Angelmaneuver/command-launcher

import { BaseInputGuide } from '../base/input';

export class KeepHistoryNumberGuide extends BaseInputGuide {
    public init(): void {
        super.init();

        this.prompt       = `Enter the maximum number of terminal commands you want to keep in the history.`;
        this.initialValue = this.settings.keepHistoryNumber.toString();
        this.validate     = this.validator;
    }

    protected async inputStepAfter(): Promise<void> {
        this.settings.updateKeepHistoryNumber(Number(this._inputValue));

        return super.inputStepAfter();
    }

    public async validator(value: string): Promise<string | undefined> {
        const string2Number = Number(value);

        if (!isNaN(string2Number) && (0 <= string2Number && 65555 >= string2Number)) {
            return undefined;
        } else {
            return new Promise<string>((resolve, reject) => {
                resolve(`Enter a number between 0 and 65555.`);
            });
        }
    }
}