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/*
 * Copyright (C) 2023 Parisi Alessandro - [email protected]
 * This file is part of MaterialFX (https://github.com/palexdev/MaterialFX)
 *
 * MaterialFX is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3 of the License,
 * or (at your option) any later version.
 *
 * MaterialFX 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with MaterialFX. If not, see .
 */

package io.github.palexdev.mfxcore.settings;

import java.util.*;
import java.util.prefs.PreferenceChangeListener;
import java.util.prefs.Preferences;

public abstract class Settings {
	//================================================================================
	// Properties
	//================================================================================
	protected final Preferences prefs;
	protected static final Map, Set>> settingsDB = new HashMap<>();

	//================================================================================
	// Constructors
	//================================================================================
	protected Settings() {
		prefs = init();
	}

	//================================================================================
	// Abstract Methods
	//================================================================================
	protected abstract String node();

	//================================================================================
	// Methods
	//================================================================================
	protected Preferences init() {
		if (prefs == null) return Preferences.userRoot().node(node());
		return prefs;
	}

	protected StringSetting registerString(String name, String description, String defaultValue) {
		StringSetting setting = StringSetting.of(name, description, defaultValue, this);
		Set> set = settingsDB.computeIfAbsent(getClass(), c -> new LinkedHashSet<>());
		set.add(setting);
		return setting;
	}

	protected BooleanSetting registerBoolean(String name, String description, boolean defaultValue) {
		BooleanSetting setting = BooleanSetting.of(name, description, defaultValue, this);
		Set> set = settingsDB.computeIfAbsent(getClass(), c -> new LinkedHashSet<>());
		set.add(setting);
		return setting;
	}

	protected NumberSetting registerDouble(String name, String description, double defaultValue) {
		NumberSetting setting = NumberSetting.forDouble(name, description, defaultValue, this);
		Set> set = settingsDB.computeIfAbsent(getClass(), c -> new LinkedHashSet<>());
		set.add(setting);
		return setting;
	}

	protected NumberSetting registerFloat(String name, String description, float defaultValue) {
		NumberSetting setting = NumberSetting.forFloat(name, description, defaultValue, this);
		Set> set = settingsDB.computeIfAbsent(getClass(), c -> new LinkedHashSet<>());
		set.add(setting);
		return setting;
	}

	protected NumberSetting registerInteger(String name, String description, int defaultValue) {
		NumberSetting setting = NumberSetting.forInteger(name, description, defaultValue, this);
		Set> set = settingsDB.computeIfAbsent(getClass(), c -> new LinkedHashSet<>());
		set.add(setting);
		return setting;
	}

	protected NumberSetting registerLong(String name, String description, long defaultValue) {
		NumberSetting setting = NumberSetting.forLong(name, description, defaultValue, this);
		Set> set = settingsDB.computeIfAbsent(getClass(), c -> new LinkedHashSet<>());
		set.add(setting);
		return setting;
	}

	public void onChange(PreferenceChangeListener pcl) {
		prefs.addPreferenceChangeListener(pcl);
	}

	public void removeOnChange(PreferenceChangeListener pcl) {
		prefs.removePreferenceChangeListener(pcl);
	}

	public void reset() {
		Optional.ofNullable(settingsDB.get(getClass()))
			.ifPresent(s -> s.forEach(Setting::reset));
	}

	public static void reset(Class klass) {
		Optional.ofNullable(settingsDB.get(klass))
			.ifPresent(s -> s.forEach(Setting::reset));
	}

	public static void resetAll() {
		settingsDB.values().stream()
			.flatMap(Collection::stream)
			.forEach(Setting::reset);
	}

	//================================================================================
	// Getters/Setters
	//================================================================================
	protected Preferences prefs() {
		return prefs;
	}

	public static Set> getSettings(Class c) {
		return Optional.ofNullable(settingsDB.get(c))
			.map(Collections::unmodifiableSet)
			.orElse(Collections.emptySet());
	}

	public static Map, Set>> getSettingsDB() {
		return Collections.unmodifiableMap(settingsDB);
	}
}