simplyfire
Version:
A lightweight firestore api for firebase cloud functions & Angular.
273 lines • 42.9 kB
JavaScript
import { Injectable } from '@angular/core';
import { getFirestore, doc, docData, addDoc, setDoc, updateDoc, deleteDoc, collection, collectionData, collectionGroup, collectionChanges, getDocs, increment, writeBatch, serverTimestamp, query, where, orderBy, limit, limitToLast, startAt, startAfter, endAt, endBefore, runTransaction, documentId } from '@angular/fire/firestore';
import { combineLatest, defer, lastValueFrom, of } from 'rxjs';
import { map, switchMap, take } from 'rxjs/operators';
import { QueryBuilder, AbstractFirestoreApi } from '../db';
import { arrayToChunks } from '../utils';
import * as i0 from "@angular/core";
const queryOps = {
query,
where,
orderBy,
limit,
limitToLast,
startAt,
startAfter,
endAt,
endBefore
};
const CACHE_MAX_AGE = 5 * 60 * 1000;
export class FirestoreService extends AbstractFirestoreApi {
constructor() {
super(...arguments);
this.cache = new Map();
}
get firestore() {
return getFirestore();
}
// -----------------------------------------------------------------------------------------------------
// @ Abstract members
// -----------------------------------------------------------------------------------------------------
collection(path, qb, maxAge = CACHE_MAX_AGE) {
return lastValueFrom(this.collectionWithCache(path, qb, maxAge).pipe(take(1)));
}
collectionGroup(collectionId, qb, maxAge = CACHE_MAX_AGE) {
return lastValueFrom(this.collectionGroupWithCache(collectionId, qb, maxAge).pipe(take(1)));
}
doc(path, maxAge = CACHE_MAX_AGE) {
return lastValueFrom(this.docWithCache(path, maxAge).pipe(take(1)));
}
docRef(path) {
return doc(this.firestore, path);
}
async upsert(collectionPath, data, opts = { merge: true }) {
const timestamp = this.serverTimestamp;
let { id, ...updata } = data;
updata.createdTs ?? (updata.createdTs = timestamp);
updata.updatedTs = timestamp;
if (id) {
await setDoc(this.docRef(`${collectionPath}/${id}`), Object.assign({}, updata), opts);
}
else {
id = (await addDoc(collection(this.firestore, collectionPath), updata)).id;
}
return id;
}
update(docPath, data) {
const updatedTs = this.serverTimestamp;
// ignore id
delete data['id'];
return updateDoc(this.docRef(docPath), Object.assign({}, data, { updatedTs }));
}
delete(docPath) {
return deleteDoc(this.docRef(docPath));
}
async bulkUpsert(path, data, opts = { merge: true }) {
const bulkIds = [];
const promises = [];
if (Array.isArray(data)) {
// Due to a batch limitation, need to split docs array into chunks
for (const chunks of arrayToChunks(data, this.BATCH_MAX_WRITES)) {
const batch = this.batch;
const timestamp = this.serverTimestamp;
chunks.forEach(async ({ id, ...updata }) => {
updata.createdTs ?? (updata.createdTs = timestamp);
updata.updatedTs = timestamp;
let docRef;
if (id) {
docRef = this.docRef(`${path}/${id}`);
}
else {
docRef = doc(collection(this.firestore, path));
}
bulkIds.push(docRef.id);
batch.set(docRef, updata, opts);
});
const p = batch.commit();
promises.push(p);
}
}
else {
const snapshot = await this.collectionSnapshot(path, data.qb);
// Due to a batch limitation, need to split docs array into chunks
for (const chunks of arrayToChunks(snapshot.docs, this.BATCH_MAX_WRITES)) {
const batch = this.batch;
const timestamp = this.serverTimestamp;
chunks.forEach((d) => batch.set(d.ref, { updatedTs: timestamp, ...data.data }, opts) && bulkIds.push(d.id));
const p = batch.commit();
promises.push(p);
}
}
await Promise.all(promises);
return bulkIds;
}
async bulkDelete(path, qb, maxSize = 1000) {
qb ?? (qb = new QueryBuilder());
qb.limit(maxSize);
const bulkIds = [];
const promises = [];
const snapshot = await this.collectionSnapshot(path, qb);
// Due to a batch limitation, need to split docs array into chunks
for (const chunks of arrayToChunks(snapshot.docs, this.BATCH_MAX_WRITES)) {
const batch = this.batch;
chunks.forEach((d) => batch.delete(d.ref) && bulkIds.push(d.id));
const p = batch.commit();
promises.push(p);
}
await Promise.all(promises);
return bulkIds;
}
/**
* write batch
*/
get batch() {
return writeBatch(this.firestore);
}
/**
* firestore timestamp
*/
get serverTimestamp() {
return serverTimestamp();
}
/**
* FieldValue increment
*/
increment(n = 1) {
return increment(n);
}
/**
* Returns a generated Firestore Document Id.
*/
createId(colPath) {
return doc(collection(this.firestore, colPath ?? '_')).id;
}
runTransaction(updateFunction) {
return runTransaction(this.firestore, updateFunction);
}
// -----------------------------------------------------------------------------------------------------
// @ Custom methods
// -----------------------------------------------------------------------------------------------------
collectionValueChanges(path, qb) {
const collectionRef = collection(this.firestore, path);
qb ?? (qb = new QueryBuilder());
return collectionData(qb.exec(collectionRef, queryOps), { idField: 'id' }).pipe((s) => (qb?.joins ?? []).map((j) => leftJoin(this, ...j)).reduce((ss, o) => o(ss), s));
}
collectionGroupValueChanges(collectionId, qb) {
const collectionRef = collectionGroup(this.firestore, collectionId);
qb ?? (qb = new QueryBuilder());
return collectionData(qb.exec(collectionRef, queryOps), { idField: 'id' }).pipe((s) => (qb?.joins ?? []).map((j) => leftJoin(this, ...j)).reduce((ss, o) => o(ss), s));
}
collectionSnapshot(path, qb) {
qb ?? (qb = new QueryBuilder());
const collectionRef = collection(this.firestore, path);
return getDocs(qb.exec(collectionRef, queryOps));
}
collectionSnapshotChanges(path, qb, events) {
const collectionRef = collection(this.firestore, path);
qb ?? (qb = new QueryBuilder());
return collectionChanges(qb.exec(collectionRef, queryOps), { events }).pipe(map((changes) => changes.map((c) => Object.assign({}, c.doc.data(), { id: c.doc.id }))), (s) => (qb?.joins ?? []).map((j) => leftJoin(this, ...j)).reduce((ss, o) => o(ss), s));
}
collectionGroupSnapshotChanges(collectionId, qb, events) {
const collectionRef = collectionGroup(this.firestore, collectionId);
qb ?? (qb = new QueryBuilder());
return collectionChanges(qb.exec(collectionRef, queryOps), { events }).pipe(map((changes) => changes.map((c) => Object.assign({}, c.doc.data(), { id: c.doc.id }))), (s) => (qb?.joins ?? []).map((j) => leftJoin(this, ...j)).reduce((ss, o) => o(ss), s));
}
docValueChanges(path) {
const docRef = doc(this.firestore, path);
return docData(docRef, { idField: 'id' });
}
/**
* @experimental
*
* Cache collection data in memory
*/
collectionWithCache(path, qb, maxAge) {
return this.fetchFromCache(path + (qb ? JSON.stringify(qb) : ''), this.collectionValueChanges(path, qb), maxAge);
}
/**
* @experimental
*
* Cache collectionGroup data in memory
*/
collectionGroupWithCache(collectionId, qb, maxAge) {
return this.fetchFromCache(collectionId + (qb ? JSON.stringify(qb) : ''), this.collectionGroupValueChanges(collectionId, qb), maxAge);
}
/**
* @experimental
*
* Cache document data in memory
*/
docWithCache(path, maxAge) {
return this.fetchFromCache(path, this.docValueChanges(path), maxAge);
}
/**
* @experimental
*
* Delete cached data from the memory
*/
deleteCache(path, qb) {
const key = path + (qb ? JSON.stringify(qb) : '');
return this.cache.delete(key);
}
fetchFromCache(key, source, maxAge) {
const cached = this.cache.get(key);
if (maxAge === 0 || !cached || (maxAge && Date.now() - cached.lastRead > maxAge)) {
return source.pipe(map((data) => this.cache.set(key, { lastRead: Date.now(), data }) && data));
}
return of(cached.data);
}
}
FirestoreService.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.0.0", ngImport: i0, type: FirestoreService, deps: null, target: i0.ɵɵFactoryTarget.Injectable });
FirestoreService.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "14.0.0", ngImport: i0, type: FirestoreService, providedIn: 'root' });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.0.0", ngImport: i0, type: FirestoreService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root'
}]
}] });
const leftJoin = (fs, key, collection, alias, maxAge) => {
if (key === alias) {
throw Error('Due to use of Cache, you must use different alias for a key.');
}
return (source) => defer(() => {
let ret;
return source.pipe(switchMap((data) => {
ret = data;
const fetchJoinData = (id) => {
if (Array.isArray(id)) {
const qb = new QueryBuilder();
qb.where(documentId(), 'in', id);
return fs.collectionWithCache(collection, qb, maxAge);
}
return fs.docWithCache(`${collection}/${id}`, maxAge);
};
if (Array.isArray(data)) {
const docs$ = ret.filter((i) => i[key]).map((i) => fetchJoinData(i[key]));
return docs$.length ? combineLatest(docs$) : of([]);
}
return data && data[key] ? fetchJoinData(data[key]) : of(null);
}), map((joins) => {
if (Array.isArray(ret)) {
return ret.map((r) => {
const id = r[key];
if (id) {
if (Array.isArray(id)) {
r[alias] = joins
.filter((j) => Array.isArray(j) && JSON.stringify(j.map((jj) => jj.id).sort()) === JSON.stringify(id.sort()))
.pop();
}
else {
r[alias] = joins.filter((j) => j?.id === id).pop();
}
}
return r;
});
}
if (ret) {
ret[alias] = joins;
}
return ret;
}));
});
};
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{ Injectable } from '@angular/core';\nimport {\n  getFirestore,\n  doc,\n  docData,\n  addDoc,\n  setDoc,\n  updateDoc,\n  deleteDoc,\n  collection,\n  collectionData,\n  collectionGroup,\n  collectionChanges,\n  getDocs,\n  increment,\n  writeBatch,\n  serverTimestamp,\n  query,\n  where,\n  orderBy,\n  limit,\n  limitToLast,\n  startAt,\n  startAfter,\n  endAt,\n  endBefore,\n  runTransaction,\n  documentId\n} from '@angular/fire/firestore';\nimport type {\n  Firestore,\n  DocumentChangeType,\n  DocumentData,\n  QuerySnapshot,\n  SetOptions,\n  Transaction\n} from '@angular/fire/firestore';\n\nimport { combineLatest, defer, lastValueFrom, Observable, of } from 'rxjs';\nimport { map, switchMap, take } from 'rxjs/operators';\n\nimport { QueryBuilder, AbstractFirestoreApi } from '../db';\nimport { arrayToChunks } from '../utils';\n\nconst queryOps = {\n  query,\n  where,\n  orderBy,\n  limit,\n  limitToLast,\n  startAt,\n  startAfter,\n  endAt,\n  endBefore\n};\n\nconst CACHE_MAX_AGE = 5 * 60 * 1000;\n\n@Injectable({\n  providedIn: 'root'\n})\nexport class FirestoreService extends AbstractFirestoreApi {\n  get firestore(): Firestore {\n    return getFirestore();\n  }\n\n  private cache = new Map<string, any>();\n\n  // -----------------------------------------------------------------------------------------------------\n  // @ Abstract members\n  // -----------------------------------------------------------------------------------------------------\n\n  collection<T = any>(path: string, qb?: QueryBuilder, maxAge = CACHE_MAX_AGE): Promise<T[]> {\n    return lastValueFrom(this.collectionWithCache(path, qb, maxAge).pipe(take(1)));\n  }\n\n  collectionGroup<T = any>(collectionId: string, qb?: QueryBuilder, maxAge = CACHE_MAX_AGE): Promise<T[]> {\n    return lastValueFrom(this.collectionGroupWithCache(collectionId, qb, maxAge).pipe(take(1)));\n  }\n\n  doc<T = any>(path: string, maxAge = CACHE_MAX_AGE): Promise<T> {\n    return lastValueFrom(this.docWithCache(path, maxAge).pipe(take(1)));\n  }\n\n  docRef(path: string) {\n    return doc(this.firestore, path) as any;\n  }\n\n  async upsert(\n    collectionPath: string,\n    data: { [key: string]: any },\n    opts: SetOptions = { merge: true }\n  ): Promise<string> {\n    const timestamp = this.serverTimestamp;\n\n    let { id, ...updata } = data;\n    updata.createdTs ??= timestamp;\n    updata.updatedTs = timestamp;\n\n    if (id) {\n      await setDoc(this.docRef(`${collectionPath}/${id}`), Object.assign({}, updata), opts);\n    } else {\n      id = (await addDoc(collection(this.firestore, collectionPath), updata)).id;\n    }\n\n    return id;\n  }\n\n  update(docPath: string, data: { [key: string]: any }) {\n    const updatedTs = this.serverTimestamp;\n\n    // ignore id\n    delete data['id'];\n\n    return updateDoc(this.docRef(docPath), Object.assign({}, data, { updatedTs }));\n  }\n\n  delete(docPath: string) {\n    return deleteDoc(this.docRef(docPath));\n  }\n\n  async bulkUpsert(\n    path: string,\n    data: DocumentData[] | { data: DocumentData; qb?: QueryBuilder },\n    opts: SetOptions = { merge: true }\n  ): Promise<string[]> {\n    const bulkIds = [];\n    const promises = [];\n\n    if (Array.isArray(data)) {\n      // Due to a batch limitation, need to split docs array into chunks\n      for (const chunks of arrayToChunks(data, this.BATCH_MAX_WRITES)) {\n        const batch = this.batch;\n        const timestamp = this.serverTimestamp;\n\n        chunks.forEach(async ({ id, ...updata }) => {\n          updata.createdTs ??= timestamp;\n          updata.updatedTs = timestamp;\n\n          let docRef: any;\n\n          if (id) {\n            docRef = this.docRef(`${path}/${id}`);\n          } else {\n            docRef = doc(collection(this.firestore, path));\n          }\n\n          bulkIds.push(docRef.id);\n          batch.set(docRef, updata, opts);\n        });\n\n        const p = batch.commit();\n        promises.push(p);\n      }\n    } else {\n      const snapshot = await this.collectionSnapshot(path, data.qb);\n\n      // Due to a batch limitation, need to split docs array into chunks\n      for (const chunks of arrayToChunks(snapshot.docs, this.BATCH_MAX_WRITES)) {\n        const batch = this.batch;\n        const timestamp = this.serverTimestamp;\n\n        chunks.forEach((d) => batch.set(d.ref, { updatedTs: timestamp, ...data.data }, opts) && bulkIds.push(d.id));\n\n        const p = batch.commit();\n        promises.push(p);\n      }\n    }\n\n    await Promise.all(promises);\n\n    return bulkIds;\n  }\n\n  async bulkDelete(path: string, qb?: QueryBuilder, maxSize = 1000): Promise<string[]> {\n    qb ??= new QueryBuilder();\n    qb.limit(maxSize);\n\n    const bulkIds = [];\n    const promises = [];\n\n    const snapshot: QuerySnapshot<DocumentData> = await this.collectionSnapshot(path, qb);\n\n    // Due to a batch limitation, need to split docs array into chunks\n    for (const chunks of arrayToChunks(snapshot.docs, this.BATCH_MAX_WRITES)) {\n      const batch = this.batch;\n\n      chunks.forEach((d) => batch.delete(d.ref) && bulkIds.push(d.id));\n      const p = batch.commit();\n      promises.push(p);\n    }\n\n    await Promise.all(promises);\n\n    return bulkIds;\n  }\n\n  /**\n   * write batch\n   */\n  get batch() {\n    return writeBatch(this.firestore) as any;\n  }\n\n  /**\n   * firestore timestamp\n   */\n  get serverTimestamp() {\n    return serverTimestamp();\n  }\n\n  /**\n   * FieldValue increment\n   */\n  increment(n = 1) {\n    return increment(n);\n  }\n\n  /**\n   * Returns a generated Firestore Document Id.\n   */\n  createId(colPath?: string) {\n    return doc(collection(this.firestore, colPath ?? '_')).id;\n  }\n\n  runTransaction(updateFunction: (transaction: Transaction | any) => Promise<unknown>): Promise<unknown> {\n    return runTransaction(this.firestore, updateFunction);\n  }\n\n  // -----------------------------------------------------------------------------------------------------\n  // @ Custom methods\n  // -----------------------------------------------------------------------------------------------------\n\n  collectionValueChanges<T = any>(path: string, qb?: QueryBuilder): Observable<T[]> {\n    const collectionRef = collection(this.firestore, path);\n    qb ??= new QueryBuilder();\n\n    return collectionData(qb.exec(collectionRef, queryOps), { idField: 'id' }).pipe((s) =>\n      (qb?.joins ?? []).map((j) => leftJoin(this, ...j)).reduce((ss, o) => o(ss), s)\n    );\n  }\n\n  collectionGroupValueChanges<T = any>(collectionId: string, qb?: QueryBuilder): Observable<T[]> {\n    const collectionRef = collectionGroup(this.firestore, collectionId);\n    qb ??= new QueryBuilder();\n\n    return collectionData(qb.exec(collectionRef, queryOps), { idField: 'id' }).pipe((s) =>\n      (qb?.joins ?? []).map((j) => leftJoin(this, ...j)).reduce((ss, o) => o(ss), s)\n    );\n  }\n\n  collectionSnapshot(path: string, qb?: QueryBuilder): Promise<QuerySnapshot<any> | any> {\n    qb ??= new QueryBuilder();\n\n    const collectionRef = collection(this.firestore, path);\n    return getDocs(qb.exec(collectionRef, queryOps));\n  }\n\n  collectionSnapshotChanges<T = any>(path: string, qb?: QueryBuilder, events?: DocumentChangeType[]): Observable<T[]> {\n    const collectionRef: any = collection(this.firestore, path);\n    qb ??= new QueryBuilder();\n\n    return collectionChanges(qb.exec(collectionRef, queryOps), { events }).pipe(\n      map((changes) => changes.map((c) => Object.assign({}, c.doc.data(), { id: c.doc.id } as any))),\n      (s) => (qb?.joins ?? []).map((j) => leftJoin(this, ...j)).reduce((ss, o) => o(ss), s)\n    );\n  }\n\n  collectionGroupSnapshotChanges<T = any>(\n    collectionId: string,\n    qb?: QueryBuilder,\n    events?: DocumentChangeType[]\n  ): Observable<T[]> {\n    const collectionRef: any = collectionGroup(this.firestore, collectionId);\n    qb ??= new QueryBuilder();\n\n    return collectionChanges(qb.exec(collectionRef, queryOps), { events }).pipe(\n      map((changes) => changes.map((c) => Object.assign({}, c.doc.data(), { id: c.doc.id } as any))),\n      (s) => (qb?.joins ?? []).map((j) => leftJoin(this, ...j)).reduce((ss, o) => o(ss), s)\n    );\n  }\n\n  docValueChanges<T = any>(path: string): Observable<T> {\n    const docRef: any = doc(this.firestore, path);\n    return docData<T>(docRef, { idField: 'id' });\n  }\n\n  /**\n   * @experimental\n   *\n   * Cache collection data in memory\n   */\n  collectionWithCache<T = any>(path: string, qb?: QueryBuilder, maxAge?: number): Observable<T[]> {\n    return this.fetchFromCache(path + (qb ? JSON.stringify(qb) : ''), this.collectionValueChanges<T>(path, qb), maxAge);\n  }\n\n  /**\n   * @experimental\n   *\n   * Cache collectionGroup data in memory\n   */\n  collectionGroupWithCache<T = any>(collectionId: string, qb?: QueryBuilder, maxAge?: number): Observable<T[]> {\n    return this.fetchFromCache(\n      collectionId + (qb ? JSON.stringify(qb) : ''),\n      this.collectionGroupValueChanges<T>(collectionId, qb),\n      maxAge\n    );\n  }\n\n  /**\n   * @experimental\n   *\n   * Cache document data in memory\n   */\n  docWithCache(path: string, maxAge?: number) {\n    return this.fetchFromCache(path, this.docValueChanges(path), maxAge);\n  }\n\n  /**\n   * @experimental\n   *\n   * Delete cached data from the memory\n   */\n  deleteCache(path: string, qb?: QueryBuilder) {\n    const key = path + (qb ? JSON.stringify(qb) : '');\n    return this.cache.delete(key);\n  }\n\n  private fetchFromCache(key: string, source: Observable<any>, maxAge: number) {\n    const cached = this.cache.get(key);\n\n    if (maxAge === 0 || !cached || (maxAge && Date.now() - cached.lastRead > maxAge)) {\n      return source.pipe(map((data) => this.cache.set(key, { lastRead: Date.now(), data }) && data));\n    }\n\n    return of(cached.data);\n  }\n}\n\nconst leftJoin = (fs: FirestoreService, key: string, collection: string, alias: string, maxAge?: number) => {\n  if (key === alias) {\n    throw Error('Due to use of Cache, you must use different alias for a key.');\n  }\n\n  return (source: Observable<any | any[]>) =>\n    defer(() => {\n      let ret: any;\n\n      return source.pipe(\n        switchMap((data) => {\n          ret = data;\n\n          const fetchJoinData = (id: string | string[]) => {\n            if (Array.isArray(id)) {\n              const qb = new QueryBuilder();\n              qb.where(documentId(), 'in', id);\n              return fs.collectionWithCache(collection, qb, maxAge);\n            }\n\n            return fs.docWithCache(`${collection}/${id}`, maxAge);\n          };\n\n          if (Array.isArray(data)) {\n            const docs$ = (ret as any[]).filter((i) => i[key]).map((i) => fetchJoinData(i[key]));\n            return docs$.length ? combineLatest(docs$) : of([]);\n          }\n\n          return data && data[key] ? fetchJoinData(data[key]) : of(null);\n        }),\n        map((joins) => {\n          if (Array.isArray(ret)) {\n            return ret.map((r) => {\n              const id = r[key];\n              if (id) {\n                if (Array.isArray(id)) {\n                  r[alias] = joins\n                    .filter(\n                      (j: any) =>\n                        Array.isArray(j) && JSON.stringify(j.map((jj) => jj.id).sort()) === JSON.stringify(id.sort())\n                    )\n                    .pop();\n                } else {\n                  r[alias] = joins.filter((j: any) => j?.id === id).pop();\n                }\n              }\n\n              return r;\n            });\n          }\n\n          if (ret) {\n            ret[alias] = joins;\n          }\n\n          return ret;\n        })\n      );\n    });\n};\n"]}