import { Injectable } from '@angular/core';
import { Logger } from '../../providers/logger/logger';

// providers
import { NodeWebkitProvider } from '../node-webkit/node-webkit';
import { PlatformProvider } from '../platform/platform';
import { PopupProvider } from '../popup/popup';

@Injectable()
export class ExternalLinkProvider {

  constructor(
    private popupProvider: PopupProvider,
    private logger: Logger,
    private platformProvider: PlatformProvider,
    private nodeWebkitProvider: NodeWebkitProvider
  ) {
    this.logger.info('ExternalLinkProvider initialized.');
  }


  private restoreHandleOpenURL(old: string): void {
    setTimeout(() => {
      (window as any).handleOpenURL = old;
    }, 500);
  }

  public open(url: string, optIn?: boolean, title?: string, message?: string, okText?: string, cancelText?: string): Promise<any> {
    return new Promise((resolve, reject) => {
      let old = (window as any).handleOpenURL;

      (window as any).handleOpenURL = (url) => {
        // Ignore external URLs
        this.logger.debug('Skip: ' + url);
      };

      if (this.platformProvider.isNW) {
        this.nodeWebkitProvider.openExternalLink(url);
        this.restoreHandleOpenURL(old);
      } else {
        if (optIn) {
          let openBrowser = (res) => {
            if (res) window.open(url, '_system');
            this.restoreHandleOpenURL(old);
          };
          this.popupProvider.ionicConfirm(title, message, okText, cancelText).then((res: boolean) => {
            openBrowser(res);
          });
        } else {
          window.open(url, '_system');
          this.restoreHandleOpenURL(old);
        }
      }
    });
  }

}