import { Assert } from '@rsdk/common';

import type { PropertyParser } from '../../types';

import { InvalidProtocol, InvalidUrl } from './exception';

export class UrlParser implements PropertyParser<URL> {
  private readonly protocols: string[];

  constructor(...protocols: string[]) {
    this.protocols = protocols;
  }

  type(): string {
    return 'URL';
  }

  description(): string {
    return 'Parses string into instance of URL';
  }

  parse(value: unknown): URL {
    Assert.isString(value);

    try {
      const url = new URL(value);

      this.assertProtocol(url);
      return url;
    } catch (error) {
      throw new InvalidUrl(value, error);
    }
  }

  private assertProtocol(url: URL): void {
    if (this.protocols.length === 0) {
      return;
    }

    if (!this.protocols.includes(url.protocol)) {
      throw new InvalidProtocol(this.protocols, url.protocol, url);
    }
  }
}