("No data in session", context, undefined);
}

function getCleanText(inputText) {
	
	if(!inputText){
		return "No data available";
	}
	
	var cleanText = inputText.replace(/[^a-zA-Z ]/g, "");
	cleanText = cleanText.replace(/&/g, "and");
	return cleanText;
}

function speak(text, context, sessionAttributes) {
	var response = {
		outputSpeech : {
			type : "PlainText",
			text : text
		},
		card : {
			type : "Simple",
			title : "IOT",
			content : text
		},
		shouldEndSession : false
	};

	if (sessionAttributes) {
		context.succeed({
			response : response,
			sessionAttributes : sessionAttributes,
		});
	} else {
		context.succeed({
			response : response,
		});
	}
}