/*
 *       _____  _       _    _____                                _
 *      |  __ \| |     | |  / ____|                              | |
 *      | |__) | | ___ | |_| (___   __ _ _   _  __ _ _ __ ___  __| |
 *      |  ___/| |/ _ \| __|\___ \ / _` | | | |/ _` | '__/ _ \/ _` |
 *      | |    | | (_) | |_ ____) | (_| | |_| | (_| | | |  __/ (_| |
 *      |_|    |_|\___/ \__|_____/ \__, |\__,_|\__,_|_|  \___|\__,_|
 *                                    | |
 *                                    |_|
 *            PlotSquared plot management system for Minecraft
 *                  Copyright (C) 2020 IntellectualSites
 *
 *     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/>.
 */
package com.plotsquared.bukkit.placeholder;

import be.maximvdw.placeholderapi.PlaceholderAPI;
import com.google.common.eventbus.Subscribe;
import com.plotsquared.bukkit.util.BukkitUtil;
import com.plotsquared.core.PlotSquared;
import com.plotsquared.core.player.PlotPlayer;
import com.plotsquared.core.util.placeholders.Placeholder;
import com.plotsquared.core.util.placeholders.PlaceholderRegistry;
import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;
import org.jetbrains.annotations.NotNull;

/**
 * Placeholder support for MVdWPlaceholderAPI
 */
public class MVdWPlaceholders {

    private static final String PREFIX = "plotsquared_";
    private final Plugin plugin;
    private final PlaceholderRegistry registry;

    public MVdWPlaceholders(@NotNull final Plugin plugin,
                            @NotNull final PlaceholderRegistry registry) {
        this.plugin = plugin;
        this.registry = registry;
        for (final Placeholder placeholder : registry.getPlaceholders()) {
            this.addPlaceholder(placeholder);
        }
        PlotSquared.get().getEventDispatcher().registerListener(this);
    }

    @Subscribe public void onNewPlaceholder(@NotNull final
        PlaceholderRegistry.PlaceholderAddedEvent event) {
        this.addPlaceholder(event.getPlaceholder());
    }

    private void addPlaceholder(@NotNull final Placeholder placeholder) {
        PlaceholderAPI.registerPlaceholder(plugin, PREFIX + String.format("%s", placeholder.getKey()),
            placeholderReplaceEvent -> {
                if (!placeholderReplaceEvent.isOnline() || placeholderReplaceEvent.getPlayer() == null) {
                    return "";
                }
                final PlotPlayer<Player> player = BukkitUtil.getPlayer(placeholderReplaceEvent.getPlayer());
                if (player == null) {
                    return "";
                }
                String key = placeholderReplaceEvent.getPlaceholder().substring(PREFIX.length());
                return registry.getPlaceholderValue(key, player);
            });
    }

}