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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x | import { Injectable, InjectionToken, Injector, Type } from '@angular/core';
import { Store, select } from '@ngrx/store';
import { once } from 'lodash-es';
import { noop } from 'rxjs';
import { first } from 'rxjs/operators';
import { FeatureToggleService, FeatureToggleType } from 'ish-core/feature-toggle.module';
import { getIdentityProvider } from 'ish-core/store/core/configuration';
import { whenTruthy } from 'ish-core/utils/operators';
import { IdentityProvider } from './identity-provider.interface';
interface IdentityProviderImplementor {
type: string;
implementor: Type<IdentityProvider<unknown>>;
feature?: FeatureToggleType;
}
export const IDENTITY_PROVIDER_IMPLEMENTOR = new InjectionToken<IdentityProviderImplementor>(
'identityProviderImplementor'
);
@Injectable({ providedIn: 'root' })
export class IdentityProviderFactory {
private instance: IdentityProvider<unknown>;
private config: {
[key: string]: unknown;
type?: string;
};
constructor(private store: Store, private injector: Injector, private featureToggleService: FeatureToggleService) {
if (!SSR) {
this.store.pipe(select(getIdentityProvider), whenTruthy(), first()).subscribe(config => {
const provider = this.injector
.get<IdentityProviderImplementor[]>(IDENTITY_PROVIDER_IMPLEMENTOR, [])
.filter(p => (p.feature ? this.featureToggleService.enabled(p.feature) : true))
.find(p => p.type === config?.type);
if (!provider) {
console.error('did not find identity provider for config', config);
} else {
const instance = this.injector.get(provider.implementor);
/*
If the code is called synchronously, the init method can call other actions that can trigger http requests.
If an HTTP request is triggered before the identity provider constructor is finished, a "Null Pointer Exception" will be thrown in the identity-provider.interceptor.
A delay with setTimeout is added to mitigate this problem
*/
// TODO: Find a way to implement this without setTimeout()
setTimeout(() => {
instance.init(config);
}, 1);
this.instance = instance;
this.config = config;
}
});
} else {
this.instance = {
init: noop,
intercept: (req, next) => next.handle(req),
triggerLogin: () => true,
triggerLogout: () => true,
triggerInvite: () => true,
getCapabilities: () => ({}),
};
}
}
private logNoIdpError = once(() =>
console.error('No identity provider instance exists. Please double-check your configuration:', this.config)
);
getInstance() {
Iif (!this.instance) {
this.logNoIdpError();
}
return this.instance;
}
getType(): string {
return this.config?.type;
}
}
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