/*
 * Copyright (C) 2021 Emeric Poupon
 *
 * This file is part of LMS.
 *
 * LMS 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 3 of the License, or
 * (at your option) any later version.
 *
 * LMS 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 LMS.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include <optional>
#include <string>
#include <string_view>
#include <unordered_map>
#include <vector>

#include "database/Types.hpp"

namespace UserInterface
{
	class Filters;

	class DatabaseCollectorBase
	{
		public:
			using Range = Database::Range;

			virtual ~DatabaseCollectorBase() {}

			enum class Mode
			{
				Random,
				Starred,
				RecentlyPlayed,
				RecentlyAdded,
				MostPlayed,
				Search,
				All
			};

			DatabaseCollectorBase(Filters& filters, Mode defaultMode, std::optional<std::size_t> maxCount = std::nullopt);

			Mode getMode() const { return _mode; }
			void setMode(Mode mode) { _mode = mode; }
			void setMaxCount(std::size_t maxCount) { _maxCount = maxCount; }
			void setSearch(std::string_view search);

		protected:
			std::optional<Range>	getActualRange(std::optional<Range> range) const;
			std::optional<std::size_t> getMaxCount() const;
			Filters&				getFilters() { return _filters; }
			const std::vector<std::string_view>& getSearchKeywords() const { return _searchKeywords; }

		private:
			Filters&	_filters;
			std::string	_searchText;
			std::vector<std::string_view> _searchKeywords;
			Mode		_mode;
			std::optional<std::size_t> _maxCount;
	};
} // ns UserInterface