Feature: PDF actions - merge, split & rotate (#6094)

src-ui/src/app/components/common/confirm-dialog/merge-confirm-dialog/merge-confirm-dialog.component.html

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+<div class="modal-header">
+    <h4 class="modal-title" id="modal-basic-title">{{title}}</h4>
+    <button type="button" class="btn-close" aria-label="Close" (click)="cancel()">
+    </button>
+</div>
+<div class="modal-body">
+    <p>{{message}}</p>
+    <div class="form-group">
+        <label class="form-label" for="metadataDocumentID" i18n>Documents:</label>
+        <ul class="list-group"
+            cdkDropList
+            (cdkDropListDropped)="onDrop($event)">
+            @for (documentID of documentIDs; track documentID) {
+                <li class="list-group-item" cdkDrag>
+                    <i-bs name="grip-vertical" class="me-2"></i-bs>
+                    {{getDocument(documentID)?.title}}
+                </li>
+            }
+        </ul>
+        </div>
+    <div class="form-group mt-4">
+        <label class="form-label" for="metadataDocumentID" i18n>Use metadata from:</label>
+        <select class="form-select" [(ngModel)]="metadataDocumentID">
+            <option [ngValue]="-1" i18n>Regenerate all metadata</option>
+            @for (document of documents; track document.id) {
+              <option [ngValue]="document.id">{{document.title}}</option>
+            }
+        </select>
+    </div>
+    <p class="small text-muted fst-italic mt-4" i18n>Note that only PDFs will be included.</p>
+</div>
+<div class="modal-footer">
+    <button type="button" class="btn" [class]="cancelBtnClass" (click)="cancel()" [disabled]="!buttonsEnabled">
+        <span class="d-inline-block" style="padding-bottom: 1px;">{{cancelBtnCaption}}</span>
+    </button>
+    <button type="button" class="btn" [class]="btnClass" (click)="confirm()" [disabled]="!confirmButtonEnabled || !buttonsEnabled">
+        {{btnCaption}}
+    </button>
+</div>

src-ui/src/app/components/common/confirm-dialog/merge-confirm-dialog/merge-confirm-dialog.component.scss

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+.list-group-item {
+    cursor: move;
+}

src-ui/src/app/components/common/confirm-dialog/merge-confirm-dialog/merge-confirm-dialog.component.spec.ts

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+import { ComponentFixture, TestBed } from '@angular/core/testing'
+import { NgbActiveModal } from '@ng-bootstrap/ng-bootstrap'
+import { MergeConfirmDialogComponent } from './merge-confirm-dialog.component'
+import { HttpClientTestingModule } from '@angular/common/http/testing'
+import { NgxBootstrapIconsModule, allIcons } from 'ngx-bootstrap-icons'
+import { of } from 'rxjs'
+import { DocumentService } from 'src/app/services/rest/document.service'
+import { FormsModule, ReactiveFormsModule } from '@angular/forms'
+
+describe('MergeConfirmDialogComponent', () => {
+  let component: MergeConfirmDialogComponent
+  let fixture: ComponentFixture<MergeConfirmDialogComponent>
+  let documentService: DocumentService
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [MergeConfirmDialogComponent],
+      providers: [NgbActiveModal],
+      imports: [
+        HttpClientTestingModule,
+        NgxBootstrapIconsModule.pick(allIcons),
+        ReactiveFormsModule,
+        FormsModule,
+      ],
+    }).compileComponents()
+
+    fixture = TestBed.createComponent(MergeConfirmDialogComponent)
+    documentService = TestBed.inject(DocumentService)
+    component = fixture.componentInstance
+    fixture.detectChanges()
+  })
+
+  it('should fetch documents on ngOnInit', () => {
+    const documents = [
+      { id: 1, name: 'Document 1' },
+      { id: 2, name: 'Document 2' },
+      { id: 3, name: 'Document 3' },
+    ]
+    jest.spyOn(documentService, 'getCachedMany').mockReturnValue(of(documents))
+
+    component.ngOnInit()
+
+    expect(component.documents).toEqual(documents)
+    expect(documentService.getCachedMany).toHaveBeenCalledWith(
+      component.documentIDs
+    )
+  })
+
+  it('should move documentIDs on drop', () => {
+    component.documentIDs = [1, 2, 3]
+    const event = {
+      previousIndex: 1,
+      currentIndex: 2,
+    }
+
+    component.onDrop(event as any)
+
+    expect(component.documentIDs).toEqual([1, 3, 2])
+  })
+
+  it('should get document by ID', () => {
+    const documents = [
+      { id: 1, name: 'Document 1' },
+      { id: 2, name: 'Document 2' },
+      { id: 3, name: 'Document 3' },
+    ]
+    jest.spyOn(documentService, 'getCachedMany').mockReturnValue(of(documents))
+
+    component.ngOnInit()
+
+    expect(component.getDocument(2)).toEqual({ id: 2, name: 'Document 2' })
+  })
+})

src-ui/src/app/components/common/confirm-dialog/merge-confirm-dialog/merge-confirm-dialog.component.ts

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+import { Component, OnInit } from '@angular/core'
+import { ConfirmDialogComponent } from '../confirm-dialog.component'
+import { NgbActiveModal } from '@ng-bootstrap/ng-bootstrap'
+import { DocumentService } from 'src/app/services/rest/document.service'
+import { CdkDragDrop, moveItemInArray } from '@angular/cdk/drag-drop'
+import { Subject, takeUntil } from 'rxjs'
+import { Document } from 'src/app/data/document'
+
+@Component({
+  selector: 'pngx-merge-confirm-dialog',
+  templateUrl: './merge-confirm-dialog.component.html',
+  styleUrl: './merge-confirm-dialog.component.scss',
+})
+export class MergeConfirmDialogComponent
+  extends ConfirmDialogComponent
+  implements OnInit
+{
+  public documentIDs: number[] = []
+  private _documents: Document[] = []
+  get documents(): Document[] {
+    return this._documents
+  }
+
+  public metadataDocumentID: number = -1
+
+  private unsubscribeNotifier: Subject<any> = new Subject()
+
+  constructor(
+    activeModal: NgbActiveModal,
+    private documentService: DocumentService
+  ) {
+    super(activeModal)
+  }
+
+  ngOnInit() {
+    this.documentService
+      .getCachedMany(this.documentIDs)
+      .pipe(takeUntil(this.unsubscribeNotifier))
+      .subscribe((documents) => {
+        this._documents = documents
+      })
+  }
+
+  onDrop(event: CdkDragDrop<number[]>) {
+    moveItemInArray(this.documentIDs, event.previousIndex, event.currentIndex)
+  }
+
+  getDocument(documentID: number): Document {
+    return this.documents.find((d) => d.id === documentID)
+  }
+}