/**
 * Encapsulate and otherwise handle the parsing of a line from 
 * the web server log
 * @author gtowell
 * Created: April 29, 2020
 */
public class LogLine {
    /** The IP address extracted from the log line */
    private final String ipAddress;
    /** The line itself, stored here in case further processing is needed */
    private final String line;
    /** A counter, not properly a part of the line, but is data associaed with the line */
    private int count;

    /**
     * Constructor for the LogLine.  It takes a line from a log and 
     * does some parsing
     * @param lin the line from the log
     * @throws Exception if for some reason, the line cannot be parsed.
     */
    public LogLine(String lin) throws Exception {
        if (lin==null || lin.length()==0)
            throw new Exception("Log lines should not be null or empty");
        line = lin;
        count = 1;
        String[] spl = lin.trim().split("\\s+");
        if (spl.length==0)
            throw new Exception("The line could not be split");
        ipAddress = spl[0];
        // should check that this really looks like an IP address
    }

    /** Get the count */
    public int getCount() {
        return count;
    }

    /** Gte the IP */
    public String getIP() {
        return ipAddress;
    }

    /** Increment the ount by 1.
     * @return the new value of count.
     */
    public int incCount() {
        return ++count;
    }

    @Override
    public String toString() {
        return ipAddress;
    }

    /** A longer string version of the contents */
    public String toStringLong() {
        return ipAddress + " " + count;
    }

}