import color from 'picocolors';
import Prompt, { type PromptOptions } from './prompt.js';

interface PasswordOptions extends PromptOptions<PasswordPrompt> {
	mask?: string;
}
export default class PasswordPrompt extends Prompt {
	valueWithCursor = '';
	private _mask = '•';
	get cursor() {
		return this._cursor;
	}
	get masked() {
		return this.value.replaceAll(/./g, this._mask);
	}
	constructor({ mask, ...opts }: PasswordOptions) {
		super(opts);
		this._mask = mask ?? '•';

		this.on('finalize', () => {
			this.valueWithCursor = this.masked;
		});
		this.on('value', () => {
			if (this.cursor >= this.value.length) {
				this.valueWithCursor = `${this.masked}${color.inverse(color.hidden('_'))}`;
			} else {
				const s1 = this.masked.slice(0, this.cursor);
				const s2 = this.masked.slice(this.cursor);
				this.valueWithCursor = `${s1}${color.inverse(s2[0])}${s2.slice(1)}`;
			}
		});
	}
}
