package org.bukkit.command;

import org.bukkit.plugin.Plugin;

/**
 * Represents a {@link Command} belonging to a plugin
 */
public final class PluginCommand extends Command {
    private final Plugin owningPlugin;
    private CommandExecutor executor;

    protected PluginCommand(String name, Plugin owner) {
        super(name);
        this.executor = owner;
        this.owningPlugin = owner;
        this.usageMessage = "";
    }

    /**
     * Executes the command, returning its success
     *
     * @param sender Source object which is executing this command
     * @param commandLabel The alias of the command used
     * @param args All arguments passed to the command, split via ' '
     * @return true if the command was successful, otherwise false
     */
    public boolean execute(CommandSender sender, String commandLabel, String[] args) {
        boolean success = false;

        if (!owningPlugin.isEnabled()) {
            return false;
        }

        if (!testPermission(sender)) {
            return true;
        }

        try {
            success = executor.onCommand(sender, this, commandLabel, args);
        } catch (Throwable ex) {
            throw new CommandException("Unhandled exception executing command '" + commandLabel + "' in plugin " + owningPlugin.getDescription().getFullName(), ex);
        }

        if (!success && usageMessage.length() > 0) {
            for (String line: usageMessage.replace("<command>", commandLabel).split("\n")) {
                sender.sendMessage(line);
            }
        }

        return success;
    }

    /**
     * Sets the {@link CommandExecutor} to run when parsing this command
     *
     * @param executor New executor to run
     */
    public void setExecutor(CommandExecutor executor) {
        this.executor = executor;
    }

    /**
     * Gets the {@link CommandExecutor} associated with this command
     *
     * @return CommandExecutor object linked to this command
     */
    public CommandExecutor getExecutor() {
        return executor;
    }

    /**
     * Gets the owner of this PluginCommand
     *
     * @return Plugin that owns this command
     */
    public Plugin getPlugin() {
        return owningPlugin;
    }
}