From 28f33763cc0ecaa38030de92ccef4b7ff9f70be8 Mon Sep 17 00:00:00 2001
From: shamoon <4887959+shamoon@users.noreply.github.com>
Date: Sat, 5 Sep 2026 09:41:13 -0700
Subject: [PATCH] Add the duplicates filter to frontend query-params

---
 src-ui/src/app/data/filter-rule-type.ts   |  8 ++++++++
 src-ui/src/app/utils/query-params.spec.ts | 23 +++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/src-ui/src/app/data/filter-rule-type.ts b/src-ui/src/app/data/filter-rule-type.ts
index 6330eb44c..5feaf3867 100644
--- a/src-ui/src/app/data/filter-rule-type.ts
+++ b/src-ui/src/app/data/filter-rule-type.ts
@@ -49,6 +49,7 @@ export const FILTER_MODIFIED_AFTER = 16
 export const FILTER_TITLE_CONTENT = 19 // Deprecated in favor of Tantivy-backed `text` filtervar. Keep for now for existing saved views
 export const FILTER_SIMPLE_TITLE = 48
 export const FILTER_SIMPLE_TEXT = 49
+export const FILTER_HAS_DUPLICATES = 50
 export const FILTER_FULLTEXT_QUERY = 20
 export const FILTER_FULLTEXT_MORELIKE = 21
 
@@ -382,6 +383,13 @@ export const FILTER_RULE_TYPES: FilterRuleType[] = [
     datatype: 'string',
     multi: false,
   },
+  {
+    id: FILTER_HAS_DUPLICATES,
+    filtervar: 'has_duplicates',
+    datatype: 'boolean',
+    multi: false,
+    default: true,
+  },
 ]
 
 export interface FilterRuleType {
diff --git a/src-ui/src/app/utils/query-params.spec.ts b/src-ui/src/app/utils/query-params.spec.ts
index 7fd8f6808..7137ed53b 100644
--- a/src-ui/src/app/utils/query-params.spec.ts
+++ b/src-ui/src/app/utils/query-params.spec.ts
@@ -7,6 +7,7 @@ import {
   FILTER_HAS_ANY_TAG,
   FILTER_HAS_CUSTOM_FIELDS_ALL,
   FILTER_HAS_CUSTOM_FIELDS_ANY,
+  FILTER_HAS_DUPLICATES,
   FILTER_HAS_TAGS_ALL,
   FILTER_SIMPLE_TEXT,
   FILTER_SIMPLE_TITLE,
@@ -132,6 +133,16 @@ describe('QueryParams Utils', () => {
       is_tagged: 0,
     })
 
+    params = queryParamsFromFilterRules([
+      {
+        rule_type: FILTER_HAS_DUPLICATES,
+        value: 'false',
+      },
+    ])
+    expect(params).toEqual({
+      has_duplicates: 0,
+    })
+
     params = queryParamsFromFilterRules([
       {
         rule_type: FILTER_TITLE_CONTENT,
@@ -247,6 +258,18 @@ describe('QueryParams Utils', () => {
       },
     ])
 
+    rules = filterRulesFromQueryParams(
+      convertToParamMap({
+        has_duplicates: 'true',
+      })
+    )
+    expect(rules).toEqual([
+      {
+        rule_type: FILTER_HAS_DUPLICATES,
+        value: 'true',
+      },
+    ])
+
     rules = filterRulesFromQueryParams(
       convertToParamMap({
         correspondent__isnull: '1',