UI: Added multiple-file-input; Add support load multiple resource

ui-ngx/src/app/core/http/resource.service.ts

@@ -18,10 +18,10 @@ import { Injectable } from '@angular/core';
 import { HttpClient } from '@angular/common/http';
 import { PageLink } from '@shared/models/page/page-link';
 import { defaultHttpOptionsFromConfig, RequestConfig } from '@core/http/http-utils';
-import { Observable } from 'rxjs';
+import { forkJoin, Observable, of } from 'rxjs';
 import { PageData } from '@shared/models/page/page-data';
 import { Resource, ResourceInfo } from '@shared/models/resource.models';
-import { map } from 'rxjs/operators';
+import { catchError, map, mergeMap } from 'rxjs/operators';
 
 @Injectable({
   providedIn: 'root'
@@ -70,6 +70,25 @@ export class ResourceService {
     );
   }
 
+  public saveResources(resources: Resource[], config?: RequestConfig) {
+    let partSize = 100;
+    partSize = resources.length > partSize ? partSize : resources.length;
+    const resourceObservables = [];
+    for (let i = 0; i < partSize; i++) {
+      resourceObservables.push(this.saveResource(resources[i], config).pipe(catchError(error => of(error))));
+    }
+    return forkJoin(resourceObservables).pipe(
+      mergeMap((resource) => {
+        resources.splice(0, partSize);
+        if (resources.length) {
+          return this.saveResources(resources, config);
+        } else {
+          return of(resource);
+        }
+      })
+    );
+  }
+
   public saveResource(resource: Resource, config?: RequestConfig): Observable<Resource> {
     return this.http.post<Resource>('/api/resource', resource, defaultHttpOptionsFromConfig(config));
   }

ui-ngx/src/app/modules/home/pages/resource/resources-library-table-config.resolve.ts

@@ -85,10 +85,27 @@ export class ResourcesLibraryTableConfigResolver implements Resolve<EntityTableC
 
     this.config.entitiesFetchFunction = pageLink => this.resourceService.getResources(pageLink) as Observable<PageData<Resource>>;
     this.config.loadEntity = id => this.resourceService.getResource(id.id);
-    this.config.saveEntity = resource => this.resourceService.saveResource(resource);
+    this.config.saveEntity = resource => this.saveResource(resource);
     this.config.deleteEntity = id => this.resourceService.deleteResource(id.id);
   }
 
+  saveResource(resource) {
+    if (Array.isArray(resource.data)) {
+      const resources = [];
+      resource.data.forEach((data, index) => {
+        resources.push({
+          resourceType: resource.resourceType,
+          data,
+          fileName: resource.fileName[index],
+          title: resource.title
+        });
+      });
+      return this.resourceService.saveResources(resources, {resendRequest: true});
+    } else {
+      return this.resourceService.saveResource(resource);
+    }
+  }
+
   resolve(): EntityTableConfig<Resource> {
     this.config.tableTitle = this.translate.instant('resource.resources-library');
     const authUser = getCurrentAuthUser(this.store);

ui-ngx/src/app/modules/home/pages/resource/resources-library.component.html

@@ -44,9 +44,11 @@
       <tb-file-input
         formControlName="data"
         required
-        [convertToBase64]="true"
+        [readAsBinary]="true"
         [allowedExtensions]="getAllowedExtensions()"
+        [contentConvertFunction]="convertToBase64File"
         [accept]="getAcceptType()"
+        [multipleFile]="entityForm.get('resourceType').value === resourceType.LWM2M_MODEL"
         dropLabel="{{'resource.drop-file' | translate}}"
         [existingFileName]="entityForm.get('fileName')?.value"
         (fileNameChanged)="entityForm?.get('fileName').patchValue($event)">

ui-ngx/src/app/modules/home/pages/resource/resources-library.component.ts

@@ -29,7 +29,7 @@ import {
   ResourceTypeMIMETypes,
   ResourceTypeTranslationMap
 } from '@shared/models/resource.models';
-import { distinctUntilChanged, takeUntil } from 'rxjs/operators';
+import { pairwise, startWith, takeUntil } from 'rxjs/operators';
 
 @Component({
   selector: 'tb-resources-library',
@@ -54,15 +54,22 @@ export class ResourcesLibraryComponent extends EntityComponent<Resource> impleme
   ngOnInit() {
     super.ngOnInit();
     this.entityForm.get('resourceType').valueChanges.pipe(
-      distinctUntilChanged((oldValue, newValue) => [oldValue, newValue].includes(this.resourceType.LWM2M_MODEL)),
+      startWith(ResourceType.LWM2M_MODEL),
+      pairwise(),
       takeUntil(this.destroy$)
-    ).subscribe((type) => {
+    ).subscribe(([previousType, type]) => {
+      if (previousType === this.resourceType.LWM2M_MODEL) {
+        this.entityForm.get('title').setValidators(Validators.required);
+        this.entityForm.get('title').updateValueAndValidity({emitEvent: false});
+      }
       if (type === this.resourceType.LWM2M_MODEL) {
         this.entityForm.get('title').clearValidators();
-      } else {
+        this.entityForm.get('title').updateValueAndValidity({emitEvent: false});
-        this.entityForm.get('title').setValidators(Validators.required);
       }
-      this.entityForm.get('title').updateValueAndValidity({emitEvent: false});
+      this.entityForm.patchValue({
+        data: null,
+        fileName: null
+      }, {emitEvent: false});
     });
   }
 
@@ -119,4 +126,8 @@ export class ResourcesLibraryComponent extends EntityComponent<Resource> impleme
       return '*/*';
     }
   }
+
+  convertToBase64File(data: string): string {
+    return window.btoa(data);
+  }
 }

ui-ngx/src/app/shared/components/file-input.component.html

@@ -18,7 +18,7 @@
 <div class="tb-container">
   <label class="tb-title">{{ label }}</label>
   <ng-container #flow="flow"
-                [flowConfig]="{singleFile: true, allowDuplicateUploads: true}">
+                [flowConfig]="{allowDuplicateUploads: true}">
     <div class="tb-file-select-container">
       <div class="tb-file-clear-container">
         <button mat-button mat-icon-button color="primary"
@@ -34,7 +34,7 @@
            flowDrop
            [flow]="flow.flowJs">
         <label for="{{inputId}}">{{ dropLabel }}</label>
-        <input class="file-input" flowButton type="file" [flow]="flow.flowJs" [flowAttributes]="{accept: accept}" id="{{inputId}}">
+        <input class="file-input" flowButton #flowInput type="file" [flow]="flow.flowJs" [flowAttributes]="{accept: accept}" id="{{inputId}}">
       </div>
     </div>
   </ng-container>

ui-ngx/src/app/shared/components/file-input.component.ts

@@ -17,6 +17,7 @@
 import {
   AfterViewInit,
   Component,
+  ElementRef,
   EventEmitter,
   forwardRef,
   Input,
@@ -102,17 +103,34 @@ export class FileInputComponent extends PageComponent implements AfterViewInit,
   existingFileName: string;
 
   @Input()
-  convertToBase64 = false;
+  readAsBinary = false;
+
+  private multipleFileValue = false;
+
+  @Input()
+  set multipleFile(value: boolean) {
+    this.multipleFileValue = value;
+    if (this.flow?.flowJs) {
+      this.updateMultipleFileMode(this.multipleFile);
+    }
+  }
+
+  get multipleFile(): boolean {
+    return this.multipleFileValue;
+  }
 
   @Output()
-  fileNameChanged = new EventEmitter<string>();
+  fileNameChanged = new EventEmitter<string|string[]>();
 
-  fileName: string;
+  fileName: string | string[];
   fileContent: any;
 
   @ViewChild('flow', {static: true})
   flow: FlowDirective;
 
+  @ViewChild('flowInput', {static: true})
+  flowInput: ElementRef;
+
   autoUploadSubscription: Subscription;
 
   private propagateChange = null;
@@ -125,34 +143,60 @@ export class FileInputComponent extends PageComponent implements AfterViewInit,
 
   ngAfterViewInit() {
     this.autoUploadSubscription = this.flow.events$.subscribe(event => {
-      if (event.type === 'fileAdded') {
+      if (event.type === 'filesAdded') {
-        const file = event.event[0] as flowjs.FlowFile;
+        const readers = [];
-        if (this.filterFile(file)) {
+        (event.event[0] as flowjs.FlowFile[]).forEach(file => {
-          const reader = new FileReader();
+          if (this.filterFile(file)) {
-          reader.onload = (loadEvent) => {
+            readers.push(this.readerAsFile(file));
-            if (typeof reader.result === 'string') {
+          }
-              const fileContent = this.convertToBase64 ? window.btoa(reader.result) : reader.result;
+        });
-              if (fileContent && fileContent.length > 0) {
+        if (readers.length) {
-                if (this.contentConvertFunction) {
+          Promise.all(readers).then((filesContent) => {
-                  this.fileContent = this.contentConvertFunction(fileContent);
+            filesContent = filesContent.filter(content => content.fileContent != null);
-                } else {
+            if (filesContent.length === 1) {
-                  this.fileContent = fileContent;
+              this.fileContent = filesContent[0].fileContent;
-                }
+              this.fileName = filesContent[0].fileName;
-                if (this.fileContent) {
+              this.updateModel();
-                  this.fileName = file.name;
+            } else if (filesContent.length > 1) {
-                } else {
+              this.fileContent = filesContent.map(content => content.fileContent);
-                  this.fileName = null;
+              this.fileName = filesContent.map(content => content.fileName);
-                }
+              this.updateModel();
-                this.updateModel();
+            }
-              }
+          });
+        }
+      }
+    });
+    if (!this.multipleFile) {
+      this.updateMultipleFileMode(this.multipleFile);
+    }
+  }
+
+  private readerAsFile(file: flowjs.FlowFile): Promise<any> {
+    return new Promise((resolve) => {
+      const reader = new FileReader();
+      reader.onload = () => {
+        let fileName = null;
+        let fileContent = null;
+        if (typeof reader.result === 'string') {
+          fileContent = reader.result;
+          if (fileContent && fileContent.length > 0) {
+            if (this.contentConvertFunction) {
+              fileContent = this.contentConvertFunction(fileContent);
+            }
+            if (fileContent) {
+              fileName = file.name;
             }
-          };
-          if (this.convertToBase64) {
-            reader.readAsBinaryString(file.file);
-          } else {
-            reader.readAsText(file.file);
           }
         }
+        resolve({fileContent, fileName});
+      };
+      reader.onerror = () => {
+        resolve({fileContent: null, fileName: null});
+      };
+      if (this.readAsBinary) {
+        reader.readAsBinaryString(file.file);
+      } else {
+        reader.readAsText(file.file);
       }
     });
   }
@@ -207,4 +251,11 @@ export class FileInputComponent extends PageComponent implements AfterViewInit,
     this.fileContent = null;
     this.updateModel();
   }
+
+  private updateMultipleFileMode(multiple: boolean) {
+    this.flow.flowJs.opts.singleFile = !multiple;
+    if (!multiple) {
+      this.flowInput.nativeElement.removeAttribute('multiple');
+    }
+  }
 }

ui-ngx/src/app/shared/models/resource.models.ts

@@ -59,3 +59,8 @@ export interface Resource extends ResourceInfo {
   data: string;
   fileName: string;
 }
+
+export interface Resources extends ResourceInfo {
+  data: string|string[];
+  fileName: string|string[];
+}