/**
 * Created by stefania on 7/17/17.
 */
import { Injectable } from '@angular/core';
import { Http, Response } from '@angular/http';
import { Observable } from 'rxjs/Rx';
import { PageHelpContent } from '../../models/help-content/page-help-content';
@Injectable()
export class HelpContentService {
    private _helpServiceUrl = "http://localhost:5000";
    constructor (private http: Http) {
    }
    cache : any = {};
    getActivePageContent(route: string) {
        if (!this.cache[route]) {
            this.cache[route] = this.http.get(this._helpServiceUrl + "/page/route?q=" + route)
                .map(res => <PageHelpContent> res.json())
                .catch(this.handleError)
                .share();
        }
        return this.cache[route];
    }
    private extractData(res: Response) {
        let body = res.json();
        return body.data || { };
    }
    private handleError (error: Response | any) {
        // In a real world app, we might use a remote logging infrastructure
        // We'd also dig deeper into the error to get a better message
        let errMsg = "";
        console.log(error);
        if (error instanceof Response) {
            const body = error.text() || '';
            //const err = body.error || JSON.stringify(body);
            errMsg = `${error.status} - ${error.statusText || ''} ${body}`;
        } else {
            errMsg = (error.message) ? error.message :
                error.status ? `${error.status} - ${error.statusText}` : 'Server error';
            console.error(errMsg); // log to console instead
        }
        return Observable.throw(errMsg);
    }
}