feat(ui): book browse field registry, facet and sort query helpers

frontend/src/app/core/data/browse-response.ts

@@ -1,5 +1,6 @@
 import {
   BrowseFacetGroup,
+  BrowseFacetResult,
   BrowseFacetValue,
   BrowseLink,
   BrowsePage,
@@ -41,13 +42,21 @@ export function mapBrowsePage<T>(response: RawBrowsePage<T>): BrowsePage<T> {
   };
 }
 
-export function mapBrowseFacetGroups(response: RawFacetResponse): BrowseFacetGroup[] {
-  return response.facets.map(group => ({
-    rel: group.metadata.rel,
-    key: group.metadata.key,
-    title: group.metadata.title,
-    values: group.links.map(mapBrowseFacetValue),
-  }));
+export function mapBrowseFacetResult(response: RawFacetResponse): BrowseFacetResult {
+  const facets: BrowseFacetGroup[] = [];
+  const sortTokens: string[] = [];
+  for (const group of response.facets) {
+    if (group.metadata.rel === 'facet') {
+      facets.push({
+        key: group.metadata.key,
+        title: group.metadata.title,
+        values: group.links.map(mapBrowseFacetValue),
+      });
+    } else if (group.metadata.rel === 'sort') {
+      sortTokens.push(...group.links.map(link => link.value));
+    }
+  }
+  return {facets, sortTokens};
 }
 
 function mapBrowseLink(raw: RawLink): BrowseLink {

frontend/src/app/core/data/browse.models.ts

@@ -26,12 +26,16 @@ export interface BrowseFacetValue {
 }
 
 export interface BrowseFacetGroup {
-  rel: string;
   key: string;
   title: string;
   values: BrowseFacetValue[];
 }
 
+export interface BrowseFacetResult {
+  facets: BrowseFacetGroup[];
+  sortTokens: string[];
+}
+
 export type BrowseFacetLogic = 'and' | 'or' | 'not';
 export type BrowseSortDirection = 'asc' | 'desc';
 

frontend/src/app/features/book/browse/book-browse-columns.ts

@@ -0,0 +1,146 @@
+import {formatMediumDate} from '../../../shared/util/date-format';
+import {formatFileSizeKb} from '../../../shared/util/file-size';
+import {type TableColumnPreference} from '../../settings/user-management/user.service';
+import {type BookQuerySortKey} from '../data/book-query-params';
+import {type BookSummary} from '../data/book-response.models';
+import {
+  COLUMNS,
+  COLUMNS_BY_KEY,
+  COLUMN_GROUP_ORDER,
+  bookReadStatusLabelKey,
+  type BookBrowseColumnGroupId,
+  type BookColumnKey,
+  type BookColumnKind,
+  type BookColumnValue,
+} from './book-browse-fields';
+
+export const BOOK_EMPTY_VALUE = '—';
+
+const DEFAULT_COLUMN_MIN_WIDTH = 84;
+const DEFAULT_COLUMN_MAX_WIDTH = 420;
+const NUMBER_FORMAT = new Intl.NumberFormat();
+
+export interface BookColumnSizing {
+  readonly size: number;
+  readonly minSize: number;
+  readonly maxSize: number;
+}
+
+export interface BookColumnOption {
+  readonly field: BookColumnKey;
+  readonly labelKey: string;
+  readonly visible: boolean;
+  readonly hideable: boolean;
+}
+
+export interface BookBrowseColumnVisibilityChange {
+  readonly field: string;
+  readonly visible: boolean;
+}
+
+export interface BookColumnSection {
+  readonly id: BookBrowseColumnGroupId;
+  readonly columns: readonly BookColumnOption[];
+}
+
+export function normalizeBookColumnPreferences(
+  saved: readonly TableColumnPreference[] | undefined,
+): TableColumnPreference[] {
+  const savedByField = new Map(saved?.map(preference => [preference.field, preference]));
+  return COLUMNS.map(({key, column}, order) => {
+    const preference = savedByField.get(key);
+    return {
+      field: key,
+      visible: column.hideable === false || (preference?.visible ?? column.defaultVisible),
+      order: preference?.order ?? order,
+    };
+  });
+}
+
+export function bookColumnOptions(
+  preferences: readonly TableColumnPreference[],
+): BookColumnOption[] {
+  const visibleByField = new Map(
+    preferences.map(preference => [preference.field, preference.visible]),
+  );
+  return COLUMNS.map(({key, labelKey, column}) => ({
+    field: key,
+    labelKey,
+    visible: visibleByField.get(key) === true,
+    hideable: column.hideable !== false,
+  }));
+}
+
+export function bookVisibleColumnOptions(
+  preferences: readonly TableColumnPreference[],
+): BookColumnOption[] {
+  const orderByField = new Map(preferences.map(preference => [preference.field, preference.order]));
+  const orderOf = (option: BookColumnOption) =>
+    option.field === 'title' ? -1 : orderByField.get(option.field) ?? Number.MAX_SAFE_INTEGER;
+  return bookColumnOptions(preferences)
+    .filter(option => option.visible)
+    .sort((first, second) => orderOf(first) - orderOf(second));
+}
+
+export function bookColumnSections(
+  options: readonly BookColumnOption[],
+): BookColumnSection[] {
+  const optionsByField = new Map(options.map(option => [option.field, option]));
+  return COLUMN_GROUP_ORDER.map(id => ({
+    id,
+    columns: COLUMNS.flatMap(({key, column}) => {
+      const option = column.group === id ? optionsByField.get(key) : undefined;
+      return option ? [option] : [];
+    }),
+  }));
+}
+
+export function bookColumnSortKey(field: string): BookQuerySortKey | undefined {
+  return COLUMNS_BY_KEY.get(field)?.sort?.key;
+}
+
+export function bookColumnKind(field: string): BookColumnKind {
+  return COLUMNS_BY_KEY.get(field)?.column.kind ?? 'text';
+}
+
+export function bookColumnSizing(field: BookColumnKey): BookColumnSizing {
+  const {defaultWidth, minWidth, maxWidth} = COLUMNS_BY_KEY.get(field)!.column;
+  return {
+    size: defaultWidth,
+    minSize: minWidth ?? DEFAULT_COLUMN_MIN_WIDTH,
+    maxSize: maxWidth ?? DEFAULT_COLUMN_MAX_WIDTH,
+  };
+}
+
+export function bookColumnValue(
+  book: BookSummary,
+  field: string,
+): BookColumnValue {
+  return COLUMNS_BY_KEY.get(field)?.column.value(book);
+}
+
+export function formatBookValue(
+  kind: BookColumnKind,
+  value: BookColumnValue,
+  translate: (key: string) => string,
+): string {
+  if (value == null || value === '') {
+    return BOOK_EMPTY_VALUE;
+  }
+  switch (kind) {
+    case 'date':
+      return formatMediumDate(String(value)) || BOOK_EMPTY_VALUE;
+    case 'fileSize':
+      return formatFileSizeKb(Number(value));
+    case 'rating':
+      return Number(value).toFixed(1);
+    case 'number':
+      return NUMBER_FORMAT.format(Number(value));
+    case 'readStatus': {
+      const labelKey = typeof value === 'string' ? bookReadStatusLabelKey(value) : null;
+      return labelKey ? translate(labelKey) : BOOK_EMPTY_VALUE;
+    }
+    case 'text':
+      return String(value);
+  }
+}

frontend/src/app/features/book/browse/book-browse-facet-definitions.spec.ts

@@ -0,0 +1,59 @@
+import {describe, expect, it} from 'vitest';
+
+import {browseFilterGroups, browseFrozenFacetOrders, withBrowseFacetRange} from '../../../shared/browse/facets';
+import {type BrowseFacetGroup} from '../../../core/data/browse.models';
+import {bookFacetDefinitions} from './book-browse-facet-definitions';
+
+function group(key: string, values: [string, number][]): BrowseFacetGroup {
+  return {
+    key,
+    title: key,
+    values: values.map(([value, count]) => ({value, title: value, count, selected: false})),
+  };
+}
+
+const definitions = bookFacetDefinitions({
+  shelf: () => undefined,
+  library: () => undefined,
+  translate: (key: string) => key,
+});
+
+describe('book browse facets', () => {
+  it('keeps the frozen value order when the server re-ranks, narrows or grows a group', () => {
+    const frozen = browseFrozenFacetOrders([group('genre', [['Gothic', 40], ['Comedy', 30], ['Drama', 20]])], definitions);
+
+    const reranked = browseFilterGroups(
+      [group('genre', [['Drama', 90], ['Gothic', 5], ['Comedy', 2]])],
+      frozen,
+      definitions,
+      {},
+    );
+    expect(reranked[0].values.map(item => [item.value, item.count]))
+      .toEqual([['Gothic', 5], ['Comedy', 2], ['Drama', 90]]);
+
+    const narrowed = browseFilterGroups([group('genre', [['Comedy', 7]])], frozen, definitions, {});
+    expect(narrowed[0].values.map(item => [item.value, item.count]))
+      .toEqual([['Comedy', 7], ['Gothic', 0], ['Drama', 0]]);
+
+    const selectedAtZero = browseFilterGroups([group('genre', [['Comedy', 7], ['Gothic', 0]])], frozen, definitions, {genre: ['Gothic']});
+    expect(selectedAtZero[0].values.map(item => item.value)).toEqual(['Gothic', 'Comedy', 'Drama']);
+
+    const grown = browseFilterGroups(
+      [group('genre', [['Farce', 3], ['Gothic', 40], ['Comedy', 30], ['Drama', 20]])],
+      frozen,
+      definitions,
+      {},
+    );
+    expect(grown[0].values.map(item => item.value)).toEqual(['Gothic', 'Comedy', 'Drama', 'Farce']);
+  });
+
+  it('replaces a numeric range token rather than stacking it, and keeps band selections', () => {
+    let selection = withBrowseFacetRange({}, 'page_count', 100, 400, definitions);
+    expect(selection).toEqual({page_count: ['100..400']});
+    selection = withBrowseFacetRange(selection, 'page_count', null, 200, definitions);
+    expect(selection).toEqual({page_count: ['*..200']});
+    expect(withBrowseFacetRange(selection, 'page_count', null, null, definitions)).toEqual({});
+    expect(withBrowseFacetRange({match_score: ['70..80']}, 'match_score', 30, 90, definitions))
+      .toEqual({match_score: ['70..80', '30..90']});
+  });
+});

frontend/src/app/features/book/browse/book-browse-facet-definitions.ts

@@ -0,0 +1,71 @@
+import {type BrowseFacetDefinitions} from '../../../shared/browse/facets';
+import {
+  BOOK_QUERY_FACET_KEYS,
+  isBookQueryFacetKey,
+  type BookQueryFacetKey,
+} from '../data/book-query-params';
+import {type BookSummary} from '../data/book-response.models';
+import {
+  COLUMNS_BY_KEY,
+  FACET_FIELDS,
+  OPEN_RAIL_FACETS,
+  type BookFacetEntity,
+  type BookFacetLabelDeps,
+} from './book-browse-fields';
+
+export interface BookFacetLink {
+  readonly key: BookQueryFacetKey;
+  readonly value: string;
+}
+
+interface BookFacetEntityWithId extends BookFacetEntity {
+  readonly id?: string | number;
+}
+
+export function bookFacetLabelDeps(
+  shelves: readonly BookFacetEntityWithId[],
+  libraries: readonly BookFacetEntityWithId[],
+  translate: (key: string) => string,
+): BookFacetLabelDeps {
+  const byId = (entities: readonly BookFacetEntityWithId[]) =>
+    new Map(entities.map(entity => [`${entity.id}`, entity]));
+  const shelvesById = byId(shelves);
+  const librariesById = byId(libraries);
+  return {
+    shelf: id => shelvesById.get(id),
+    library: id => librariesById.get(id),
+    translate,
+  };
+}
+
+function registeredFacetLabelKey(key: BookQueryFacetKey): string {
+  return FACET_FIELDS.get(key)!.labelKey;
+}
+
+export function bookFacetDefinitions(deps: BookFacetLabelDeps): BrowseFacetDefinitions<BookQueryFacetKey> {
+  return {
+    order: BOOK_QUERY_FACET_KEYS,
+    isKey: isBookQueryFacetKey,
+    labelKey: registeredFacetLabelKey,
+    openByDefault: OPEN_RAIL_FACETS,
+    kind: key => FACET_FIELDS.get(key)?.facet.kind,
+    valueOrder: key => FACET_FIELDS.get(key)?.facet.order,
+    valueDomain: key => FACET_FIELDS.get(key)?.facet.domain,
+    valueBuckets: key => FACET_FIELDS.get(key)?.facet.buckets,
+    fileSize: key => FACET_FIELDS.get(key)?.facet.fileSize ?? false,
+    valueLabel: (key, value) => FACET_FIELDS.get(key)?.facet.valueLabel?.(value, deps) ?? null,
+    valueIcon: (key, value) => FACET_FIELDS.get(key)?.facet.valueIcon?.(value, deps) ?? null,
+  };
+}
+
+export function bookFacetLinks(
+  book: BookSummary,
+  columnField: string,
+): readonly BookFacetLink[] {
+  const facet = COLUMNS_BY_KEY.get(columnField)?.facet;
+  if (!facet?.bookValues) {
+    return [];
+  }
+  const key = facet.key;
+  return facet.bookValues(book).map(value => ({key, value}));
+}