/*
 *
 * PlaceholderAPI
 * Copyright (C) 2019 Ryan McCarthy
 *
 * 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 me.clip.placeholderapi.expansion;

import me.clip.placeholderapi.PlaceholderAPI;
import me.clip.placeholderapi.PlaceholderAPIPlugin;
import me.clip.placeholderapi.PlaceholderHook;
import org.apache.commons.lang.Validate;
import org.bukkit.Bukkit;
import org.bukkit.configuration.ConfigurationSection;

import java.util.List;

public abstract class PlaceholderExpansion extends PlaceholderHook {

  /**
   * The name of this expansion
   *
   * @return {@link #getIdentifier()} by default, name of this expansion if specified
   */
  public String getName() {
    return getIdentifier();
  }

  /**
   * The placeholder identifier of this expanion
   *
   * @return placeholder identifier that is associated with this expansion
   */
  public abstract String getIdentifier();

  /**
   * The author of this expansion
   *
   * @return name of the author for this expansion
   */
  public abstract String getAuthor();

  /**
   * The version of this expansion
   *
   * @return current version of this expansion
   */
  public abstract String getVersion();

  /**
   * The name of the plugin that this expansion hooks into. by default will return the deprecated
   * {@link #getPlugin()} method
   *
   * @return plugin name that this expansion requires to function
   */
  public String getRequiredPlugin() {
    return getPlugin();
  }

  /**
   * The placeholders associated with this expansion
   *
   * @return placeholder list that this expansion provides
   */
  public List<String> getPlaceholders() {
    return null;
  }

  /**
   * Expansions that do not use the ecloud and instead register from the dependency should set this
   * to true to ensure that your placeholder expansion is not unregistered when the papi reload
   * command is used
   *
   * @return if this expansion should persist through placeholder reloads
   */
  public boolean persist() {
    return false;
  }

  /**
   * Check if this placeholder identfier has already been registered
   *
   * @return true if the identifier for this expansion is already registered
   */
  public boolean isRegistered() {
    Validate.notNull(getIdentifier(), "Placeholder identifier can not be null!");
    return PlaceholderAPI.getRegisteredIdentifiers().contains(getIdentifier());
  }

  /**
   * If any requirements need to be checked before this expansion should register, you can check
   * them here
   *
   * @return true if this hook meets all the requirements to register
   */
  public boolean canRegister() {
    return getRequiredPlugin() == null
        || Bukkit.getPluginManager().getPlugin(getRequiredPlugin()) != null;
  }

  /**
   * Attempt to register this PlaceholderExpansion
   *
   * @return true if this expansion is now registered with PlaceholderAPI
   */
  public boolean register() {
    Validate.notNull(getIdentifier(), "Placeholder identifier can not be null!");
    return PlaceholderAPI.registerExpansion(this);
  }

  /**
   * Quick getter for the {@link PlaceholderAPIPlugin} instance
   *
   * @return {@link PlaceholderAPIPlugin} instance
   */
  public PlaceholderAPIPlugin getPlaceholderAPI() {
    return PlaceholderAPIPlugin.getInstance();
  }

  public String getString(String path, String def) {
    return getPlaceholderAPI().getConfig()
        .getString("expansions." + getIdentifier() + "." + path, def);
  }

  public int getInt(String path, int def) {
    return getPlaceholderAPI().getConfig()
        .getInt("expansions." + getIdentifier() + "." + path, def);
  }

  public long getLong(String path, long def) {
    return getPlaceholderAPI().getConfig()
        .getLong("expansions." + getIdentifier() + "." + path, def);
  }

  public double getDouble(String path, double def) {
    return getPlaceholderAPI().getConfig()
        .getDouble("expansions." + getIdentifier() + "." + path, def);
  }

  public List<String> getStringList(String path) {
    return getPlaceholderAPI().getConfig()
        .getStringList("expansions." + getIdentifier() + "." + path);
  }

  public Object get(String path, Object def) {
    return getPlaceholderAPI().getConfig().get("expansions." + getIdentifier() + "." + path, def);
  }

  public ConfigurationSection getConfigSection(String path) {
    return getPlaceholderAPI().getConfig()
        .getConfigurationSection("expansions." + getIdentifier() + "." + path);
  }

  public ConfigurationSection getConfigSection() {
    return getPlaceholderAPI().getConfig().getConfigurationSection("expansions." + getIdentifier());
  }

  public boolean configurationContains(String path) {
    return getPlaceholderAPI().getConfig().contains("expansions." + getIdentifier() + "." + path);
  }


  /**
   * @deprecated As of versions greater than 2.8.7, use {@link #getRequiredPlugin()}
   */
  @Deprecated
  public String getPlugin() {
    return null;
  }

  /**
   * @deprecated As of versions greater than 2.8.7, use the expansion cloud to show a description
   */
  @Deprecated
  public String getDescription() {
    return null;
  }

  /**
   * @deprecated As of versions greater than 2.8.7, use the expansion cloud to display a link
   */
  @Deprecated
  public String getLink() {
    return null;
  }
}