url.ts
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url.ts
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	import { URL } from "url";
	import type { ValidationResult } from "../../../chip-types/field.js";
	import { Field, Context } from "../../../main.js";

	export type UrlParams = Partial<{
	allowed_origins: string[];
	allowed_protocols: string[];
	}>;

	export default class Url extends Field<string> {
	typeName = "url";
	params: UrlParams;

	constructor(params: UrlParams = {}) {
	super();
	this.params = params;
	}

	async isProperValue(
	context: Context,
	value: string
	): Promise<ValidationResult> {
	const allowed_protocols = this.params.allowed_protocols
	? this.params.allowed_protocols.map((protocol) => `${protocol}:`)
	: [];
	let url;

	try {
	url = new URL(value);
	} catch (err) {
	return Field.invalid(err);
	}

	if (
	this.params.allowed_origins &&
	!this.params.allowed_origins.includes(url.hostname)
	) {
	return Field.invalid(
	context.app.i18n("not_allowed_domain", [
	url.hostname,
	this.params.allowed_origins,
	])
	);
	}

	if (
	this.params.allowed_protocols &&
	!allowed_protocols.includes(url.protocol)
	) {
	return Field.invalid(
	context.app.i18n("not_allowed_protocol", [
	url.protocol,
	this.params.allowed_protocols,
	])
	);
	}

	return Field.valid();
	}
	}