Feature: Paperless AI (#10319)

src-ui/src/app/components/admin/config/config.component.html

@@ -35,8 +35,12 @@
                                                     @case (ConfigOptionType.String) { <pngx-input-text [formControlName]="option.key" [error]="errors[option.key]"></pngx-input-text> }
                                                     @case (ConfigOptionType.JSON) { <pngx-input-text [formControlName]="option.key" [error]="errors[option.key]"></pngx-input-text> }
                                                     @case (ConfigOptionType.File) { <pngx-input-file [formControlName]="option.key" (upload)="uploadFile($event, option.key)" [error]="errors[option.key]"></pngx-input-file> }
+                                                    @case (ConfigOptionType.Password) { <pngx-input-password [formControlName]="option.key" [error]="errors[option.key]"></pngx-input-password> }
                                                 }
                                             </div>
+                                            @if (option.note) {
+                                                <div class="form-text fst-italic">{{option.note}}</div>
+                                            }
                                         </div>
                                     </div>
                                 </div>

src-ui/src/app/components/admin/config/config.component.ts

@@ -29,6 +29,7 @@ import { SettingsService } from 'src/app/services/settings.service'
 import { ToastService } from 'src/app/services/toast.service'
 import { FileComponent } from '../../common/input/file/file.component'
 import { NumberComponent } from '../../common/input/number/number.component'
+import { PasswordComponent } from '../../common/input/password/password.component'
 import { SelectComponent } from '../../common/input/select/select.component'
 import { SwitchComponent } from '../../common/input/switch/switch.component'
 import { TextComponent } from '../../common/input/text/text.component'
@@ -46,6 +47,7 @@ import { LoadingComponentWithPermissions } from '../../loading-component/loading
     TextComponent,
     NumberComponent,
     FileComponent,
+    PasswordComponent,
     AsyncPipe,
     NgbNavModule,
     FormsModule,

src-ui/src/app/components/admin/settings/settings.component.spec.ts

@@ -91,6 +91,9 @@ const status: SystemStatus = {
     sanity_check_status: SystemStatusItemStatus.ERROR,
     sanity_check_last_run: new Date().toISOString(),
     sanity_check_error: 'Error running sanity check.',
+    llmindex_status: SystemStatusItemStatus.DISABLED,
+    llmindex_last_modified: new Date().toISOString(),
+    llmindex_error: null,
   },
 }
 

src-ui/src/app/components/app-frame/app-frame.component.html

@@ -30,6 +30,9 @@
     </div>
   </div>
   <ul ngbNav class="order-sm-3">
+    @if (aiEnabled) {
+      <pngx-chat></pngx-chat>
+    }
     <pngx-toasts-dropdown></pngx-toasts-dropdown>
     <li ngbDropdown class="nav-item dropdown">
       <button class="btn ps-1 border-0" id="userDropdown" ngbDropdownToggle>

src-ui/src/app/components/app-frame/app-frame.component.ts

@@ -44,6 +44,7 @@ import { SettingsService } from 'src/app/services/settings.service'
 import { TasksService } from 'src/app/services/tasks.service'
 import { ToastService } from 'src/app/services/toast.service'
 import { environment } from 'src/environments/environment'
+import { ChatComponent } from '../chat/chat/chat.component'
 import { ProfileEditDialogComponent } from '../common/profile-edit-dialog/profile-edit-dialog.component'
 import { DocumentDetailComponent } from '../document-detail/document-detail.component'
 import { ComponentWithPermissions } from '../with-permissions/with-permissions.component'
@@ -59,6 +60,7 @@ import { ToastsDropdownComponent } from './toasts-dropdown/toasts-dropdown.compo
     DocumentTitlePipe,
     IfPermissionsDirective,
     ToastsDropdownComponent,
+    ChatComponent,
     RouterModule,
     NgClass,
     NgbDropdownModule,
@@ -184,6 +186,10 @@ export class AppFrameComponent
       })
   }
 
+  get aiEnabled(): boolean {
+    return this.settingsService.get(SETTINGS_KEYS.AI_ENABLED)
+  }
+
   closeMenu() {
     this.isMenuCollapsed = true
   }

src-ui/src/app/components/app-frame/toasts-dropdown/toasts-dropdown.component.html

@@ -1,5 +1,5 @@
 
-<li ngbDropdown class="nav-item" (openChange)="onOpenChange($event)">
+<li ngbDropdown class="nav-item mx-1" (openChange)="onOpenChange($event)">
   @if (toasts.length) {
     <span class="badge rounded-pill z-3 pe-none bg-secondary me-2 position-absolute top-0 left-0">{{ toasts.length }}</span>
   }

src-ui/src/app/components/chat/chat/chat.component.html

@@ -0,0 +1,35 @@
+
+<li ngbDropdown class="nav-item me-n2" (openChange)="onOpenChange($event)">
+  <button class="btn border-0" id="chatDropdown" ngbDropdownToggle>
+    <i-bs width="1.3em" height="1.3em" name="chatSquareDots"></i-bs>
+  </button>
+  <div ngbDropdownMenu class="dropdown-menu-end shadow p-3" aria-labelledby="chatDropdown">
+    <div class="chat-container bg-light p-2">
+      <div class="chat-messages font-monospace small">
+        @for (message of messages; track message) {
+          <div class="message d-flex flex-row small" [class.justify-content-end]="message.role === 'user'">
+            <span class="p-2 m-2" [class.bg-dark]="message.role === 'user'">
+              {{ message.content }}
+              @if (message.isStreaming) { <span class="blinking-cursor">|</span> }
+            </span>
+          </div>
+        }
+        <div #scrollAnchor></div>
+      </div>
+
+      <form class="chat-input">
+        <div class="input-group">
+          <input
+            #chatInput
+            class="form-control form-control-sm" name="chatInput" type="text"
+            [placeholder]="placeholder"
+            [disabled]="loading"
+            [(ngModel)]="input"
+            (keydown)="searchInputKeyDown($event)"
+            />
+          <button class="btn btn-sm btn-secondary" type="button" (click)="sendMessage()" [disabled]="loading">Send</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</li>

src-ui/src/app/components/chat/chat/chat.component.scss

@@ -0,0 +1,37 @@
+.dropdown-menu {
+  width: var(--pngx-toast-max-width);
+}
+
+.chat-messages {
+  max-height: 350px;
+  overflow-y: auto;
+}
+
+.dropdown-toggle::after {
+  display: none;
+}
+
+.dropdown-item {
+  white-space: initial;
+}
+
+@media screen and (max-width: 400px) {
+  :host ::ng-deep .dropdown-menu-end {
+    right: -3rem;
+  }
+}
+
+.blinking-cursor {
+  font-weight: bold;
+  font-size: 1.2em;
+  animation: blink 1s step-end infinite;
+}
+
+@keyframes blink {
+  from, to {
+    opacity: 0;
+  }
+  50% {
+    opacity: 1;
+  }
+}

src-ui/src/app/components/chat/chat/chat.component.spec.ts

@@ -0,0 +1,132 @@
+import { provideHttpClient, withInterceptorsFromDi } from '@angular/common/http'
+import { provideHttpClientTesting } from '@angular/common/http/testing'
+import { ElementRef } from '@angular/core'
+import { ComponentFixture, TestBed } from '@angular/core/testing'
+import { NavigationEnd, Router } from '@angular/router'
+import { allIcons, NgxBootstrapIconsModule } from 'ngx-bootstrap-icons'
+import { Subject } from 'rxjs'
+import { ChatService } from 'src/app/services/chat.service'
+import { ChatComponent } from './chat.component'
+
+describe('ChatComponent', () => {
+  let component: ChatComponent
+  let fixture: ComponentFixture<ChatComponent>
+  let chatService: ChatService
+  let router: Router
+  let routerEvents$: Subject<NavigationEnd>
+  let mockStream$: Subject<string>
+
+  beforeEach(async () => {
+    TestBed.configureTestingModule({
+      imports: [NgxBootstrapIconsModule.pick(allIcons), ChatComponent],
+      providers: [
+        provideHttpClient(withInterceptorsFromDi()),
+        provideHttpClientTesting(),
+      ],
+    }).compileComponents()
+
+    fixture = TestBed.createComponent(ChatComponent)
+    router = TestBed.inject(Router)
+    routerEvents$ = new Subject<any>()
+    jest
+      .spyOn(router, 'events', 'get')
+      .mockReturnValue(routerEvents$.asObservable())
+    chatService = TestBed.inject(ChatService)
+    mockStream$ = new Subject<string>()
+    jest
+      .spyOn(chatService, 'streamChat')
+      .mockReturnValue(mockStream$.asObservable())
+    component = fixture.componentInstance
+
+    jest.useFakeTimers()
+
+    fixture.detectChanges()
+
+    component.scrollAnchor.nativeElement.scrollIntoView = jest.fn()
+  })
+
+  it('should update documentId on initialization', () => {
+    jest.spyOn(router, 'url', 'get').mockReturnValue('/documents/123')
+    component.ngOnInit()
+    expect(component.documentId).toBe(123)
+  })
+
+  it('should update documentId on navigation', () => {
+    component.ngOnInit()
+    routerEvents$.next(new NavigationEnd(1, '/documents/456', '/documents/456'))
+    expect(component.documentId).toBe(456)
+  })
+
+  it('should return correct placeholder based on documentId', () => {
+    component.documentId = 123
+    expect(component.placeholder).toBe('Ask a question about this document...')
+    component.documentId = undefined
+    expect(component.placeholder).toBe('Ask a question about a document...')
+  })
+
+  it('should send a message and handle streaming response', () => {
+    component.input = 'Hello'
+    component.sendMessage()
+
+    expect(component.messages.length).toBe(2)
+    expect(component.messages[0].content).toBe('Hello')
+    expect(component.loading).toBe(true)
+
+    mockStream$.next('Hi')
+    expect(component.messages[1].content).toBe('H')
+    mockStream$.next('Hi there')
+    // advance time to process the typewriter effect
+    jest.advanceTimersByTime(1000)
+    expect(component.messages[1].content).toBe('Hi there')
+
+    mockStream$.complete()
+    expect(component.loading).toBe(false)
+    expect(component.messages[1].isStreaming).toBe(false)
+  })
+
+  it('should handle errors during streaming', () => {
+    component.input = 'Hello'
+    component.sendMessage()
+
+    mockStream$.error('Error')
+    expect(component.messages[1].content).toContain(
+      '⚠️ Error receiving response.'
+    )
+    expect(component.loading).toBe(false)
+  })
+
+  it('should enqueue typewriter chunks correctly', () => {
+    const message = { content: '', role: 'assistant', isStreaming: true }
+    component.enqueueTypewriter(null, message as any) // coverage for null
+    component.enqueueTypewriter('Hello', message as any)
+    expect(component['typewriterBuffer'].length).toBe(4)
+  })
+
+  it('should scroll to bottom after sending a message', () => {
+    const scrollSpy = jest.spyOn(
+      ChatComponent.prototype as any,
+      'scrollToBottom'
+    )
+    component.input = 'Test'
+    component.sendMessage()
+    expect(scrollSpy).toHaveBeenCalled()
+  })
+
+  it('should focus chat input when dropdown is opened', () => {
+    const focus = jest.fn()
+    component.chatInput = {
+      nativeElement: { focus: focus },
+    } as unknown as ElementRef<HTMLInputElement>
+
+    component.onOpenChange(true)
+    jest.advanceTimersByTime(15)
+    expect(focus).toHaveBeenCalled()
+  })
+
+  it('should send message on Enter key press', () => {
+    jest.spyOn(component, 'sendMessage')
+    const event = new KeyboardEvent('keydown', { key: 'Enter' })
+    component.searchInputKeyDown(event)
+    expect(component.sendMessage).toHaveBeenCalled()
+  })
+})

src-ui/src/app/components/chat/chat/chat.component.ts

@@ -0,0 +1,140 @@
+import { Component, ElementRef, inject, OnInit, ViewChild } from '@angular/core'
+import { FormsModule, ReactiveFormsModule } from '@angular/forms'
+import { NavigationEnd, Router } from '@angular/router'
+import { NgbDropdownModule } from '@ng-bootstrap/ng-bootstrap'
+import { NgxBootstrapIconsModule } from 'ngx-bootstrap-icons'
+import { filter, map } from 'rxjs'
+import { ChatMessage, ChatService } from 'src/app/services/chat.service'
+
+@Component({
+  selector: 'pngx-chat',
+  imports: [
+    FormsModule,
+    ReactiveFormsModule,
+    NgxBootstrapIconsModule,
+    NgbDropdownModule,
+  ],
+  templateUrl: './chat.component.html',
+  styleUrl: './chat.component.scss',
+})
+export class ChatComponent implements OnInit {
+  public messages: ChatMessage[] = []
+  public loading = false
+  public input: string = ''
+  public documentId!: number
+
+  private chatService: ChatService = inject(ChatService)
+  private router: Router = inject(Router)
+
+  @ViewChild('scrollAnchor') scrollAnchor!: ElementRef<HTMLDivElement>
+  @ViewChild('chatInput') chatInput!: ElementRef<HTMLInputElement>
+
+  private typewriterBuffer: string[] = []
+  private typewriterActive = false
+
+  public get placeholder(): string {
+    return this.documentId
+      ? $localize`Ask a question about this document...`
+      : $localize`Ask a question about a document...`
+  }
+
+  ngOnInit(): void {
+    this.updateDocumentId(this.router.url)
+    this.router.events
+      .pipe(
+        filter((event) => event instanceof NavigationEnd),
+        map((event) => (event as NavigationEnd).url)
+      )
+      .subscribe((url) => {
+        this.updateDocumentId(url)
+      })
+  }
+
+  private updateDocumentId(url: string): void {
+    const docIdRe = url.match(/^\/documents\/(\d+)/)
+    this.documentId = docIdRe ? +docIdRe[1] : undefined
+  }
+
+  sendMessage(): void {
+    if (!this.input.trim()) return
+
+    const userMessage: ChatMessage = { role: 'user', content: this.input }
+    this.messages.push(userMessage)
+    this.scrollToBottom()
+
+    const assistantMessage: ChatMessage = {
+      role: 'assistant',
+      content: '',
+      isStreaming: true,
+    }
+    this.messages.push(assistantMessage)
+    this.loading = true
+
+    let lastPartialLength = 0
+
+    this.chatService.streamChat(this.documentId, this.input).subscribe({
+      next: (chunk) => {
+        const delta = chunk.substring(lastPartialLength)
+        lastPartialLength = chunk.length
+        this.enqueueTypewriter(delta, assistantMessage)
+      },
+      error: () => {
+        assistantMessage.content += '\n\n⚠️ Error receiving response.'
+        assistantMessage.isStreaming = false
+        this.loading = false
+      },
+      complete: () => {
+        assistantMessage.isStreaming = false
+        this.loading = false
+        this.scrollToBottom()
+      },
+    })
+
+    this.input = ''
+  }
+
+  enqueueTypewriter(chunk: string, message: ChatMessage): void {
+    if (!chunk) return
+
+    this.typewriterBuffer.push(...chunk.split(''))
+
+    if (!this.typewriterActive) {
+      this.typewriterActive = true
+      this.playTypewriter(message)
+    }
+  }
+
+  playTypewriter(message: ChatMessage): void {
+    if (this.typewriterBuffer.length === 0) {
+      this.typewriterActive = false
+      return
+    }
+
+    const nextChar = this.typewriterBuffer.shift()
+    message.content += nextChar
+    this.scrollToBottom()
+
+    setTimeout(() => this.playTypewriter(message), 10) // 10ms per character
+  }
+
+  private scrollToBottom(): void {
+    setTimeout(() => {
+      this.scrollAnchor?.nativeElement?.scrollIntoView({ behavior: 'smooth' })
+    }, 50)
+  }
+
+  public onOpenChange(open: boolean): void {
+    if (open) {
+      setTimeout(() => {
+        this.chatInput.nativeElement.focus()
+      }, 10)
+    }
+  }
+
+  public searchInputKeyDown(event: KeyboardEvent) {
+    if (event.key === 'Enter') {
+      event.preventDefault()
+      this.sendMessage()
+    }
+  }
+}

src-ui/src/app/components/common/custom-fields-dropdown/custom-fields-dropdown.component.html

@@ -1,7 +1,7 @@
-<div ngbDropdown #fieldDropdown="ngbDropdown" (openChange)="onOpenClose($event)" [popperOptions]="popperOptions" placement="bottom-end">
-    <button class="btn btn-sm btn-outline-primary" id="customFieldsDropdown" [disabled]="disabled" ngbDropdownToggle>
+<div ngbDropdown #fieldDropdown="ngbDropdown" (openChange)="onOpenClose($event)" [popperOptions]="popperOptions">
+    <button type="button" class="btn btn-sm btn-outline-primary" id="customFieldsDropdown" [disabled]="disabled" ngbDropdownToggle>
       <i-bs name="ui-radios"></i-bs>
-      <div class="d-none d-sm-inline">&nbsp;<ng-container i18n>Custom Fields</ng-container></div>
+      <div class="d-none d-lg-inline">&nbsp;<ng-container i18n>Custom Fields</ng-container></div>
     </button>
     <div ngbDropdownMenu aria-labelledby="customFieldsDropdown" class="shadow custom-fields-dropdown">
         <div class="list-group list-group-flush" (keydown)="listKeyDown($event)">

src-ui/src/app/components/common/input/password/password.component.html

@@ -1,17 +1,24 @@
-<div class="mb-3">
-  <label class="form-label" [for]="inputId">{{title}}</label>
-  <div class="input-group" [class.is-invalid]="error">
-    <input #inputField [type]="showReveal && textVisible ? 'text' : 'password'" class="form-control" [class.is-invalid]="error" [id]="inputId" [(ngModel)]="value" (focus)="onFocus()" (focusout)="onFocusOut()" (change)="onChange(value)" [disabled]="disabled" [autocomplete]="autocomplete">
-    @if (showReveal) {
-      <button type="button" class="btn btn-outline-secondary" (click)="toggleVisibility()" i18n-title title="Show password" [disabled]="disabled || disableRevealToggle">
-        <i-bs name="eye"></i-bs>
-      </button>
+<div class="mb-3" [class.pb-3]="error">
+  <div class="row">
+    <div class="d-flex align-items-center position-relative hidden-button-container" [class.col-md-3]="horizontal">
+      @if (title) {
+        <label class="form-label" [class.mb-md-0]="horizontal" [for]="inputId">{{title}}</label>
+      }
+    </div>
+  <div class="position-relative" [class.col-md-9]="horizontal">
+    <div class="input-group" [class.is-invalid]="error">
+      <input #inputField [type]="showReveal && textVisible ? 'text' : 'password'" class="form-control" [class.is-invalid]="error" [id]="inputId" [(ngModel)]="value" (focus)="onFocus()" (focusout)="onFocusOut()" (change)="onChange(value)" [disabled]="disabled" [autocomplete]="autocomplete">
+      @if (showReveal) {
+        <button type="button" class="btn btn-outline-secondary" (click)="toggleVisibility()" i18n-title title="Show password" [disabled]="disabled || disableRevealToggle">
+          <i-bs name="eye"></i-bs>
+        </button>
+      }
+    </div>
+    <div class="invalid-feedback">
+      {{error}}
+    </div>
+    @if (hint) {
+      <small class="form-text text-muted" [innerHTML]="hint"></small>
     }
   </div>
-  <div class="invalid-feedback">
-    {{error}}
-  </div>
-  @if (hint) {
-    <small class="form-text text-muted" [innerHTML]="hint"></small>
-  }
 </div>

src-ui/src/app/components/common/input/text/text.component.html

@@ -15,6 +15,12 @@
         @if (hint) {
           <small class="form-text text-muted" [innerHTML]="hint"></small>
         }
+        @if (getSuggestion()?.length > 0) {
+          <small>
+            <span i18n>Suggestion:</span>&nbsp;
+            <a (click)="applySuggestion(s)" [routerLink]="[]">{{getSuggestion()}}</a>&nbsp;
+          </small>
+        }
         <div class="invalid-feedback position-absolute top-100">
           {{error}}
         </div>

src-ui/src/app/components/common/input/text/text.component.spec.ts

@@ -26,10 +26,20 @@ describe('TextComponent', () => {
 
   it('should support use of input field', () => {
     expect(component.value).toBeUndefined()
-    // TODO: why doesn't this work?
-    // input.value = 'foo'
-    // input.dispatchEvent(new Event('change'))
-    // fixture.detectChanges()
-    // expect(component.value).toEqual('foo')
+    input.value = 'foo'
+    input.dispatchEvent(new Event('input'))
+    fixture.detectChanges()
+    expect(component.value).toBe('foo')
+  })
+
+  it('should support suggestion', () => {
+    component.value = 'foo'
+    component.suggestion = 'foo'
+    expect(component.getSuggestion()).toBe('')
+    component.value = 'bar'
+    expect(component.getSuggestion()).toBe('foo')
+    component.applySuggestion()
+    fixture.detectChanges()
+    expect(component.value).toBe('foo')
   })
 })

src-ui/src/app/components/common/input/text/text.component.ts

@@ -4,6 +4,7 @@ import {
   NG_VALUE_ACCESSOR,
   ReactiveFormsModule,
 } from '@angular/forms'
+import { RouterLink } from '@angular/router'
 import { NgxBootstrapIconsModule } from 'ngx-bootstrap-icons'
 import { AbstractInputComponent } from '../abstract-input'
 
@@ -18,7 +19,12 @@ import { AbstractInputComponent } from '../abstract-input'
   selector: 'pngx-input-text',
   templateUrl: './text.component.html',
   styleUrls: ['./text.component.scss'],
-  imports: [FormsModule, ReactiveFormsModule, NgxBootstrapIconsModule],
+  imports: [
+    FormsModule,
+    ReactiveFormsModule,
+    NgxBootstrapIconsModule,
+    RouterLink,
+  ],
 })
 export class TextComponent extends AbstractInputComponent<string> {
   @Input()
@@ -27,7 +33,19 @@ export class TextComponent extends AbstractInputComponent<string> {
   @Input()
   placeholder: string = ''
 
+  @Input()
+  suggestion: string = ''
+
   constructor() {
     super()
   }
+
+  getSuggestion() {
+    return this.value !== this.suggestion ? this.suggestion : ''
+  }
+
+  applySuggestion() {
+    this.value = this.suggestion
+    this.onChange(this.value)
+  }
 }

src-ui/src/app/components/common/suggestions-dropdown/suggestions-dropdown.component.html

@@ -0,0 +1,49 @@
+<div class="btn-group">
+  <button type="button" class="btn btn-sm btn-outline-primary" (click)="clickSuggest()" [disabled]="loading || (suggestions && !aiEnabled)">
+    @if (loading) {
+      <div class="spinner-border spinner-border-sm" role="status"></div>
+    } @else {
+      <i-bs width="1.2em" height="1.2em" name="stars"></i-bs>
+    }
+    <span class="d-none d-lg-inline ps-1" i18n>Suggest</span>
+    @if (totalSuggestions > 0) {
+      <span class="badge bg-primary ms-2">{{ totalSuggestions }}</span>
+    }
+  </button>
+
+  @if (aiEnabled) {
+    <div class="btn-group" ngbDropdown #dropdown="ngbDropdown" [popperOptions]="popperOptions">
+      <button type="button" class="btn btn-sm btn-outline-primary" ngbDropdownToggle [disabled]="loading || !suggestions" aria-expanded="false" aria-controls="suggestionsDropdown" aria-label="Suggestions dropdown">
+        <span class="visually-hidden" i18n>Show suggestions</span>
+      </button>
+
+      <div ngbDropdownMenu aria-labelledby="suggestionsDropdown" class="shadow suggestions-dropdown">
+        <div class="list-group list-group-flush small pb-0">
+          @if (!suggestions?.suggested_tags && !suggestions?.suggested_document_types && !suggestions?.suggested_correspondents) {
+            <div class="list-group-item text-muted fst-italic">
+              <small class="text-muted small fst-italic" i18n>No novel suggestions</small>
+            </div>
+          }
+          @if (suggestions?.suggested_tags.length > 0) {
+            <small class="list-group-item text-uppercase text-muted small">Tags</small>
+            @for (tag of suggestions.suggested_tags; track tag) {
+              <button type="button" class="list-group-item list-group-item-action bg-light" (click)="addTag.emit(tag)" i18n>{{ tag }}</button>
+            }
+          }
+          @if (suggestions?.suggested_document_types.length > 0) {
+            <div class="list-group-item text-uppercase text-muted small">Document Types</div>
+            @for (type of suggestions.suggested_document_types; track type) {
+              <button type="button" class="list-group-item list-group-item-action bg-light" (click)="addDocumentType.emit(type)" i18n>{{ type }}</button>
+            }
+          }
+          @if (suggestions?.suggested_correspondents.length > 0) {
+            <div class="list-group-item text-uppercase text-muted small">Correspondents</div>
+            @for (correspondent of suggestions.suggested_correspondents; track correspondent) {
+              <button type="button" class="list-group-item list-group-item-action bg-light" (click)="addCorrespondent.emit(correspondent)" i18n>{{ correspondent }}</button>
+            }
+          }
+        </div>
+      </div>
+    </div>
+  }
+</div>

src-ui/src/app/components/common/suggestions-dropdown/suggestions-dropdown.component.scss

@@ -0,0 +1,3 @@
+.suggestions-dropdown {
+  min-width: 250px;
+}

src-ui/src/app/components/common/suggestions-dropdown/suggestions-dropdown.component.spec.ts

@@ -0,0 +1,51 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing'
+import { NgbDropdownModule } from '@ng-bootstrap/ng-bootstrap'
+import { NgxBootstrapIconsModule, allIcons } from 'ngx-bootstrap-icons'
+import { SuggestionsDropdownComponent } from './suggestions-dropdown.component'
+
+describe('SuggestionsDropdownComponent', () => {
+  let component: SuggestionsDropdownComponent
+  let fixture: ComponentFixture<SuggestionsDropdownComponent>
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        NgbDropdownModule,
+        NgxBootstrapIconsModule.pick(allIcons),
+        SuggestionsDropdownComponent,
+      ],
+      providers: [],
+    })
+    fixture = TestBed.createComponent(SuggestionsDropdownComponent)
+    component = fixture.componentInstance
+    fixture.detectChanges()
+  })
+
+  it('should calculate totalSuggestions', () => {
+    component.suggestions = {
+      suggested_correspondents: ['John Doe'],
+      suggested_tags: ['Tag1', 'Tag2'],
+      suggested_document_types: ['Type1'],
+    }
+    expect(component.totalSuggestions).toBe(4)
+  })
+
+  it('should emit getSuggestions when clickSuggest is called and suggestions are null', () => {
+    jest.spyOn(component.getSuggestions, 'emit')
+    component.suggestions = null
+    component.clickSuggest()
+    expect(component.getSuggestions.emit).toHaveBeenCalled()
+  })
+
+  it('should toggle dropdown when clickSuggest is called and suggestions are not null', () => {
+    component.aiEnabled = true
+    fixture.detectChanges()
+    component.suggestions = {
+      suggested_correspondents: [],
+      suggested_tags: [],
+      suggested_document_types: [],
+    }
+    component.clickSuggest()
+    expect(component.dropdown.open).toBeTruthy()
+  })
+})

src-ui/src/app/components/common/suggestions-dropdown/suggestions-dropdown.component.ts

@@ -0,0 +1,64 @@
+import {
+  Component,
+  EventEmitter,
+  Input,
+  Output,
+  ViewChild,
+} from '@angular/core'
+import { NgbDropdown, NgbDropdownModule } from '@ng-bootstrap/ng-bootstrap'
+import { NgxBootstrapIconsModule } from 'ngx-bootstrap-icons'
+import { DocumentSuggestions } from 'src/app/data/document-suggestions'
+import { pngxPopperOptions } from 'src/app/utils/popper-options'
+
+@Component({
+  selector: 'pngx-suggestions-dropdown',
+  imports: [NgbDropdownModule, NgxBootstrapIconsModule],
+  templateUrl: './suggestions-dropdown.component.html',
+  styleUrl: './suggestions-dropdown.component.scss',
+})
+export class SuggestionsDropdownComponent {
+  public popperOptions = pngxPopperOptions
+
+  @ViewChild('dropdown') dropdown: NgbDropdown
+
+  @Input()
+  suggestions: DocumentSuggestions = null
+
+  @Input()
+  aiEnabled: boolean = false
+
+  @Input()
+  loading: boolean = false
+
+  @Input()
+  disabled: boolean = false
+
+  @Output()
+  getSuggestions: EventEmitter<SuggestionsDropdownComponent> =
+    new EventEmitter()
+
+  @Output()
+  addTag: EventEmitter<string> = new EventEmitter()
+
+  @Output()
+  addDocumentType: EventEmitter<string> = new EventEmitter()
+
+  @Output()
+  addCorrespondent: EventEmitter<string> = new EventEmitter()
+
+  public clickSuggest(): void {
+    if (!this.suggestions) {
+      this.getSuggestions.emit(this)
+    } else {
+      this.dropdown?.toggle()
+    }
+  }
+
+  get totalSuggestions(): number {
+    return (
+      this.suggestions?.suggested_correspondents?.length +
+        this.suggestions?.suggested_tags?.length +
+        this.suggestions?.suggested_document_types?.length || 0
+    )
+  }
+}

src-ui/src/app/components/common/system-status-dialog/system-status-dialog.component.html

@@ -266,6 +266,43 @@
                   }
                 </span>
               </dd>
+              @if (aiEnabled) {
+                <dt i18n>AI Index</dt>
+                <dd class="d-flex align-items-center">
+                  <button class="btn btn-sm d-flex align-items-center btn-dark text-uppercase small" [ngbPopover]="llmIndexStatus" triggers="click mouseenter:mouseleave">
+                    {{status.tasks.llmindex_status}}
+                    @if (status.tasks.llmindex_status === 'OK') {
+                      @if (isStale(status.tasks.llmindex_last_modified)) {
+                        <i-bs name="exclamation-triangle-fill" class="text-warning ms-2 lh-1"></i-bs>
+                      } @else {
+                        <i-bs name="check-circle-fill" class="text-primary ms-2 lh-1"></i-bs>
+                      }
+                    } @else {
+                      <i-bs name="exclamation-triangle-fill" class="ms-2 lh-1"
+                      [class.text-danger]="status.tasks.llmindex_status === SystemStatusItemStatus.ERROR"
+                      [class.text-warning]="status.tasks.llmindex_status === SystemStatusItemStatus.WARNING"
+                      [class.text-muted]="status.tasks.llmindex_status === SystemStatusItemStatus.DISABLED"></i-bs>
+                    }
+                  </button>
+                  @if (currentUserIsSuperUser) {
+                    @if (isRunning(PaperlessTaskName.LLMIndexUpdate)) {
+                      <div class="spinner-border spinner-border-sm ms-2" role="status"></div>
+                    } @else {
+                      <button class="btn btn-sm d-flex align-items-center btn-dark small ms-2" (click)="runTask(PaperlessTaskName.LLMIndexUpdate)">
+                        <i-bs name="play-fill"></i-bs>&nbsp;
+                        <ng-container i18n>Run Task</ng-container>
+                      </button>
+                    }
+                  }
+                </dd>
+                <ng-template #llmIndexStatus>
+                  @if (status.tasks.llmindex_status === 'OK') {
+                    <h6><ng-container i18n>Last Run</ng-container>:</h6> <span class="font-monospace small">{{status.tasks.llmindex_last_modified | customDate:'medium'}}</span>
+                  } @else {
+                    <h6><ng-container i18n>Error</ng-container>:</h6> <span class="font-monospace small">{{status.tasks.llmindex_error}}</span>
+                  }
+                </ng-template>
+              }
             </dl>
           </div>
         </div>

src-ui/src/app/components/common/system-status-dialog/system-status-dialog.component.spec.ts

@@ -68,6 +68,9 @@ const status: SystemStatus = {
     sanity_check_status: SystemStatusItemStatus.OK,
     sanity_check_last_run: new Date().toISOString(),
     sanity_check_error: null,
+    llmindex_status: SystemStatusItemStatus.OK,
+    llmindex_last_modified: new Date().toISOString(),
+    llmindex_error: null,
   },
 }
 

src-ui/src/app/components/common/system-status-dialog/system-status-dialog.component.ts

@@ -13,9 +13,11 @@ import {
   SystemStatus,
   SystemStatusItemStatus,
 } from 'src/app/data/system-status'
+import { SETTINGS_KEYS } from 'src/app/data/ui-settings'
 import { CustomDatePipe } from 'src/app/pipes/custom-date.pipe'
 import { FileSizePipe } from 'src/app/pipes/file-size.pipe'
 import { PermissionsService } from 'src/app/services/permissions.service'
+import { SettingsService } from 'src/app/services/settings.service'
 import { SystemStatusService } from 'src/app/services/system-status.service'
 import { TasksService } from 'src/app/services/tasks.service'
 import { ToastService } from 'src/app/services/toast.service'
@@ -44,6 +46,7 @@ export class SystemStatusDialogComponent implements OnInit, OnDestroy {
   private toastService = inject(ToastService)
   private permissionsService = inject(PermissionsService)
   private websocketStatusService = inject(WebsocketStatusService)
+  private settingsService = inject(SettingsService)
 
   public SystemStatusItemStatus = SystemStatusItemStatus
   public PaperlessTaskName = PaperlessTaskName
@@ -60,6 +63,10 @@ export class SystemStatusDialogComponent implements OnInit, OnDestroy {
     return this.permissionsService.isSuperUser()
   }
 
+  get aiEnabled(): boolean {
+    return this.settingsService.get(SETTINGS_KEYS.AI_ENABLED)
+  }
+
   public ngOnInit() {
     this.versionMismatch =
       environment.production &&

src-ui/src/app/components/document-detail/document-detail.component.html

@@ -74,16 +74,6 @@
     </div>
   </div>
 
-  <pngx-custom-fields-dropdown
-    *pngxIfPermissions="{ action: PermissionAction.View, type: PermissionType.CustomField }"
-    [documentId]="documentId"
-    [disabled]="!userCanEdit"
-    [existingFields]="document?.custom_fields"
-    (created)="refreshCustomFields()"
-    (added)="addField($event)">
-  </pngx-custom-fields-dropdown>
-
-
   <div class="ms-auto" ngbDropdown>
     <button class="btn btn-sm btn-outline-primary" id="sendDropdown" ngbDropdownToggle>
       <i-bs name="send"></i-bs>
@@ -104,7 +94,7 @@
 </pngx-page-header>
 
 <div class="row">
-  <div class="col-md-6 col-xl-4 mb-4">
+  <div class="col-md-6 col-xl-5 mb-4">
 
     <form [formGroup]='documentForm' (ngSubmit)="save()">
 
@@ -121,6 +111,32 @@
           </button>
         </div>
 
+        <ng-container *pngxIfPermissions="{ action: PermissionAction.Change, type: PermissionType.Document }">
+          <div class="btn-group pb-3 ms-auto">
+            <pngx-suggestions-dropdown *pngxIfPermissions="{ action: PermissionAction.Change, type: PermissionType.Document }"
+              [disabled]="!userCanEdit || suggestionsLoading"
+              [loading]="suggestionsLoading"
+              [suggestions]="suggestions"
+              [aiEnabled]="aiEnabled"
+              (getSuggestions)="getSuggestions()"
+              (addTag)="createTag($event)"
+              (addDocumentType)="createDocumentType($event)"
+              (addCorrespondent)="createCorrespondent($event)">
+            </pngx-suggestions-dropdown>
+          </div>
+
+          <div class="btn-group pb-3 ms-2">
+            <pngx-custom-fields-dropdown
+              *pngxIfPermissions="{ action: PermissionAction.View, type: PermissionType.CustomField }"
+              [documentId]="documentId"
+              [disabled]="!userCanEdit"
+              [existingFields]="document?.custom_fields"
+              (created)="refreshCustomFields()"
+              (added)="addField($event)">
+            </pngx-custom-fields-dropdown>
+          </div>
+        </ng-container>
+
         <ng-container *ngTemplateOutlet="saveButtons"></ng-container>
       </div>
 
@@ -129,7 +145,7 @@
           <a ngbNavLink i18n>Details</a>
           <ng-template ngbNavContent>
             <div>
-              <pngx-input-text #inputTitle i18n-title title="Title" formControlName="title" [horizontal]="true" (keyup)="titleKeyUp($event)" [error]="error?.title"></pngx-input-text>
+              <pngx-input-text #inputTitle i18n-title title="Title" formControlName="title" [horizontal]="true" [suggestion]="suggestions?.title" (keyup)="titleKeyUp($event)" [error]="error?.title"></pngx-input-text>
               <pngx-input-number i18n-title title="Archive serial number" [error]="error?.archive_serial_number" [horizontal]="true" formControlName='archive_serial_number'></pngx-input-number>
               <pngx-input-date i18n-title title="Date created" formControlName="created" [suggestions]="suggestions?.dates" [showFilter]="true" [horizontal]="true" (filterDocuments)="filterDocuments($event)"
               [error]="error?.created"></pngx-input-date>
@@ -139,7 +155,7 @@
               (createNew)="createDocumentType($event)" [hideAddButton]="createDisabled(DataType.DocumentType)" [suggestions]="suggestions?.document_types" *pngxIfPermissions="{ action: PermissionAction.View, type: PermissionType.DocumentType }"></pngx-input-select>
               <pngx-input-select [items]="storagePaths" i18n-title title="Storage path" formControlName="storage_path" [allowNull]="true" [showFilter]="true" [horizontal]="true" (filterDocuments)="filterDocuments($event, DataType.StoragePath)"
               (createNew)="createStoragePath($event)" [hideAddButton]="createDisabled(DataType.StoragePath)" [suggestions]="suggestions?.storage_paths" i18n-placeholder placeholder="Default" *pngxIfPermissions="{ action: PermissionAction.View, type: PermissionType.StoragePath }"></pngx-input-select>
-              <pngx-input-tags formControlName="tags" [suggestions]="suggestions?.tags" [showFilter]="true" [horizontal]="true" (filterDocuments)="filterDocuments($event, DataType.Tag)" [hideAddButton]="createDisabled(DataType.Tag)" *pngxIfPermissions="{ action: PermissionAction.View, type: PermissionType.Tag }"></pngx-input-tags>
+              <pngx-input-tags #tagsInput formControlName="tags" [suggestions]="suggestions?.tags" [showFilter]="true" [horizontal]="true" (filterDocuments)="filterDocuments($event, DataType.Tag)" [hideAddButton]="createDisabled(DataType.Tag)" *pngxIfPermissions="{ action: PermissionAction.View, type: PermissionType.Tag }"></pngx-input-tags>
               @for (fieldInstance of document?.custom_fields; track fieldInstance.field; let i = $index) {
                 <div [formGroup]="customFieldFormFields.controls[i]">
                   @switch (getCustomFieldFromInstance(fieldInstance)?.data_type) {
@@ -361,14 +377,14 @@
     </form>
   </div>
 
-  <div class="col-md-6 col-xl-8 mb-3 d-none d-md-block position-relative" #pdfPreview>
+  <div class="col-md-6 col-xl-7 mb-3 d-none d-md-block position-relative" #pdfPreview>
     <ng-container *ngTemplateOutlet="previewContent"></ng-container>
   </div>
 
 </div>
 
 <ng-template #saveButtons>
-  <div class="btn-group pb-3 ms-auto">
+  <div class="btn-group pb-3 ms-4">
     <ng-container *pngxIfPermissions="{ action: PermissionAction.Change, type: PermissionType.Document }">
       <button type="submit" class="order-3 btn btn-sm btn-primary" i18n [disabled]="!userCanEdit || networkActive || (isDirty$ | async) !== true">Save</button>
       @if (hasNext()) {

src-ui/src/app/components/document-detail/document-detail.component.spec.ts

@@ -157,6 +157,16 @@ describe('DocumentDetailComponent', () => {
         {
           provide: TagService,
           useValue: {
+            getCachedMany: (ids: number[]) =>
+              of(
+                ids.map((id) => ({
+                  id,
+                  name: `Tag${id}`,
+                  is_inbox_tag: true,
+                  color: '#ff0000',
+                  text_color: '#000000',
+                }))
+              ),
             listAll: () =>
               of({
                 count: 3,
@@ -383,8 +393,32 @@ describe('DocumentDetailComponent', () => {
     currentUserCan = true
   })
 
-  it('should support creating document type', () => {
+  it('should support creating tag, remove from suggestions', () => {
     initNormally()
+    component.suggestions = {
+      suggested_tags: ['Tag1', 'NewTag12'],
+    }
+    let openModal: NgbModalRef
+    modalService.activeInstances.subscribe((modal) => (openModal = modal[0]))
+    const modalSpy = jest.spyOn(modalService, 'open')
+    component.createTag('NewTag12')
+    expect(modalSpy).toHaveBeenCalled()
+    openModal.componentInstance.succeeded.next({
+      id: 12,
+      name: 'NewTag12',
+      is_inbox_tag: true,
+      color: '#ff0000',
+      text_color: '#000000',
+    })
+    expect(component.tagsInput.value).toContain(12)
+    expect(component.suggestions.suggested_tags).not.toContain('NewTag12')
+  })
+
+  it('should support creating document type, remove from suggestions', () => {
+    initNormally()
+    component.suggestions = {
+      suggested_document_types: ['DocumentType1', 'NewDocType2'],
+    }
     let openModal: NgbModalRef
     modalService.activeInstances.subscribe((modal) => (openModal = modal[0]))
     const modalSpy = jest.spyOn(modalService, 'open')
@@ -392,10 +426,16 @@ describe('DocumentDetailComponent', () => {
     expect(modalSpy).toHaveBeenCalled()
     openModal.componentInstance.succeeded.next({ id: 12, name: 'NewDocType12' })
     expect(component.documentForm.get('document_type').value).toEqual(12)
+    expect(component.suggestions.suggested_document_types).not.toContain(
+      'NewDocType2'
+    )
   })
 
-  it('should support creating correspondent', () => {
+  it('should support creating correspondent, remove from suggestions', () => {
     initNormally()
+    component.suggestions = {
+      suggested_correspondents: ['Correspondent1', 'NewCorrrespondent12'],
+    }
     let openModal: NgbModalRef
     modalService.activeInstances.subscribe((modal) => (openModal = modal[0]))
     const modalSpy = jest.spyOn(modalService, 'open')
@@ -406,6 +446,9 @@ describe('DocumentDetailComponent', () => {
       name: 'NewCorrrespondent12',
     })
     expect(component.documentForm.get('correspondent').value).toEqual(12)
+    expect(component.suggestions.suggested_correspondents).not.toContain(
+      'NewCorrrespondent12'
+    )
   })
 
   it('should support creating storage path', () => {
@@ -996,7 +1039,7 @@ describe('DocumentDetailComponent', () => {
     expect(component.document.custom_fields).toHaveLength(initialLength - 1)
     expect(component.customFieldFormFields).toHaveLength(initialLength - 1)
     expect(
-      fixture.debugElement.query(By.css('form')).nativeElement.textContent
+      fixture.debugElement.query(By.css('form ul')).nativeElement.textContent
     ).not.toContain('Field 1')
     const patchSpy = jest.spyOn(documentService, 'patch')
     component.save(true)
@@ -1087,10 +1130,22 @@ describe('DocumentDetailComponent', () => {
 
   it('should get suggestions', () => {
     const suggestionsSpy = jest.spyOn(documentService, 'getSuggestions')
-    suggestionsSpy.mockReturnValue(of({ tags: [42, 43] }))
+    suggestionsSpy.mockReturnValue(
+      of({
+        tags: [42, 43],
+        suggested_tags: [],
+        suggested_document_types: [],
+        suggested_correspondents: [],
+      })
+    )
     initNormally()
     expect(suggestionsSpy).toHaveBeenCalled()
-    expect(component.suggestions).toEqual({ tags: [42, 43] })
+    expect(component.suggestions).toEqual({
+      tags: [42, 43],
+      suggested_tags: [],
+      suggested_document_types: [],
+      suggested_correspondents: [],
+    })
   })
 
   it('should show error if needed for get suggestions', () => {

src-ui/src/app/components/document-detail/document-detail.component.ts

@@ -31,6 +31,7 @@ import {
   map,
   switchMap,
   takeUntil,
+  tap,
 } from 'rxjs/operators'
 import { Correspondent } from 'src/app/data/correspondent'
 import { CustomField, CustomFieldDataType } from 'src/app/data/custom-field'
@@ -76,6 +77,7 @@ import { DocumentTypeService } from 'src/app/services/rest/document-type.service
 import { DocumentService } from 'src/app/services/rest/document.service'
 import { SavedViewService } from 'src/app/services/rest/saved-view.service'
 import { StoragePathService } from 'src/app/services/rest/storage-path.service'
+import { TagService } from 'src/app/services/rest/tag.service'
 import { UserService } from 'src/app/services/rest/user.service'
 import { SettingsService } from 'src/app/services/settings.service'
 import { ToastService } from 'src/app/services/toast.service'
@@ -89,6 +91,7 @@ import { CorrespondentEditDialogComponent } from '../common/edit-dialog/correspo
 import { DocumentTypeEditDialogComponent } from '../common/edit-dialog/document-type-edit-dialog/document-type-edit-dialog.component'
 import { EditDialogMode } from '../common/edit-dialog/edit-dialog.component'
 import { StoragePathEditDialogComponent } from '../common/edit-dialog/storage-path-edit-dialog/storage-path-edit-dialog.component'
+import { TagEditDialogComponent } from '../common/edit-dialog/tag-edit-dialog/tag-edit-dialog.component'
 import { EmailDocumentDialogComponent } from '../common/email-document-dialog/email-document-dialog.component'
 import { CheckComponent } from '../common/input/check/check.component'
 import { DateComponent } from '../common/input/date/date.component'
@@ -107,6 +110,7 @@ import {
   PdfEditorEditMode,
 } from '../common/pdf-editor/pdf-editor.component'
 import { ShareLinksDialogComponent } from '../common/share-links-dialog/share-links-dialog.component'
+import { SuggestionsDropdownComponent } from '../common/suggestions-dropdown/suggestions-dropdown.component'
 import { DocumentHistoryComponent } from '../document-history/document-history.component'
 import { DocumentNotesComponent } from '../document-notes/document-notes.component'
 import { ComponentWithPermissions } from '../with-permissions/with-permissions.component'
@@ -163,6 +167,7 @@ export enum ZoomSetting {
     NumberComponent,
     MonetaryComponent,
     UrlComponent,
+    SuggestionsDropdownComponent,
     CustomDatePipe,
     FileSizePipe,
     IfPermissionsDirective,
@@ -184,6 +189,7 @@ export class DocumentDetailComponent
 {
   private documentsService = inject(DocumentService)
   private route = inject(ActivatedRoute)
+  private tagService = inject(TagService)
   private correspondentService = inject(CorrespondentService)
   private documentTypeService = inject(DocumentTypeService)
   private router = inject(Router)
@@ -206,6 +212,8 @@ export class DocumentDetailComponent
   @ViewChild('inputTitle')
   titleInput: TextComponent
 
+  @ViewChild('tagsInput') tagsInput: TagsComponent
+
   expandOriginalMetadata = false
   expandArchivedMetadata = false
 
@@ -217,6 +225,7 @@ export class DocumentDetailComponent
   document: Document
   metadata: DocumentMetadata
   suggestions: DocumentSuggestions
+  suggestionsLoading: boolean = false
   users: User[]
 
   title: string
@@ -298,6 +307,10 @@ export class DocumentDetailComponent
     return this.deviceDetectorService.isMobile()
   }
 
+  get aiEnabled(): boolean {
+    return this.settings.get(SETTINGS_KEYS.AI_ENABLED)
+  }
+
   get archiveContentRenderType(): ContentRenderType {
     return this.document?.archived_file_name
       ? this.getRenderType('application/pdf')
@@ -682,25 +695,12 @@ export class DocumentDetailComponent
         PermissionType.Document
       )
     ) {
-      this.documentsService
-        .getSuggestions(doc.id)
-        .pipe(
-          first(),
-          takeUntil(this.unsubscribeNotifier),
-          takeUntil(this.docChangeNotifier)
-        )
-        .subscribe({
-          next: (result) => {
-            this.suggestions = result
-          },
-          error: (error) => {
-            this.suggestions = null
-            this.toastService.showError(
-              $localize`Error retrieving suggestions.`,
-              error
-            )
-          },
-        })
+      this.tagService.getCachedMany(doc.tags).subscribe((tags) => {
+        // only show suggestions if document has inbox tags
+        if (tags.some((tag) => tag.is_inbox_tag)) {
+          this.getSuggestions()
+        }
+      })
     }
     this.title = this.documentTitlePipe.transform(doc.title)
     this.prepareForm(doc)
@@ -710,6 +710,63 @@ export class DocumentDetailComponent
     return this.documentForm.get('custom_fields') as FormArray
   }
 
+  getSuggestions() {
+    this.suggestionsLoading = true
+    this.documentsService
+      .getSuggestions(this.documentId)
+      .pipe(
+        first(),
+        takeUntil(this.unsubscribeNotifier),
+        takeUntil(this.docChangeNotifier)
+      )
+      .subscribe({
+        next: (result) => {
+          this.suggestions = result
+          this.suggestionsLoading = false
+        },
+        error: (error) => {
+          this.suggestions = null
+          this.suggestionsLoading = false
+          this.toastService.showError(
+            $localize`Error retrieving suggestions.`,
+            error
+          )
+        },
+      })
+  }
+
+  createTag(newName: string) {
+    var modal = this.modalService.open(TagEditDialogComponent, {
+      backdrop: 'static',
+    })
+    modal.componentInstance.dialogMode = EditDialogMode.CREATE
+    if (newName) modal.componentInstance.object = { name: newName }
+    modal.componentInstance.succeeded
+      .pipe(
+        tap((newTag: Tag) => {
+          // remove from suggestions if present
+          if (this.suggestions) {
+            this.suggestions = {
+              ...this.suggestions,
+              suggested_tags: this.suggestions.suggested_tags.filter(
+                (tag) => tag !== newTag.name
+              ),
+            }
+          }
+        }),
+        switchMap((newTag: Tag) => {
+          return this.tagService
+            .listAll()
+            .pipe(map((tags) => ({ newTag, tags })))
+        }),
+        takeUntil(this.unsubscribeNotifier)
+      )
+      .subscribe(({ newTag, tags }) => {
+        this.tagsInput.tags = tags.results
+        this.tagsInput.addTag(newTag.id)
+      })
+  }
+
   createDocumentType(newName: string) {
     var modal = this.modalService.open(DocumentTypeEditDialogComponent, {
       backdrop: 'static',
@@ -729,6 +786,12 @@ export class DocumentDetailComponent
         this.documentTypes = documentTypes.results
         this.documentForm.get('document_type').setValue(newDocumentType.id)
         this.documentForm.get('document_type').markAsDirty()
+        if (this.suggestions) {
+          this.suggestions.suggested_document_types =
+            this.suggestions.suggested_document_types.filter(
+              (dt) => dt !== newName
+            )
+        }
       })
   }
 
@@ -753,6 +816,12 @@ export class DocumentDetailComponent
         this.correspondents = correspondents.results
         this.documentForm.get('correspondent').setValue(newCorrespondent.id)
         this.documentForm.get('correspondent').markAsDirty()
+        if (this.suggestions) {
+          this.suggestions.suggested_correspondents =
+            this.suggestions.suggested_correspondents.filter(
+              (c) => c !== newName
+            )
+        }
       })
   }
 

src-ui/src/app/data/document-suggestions.ts

@@ -1,11 +1,17 @@
 export interface DocumentSuggestions {
+  title?: string
+
   tags?: number[]
+  suggested_tags?: string[]
 
   correspondents?: number[]
+  suggested_correspondents?: string[]
 
   document_types?: number[]
+  suggested_document_types?: string[]
 
   storage_paths?: number[]
+  suggested_storage_paths?: string[]
 
   dates?: string[] // ISO-formatted date string e.g. 2022-11-03
 }

src-ui/src/app/data/paperless-config.ts

@@ -44,12 +44,24 @@ export enum ConfigOptionType {
   Boolean = 'boolean',
   JSON = 'json',
   File = 'file',
+  Password = 'password',
 }
 
 export const ConfigCategory = {
   General: $localize`General Settings`,
   OCR: $localize`OCR Settings`,
   Barcode: $localize`Barcode Settings`,
+  AI: $localize`AI Settings`,
+}
+
+export const LLMEmbeddingBackendConfig = {
+  OPENAI: 'openai',
+  HUGGINGFACE: 'huggingface',
+}
+
+export const LLMBackendConfig = {
+  OPENAI: 'openai',
+  OLLAMA: 'ollama',
 }
 
 export interface ConfigOption {
@@ -59,6 +71,7 @@ export interface ConfigOption {
   choices?: Array<{ id: string; name: string }>
   config_key?: string
   category: string
+  note?: string
 }
 
 function mapToItems(enumObj: Object): Array<{ id: string; name: string }> {
@@ -258,6 +271,58 @@ export const PaperlessConfigOptions: ConfigOption[] = [
     config_key: 'PAPERLESS_CONSUMER_TAG_BARCODE_MAPPING',
     category: ConfigCategory.Barcode,
   },
+  {
+    key: 'ai_enabled',
+    title: $localize`AI Enabled`,
+    type: ConfigOptionType.Boolean,
+    config_key: 'PAPERLESS_AI_ENABLED',
+    category: ConfigCategory.AI,
+    note: $localize`Consider privacy implications when enabling AI features, especially if using a remote model.`,
+  },
+  {
+    key: 'llm_embedding_backend',
+    title: $localize`LLM Embedding Backend`,
+    type: ConfigOptionType.Select,
+    choices: mapToItems(LLMEmbeddingBackendConfig),
+    config_key: 'PAPERLESS_AI_LLM_EMBEDDING_BACKEND',
+    category: ConfigCategory.AI,
+  },
+  {
+    key: 'llm_embedding_model',
+    title: $localize`LLM Embedding Model`,
+    type: ConfigOptionType.String,
+    config_key: 'PAPERLESS_AI_LLM_EMBEDDING_MODEL',
+    category: ConfigCategory.AI,
+  },
+  {
+    key: 'llm_backend',
+    title: $localize`LLM Backend`,
+    type: ConfigOptionType.Select,
+    choices: mapToItems(LLMBackendConfig),
+    config_key: 'PAPERLESS_AI_LLM_BACKEND',
+    category: ConfigCategory.AI,
+  },
+  {
+    key: 'llm_model',
+    title: $localize`LLM Model`,
+    type: ConfigOptionType.String,
+    config_key: 'PAPERLESS_AI_LLM_MODEL',
+    category: ConfigCategory.AI,
+  },
+  {
+    key: 'llm_api_key',
+    title: $localize`LLM API Key`,
+    type: ConfigOptionType.Password,
+    config_key: 'PAPERLESS_AI_LLM_API_KEY',
+    category: ConfigCategory.AI,
+  },
+  {
+    key: 'llm_endpoint',
+    title: $localize`LLM Endpoint`,
+    type: ConfigOptionType.String,
+    config_key: 'PAPERLESS_AI_LLM_ENDPOINT',
+    category: ConfigCategory.AI,
+  },
 ]
 
 export interface PaperlessConfig extends ObjectWithId {
@@ -287,4 +352,11 @@ export interface PaperlessConfig extends ObjectWithId {
   barcode_max_pages: number
   barcode_enable_tag: boolean
   barcode_tag_mapping: object
+  ai_enabled: boolean
+  llm_embedding_backend: string
+  llm_embedding_model: string
+  llm_backend: string
+  llm_model: string
+  llm_api_key: string
+  llm_endpoint: string
 }

src-ui/src/app/data/paperless-task.ts

@@ -11,6 +11,7 @@ export enum PaperlessTaskName {
   TrainClassifier = 'train_classifier',
   SanityCheck = 'check_sanity',
   IndexOptimize = 'index_optimize',
+  LLMIndexUpdate = 'llmindex_update',
 }
 
 export enum PaperlessTaskStatus {

src-ui/src/app/data/system-status.ts

@@ -7,6 +7,7 @@ export enum SystemStatusItemStatus {
   OK = 'OK',
   ERROR = 'ERROR',
   WARNING = 'WARNING',
+  DISABLED = 'DISABLED',
 }
 
 export interface SystemStatus {
@@ -43,6 +44,9 @@ export interface SystemStatus {
     sanity_check_status: SystemStatusItemStatus
     sanity_check_last_run: string // ISO date string
     sanity_check_error: string
+    llmindex_status: SystemStatusItemStatus
+    llmindex_last_modified: string // ISO date string
+    llmindex_error: string
   }
   websocket_connected?: SystemStatusItemStatus // added client-side
 }

src-ui/src/app/data/ui-settings.ts

@@ -76,6 +76,7 @@ export const SETTINGS_KEYS = {
   GMAIL_OAUTH_URL: 'gmail_oauth_url',
   OUTLOOK_OAUTH_URL: 'outlook_oauth_url',
   EMAIL_ENABLED: 'email_enabled',
+  AI_ENABLED: 'ai_enabled',
 }
 
 export const SETTINGS: UiSetting[] = [
@@ -289,4 +290,9 @@ export const SETTINGS: UiSetting[] = [
     type: 'string',
     default: 'page-width', // ZoomSetting from 'document-detail.component'
   },
+  {
+    key: SETTINGS_KEYS.AI_ENABLED,
+    type: 'boolean',
+    default: false,
+  },
 ]

src-ui/src/app/interceptors/csrf.interceptor.ts

@@ -4,15 +4,15 @@ import {
   HttpInterceptor,
   HttpRequest,
 } from '@angular/common/http'
-import { Injectable, inject } from '@angular/core'
+import { inject, Injectable } from '@angular/core'
 import { Meta } from '@angular/platform-browser'
 import { CookieService } from 'ngx-cookie-service'
 import { Observable } from 'rxjs'
 
 @Injectable()
 export class CsrfInterceptor implements HttpInterceptor {
-  private cookieService = inject(CookieService)
-  private meta = inject(Meta)
+  private cookieService: CookieService = inject(CookieService)
+  private meta: Meta = inject(Meta)
 
   intercept(
     request: HttpRequest<unknown>,

src-ui/src/app/services/chat.service.spec.ts

@@ -0,0 +1,58 @@
+import {
+  HttpEventType,
+  provideHttpClient,
+  withInterceptorsFromDi,
+} from '@angular/common/http'
+import {
+  HttpTestingController,
+  provideHttpClientTesting,
+} from '@angular/common/http/testing'
+import { TestBed } from '@angular/core/testing'
+import { environment } from 'src/environments/environment'
+import { ChatService } from './chat.service'
+
+describe('ChatService', () => {
+  let service: ChatService
+  let httpMock: HttpTestingController
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      imports: [],
+      providers: [
+        ChatService,
+        provideHttpClient(withInterceptorsFromDi()),
+        provideHttpClientTesting(),
+      ],
+    })
+    service = TestBed.inject(ChatService)
+    httpMock = TestBed.inject(HttpTestingController)
+  })
+
+  afterEach(() => {
+    httpMock.verify()
+  })
+
+  it('should stream chat messages', (done) => {
+    const documentId = 1
+    const prompt = 'Hello, world!'
+    const mockResponse = 'Partial response text'
+    const apiUrl = `${environment.apiBaseUrl}documents/chat/`
+
+    service.streamChat(documentId, prompt).subscribe((chunk) => {
+      expect(chunk).toBe(mockResponse)
+      done()
+    })
+
+    const req = httpMock.expectOne(apiUrl)
+    expect(req.request.method).toBe('POST')
+    expect(req.request.body).toEqual({
+      document_id: documentId,
+      q: prompt,
+    })
+
+    req.event({
+      type: HttpEventType.DownloadProgress,
+      partialText: mockResponse,
+    } as any)
+  })
+})

src-ui/src/app/services/chat.service.ts

@@ -0,0 +1,46 @@
+import {
+  HttpClient,
+  HttpDownloadProgressEvent,
+  HttpEventType,
+} from '@angular/common/http'
+import { inject, Injectable } from '@angular/core'
+import { filter, map, Observable } from 'rxjs'
+import { environment } from 'src/environments/environment'
+
+export interface ChatMessage {
+  role: 'user' | 'assistant'
+  content: string
+  isStreaming?: boolean
+}
+
+@Injectable({
+  providedIn: 'root',
+})
+export class ChatService {
+  private http: HttpClient = inject(HttpClient)
+
+  streamChat(documentId: number, prompt: string): Observable<string> {
+    return this.http
+      .post(
+        `${environment.apiBaseUrl}documents/chat/`,
+        {
+          document_id: documentId,
+          q: prompt,
+        },
+        {
+          observe: 'events',
+          reportProgress: true,
+          responseType: 'text',
+          withCredentials: true,
+        }
+      )
+      .pipe(
+        map((event) => {
+          if (event.type === HttpEventType.DownloadProgress) {
+            return (event as HttpDownloadProgressEvent).partialText!
+          }
+        }),
+        filter((chunk) => !!chunk)
+      )
+  }
+}

src-ui/src/main.ts

@@ -10,6 +10,7 @@ import { DatePipe, registerLocaleData } from '@angular/common'
 import {
   HTTP_INTERCEPTORS,
   provideHttpClient,
+  withFetch,
   withInterceptorsFromDi,
 } from '@angular/common/http'
 import { FormsModule, ReactiveFormsModule } from '@angular/forms'
@@ -49,6 +50,7 @@ import {
   caretDown,
   caretUp,
   chatLeftText,
+  chatSquareDots,
   check,
   check2All,
   checkAll,
@@ -124,6 +126,7 @@ import {
   sliders2Vertical,
   sortAlphaDown,
   sortAlphaUpAlt,
+  stars,
   tag,
   tagFill,
   tags,
@@ -266,6 +269,7 @@ const icons = {
   caretDown,
   caretUp,
   chatLeftText,
+  chatSquareDots,
   check,
   check2All,
   checkAll,
@@ -341,6 +345,7 @@ const icons = {
   sliders2Vertical,
   sortAlphaDown,
   sortAlphaUpAlt,
+  stars,
   tagFill,
   tag,
   tags,
@@ -407,6 +412,6 @@ bootstrapApplication(AppComponent, {
     CorrespondentNamePipe,
     DocumentTypeNamePipe,
     StoragePathNamePipe,
-    provideHttpClient(withInterceptorsFromDi()),
+    provideHttpClient(withInterceptorsFromDi(), withFetch()),
   ],
 }).catch((err) => console.error(err))