// Weather Bot
// Returns the weather in the city you want. For students finished with the tutorial

using System;
using System.Text.RegularExpressions;  //For the Regex type variable
using System.Xml;  //For parsing the weather RSS feed
namespace ChatBot 
{
    class WeatherBot : BasicBot 
    {
        public override string HandleMessage(string message, string user) 
        {
	    	if (User.RegexMatch("weather|temperature", message) || state != "0") 
	    	{ 
	    		if (state == "1" && User.RegexMatch("(?<city>[a-zA-Z ]+),(?<state>[a-zA-Z ]+)", message)) 
	    		{
				Regex locationr = new Regex(@"(weather )?(?<city>[a-zA-Z\s]+),(?<state>[a-zA-Z\s]+)");
			        Match locationm = locationr.Match(message);
				string city = locationm.Groups["city"].Value;                   
			        string stateS = locationm.Groups["state"].Value;
				state = "0";
				return "The current conditions in " + city + ", " + stateS + " are: " + User.RSSWeatherToday(city, stateS);
			}
	    		if (User.RegexMatch("in (?<city>[a-zA-Z ]+),(?<state>[a-zA-Z ]+)", message)) 
	    		{
	    			Regex locationr = new Regex(@"in (?<city>[a-zA-Z\s]+),(?<state>[a-zA-Z\s]+)");
                		Match locationm = locationr.Match(message);
	    			string city = locationm.Groups["city"].Value;                   
                    		string stateS = locationm.Groups["state"].Value;
				state = "0";
				return "The current conditions in " + city + ", " + stateS + " are: " + User.RSSWeatherToday(city, stateS);
			}
			else 
			{
				state = "1";
				return "The weather in what city and state?";
			}
		} 
		else
	    		return "Hi, I'm the weather bot. Ask about today's weather!";
        }
    }
}