/*************************************************************************
 *  This class find current stock info from Yahoo
 *  It uses the In Class to read from a Url
 *  @Author: http://www.cs.princeton.edu/introcs/31datatype
 */
 
public class StockQuote { 
    String symbol;
    // Given symbol, get current stock price.
    
    /**
     * To create an object you must specify the symbol ->IE StockQuote("ibm")
     */
    public StockQuote(String symbol){
        this.symbol=symbol;
    }
    
    public double getPrice() {
        In page = new In("http://finance.yahoo.com/q?s=" + symbol); 
        String input = page.readAll(); 
        int trade = input.indexOf("Last Trade:", 0);         // "Last trade:" index
        int from  = input.indexOf("<b><span", trade);        // "<b><span" index
        from      = input.indexOf(">", from + 4);            // ">" index
        int to    = input.indexOf("</span></b>", from);      // "</b>" index
        String price = input.substring(from + 1, to); 
        return Double.parseDouble(price); 
    } 

    // Given symbol, get current stock price.
    public String getName() {
        In page = new In("http://finance.yahoo.com/q?s=" + symbol); 
        String input = page.readAll(); 
        int p    = input.indexOf("<title>", 0);
        int from = input.indexOf("Summary for ", p);
        int to   = input.indexOf("- Yahoo! Finance", from);
        String name = input.substring(from + 12, to - 5);
        return name;
    } 

    // Given symbol, get current stock price.
    public String getDate(String symbol) {
        In page = new In("http://finance.yahoo.com/q?s=" + symbol); 
        String input = page.readAll(); 
        int p    = input.indexOf("<span id=\"yfs_market_time\">", 0);
        int from = input.indexOf(">", p);
        int to   = input.indexOf("-", from);        // no closing small tag
        String date = input.substring(from + 1, to);
        return date;
    } 




}