alvarocastro/diamondbot

export default class ChatCommand {
    /**
     * @param {Object} options Command options.
     * @param {String} options.name Name of the command.
     * @param {String} [options.alias] Alias for the command.
     * @param {String[]} [options.aliases] Multiple aliases for the command.
     * @param {String} [options.description] A helpful text of what the command does.
     * @param {String} [options.format] A hint of what argument the command receives and how to pass them.
     * @param {Boolean} [options.hidden] Indicates if the command should be visible or not.
     * @param {String[]} [options.userPermissions] Array of permissions required for the command.
     * @param {Boolean} [botOwnerOverridesPermissions=false] Bot owner overrides permissions required for the command.
     * @param {Boolean} [botOwner=false] Command can only be run by the bot owner.
     * @param {Boolean} [nsfw=false] Command can only be run in NSFW channels.
     */
    constructor (options) {
        if (!options.name) {
            throw new Error('Command must have a name');
        }
        this.name = options.name;
        this.aliases = options.aliases ?? (options.alias ? [options.alias] : []);
        this.description = options.description ?? null;
        this.format = options.format ?? null;
        this.hidden = options.hidden ?? false;

        this.botOwner = options.botOwner ?? false;
        this.nsfw = options.nsfw ?? false;
        this.botOwnerOverridesPermissions = options.botOwnerOverridesPermissions ?? false;
        this.userPermissions = options.userPermissions ?? [];
    }

    /**
     * Method to check if the command can be run or not.
     * @method check
     * @param {Message} message Discord message that triggered the command.
     * @param {String[]} args Parsed args.
     * @param {GuildMemory} memory Memory of the guild.
     * @return {Boolean}
     */
    check (message, args, memory) {
        if (this.nsfw && !message.channel.nsfw) {
            return false;
        }

        const runnerIsOwner = this.bot.owner === message.author.id;
        if (this.botOwner) {
            return runnerIsOwner
        }

        const checkPermissions = !this.botOwnerOverridesPermissions || (this.botOwnerOverridesPermissions && !runnerIsOwner);

        if (checkPermissions) {
            for (const permission of this.userPermissions) {
                if (!message.member.hasPermission(permission)) {
                    return false;
                }
            }
        }

        return true;
    }

    /**
     * Method executed when the command is run.
     * @method exec
     * @param {Message} message Discord message that triggered the command.
     * @param {String[]} args Parsed args.
     * @param {GuildMemory} memory Memory of the guild.
     */
    exec (message, args, memory) {
        throw new Error(`Command "${this.name}" not implemented`);
    }
}