/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef ULTIMA4_CORE_SETTINGS_H
#define ULTIMA4_CORE_SETTINGS_H

#include "ultima/ultima4/core/observable.h"
#include "ultima/ultima4/core/types.h"
#include "ultima/shared/conf/conf_serializer.h"
#include "common/hash-str.h"

namespace Ultima {
namespace Ultima4 {

#define MIN_SHAKE_INTERVAL              50

#define MAX_BATTLE_SPEED                10
#define MAX_KEY_DELAY                   1000
#define MAX_KEY_INTERVAL                100
#define MAX_CYCLES_PER_SECOND           20
#define MAX_SPELL_EFFECT_SPEED          10
#define MAX_CAMP_TIME                   10
#define MAX_INN_TIME                    10
#define MAX_SHRINE_TIME                 20
#define MAX_SHAKE_INTERVAL              200
#define MAX_VOLUME                      10

#define DEFAULT_GEM_LAYOUT              "Standard"
#define DEFAULT_LINEOFSIGHT             "DOS"
#define DEFAULT_SCREEN_SHAKES           1
#define DEFAULT_GAMMA                   100
#define DEFAULT_VOLUME_FADES            1
#define DEFAULT_SHORTCUT_COMMANDS       0
#define DEFAULT_KEY_DELAY               500
#define DEFAULT_KEY_INTERVAL            30
#define DEFAULT_FILTER_MOVE_MESSAGES    0
#define DEFAULT_BATTLE_SPEED            5
#define DEFAULT_ENHANCEMENTS            1
#define DEFAULT_CYCLES_PER_SECOND       4
#define DEFAULT_ANIMATION_FRAMES_PER_SECOND 24
#define DEFAULT_DEBUG                   0
#define DEFAULT_VALIDATE_XML            1
#define DEFAULT_SPELL_EFFECT_SPEED      10
#define DEFAULT_CAMP_TIME               10
#define DEFAULT_INN_TIME                8
#define DEFAULT_SHRINE_TIME             16
#define DEFAULT_SHAKE_INTERVAL          100
#define DEFAULT_BATTLE_DIFFICULTY       "Normal"
#define DEFAULT_LOGGING                 ""
#define DEFAULT_TITLE_SPEED_RANDOM      150
#define DEFAULT_TITLE_SPEED_OTHER       30

//--Tile transparency stuff
#define DEFAULT_SHADOW_PIXEL_OPACITY    64
#define DEFAULT_SHADOW_PIXEL_SIZE       2

struct SettingsEnhancementOptions {
	bool _activePlayer;
	bool _u5SpellMixing;
	bool _u5Shrines;
	bool _u5Combat;
	bool _slimeDivides;
	bool _gazerSpawnsInsects;
	bool _textColorization;
	bool _c64ChestTraps;
	bool _smartEnterKey;
	bool _peerShowsObjects;
	bool _u4TileTransparencyHack;
	int  _u4TileTransparencyHackPixelShadowOpacity;
	int  _u4TrileTransparencyHackShadowBreadth;

	bool operator==(const SettingsEnhancementOptions &s) const;
};

struct MouseOptions {
	bool _enabled;

	bool operator==(const MouseOptions &s) const {
		return _enabled == s._enabled;
	}
};

/**
 * SettingsData stores all the settings information.
 */
class SettingsData {
public:
	bool operator==(const SettingsData &) const;
	bool operator!=(const SettingsData &) const;

	int _battleSpeed;
	bool _campingAlwaysCombat;
	int _campTime;
	bool _debug;
	bool _enhancements;
	SettingsEnhancementOptions _enhancementsOptions;
	bool _filterMoveMessages;
	int _gameCyclesPerSecond;
	int _screenAnimationFramesPerSecond;
	bool _innAlwaysCombat;
	int _innTime;
	MouseOptions _mouseOptions;
	uint _scale;
	bool _screenShakes;
	int _gamma;
	int _shakeInterval;
	bool _shortcutCommands;
	int _shrineTime;
	int _spellEffectSpeed;
	bool _validateXml;
	bool _volumeFades;
	int _titleSpeedRandom;
	int _titleSpeedOther;

	int _eventTimerGranularity;
	Common::String _filter;
	Common::String _gemLayout;
	Common::String _lineOfSight;
	Common::String _videoType;
	Common::String _battleDiff;
	Common::String _logging;
	Common::String _game;
};

/**
 * The settings class is a singleton that holds all the settings
 * information.  It is dynamically initialized when first accessed.
 */
class Settings : public SettingsData, public Observable<Settings *> {
	typedef Common::HashMap<Common::String, Common::String> SettingsMap;
private:
	static Settings *_instance;
	Std::vector<Common::String> _battleDiffs;
private:
	/**
	 * Default contructor.  Settings is a singleton so this is private.
	 */
	Settings();

	/**
	 * Synchronize settings with ConfMan
	 */
	void synchronize(Shared::ConfSerializer &s);
public:
	/* Methods */

	/**
	 * Return the global instance of settings.
	 */
	static Settings &getInstance();
	void setData(const SettingsData &data);

	/**
	 * Write the settings out into a human readable file.  This also
	 * notifies observers that changes have been committed.
	 */
	bool write();

	const Std::vector<Common::String> &getBattleDiffs();
};

/* the global settings */
#define settings (Settings::getInstance())

} // End of namespace Ultima4
} // End of namespace Ultima

#endif