package com.onaro.sanscreen.client.view.tabular.value;

import java.text.Collator;

import org.apache.commons.lang3.StringUtils;

/**
 * Parses names of the format SP A  Port: 2. This class is immutable and can be cached.
 */
public class EMCTableValue implements TableValue{
    private final Object display;
    private final String prefix;
    private final int port;

    public EMCTableValue(String prefix, int port, Object display) {
        this.display = display;
        this.port = port;
        this.prefix = prefix;
    }

    public Object getDisplay() {
        return display != null ? display : StringUtils.EMPTY;
    }

    public int getPort() {
        return port;
    }

    public String getPrefix() {
        return prefix;
    }

    @Override
    public int compareTo (TableValue o) {
        if (o instanceof EMCTableValue) {
            EMCTableValue other = (EMCTableValue) o;

            int prefixCompare = getPrefix().compareTo(other.getPrefix());
            if (prefixCompare == 0) {
                return getPort() - other.getPort();
            } else {
                return prefixCompare;
            }
        } else {
            // Use natural language sort order.
            return Collator.getInstance().compare(getDisplay().toString(), (o.getDisplay()).toString());
        }
    }

    /**
     * Since this method is used by he grouping-table, it returns the display value.
     * @return Return's the same value as {@link TableValue#getDisplay} does
     */
    public String toString() {
        return getDisplay().toString();
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + port;
        result = prime * result + ((prefix == null) ? 0 : prefix.hashCode());
        result = prime * result + ((display == null) ? 0 : display.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) return true;
        if (obj == null) return false;
        if (getClass() != obj.getClass()) return false;
        EMCTableValue other = (EMCTableValue) obj;
        if (port != other.port) return false;
        if (prefix == null) {
            if (other.prefix != null) return false;
        }
        else if (!prefix.equals(other.prefix)) return false;
        if (display == null) {
            if (other.display != null) return false;
        }
        else if (!display.equals(other.display)) return false;
        return true;
    }
}