frontend support for fulltext sorting

src-ui/messages.xlf

@@ -1889,6 +1889,14 @@
           <context context-type="linenumber">23</context>
         </context-group>
       </trans-unit>
+      <trans-unit id="4460262093225954455" datatype="html">
+        <source>Search score</source>
+        <context-group purpose="location">
+          <context context-type="sourcefile">src/app/services/rest/document.service.ts</context>
+          <context context-type="linenumber">28</context>
+        </context-group>
+        <note priority="1" from="description">Score is a value returned by the full text search engine and specifies how well a result matches the given query</note>
+      </trans-unit>
       <trans-unit id="4561076822163447092" datatype="html">
         <source>Create new item</source>
         <context-group purpose="location">

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

@@ -2,14 +2,14 @@ import { Component, OnDestroy, OnInit, QueryList, ViewChild, ViewChildren } from
 import { ActivatedRoute, Router } from '@angular/router';
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
 import { Subscription } from 'rxjs';
-import { FilterRule } from 'src/app/data/filter-rule';
+import { FilterRule, isFullTextFilterRule } from 'src/app/data/filter-rule';
 import { FILTER_FULLTEXT_MORELIKE } from 'src/app/data/filter-rule-type';
 import { PaperlessDocument } from 'src/app/data/paperless-document';
 import { PaperlessSavedView } from 'src/app/data/paperless-saved-view';
 import { SortableDirective, SortEvent } from 'src/app/directives/sortable.directive';
 import { ConsumerStatusService } from 'src/app/services/consumer-status.service';
 import { DocumentListViewService } from 'src/app/services/document-list-view.service';
-import { DOCUMENT_SORT_FIELDS } from 'src/app/services/rest/document.service';
+import { DOCUMENT_SORT_FIELDS, DOCUMENT_SORT_FIELDS_FULLTEXT } from 'src/app/services/rest/document.service';
 import { SavedViewService } from 'src/app/services/rest/saved-view.service';
 import { ToastService } from 'src/app/services/toast.service';
 import { FilterEditorComponent } from './filter-editor/filter-editor.component';
@@ -52,7 +52,7 @@ export class DocumentListComponent implements OnInit, OnDestroy {
   }
 
   getSortFields() {
-    return DOCUMENT_SORT_FIELDS
+    return isFullTextFilterRule(this.list.filterRules) ? DOCUMENT_SORT_FIELDS_FULLTEXT : DOCUMENT_SORT_FIELDS
   }
 
   onSort(event: SortEvent) {

src-ui/src/app/data/filter-rule.ts

@@ -1,3 +1,5 @@
+import { FILTER_FULLTEXT_MORELIKE, FILTER_FULLTEXT_QUERY } from "./filter-rule-type"
+
 export function cloneFilterRules(filterRules: FilterRule[]): FilterRule[] {
   if (filterRules) {
     let newRules: FilterRule[] = []
@@ -10,6 +12,10 @@ export function cloneFilterRules(filterRules: FilterRule[]): FilterRule[] {
   }
 }
 
+export function isFullTextFilterRule(filterRules: FilterRule[]): boolean {
+  return filterRules.find(r => r.rule_type == FILTER_FULLTEXT_QUERY || r.rule_type == FILTER_FULLTEXT_MORELIKE) != null
+}
+
 export interface FilterRule {
   rule_type: number
   value: string

src-ui/src/app/services/document-list-view.service.ts

@@ -1,28 +1,53 @@
 import { Injectable } from '@angular/core';
 import { ActivatedRoute, Router } from '@angular/router';
 import { Observable } from 'rxjs';
-import { cloneFilterRules, FilterRule } from '../data/filter-rule';
-import { FILTER_FULLTEXT_MORELIKE, FILTER_FULLTEXT_QUERY } from '../data/filter-rule-type';
+import { cloneFilterRules, FilterRule, isFullTextFilterRule } from '../data/filter-rule';
 import { PaperlessDocument } from '../data/paperless-document';
 import { PaperlessSavedView } from '../data/paperless-saved-view';
 import { DOCUMENT_LIST_SERVICE } from '../data/storage-keys';
 import { DocumentService } from './rest/document.service';
 import { SettingsService, SETTINGS_KEYS } from './settings.service';
 
+/**
+ * Captures the current state of the list view.
+ */
 interface ListViewState {
 
+  /**
+   * Title of the document list view. Either "Documents" (localized) or the name of a saved view.
+   */
   title?: string
 
+  /**
+   * Current paginated list of documents displayed.
+   */
   documents?: PaperlessDocument[]
 
   currentPage: number
+
+  /**
+   * Total amount of documents with the current filter rules. Used to calculate the number of pages.
+   */
   collectionSize: number
 
+  /**
+   * Currently selected sort field.
+   */
   sortField: string
+
+  /**
+   * True if the list is sorted in reverse.
+   */
   sortReverse: boolean
 
+  /**
+   * Filter rules for the current list view.
+   */
   filterRules: FilterRule[]
 
+  /**
+   * Contains the IDs of all selected documents.
+   */
   selected?: Set<number>
 
 }
@@ -134,10 +159,10 @@ export class DocumentListViewService {
   }
 
   set filterRules(filterRules: FilterRule[]) {
-    this.activeListViewState.filterRules = filterRules
-    if (filterRules.find(r => (r.rule_type == FILTER_FULLTEXT_QUERY || r.rule_type == FILTER_FULLTEXT_MORELIKE))) {
-      this.activeListViewState.currentPage = 1
+    if (!isFullTextFilterRule(filterRules) && this.activeListViewState.sortField == "score") {
+      this.activeListViewState.sortField = "created"
     }
+    this.activeListViewState.filterRules = filterRules
     this.reload()
     this.reduceSelectionToFilter()
     this.saveDocumentListView()
@@ -213,6 +238,10 @@ export class DocumentListViewService {
     this._activeSavedViewId = null
     this.activeListViewState.filterRules = filterRules
     this.activeListViewState.currentPage = 1
+    if (isFullTextFilterRule(filterRules)) {
+      this.activeListViewState.sortField = "score"
+      this.activeListViewState.sortReverse = false
+    }
     this.reduceSelectionToFilter()
     this.saveDocumentListView()
     if (this.router.url == "/documents") {

src-ui/src/app/services/rest/document.service.ts

@@ -23,6 +23,11 @@ export const DOCUMENT_SORT_FIELDS = [
   { field: 'modified', name: $localize`Modified` }
 ]
 
+export const DOCUMENT_SORT_FIELDS_FULLTEXT = [
+  ...DOCUMENT_SORT_FIELDS,
+  { field: 'score', name: $localize`:Score is a value returned by the full text search engine and specifies how well a result matches the given query:Search score` }
+]
+
 export interface SelectionDataItem {
   id: number
   document_count: number