register(email: string, username: string, password: string, image: string, type: number): Promise<any> {
        return new Promise(resolve => {
            if (type === 1) {
                this.http.post(this.userRegisterUrl, { email: email, username: username, password: password, image: image, type: type })
                    .toPromise()
                    .then(response => {
                        resolve(response);
                    })
                    .catch(this.handleError);
            } else if (type === 2 || type === 3) {
                this.http.post(this.userRegisterUrl, { email: email, username: username, token: password, image: image, type: type })
                    .toPromise()
                    .then(response => {
                        resolve(response);
                    })
                    .catch(this.handleError);
            }
        });
    }