From b57ccd06165c8efdf9f35b3a0d760ec2a2e52498 Mon Sep 17 00:00:00 2001
From: Hongbo Wu <hongbo@omnivore.app>
Date: Fri, 21 Apr 2023 17:39:04 +0800
Subject: [PATCH] Allow wildcards in query filter

---
 packages/api/src/elastic/pages.ts | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/packages/api/src/elastic/pages.ts b/packages/api/src/elastic/pages.ts
index 1d2262867..8b39cf200 100644
--- a/packages/api/src/elastic/pages.ts
+++ b/packages/api/src/elastic/pages.ts
@@ -27,10 +27,24 @@ import {
 } from './types'
 
 const appendQuery = (builder: ESBuilder, query: string): ESBuilder => {
+  const fields = ['title', 'content', 'author', 'description', 'siteName']
+  if (query.includes('*')) {
+    // wildcard query
+    fields.forEach((field) => {
+      builder = builder.orQuery('wildcard', {
+        [field]: {
+          value: query,
+          case_insensitive: true,
+        },
+      })
+    })
+    return builder.queryMinimumShouldMatch(1)
+  }
+
   return builder
     .orQuery('multi_match', {
       query,
-      fields: ['title', 'content', 'author', 'description', 'siteName'],
+      fields,
       operator: 'and',
       type: 'cross_fields',
     })