android-webview-header-service.ts

/// <reference path="../../../../references.d.ts" />

import {Injectable} from '@angular/core';
import * as application from 'application';
import {WebViewHeader} from './webview-header.abstract.service';

declare const android;

@Injectable()
export class AndroidWebviewHeader extends WebViewHeader {

    constructor() {
        super();
    }

    /**
     * Set the cookie header for the webview
     * @param header
     * @param url
     */
    public setHeader(header: string, url: string): void {
        try {
            const localAndroidApp: any = application.android;
            // Native CookieSyncManager for Android
            const cookieSyncManager: any = android.webkit.CookieSyncManager.createInstance(localAndroidApp.context);
            // Native cookieManager for Android
            const cookieManager: any = android.webkit.CookieManager.getInstance();

            const splittedHeader: Array<string> = header.split(';');
              
            cookieManager.removeSessionCookie();
            cookieManager.setCookie(this._betCommunityStore.getActiveBetCommunity().url, `${splittedHeader[0]};${splittedHeader[1]};${splittedHeader[2]};`);
            cookieManager.setAcceptCookie(true);
            cookieManager.flush();
            cookieSyncManager.sync();
        } catch (error) {
            console.log(error.message);
        }
    }
    /**
     * Removes the current cookie header
     */
    public removeHeader(): void {
        const localAndroidApp: any = application.android;
        const cookieSyncManager: any = android.webkit.CookieSyncManager.createInstance(localAndroidApp.context);
        const cookieManager: any = android.webkit.CookieManager.getInstance();
        cookieManager.removeSessionCookie();
        cookieManager.setCookie(this._betCommunityStore.getActiveBetCommunity().url, ``);
        cookieManager.flush();
        cookieSyncManager.sync();
    }
}

where to get the webview-header.abstract.service file?