package it.tristana.commons.command;

import java.util.HashMap;
import java.util.Map;

import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

import it.tristana.commons.helper.CommonsHelper;

public class MainCommand implements CommandExecutor {

    private String command;
    private Map<String, SubCommand> commands;

    public MainCommand(String command) {
        this.command = command;
        commands = new HashMap<String, SubCommand>();
        registerSubCommand(CommandHelp.COMMAND, new CommandHelp(this));
    }

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        if (args.length > 0) {
            SubCommand subCommand = commands.get(args[0].toLowerCase());
            if (subCommand != null && canExecute(sender, subCommand)) {
                subCommand.execute(sender, args);
            }
            else {
                help(sender);
            }
        }
        else {
            help(sender);
        }
        return true;
    }

    static boolean canExecute(CommandSender sender, SubCommand command) {
        boolean result = false;
        String permission = command.getPermission();
        if (permission == null || sender.hasPermission(permission)) {
            if (command.isOnlyPlayers()) {
                if (sender instanceof Player) {
                    result = true;
                }
            }
            else {
                result = true;
            }
        }
        return result;
    }

    private void help(CommandSender sender) {
        CommonsHelper.info(sender, String.format("Type '/%s %s' for a list of commands", command, CommandHelp.COMMAND));
    }

    public void registerSubCommand(String name, SubCommand command) {
        commands.put(name.toLowerCase(), command);
    }

    public String getCommand() {
        return command;
    }

    public Map<String, SubCommand> getCommands() {
        return commands;
    }
}