import { Headers, Http, Response } from '@angular/http';

export abstract class CreateBaseService {
    protected abstract apiUrl: string;
    protected headers: Headers = new Headers({'Content-Type': 'applicaton/json'});
    constructor(protected http: Http) {  }
    getModels(): Promise<any> {
        return this.http.get(this.apiUrl)
            .toPromise()
            .then((response: Response) => response.json())
            .catch(this.handleError);
    }
    protected handleError(error: any): Promise<any> {
        console.error('An error occured', error);
        return Promise.reject(error.message || error);
    }
}