Firebase stub: new implementation in place

This commit is contained in:
gianantoniopini
2020-12-23 14:25:38 +01:00
parent 356ae08643
commit fb8dd6d986
4 changed files with 265 additions and 434 deletions

View File

@ -1,171 +1,302 @@
import path from 'path';
import fs from 'fs';
import { v4 as uuidv4 } from 'uuid';
const __testUser = {
email: 'test.user@noemail.com',
name: 'Test User',
uid: 'testuser123',
};
let __onAuthStateChangedObservers = [];
let __resumesDictionary = {};
let __databaseRefUpdateCalls = [];
class Auth {
static #instance = undefined;
#uuid = '';
#onAuthStateChangedObservers = [];
const auth = () => {
const __init = () => {
__onAuthStateChangedObservers = [];
};
constructor() {
if (Auth.#instance) {
return Auth.#instance;
}
const onAuthStateChanged = (observer) => {
__onAuthStateChangedObservers.push(observer);
Auth.#instance = this;
this.#uuid = uuidv4();
}
get uuid() {
return this.#uuid;
}
get onAuthStateChangedObservers() {
return this.#onAuthStateChangedObservers;
}
clearOnAuthStateChangedObservers() {
this.#onAuthStateChangedObservers = [];
}
onAuthStateChanged(observer) {
this.#onAuthStateChangedObservers.push(observer);
return () => {
__onAuthStateChangedObservers = __onAuthStateChangedObservers.filter(
this.#onAuthStateChangedObservers = this.#onAuthStateChangedObservers.filter(
(observer) => observer !== observer,
);
};
}
async signInAnonymously() {
this.#onAuthStateChangedObservers.forEach((observer) =>
observer(Database.testUser),
);
return Promise.resolve(Database.testUser);
}
}
class Database {
static testUser = {
email: 'test.user@noemail.com',
name: 'Test User',
uid: 'testuser123',
};
static resumesPath = 'resumes';
static usersPath = 'users';
static #instance = undefined;
#uuid = '';
#data = {};
#references = {};
const signInAnonymously = async () => {
__onAuthStateChangedObservers.forEach((observer) => observer(__testUser));
constructor() {
if (Database.#instance) {
return Database.#instance;
}
var result = await Promise.resolve(__testUser);
return result;
};
Database.#instance = this;
return {
__init,
onAuthStateChanged,
signInAnonymously,
};
};
this.#uuid = uuidv4();
}
const database = () => {
const __demoResumeId = 'demore';
const __emptyResumeId = 'mtre01';
get testUser() {
return Database.testUser;
}
const __init = () => {
__resumesDictionary = {};
__databaseRefUpdateCalls = [];
get demoResumeId() {
return 'demore';
}
get emptyResumeId() {
return 'mtre01';
}
const demoResume = __readFile('../src/data/demoState.json');
__resumesDictionary[__demoResumeId] = demoResume;
const emptyResume = __readFile('../src/data/initialState.json');
__resumesDictionary[__emptyResumeId] = emptyResume;
get uuid() {
return this.#uuid;
}
for (var key in __resumesDictionary) {
const resume = __resumesDictionary[key];
static readFile(fileRelativePath) {
const fileAbsolutePath = path.resolve(__dirname, fileRelativePath);
const fileBuffer = fs.readFileSync(fileAbsolutePath);
const fileData = JSON.parse(fileBuffer);
return fileData;
}
initializeData() {
const resumes = {};
const demoResume = Database.readFile('../src/data/demoState.json');
resumes[this.demoResumeId] = demoResume;
const emptyResume = Database.readFile('../src/data/initialState.json');
resumes[this.emptyResumeId] = emptyResume;
for (var key in resumes) {
const resume = resumes[key];
resume.id = key;
resume.name = `Test Resume ${key}`;
resume.user = __testUser.uid;
resume.user = this.testUser.uid;
let date = new Date('December 15, 2020 11:20:25');
resume.updatedAt = date.valueOf();
date.setMonth(date.getMonth() - 2);
resume.createdAt = date.valueOf();
}
};
const __readFile = (fileRelativePath) => {
const fileAbsolutePath = path.resolve(__dirname, fileRelativePath);
const fileBuffer = fs.readFileSync(fileAbsolutePath);
const fileData = JSON.parse(fileBuffer);
return fileData;
};
this.#data[Database.resumesPath] = resumes;
const ref = (path) => {
if (!path) {
throw new Error('Not implemented.');
const users = {};
users[this.testUser.uid] = this.testUser;
this.#data[Database.usersPath] = users;
}
ref(path) {
const newRef = new Reference(path, () => this.#data);
const existingRef = this.#references[newRef.path];
if (existingRef) {
return existingRef;
}
const resumesPath = path.startsWith('resumes/');
const usersPath = path.startsWith('users/');
if (!resumesPath && !usersPath) {
throw new Error('Unknown Reference path.');
this.#references[newRef.path] = newRef;
return newRef;
}
}
class Reference {
#rootPath = '.';
#path = '';
#uuid = '';
#dataSnapshots = {};
#getDatabaseData = () => null;
constructor(path, getDatabaseData) {
if (typeof path === 'undefined' || path === null) {
this.#path = this.#rootPath;
} else if (typeof path !== 'string') {
throw new Error('path should be a string.');
}
const databaseLocationId = path.substring(path.indexOf('/') + 1);
if (!databaseLocationId) {
throw new Error('Unknown database location id.');
if (!getDatabaseData) {
throw new Error('getDatabaseData must be provided.');
} else if (typeof getDatabaseData !== 'function') {
throw new Error('getDatabaseData should be a function.');
}
const once = async (eventType) => {
if (!eventType) {
throw new Error('Event type must be provided.');
this.#path = path;
this.#uuid = uuidv4();
this.#getDatabaseData = getDatabaseData;
}
get path() {
return this.#path;
}
get uuid() {
return this.#uuid;
}
getData() {
const databaseData = this.#getDatabaseData();
if (!databaseData) {
return null;
}
if (this.#path === this.#rootPath) {
return databaseData;
}
if (
this.#path === Database.resumesPath ||
this.#path === Database.usersPath
) {
return this.#path in databaseData ? databaseData[this.#path] : null;
}
if (
this.#path.startsWith(`${Database.resumesPath}/`) ||
this.#path.startsWith(`${Database.usersPath}/`)
) {
const databaseLocationId = this.#path.substring(
this.#path.indexOf('/') + 1,
);
if (!databaseLocationId) {
throw new Error('Unknown database location id.');
}
if (eventType !== 'value') {
throw new Error('Unknown event type.');
const pathWithoutId = this.#path.substring(0, this.#path.indexOf('/'));
if (pathWithoutId in databaseData) {
return databaseLocationId in databaseData[pathWithoutId]
? databaseData[pathWithoutId][databaseLocationId]
: null;
}
}
const val = () => {
if (resumesPath) {
return __resumesDictionary[databaseLocationId]
? __resumesDictionary[databaseLocationId]
: null;
}
return null;
}
if (usersPath) {
return __testUser;
}
async once(eventType) {
const newDataSnapshot = new DataSnapshot(eventType, this);
const existingDataSnapshot = this.#dataSnapshots[newDataSnapshot.eventType];
if (existingDataSnapshot) {
return Promise.resolve(existingDataSnapshot);
}
return null;
};
this.#dataSnapshots[newDataSnapshot.eventType] = newDataSnapshot;
return Promise.resolve(newDataSnapshot);
}
return Promise.resolve({ val });
};
async update(value) {
return Promise.resolve(true);
}
const set = (value) => {
if (resumesPath) {
if (value === null) {
delete __resumesDictionary[databaseLocationId];
} else {
__resumesDictionary[databaseLocationId] = value;
}
/*
const update = async (value) => {
if (resumesPath) {
if (value === null) {
delete __resumesDictionary[databaseLocationId];
} else {
__resumesDictionary[databaseLocationId] = value;
}
}
return Promise.resolve(true);
};
const update = async (value) => {
if (resumesPath) {
if (value === null) {
delete __resumesDictionary[databaseLocationId];
} else {
__resumesDictionary[databaseLocationId] = value;
}
}
__databaseRefUpdateCalls.push(value);
return Promise.resolve(true);
};
return {
once,
set,
update,
__updateCalls: __databaseRefUpdateCalls,
};
return Promise.resolve(true);
};
return {
__demoResumeId,
__emptyResumeId,
__init,
ref,
};
};
const set = (value) => {
if (resumesPath) {
if (value === null) {
delete __resumesDictionary[databaseLocationId];
} else {
__resumesDictionary[databaseLocationId] = value;
}
}
database.ServerValue = {};
Object.defineProperty(database.ServerValue, 'TIMESTAMP', {
return Promise.resolve(true);
};
*/
}
class DataSnapshot {
#eventType = '';
#reference = null;
constructor(eventType, reference) {
if (!eventType) {
throw new Error('eventType must be provided.');
} else if (typeof eventType !== 'string') {
throw new Error('eventType should be a string.');
}
this.#eventType = eventType;
if (!reference) {
throw new Error('reference must be provided.');
} else if (!(reference instanceof Reference)) {
throw new Error('reference must be an instance of the Reference class.');
}
this.#reference = reference;
}
get eventType() {
return this.#eventType;
}
val() {
if (this.eventType === 'value') {
return this.#reference.getData();
}
return undefined;
}
}
class FirebaseStub {
static auth() {
return new Auth();
}
static database() {
return new Database();
}
}
FirebaseStub.database.ServerValue = {};
Object.defineProperty(FirebaseStub.database.ServerValue, 'TIMESTAMP', {
get() {
return new Date().getTime();
},
});
export default class firebase {
static auth = auth;
static database = database;
}
export default FirebaseStub;