97 lines
2.3 KiB
JavaScript
97 lines
2.3 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 { getNativeModule } from '../../utils/native';
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import type App 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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export const MODULE_NAME = 'RNFirebaseDatabase';
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export const NAMESPACE = 'database';
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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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_offsetRef: Reference;
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_serverTimeOffset: number;
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_transactionHandler: TransactionHandler;
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constructor(app: App, options: Object = {}) {
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super(app, {
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events: NATIVE_EVENTS,
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moduleName: MODULE_NAME,
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namespace: NAMESPACE,
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});
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this._transactionHandler = new TransactionHandler(this);
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if (options.persistence) {
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getNativeModule(this).setPersistence(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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getNativeModule(this).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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getNativeModule(this).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[MODULE_NAME]) {
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NativeModules[MODULE_NAME].enableLogging(enabled);
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}
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},
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};
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