/*
 * Copyright 2003-2018 The Music Player Daemon Project
 * http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef MPD_TAG_SONG_FILTER_HXX
#define MPD_TAG_SONG_FILTER_HXX

#include "ISongFilter.hxx"
#include "StringFilter.hxx"

#include <stdint.h>

template<typename T> struct ConstBuffer;
enum TagType : uint8_t;
struct Tag;
struct TagItem;
struct LightSong;

class TagSongFilter final : public ISongFilter {
	TagType type;

	StringFilter filter;

public:
	TagSongFilter(TagType _type, StringFilter &&_filter) noexcept
		:type(_type), filter(std::move(_filter)) {}

	TagType GetTagType() const {
		return type;
	}

	const auto &GetValue() const noexcept {
		return filter.GetValue();
	}

	bool GetFoldCase() const {
		return filter.GetFoldCase();
	}

	bool IsNegated() const noexcept {
		return filter.IsNegated();
	}

	void ToggleNegated() noexcept {
		filter.ToggleNegated();
	}

	ISongFilterPtr Clone() const noexcept override {
		return std::make_unique<TagSongFilter>(*this);
	}

	std::string ToExpression() const noexcept override;
	bool Match(const LightSong &song) const noexcept override;

private:
	bool MatchNN(const Tag &tag) const noexcept;
	bool MatchNN(const TagItem &tag) const noexcept;
};

#endif
