92 lines
2.2 KiB
JavaScript
92 lines
2.2 KiB
JavaScript
/**
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* @flow
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* Database representation wrapper
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*/
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import { NativeModules } from 'react-native';
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import Reference from './reference';
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import TransactionHandler from './transaction';
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import ModuleBase from './../../utils/ModuleBase';
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import type FirebaseApp from '../core/firebase-app';
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const NATIVE_EVENTS = [
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'database_transaction_event',
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// 'database_server_offset', // TODO
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];
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/**
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* @class Database
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*/
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export default class Database extends ModuleBase {
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static _NAMESPACE = 'database';
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static _NATIVE_MODULE = 'RNFirebaseDatabase';
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_offsetRef: Reference;
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_serverTimeOffset: number;
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_transactionHandler: TransactionHandler;
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constructor(firebaseApp: FirebaseApp, options: Object = {}) {
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super(firebaseApp, options, NATIVE_EVENTS);
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this._transactionHandler = new TransactionHandler(this);
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if (this._options.persistence) {
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this._native.setPersistence(this._options.persistence);
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}
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// server time listener
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// setTimeout used to avoid setPersistence race conditions
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// todo move this and persistence to native side, create a db configure() method natively perhaps?
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// todo and then native can call setPersistence and then emit offset events
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setTimeout(() => {
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this._serverTimeOffset = 0;
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this._offsetRef = this.ref('.info/serverTimeOffset');
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this._offsetRef.on('value', (snapshot) => {
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this._serverTimeOffset = snapshot.val() || this._serverTimeOffset;
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});
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}, 1);
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}
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/**
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*
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* @return {number}
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*/
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getServerTime(): number {
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return new Date(Date.now() + this._serverTimeOffset);
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}
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/**
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*
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*/
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goOnline(): void {
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this._native.goOnline();
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}
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/**
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*
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*/
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goOffline(): void {
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this._native.goOffline();
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}
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/**
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* Returns a new firebase reference instance
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* @param path
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* @returns {Reference}
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*/
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ref(path: string): Reference {
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return new Reference(this, path);
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}
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}
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export const statics = {
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ServerValue: NativeModules.RNFirebaseDatabase ? {
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TIMESTAMP: NativeModules.RNFirebaseDatabase.serverValueTimestamp || { '.sv': 'timestamp' },
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} : {},
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enableLogging(enabled: boolean) {
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if (NativeModules[Database._NATIVE_MODULE]) {
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NativeModules[Database._NATIVE_MODULE].enableLogging(enabled);
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}
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},
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};
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