fix: properly handle search within a single entry (#855)

packages/core/src/backend.ts

@@ -45,6 +45,7 @@ import { DRAFT_MEDIA_FILES, selectMediaFilePublicPath } from './lib/util/media.u
 import { selectCustomPath, slugFromCustomPath } from './lib/util/nested.util';
 import { isNullish } from './lib/util/null.util';
 import { set } from './lib/util/object.util';
+import { fileSearch, sortByScore } from './lib/util/search.util';
 import { dateParsers, expandPath, extractTemplateVars } from './lib/widgets/stringTemplate';
 import createEntry from './valueObjects/createEntry';
 
@@ -251,18 +252,6 @@ export function mergeExpandedEntries(entries: (Entry & { field: string })[]): En
   return Object.values(merged);
 }
 
-export function sortByScore(a: fuzzy.FilterResult<Entry>, b: fuzzy.FilterResult<Entry>) {
-  if (a.score > b.score) {
-    return -1;
-  }
-
-  if (a.score < b.score) {
-    return 1;
-  }
-
-  return 0;
-}
-
 interface AuthStore {
   retrieve: () => User;
   store: (user: User) => void;
@@ -605,9 +594,18 @@ export class Backend<EF extends BaseField = UnknownField, BC extends BackendClas
     file?: string,
     limit?: number,
   ): Promise<SearchQueryResponse> {
-    let entries = await this.listAllEntries(collection as Collection);
+    const entries = await this.listAllEntries(collection as Collection);
     if (file) {
-      entries = entries.filter(e => e.slug === file);
+      let hits = fileSearch(
+        entries.find(e => e.slug === file),
+        searchFields,
+        searchTerm,
+      );
+      if (limit !== undefined && limit > 0) {
+        hits = hits.slice(0, limit);
+      }
+
+      return { query: searchTerm, hits };
     }
 
     const expandedEntries = expandSearchEntries(entries, searchFields);

packages/core/src/lib/util/__tests__/search.util.spec.ts

@@ -0,0 +1,76 @@
+import { createMockEntry } from '@staticcms/test/data/entry.mock';
+import { fileSearch } from '../search.util';
+
+const rightIcon = {
+  name: 'right',
+  type: 'control',
+  icon: '/src/icons/right.svg',
+};
+
+const leftIcon = {
+  name: 'left',
+  type: 'control',
+  icon: '/src/icons/left.svg',
+};
+
+const zoomIcon = {
+  name: 'zoom',
+  type: 'action',
+  icon: '/src/icons/zoom.svg',
+};
+
+const downloadIcon = {
+  name: 'download',
+  type: 'action',
+  icon: '/src/icons/download.svg',
+};
+
+const nestedList = createMockEntry({
+  data: {
+    icons: [rightIcon, leftIcon, downloadIcon, zoomIcon],
+  },
+});
+
+describe('search.util', () => {
+  describe('fileSearch', () => {
+    it('filters nested array', () => {
+      expect(fileSearch(nestedList, ['icons.*.name'], 'zoom')).toEqual([
+        createMockEntry({
+          data: {
+            icons: [zoomIcon],
+          },
+          raw: nestedList.raw,
+        }),
+      ]);
+
+      expect(fileSearch(nestedList, ['icons.*.name'], 'bad input')).toEqual([
+        createMockEntry({
+          data: {
+            icons: [],
+          },
+          raw: nestedList.raw,
+        }),
+      ]);
+    });
+
+    it('filters nested array on multiple search fields', () => {
+      expect(fileSearch(nestedList, ['icons.*.name', 'icons.*.type'], 'action')).toEqual([
+        createMockEntry({
+          data: {
+            icons: [downloadIcon, zoomIcon],
+          },
+          raw: nestedList.raw,
+        }),
+      ]);
+
+      expect(fileSearch(nestedList, ['icons.*.name', 'icons.*.type'], 'down')).toEqual([
+        createMockEntry({
+          data: {
+            icons: [downloadIcon],
+          },
+          raw: nestedList.raw,
+        }),
+      ]);
+    });
+  });
+});

packages/core/src/lib/util/search.util.ts

@@ -0,0 +1,94 @@
+import deepmerge from 'deepmerge';
+import * as fuzzy from 'fuzzy';
+
+import type { Entry, ObjectValue, ValueOrNestedValue } from '@staticcms/core/interface';
+
+function filter(
+  value: ValueOrNestedValue,
+  remainingPath: string[],
+  searchTerm: string,
+): ValueOrNestedValue {
+  if (Array.isArray(value)) {
+    const [nextPath, ...rest] = remainingPath;
+    if (nextPath !== '*') {
+      return value;
+    }
+
+    if (rest.length === 1) {
+      const validOptions = value.filter(e => {
+        if (!e || Array.isArray(e) || typeof e !== 'object' || e instanceof Date) {
+          return false;
+        }
+
+        return true;
+      }) as ObjectValue[];
+
+      return validOptions.length > 0
+        ? fuzzy
+            .filter(searchTerm, validOptions, {
+              extract: input => {
+                return String(input[rest[0]]);
+              },
+            })
+            .sort(sortByScore)
+            .map(f => f.original)
+        : [];
+    }
+
+    return value.map(childValue => {
+      return filter(childValue, rest, searchTerm);
+    });
+  }
+
+  if (value && typeof value === 'object' && !(value instanceof Date)) {
+    const newValue = { ...value };
+
+    const [nextPath, ...rest] = remainingPath;
+
+    const childValue = newValue[nextPath];
+    if (
+      childValue &&
+      (Array.isArray(childValue) ||
+        (typeof childValue === 'object' && !(childValue instanceof Date)))
+    ) {
+      newValue[nextPath] = filter(childValue, rest, searchTerm);
+    }
+
+    return newValue;
+  }
+
+  return value;
+}
+
+export function fileSearch(
+  entry: Entry | undefined,
+  searchFields: string[],
+  searchTerm: string,
+): Entry[] {
+  if (!entry) {
+    return [];
+  }
+
+  return [
+    {
+      ...entry,
+      data: searchFields.reduce(
+        (acc, searchField) =>
+          deepmerge(acc, filter(entry.data, searchField.split('.'), searchTerm) as ObjectValue),
+        {},
+      ),
+    },
+  ];
+}
+
+export function sortByScore<T>(a: fuzzy.FilterResult<T>, b: fuzzy.FilterResult<T>) {
+  if (a.score > b.score) {
+    return -1;
+  }
+
+  if (a.score < b.score) {
+    return 1;
+  }
+
+  return 0;
+}

packages/core/src/widgets/relation/RelationControl.tsx

@@ -8,13 +8,13 @@ import {
   expandSearchEntries,
   getEntryField,
   mergeExpandedEntries,
-  sortByScore,
 } from '@staticcms/core/backend';
 import Autocomplete from '@staticcms/core/components/common/autocomplete/Autocomplete';
 import Field from '@staticcms/core/components/common/field/Field';
 import Pill from '@staticcms/core/components/common/pill/Pill';
 import CircularProgress from '@staticcms/core/components/common/progress/CircularProgress';
 import { isNullish } from '@staticcms/core/lib/util/null.util';
+import { fileSearch, sortByScore } from '@staticcms/core/lib/util/search.util';
 import { isEmpty } from '@staticcms/core/lib/util/string.util';
 import {
   addFileTemplateFields,
@@ -28,6 +28,7 @@ import { useAppSelector } from '@staticcms/core/store/hooks';
 import type {
   Entry,
   EntryData,
+  ObjectValue,
   RelationField,
   WidgetControlProps,
 } from '@staticcms/core/interface';
@@ -189,18 +190,33 @@ const RelationControl: FC<WidgetControlProps<string | string[], RelationField>>
       }
 
       const searchFields = field.search_fields;
+      const file = field.file;
       const limit = field.options_length || DEFAULT_OPTIONS_LIMIT;
+
+      let hits: Entry<ObjectValue>[];
+
+      if (file) {
+        hits = fileSearch(
+          entries.find(e => e.slug === file),
+          searchFields,
+          inputValue,
+        );
+        console.log('file', file, 'hits', hits);
+      } else {
         const expandedEntries = expandSearchEntries(entries, searchFields);
-      const hits = fuzzy
+        hits = mergeExpandedEntries(
+          fuzzy
             .filter(inputValue, expandedEntries, {
               extract: entry => {
                 return getEntryField(entry.field, entry);
               },
             })
             .sort(sortByScore)
-        .map(f => f.original);
+            .map(f => f.original),
+        );
+      }
 
-      let options = uniqBy(parseHitOptions(mergeExpandedEntries(hits)), o => o.value);
+      let options = uniqBy(parseHitOptions(hits), o => o.value);
 
       if (limit !== undefined && limit > 0) {
         options = options.slice(0, limit);
@@ -208,7 +224,7 @@ const RelationControl: FC<WidgetControlProps<string | string[], RelationField>>
 
       setOptions(options);
     },
-    [entries, field.options_length, field.search_fields, parseHitOptions],
+    [entries, field.file, field.options_length, field.search_fields, parseHitOptions],
   );
 
   useEffect(() => {