/*
 * This file is part of PlaceholderAPI
 *
 * PlaceholderAPI
 * Copyright (c) 2015 - 2021 PlaceholderAPI Team
 *
 * PlaceholderAPI 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.
 *
 * PlaceholderAPI 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.commands.impl.local;

import java.util.List;
import me.clip.placeholderapi.PlaceholderAPI;
import me.clip.placeholderapi.PlaceholderAPIPlugin;
import me.clip.placeholderapi.commands.PlaceholderCommand;
import me.clip.placeholderapi.expansion.PlaceholderExpansion;
import me.clip.placeholderapi.util.Msg;
import org.bukkit.command.CommandSender;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Unmodifiable;

public final class CommandInfo extends PlaceholderCommand {

  public CommandInfo() {
    super("info");
  }

  @Override
  public void evaluate(@NotNull final PlaceholderAPIPlugin plugin,
      @NotNull final CommandSender sender, @NotNull final String alias,
      @NotNull @Unmodifiable final List<String> params) {
    if (params.isEmpty()) {
      Msg.msg(sender,
          "&cYou must specify the name of the expansion.");
      return;
    }

    final PlaceholderExpansion expansion = plugin.getLocalExpansionManager()
        .findExpansionByIdentifier(params.get(0)).orElse(null);
    if (expansion == null) {
      Msg.msg(sender,
          "&cThere is no expansion loaded with the identifier: &f" + params.get(0));
      return;
    }

    final StringBuilder builder = new StringBuilder();

    builder.append("&7Placeholder expansion info for: &r")
        .append(expansion.getName())
        .append('\n')
        .append("&7Status: &r")
        .append(expansion.isRegistered() ? "&aRegistered" : "7cNotRegistered")
        .append('\n');

    final String author = expansion.getAuthor();
    if (author != null) {
      builder.append("&7Author: &r")
          .append(author)
          .append('\n');
    }

    final String version = expansion.getVersion();
    if (version != null) {
      builder.append("&7Version: &r")
          .append(version)
          .append('\n');
    }

    final String requiredPlugin = expansion.getRequiredPlugin();
    if (requiredPlugin != null) {
      builder.append("&7Requires plugin: &r")
          .append(requiredPlugin)
          .append('\n');
    }

    final List<String> placeholders = expansion.getPlaceholders();
    if (placeholders != null && !placeholders.isEmpty()) {
      builder.append("&8&m-- &7Placeholders &8&m--&r")
          .append('\n');

      for (final String placeholder : placeholders) {
        builder.append(placeholder)
            .append('\n');
      }
    }

    Msg.msg(sender, builder.toString());
  }

  @Override
  public void complete(@NotNull final PlaceholderAPIPlugin plugin,
      @NotNull final CommandSender sender, @NotNull final String alias,
      @NotNull @Unmodifiable final List<String> params, @NotNull final List<String> suggestions) {
    if (params.size() > 1) {
      return;
    }

    suggestByParameter(PlaceholderAPI.getRegisteredIdentifiers().stream(), suggestions,
        params.isEmpty() ? null : params.get(0));
  }

}