package eecs1022;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;
import java.util.TreeMap;

public class Cities 
{
    public static void main(String[] args) throws IOException  
    {
	String name = "cities.txt";
	File file = new File(name);
	Scanner input = new Scanner(file);
	Map<String, URL> cities = new TreeMap<String, URL>();
	while (input.hasNextLine())
	{
	    String line = input.nextLine();
	    String[] part = line.split("  ");
	    String city = part[1];
	    URL url = new URL("https://weather.gc.ca/city/pages/" + part[0]);
	    cities.put(city, url);
	}
	input.close();
	
	Set<String> keys = cities.keySet();
	String[] temp = new String[keys.size()];
	String[] keysArray = keys.toArray(temp);
	List<String> list = Arrays.asList(keysArray);
	Collections.shuffle(list);
	
	final String PREFIX = "<dd class=\"mrgn-bttm-0 wxo-metric-hide\">";
	
	for (int i = 0; i < 10; i++)
	{
	    String city = list.get(i);
	    System.out.print(city + "\t");
	    URL url = cities.get(city);
	    InputStream stream = url.openStream();
	    Scanner web = new Scanner(stream);
	    boolean found = false;
	    while (web.hasNextLine() && !found)
	    {
		String line = web.nextLine();
		if (line.contains("<dt>Temperature:</dt>"))
		{
		    line = web.nextLine();
		    line = line.trim();
		    line = line.substring(PREFIX.length());
		    int index = line.indexOf("&");
		    line = line.substring(0, index);
		    System.out.println(line);
		    found = true;
		}
	    }
	    web.close();
	}
    }
}