Add get user cache for comments

1 files changed, 12 insertions, 2 deletions

diff --git a/client/src/app/shared/users/user.service.ts b/client/src/app/shared/users/user.service.ts
index 051e0bfa4..e24d91df3 100644
--- a/client/src/app/shared/users/user.service.ts
+++ b/client/src/app/shared/users/user.service.ts
@@ -1,5 +1,5 @@
-import { from, Observable } from 'rxjs'
-import { catchError, concatMap, map, toArray } from 'rxjs/operators'
+import { from, Observable, of } from 'rxjs'
+import { catchError, concatMap, map, share, shareReplay, tap, toArray } from 'rxjs/operators'
 import { HttpClient, HttpParams } from '@angular/common/http'
 import { Injectable } from '@angular/core'
 import { ResultList, User, UserCreate, UserRole, UserUpdate, UserUpdateMe, UserVideoQuota } from '../../../../../shared'
@@ -17,6 +17,8 @@ export class UserService {
 
   private bytesPipe = new BytesPipe()
 
+  private userCache: { [ id: number ]: Observable<User> } = {}
+
   constructor (
     private authHttp: HttpClient,
     private restExtractor: RestExtractor,
@@ -194,6 +196,14 @@ export class UserService {
       )
   }
 
+  getUserWithCache (userId: number) {
+    if (!this.userCache[userId]) {
+      this.userCache[ userId ] = this.getUser(userId).pipe(shareReplay())
+    }
+
+    return this.userCache[userId]
+  }
+
   getUser (userId: number) {
     return this.authHttp.get<User>(UserService.BASE_USERS_URL + userId)
                .pipe(catchError(err => this.restExtractor.handleError(err)))