// GenAirData.java - GENERATE AIR QUALITY DATA
//
// MAINTENANCE HISTORY
// DATE		PROGRAMMER AND DETAILS
// 25-08-07	JS	Original
//
//-----------------------------------------------------------------------------

// IMPORTS

import java.io.*;
import java.util.*;
import java.text.*;

//-----------------------------------------------------------------------------

// MAIN CLASS

public class GenAirData {

    //-------------------------------------------------------------------------

    // DEFINITIONS

    static private final String	FROM_LONG = "10120000";
				// From longitude
    static private final String	FROM_LAT = "00250000";
				// From latitude
    static private final String	TO_LONG = "10150000";
				// From longitude
    static private final String	TO_LAT = "00320000";
				// From latitude
    static private final int SENSOR_CNT = 498;
				// Number of sensors

    //-------------------------------------------------------------------------

    // CONVERT DEGREES, MINUTES AND SECONDS TO TENTHS OF SECONDS

    static private int
    dmsToTenths (
	String		dms)		// Degrees, minutes and seconds
    {
	int		tenths;		// Tenths of seconds

	tenths = Character.digit (dms.charAt(0), 10);
	tenths = tenths * 10 + Character.digit (dms.charAt(1), 10);
	tenths = tenths * 10 + Character.digit (dms.charAt(2), 10);
	tenths = tenths * 6 + Character.digit (dms.charAt(3), 10);
	tenths = tenths * 10 + Character.digit (dms.charAt(4), 10);
	tenths = tenths * 6 + Character.digit (dms.charAt(5), 10);
	tenths = tenths * 10 + Character.digit (dms.charAt(6), 10);
	tenths = tenths * 10 + Character.digit (dms.charAt(7), 10);
	return tenths;
    }

    //-------------------------------------------------------------------------

    // CONVERT TENTHS OF SECONDS INTO DEGREES, MINUTES AND SECONDS

    static private String
    tenthsToDms (
	int		tenths)		// Tenths of seconds
    {
	StringBuffer	sb;		// String buffer for formatting output

	sb = new StringBuffer();
	sb.append (tenths / (100*60*60*10));
	sb.append ((tenths / (10*60*60*10)) % 10);
	sb.append ((tenths / (60*60*10)) % 10);
	sb.append ((tenths / (10*60*10)) % 6);
	sb.append ((tenths / (60*10)) % 10);
	sb.append ((tenths / (10*10)) % 6);
	sb.append ((tenths / 10) % 10);
	sb.append (tenths % 10);
	return sb.toString();
    }

    //-------------------------------------------------------------------------

    // MAIN LINE

    static public void
    main (
	String[]	argv)		// Argument values
    {
	int		fromLongTenths;	// From longitude in tenths of degrees
	int		fromLatTenths;	// From latitude in tenths of degrees
	int		toLongTenths;	// To longitude in tenths of degrees
	int		toLatTenths;	// To latitude in tenths of degrees
	Random		rand;		// Random number generator
	int		i;		// General purpose index
	int		thisLongTenths;	// This longitude in tenths of degrees
	int		thisLatTenths;	// This latitude in tenths of degrees
	int		thisApi;	// This air polution index
	DecimalFormat	decFmt;		// Decimal formatter

	fromLongTenths = dmsToTenths (FROM_LONG);
	fromLatTenths = dmsToTenths (FROM_LAT);
	toLongTenths = dmsToTenths (TO_LONG);
	toLatTenths = dmsToTenths (TO_LAT);
	rand = new Random (20360);
	decFmt = new DecimalFormat ("000");

	for (i = 0; i < SENSOR_CNT; i++) {
	    thisLongTenths = fromLongTenths +
		rand.nextInt (toLongTenths - fromLongTenths + 1);
	    thisLatTenths = fromLatTenths +
		rand.nextInt (toLatTenths - fromLatTenths + 1);
	    thisApi = (int)((Math.exp(rand.nextDouble()*4) - 1) * 12.0);
	    System.out.println (
		'E' +
		tenthsToDms (thisLongTenths) +
		'N' +
		tenthsToDms (thisLatTenths) +
		decFmt.format(thisApi)
	    );
	}
    }
}