116 lines
4.1 KiB
TypeScript
116 lines
4.1 KiB
TypeScript
import { Injectable, OnInit, PLATFORM_ID, Inject,InjectionToken , Optional, Injector } from '@angular/core';
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import { isPlatformBrowser} from '@angular/common';
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import { Http, Response, Headers, RequestOptions } from '@angular/http';
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import { Observable, Subscription, BehaviorSubject } from 'rxjs/Rx';
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import 'rxjs/add/operator/map';
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import 'rxjs/add/operator/toPromise';
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import { EnvProperties } from './env-properties';
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import { DOCUMENT } from '@angular/platform-browser';
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@Injectable()
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export class EnvironmentSpecificService {
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public envSpecific: EnvProperties;
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public domain: string;
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public envSpecificNull: EnvProperties = null;
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testBrowser: boolean;
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private envSpecificSubject: BehaviorSubject<EnvProperties> = new BehaviorSubject<EnvProperties>(null);
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private propertiesUrl = "/assets/env-properties.json";
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constructor(private http: Http, @Inject(PLATFORM_ID) private platformId: string, private injector: Injector) {
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this.testBrowser = isPlatformBrowser(platformId);
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if (this.testBrowser) {
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//this is only executed on the browser
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}
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}
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public loadEnvironment() {
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// Only want to do this once - if root page is revisited, it calls this again.
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if (this.envSpecific === null || this.envSpecific === undefined) {
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var domain = this.getDomain();
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var location = this.getFullUrl();
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// console.log('loadEnvironment: Loading '+ location);
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return this.http.get(location)
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.map((data) => {
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var properties:EnvProperties=data.json();
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properties.domain = domain;
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this.envSpecific = properties;
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return properties;
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})
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.toPromise<EnvProperties>();
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}
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// console.log('loadEnvironment: already loaded ');
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return Promise.resolve(this.envSpecific);
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}
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public subscribeEnvironment() {
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// Only want to do this once - if root page is revisited, it calls this again.
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if (this.envSpecific === null || this.envSpecific === undefined) {
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var domain = this.getDomain();
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var location = this.getFullUrl();
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// console.log('subscribeEnvironment: Loading '+ location);
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return this.http.get(location)
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.map((data) => {
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var properties:EnvProperties=data.json();
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properties.domain = domain;
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this.envSpecific = properties;
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return properties;
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})
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}
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// console.log('subscribeEnvironment: already loaded ');
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return Observable.of(this.envSpecific);
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}
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getFullUrl(){
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var location ="";
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var domain = "";
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if (typeof document == 'undefined') {
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let req = this.injector.get('request');
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domain = req.get('host').split(":")[0];
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location = (domain.indexOf(".openaire.eu")!=-1?"https://":"http://")+ req.get('host') + this.propertiesUrl;
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}else{
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location = document.location.protocol +"//" + document.location.host+this.propertiesUrl;
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domain = document.location.hostname;
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}
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return location;
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}
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getDomain(){
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var domain = "";
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if (typeof document == 'undefined') {
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let req = this.injector.get('request');
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domain = req.get('host').split(":")[0];
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}else{
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domain = document.location.hostname;
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}
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return domain;
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}
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public setEnvProperties(es: EnvProperties) {
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// This has already been set so bail out.
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if (es === null || es === undefined) {
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return;
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}
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this.envSpecific = es;
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//console.log(this.envSpecific);
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if (this.envSpecificSubject) {
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this.envSpecificSubject.next(this.envSpecific);
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}
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}
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/*
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Call this if you want to know when EnvProperties is set.
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*/
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public subscribe(caller: any, callback: (caller: any, es: EnvProperties) => void) {
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this.envSpecificSubject
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.subscribe((es) => {
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if (es === null) {
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return;
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}
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callback(caller, es);
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});
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}
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}
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