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database.ts
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import { Inject, Injectable, InjectionToken, NgZone, Optional, PLATFORM_ID } from '@angular/core';
import { AngularFireList, AngularFireObject, DatabaseQuery, PathReference, QueryFn } from './interfaces';
import { getRef } from './utils';
import { createListReference } from './list/create-reference';
import { createObjectReference } from './object/create-reference';
import {
FIREBASE_APP_NAME,
FIREBASE_OPTIONS,
FirebaseAppConfig,
FirebaseOptions,
ɵAngularFireSchedulers,
ɵfirebaseAppFactory,
ɵkeepUnstableUntilFirstFactory,
} from '@angular/fire';
import { Observable } from 'rxjs';
import 'firebase/database';
import { USE_EMULATOR as USE_AUTH_EMULATOR } from '@angular/fire/auth';
import firebase from 'firebase/app';
import { ɵfetchInstance, ɵlogAuthEmulatorError } from '@angular/fire';
export const URL = new InjectionToken<string>('angularfire2.realtimeDatabaseURL');
// SEMVER(7): use Parameters to detirmine the useEmulator arguments
// TODO(jamesdaniels): don't hardcode, but having tyepscript issues with firebase.database.Database
// type UseEmulatorArguments = Parameters<typeof firebase.database.Database.prototype.useEmulator>;
type UseEmulatorArguments = [string, number];
export const USE_EMULATOR = new InjectionToken<UseEmulatorArguments>('angularfire2.database.use-emulator');
@Injectable({
providedIn: 'any'
})
export class AngularFireDatabase {
public readonly database: firebase.database.Database;
public readonly schedulers: ɵAngularFireSchedulers;
public readonly keepUnstableUntilFirst: <T>(obs$: Observable<T>) => Observable<T>;
constructor(
@Inject(FIREBASE_OPTIONS) options: FirebaseOptions,
@Optional() @Inject(FIREBASE_APP_NAME) nameOrConfig: string | FirebaseAppConfig | null | undefined,
@Optional() @Inject(URL) databaseURL: string | null,
// tslint:disable-next-line:ban-types
@Inject(PLATFORM_ID) platformId: Object,
zone: NgZone,
@Optional() @Inject(USE_EMULATOR) _useEmulator: any, // tuple isn't working here
@Optional() @Inject(USE_AUTH_EMULATOR) useAuthEmulator: any,
) {
this.schedulers = new ɵAngularFireSchedulers(zone);
this.keepUnstableUntilFirst = ɵkeepUnstableUntilFirstFactory(this.schedulers);
const useEmulator: UseEmulatorArguments | null = _useEmulator;
const app = ɵfirebaseAppFactory(options, zone, nameOrConfig);
if (!firebase.auth && useAuthEmulator) {
ɵlogAuthEmulatorError();
}
this.database = ɵfetchInstance(`${app.name}.database.${databaseURL}`, 'AngularFireDatabase', app, () => {
const database = zone.runOutsideAngular(() => app.database(databaseURL || undefined));
if (useEmulator) {
database.useEmulator(...useEmulator);
}
return database;
}, [useEmulator]);
}
list<T>(pathOrRef: PathReference, queryFn?: QueryFn): AngularFireList<T> {
const ref = this.schedulers.ngZone.runOutsideAngular(() => getRef(this.database, pathOrRef));
let query: DatabaseQuery = ref;
if (queryFn) {
query = queryFn(ref);
}
return createListReference<T>(query, this);
}
object<T>(pathOrRef: PathReference): AngularFireObject<T> {
const ref = this.schedulers.ngZone.runOutsideAngular(() => getRef(this.database, pathOrRef));
return createObjectReference<T>(ref, this);
}
createPushId() {
const ref = this.schedulers.ngZone.runOutsideAngular(() => this.database.ref());
return ref.push().key;
}
}
export {
PathReference,
DatabaseSnapshot,
ChildEvent,
ListenEvent,
QueryFn,
AngularFireList,
AngularFireObject,
AngularFireAction,
Action,
SnapshotAction
} from './interfaces';