/*
 * Copyright 2018 John Grosh (john.a.grosh@gmail.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.jagrosh.vortex.commands;

import com.jagrosh.jdautilities.command.Command;
import com.jagrosh.vortex.Constants;
import com.jagrosh.vortex.Vortex;
import net.dv8tion.jda.api.Permission;
import net.dv8tion.jda.api.entities.ChannelType;
import net.dv8tion.jda.api.entities.Role;

/**
 *
 * @author John Grosh (john.a.grosh@gmail.com)
 */
public abstract class ModCommand extends Command
{
    protected final Vortex vortex;
    
    public ModCommand(Vortex vortex, Permission... altPerms)
    {
        this.vortex = vortex;
        this.guildOnly = true;
        this.category = new Category("Moderation", event -> 
        {
            if(event.getChannelType() != ChannelType.TEXT)
            {
                event.replyError("This command is not available in Direct Messages!");
                return false;
            }
            Role modrole = vortex.getDatabase().settings.getSettings(event.getGuild()).getModeratorRole(event.getGuild());
            if(modrole!=null && event.getMember().getRoles().contains(modrole))
                return true;
            
            boolean missingPerms = false;
            for(Permission altPerm: altPerms)
            {
                if(altPerm.isText())
                {
                    if(!event.getMember().hasPermission(event.getTextChannel(), altPerm))
                        missingPerms = true;
                }
                else
                {
                    if(!event.getMember().hasPermission(altPerm))
                        missingPerms = true;
                }
            }
            if(!missingPerms)
                return true;
            if(event.getMember().getRoles().isEmpty())
                event.getMessage().addReaction(Constants.ERROR_REACTION).queue();
            else
                event.replyError("You must have the following permissions to use that: "+listPerms(altPerms));
            return false;
        });
    }
    
    private static String listPerms(Permission... perms)
    {
        if(perms.length==0)
            return "";
        StringBuilder sb = new StringBuilder(perms[0].getName());
        for(int i=1; i<perms.length; i++)
            sb.append(", ").append(perms[i].getName());
        return sb.toString();
    }
}
