Take activeAt in account when using fuse.js index

ts/util/filterAndSortConversations.ts

@@ -5,12 +5,19 @@ import Fuse from 'fuse.js';
 
 import type { ConversationType } from '../state/ducks/conversations';
 import { parseAndFormatPhoneNumber } from './libphonenumberInstance';
+import { WEEK } from './durations';
+
+// Fuse.js scores have order of 0.01
+const ACTIVE_AT_SCORE_FACTOR = (1 / WEEK) * 0.01;
 
 const FUSE_OPTIONS: Fuse.IFuseOptions<ConversationType> = {
   // A small-but-nonzero threshold lets us match parts of E164s better, and makes the
   //   search a little more forgiving.
   threshold: 0.2,
+  includeScore: true,
   useExtendedSearch: true,
+  // We sort manually anyway
+  shouldSort: true,
   keys: [
     {
       name: 'searchableTitle',
@@ -71,14 +78,14 @@ function searchConversations(
   conversations: ReadonlyArray<ConversationType>,
   searchTerm: string,
   regionCode: string | undefined
-): Array<ConversationType> {
+): ReadonlyArray<Pick<Fuse.FuseResult<ConversationType>, 'item' | 'score'>> {
   const maybeCommand = searchTerm.match(/^!([^\s]+):(.*)$/);
   if (maybeCommand) {
     const [, commandName, query] = maybeCommand;
 
     const command = COMMANDS.get(commandName);
     if (command) {
-      return command(conversations, query);
+      return command(conversations, query).map(item => ({ item }));
     }
   }
 
@@ -98,8 +105,7 @@ function searchConversations(
     cachedIndices.set(conversations, index);
   }
 
-  const results = index.search(extendedSearchTerm);
-  return results.map(result => result.item);
+  return index.search(extendedSearchTerm);
 }
 
 export function filterAndSortConversationsByRecent(
@@ -108,7 +114,24 @@ export function filterAndSortConversationsByRecent(
   regionCode: string | undefined
 ): Array<ConversationType> {
   if (searchTerm.length) {
-    return searchConversations(conversations, searchTerm, regionCode);
+    const now = Date.now();
+
+    return searchConversations(conversations, searchTerm, regionCode)
+      .slice()
+      .sort((a, b) => {
+        const { activeAt: aActiveAt = 0 } = a.item;
+        const { activeAt: bActiveAt = 0 } = b.item;
+
+        // See: https://fusejs.io/api/options.html#includescore
+        // 0 score is a perfect match, 1 - complete mismatch
+        const aScore =
+          (now - aActiveAt) * ACTIVE_AT_SCORE_FACTOR + (a.score ?? 0);
+        const bScore =
+          (now - bActiveAt) * ACTIVE_AT_SCORE_FACTOR + (b.score ?? 0);
+
+        return aScore - bScore;
+      })
+      .map(result => result.item);
   }
 
   return conversations.concat().sort((a, b) => {
@@ -126,7 +149,12 @@ export function filterAndSortConversationsByTitle(
   regionCode: string | undefined
 ): Array<ConversationType> {
   if (searchTerm.length) {
-    return searchConversations(conversations, searchTerm, regionCode);
+    return searchConversations(conversations, searchTerm, regionCode)
+      .slice()
+      .sort((a, b) => {
+        return (a.score ?? 0) - (b.score ?? 0);
+      })
+      .map(result => result.item);
   }
 
   return conversations.concat().sort((a, b) => {