/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012-2017 gnosygnu@gmail.com

XOWA is licensed under the terms of the General Public License (GPL) Version 3,
or alternatively under the terms of the Apache License Version 2.0.

You may use XOWA according to either of these licenses as is most appropriate
for your project on a case-by-case basis.

The terms of each license can be found in the source code repository:

GPLv3 License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-GPLv3.txt
Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
*/
package gplx.xowa.langs.kwds; import gplx.*; import gplx.xowa.*; import gplx.xowa.langs.*;
import gplx.core.btries.*;
import gplx.xowa.langs.parsers.*;
public class Xol_kwd_mgr implements Gfo_invk {
	private final    Xol_lang_itm lang; private final    Xol_kwd_grp[] grps = new Xol_kwd_grp[Xol_kwd_grp_.Id__max];
	private Btrie_slim_mgr kwd_default_trie; private byte[] kwd_default_key; private boolean kwd_default_init_needed = true;
	public Xol_kwd_mgr(Xol_lang_itm lang) {this.lang = lang;}
	public int Len() {return grps.length;}
	public void Clear() {
		int len = grps.length;
		for (int i = 0; i < len; ++i)
			grps[i] = null;
	}
	public Btrie_slim_mgr Trie_raw() {if (trie_raw == null) trie_raw = Xol_kwd_mgr.trie_(this, Xol_kwd_grp_.Id_str_rawsuffix); return trie_raw;} private Btrie_slim_mgr trie_raw;
	public Btrie_slim_mgr Trie_nosep() {if (trie_nosep == null) trie_nosep = Xol_kwd_mgr.trie_(this, Xol_kwd_grp_.Id_nocommafysuffix); return trie_nosep;} private Btrie_slim_mgr trie_nosep;
	public void Kwd_default_match_reset() {kwd_default_init_needed = true;}	// TEST:
	public boolean Kwd_default_match(byte[] match) {	// handle multiple #default keywords; DATE:2014-07-28
		if (match == null) return false;			// null never matches #default
		int match_len = match.length;
		if (match_len == 0) return false;			// "" never matches default
		if (kwd_default_init_needed) {
			kwd_default_init_needed = false;
			Xol_kwd_grp grp = this.Get_at(Xol_kwd_grp_.Id_xtn_default);
			int len = grp.Itms().length;
			if (len == 1) 
				kwd_default_key = grp.Itms()[0].Val();
			else {
				kwd_default_trie = Btrie_slim_mgr.new_(grp.Case_match());
				for (int i = 0; i < len; i++) {
					Xol_kwd_itm itm = grp.Itms()[i];
					kwd_default_trie.Add_obj(itm.Val(), itm);
				}
			}
		}
		return kwd_default_trie == null
			? Bry_.Has_at_bgn(match, kwd_default_key, 0, match_len)
			: kwd_default_trie.Match_bgn(match, 0, match_len) != null
			;
	}
	public Xol_kwd_grp Get_at(int id) {return grps[id];}
	public Xol_kwd_grp Get_or_new(int id) {
		Xol_kwd_grp rv = grps[id];
		if (rv == null) {
			rv = new Xol_kwd_grp(Xol_kwd_grp_.Bry_by_id(id));
			grps[id] = rv;
		}
		return rv;
	}
	public Xol_kwd_grp New(boolean case_match, int id, String... words_str) {
		Xol_kwd_grp rv = Get_or_new(id);
		rv.Srl_load(case_match, Bry_.Ary(words_str));
		return rv;
	}
	public Object Invk(GfsCtx ctx, int ikey, String k, GfoMsg m) {
		if		(ctx.Match(k, Invk_lang))					return lang;
		else if	(ctx.Match(k, Invk_load_text))				Xol_lang_srl.Load_keywords(this, m.ReadBry("v"));
		else	return Gfo_invk_.Rv_unhandled;
		return this;
	}	private static final String Invk_lang = Xol_lang_srl.Invk_lang, Invk_load_text = Xol_lang_srl.Invk_load_text;
	public static Btrie_slim_mgr trie_(Xol_kwd_mgr mgr, int id) {
		Xol_kwd_grp grp = mgr.Get_at(id);
		Btrie_slim_mgr rv = Btrie_slim_mgr.new_(grp.Case_match());
		int len = grp.Itms().length;
		for (int i = 0; i < len; i++) {
			Xol_kwd_itm itm = grp.Itms()[i];
			rv.Add_obj(itm.Val(), itm);
		}
		return rv;
	}
	public static Hash_adp_bry hash_(Xol_kwd_mgr mgr, int id) {
		Xol_kwd_grp grp = mgr.Get_at(id);
		Hash_adp_bry rv = Hash_adp_bry.c__u8(grp.Case_match(), mgr.lang.Case_mgr());
		int len = grp.Itms().length;
		for (int i = 0; i < len; i++) {
			Xol_kwd_itm itm = grp.Itms()[i];
			rv.Add(itm.Val(), itm);
		}
		return rv;
	}
}
