package net.sourceforge.pain.logic.fn;


import net.sourceforge.pain.*;
import net.sourceforge.pain.data.*;
import net.sourceforge.pain.data.type.*;
import net.sourceforge.pain.logic.fn.util.*;

import java.util.*;


public final class GlobalFindFn {

	private GlobalFindFn() {
	}

	/** Looks for active and not active players by exact login matching */
	public static Player findPlayerByName(String name) {
		if (name == null) {
			return null;
		}
		name = name.toLowerCase();
		return Core.getWorld().getPlayersRegistry().getPlayer(name);
	}

	/** Looks for active player by exact login matching */

	public static Player findActivePlayerByName(String name) {
		if (name == null) {
			return null;
		}
		name = name.toLowerCase();
		Player p = Core.getWorld().getPlayersRegistry().getPlayer(name);
		if (p == null || p.getPrevActivePlayer() == null) { // logged out (prev is never null (circular))
			return null;
		}
		return p;
	}

	public static Interactive findInteractiveByPrefix(LogicalObject actor, String prefix) {
		if (prefix == null || prefix.length() == 0) {
			return null;
		}
		prefix = prefix.toLowerCase();
		if (prefix.equals("self")) {
			Interactive i = (Interactive) actor.getRole(Interactive.class);
			if (i != null) {
				return i;
			}
		}
		Player p = findActivePlayerByName(prefix);
		if (p != null) {
			return p.asInteractive();
		}

		String mostSimilarName = null;
		Interactive result = null;
		Player resPlayer = null;
		for (Iterator it = Core.extentIterator(Interactive.class); it.hasNext();) {
			Interactive i = (Interactive) it.next();
			String inames[] = i.getTargetList();
			for (int j = 0; j < inames.length; j++) {
				String checkedName = inames[j];
				if (checkedName.startsWith(prefix)) {
					if (checkedName.length() == prefix.length()) {
						return i; // found exact
					}
					if (mostSimilarName == null) {
						mostSimilarName = checkedName;
						result = i;
						continue;
					} else {
						if (Utils.isCloserTo(prefix, checkedName, mostSimilarName)) {
							Player checkedPlayer = (Player) i.getRole(Player.class);
							if (resPlayer != null && checkedPlayer == null) {
								// nothing to do, players has priority in global search
							} else {
								mostSimilarName = checkedName;
								result = i;
								resPlayer = checkedPlayer;
							}
						}
					}
				}
			}
		}
		return result;
	}

}