From 70c64a9251366b9b76146f180337e7246fd84af6 Mon Sep 17 00:00:00 2001
From: Eugene <me@shadowsparky.ru>
Date: Sun, 9 Aug 2026 18:23:35 +0300
Subject: [PATCH] use fuzzykot library

---
 apps/vbox/backend/build.gradle.kts            |  1 +
 .../vbox/backend/data/FuzzySearchFilter.kt    | 20 ++++---------------
 gradle/libs.versions.toml                     |  2 ++
 3 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/apps/vbox/backend/build.gradle.kts b/apps/vbox/backend/build.gradle.kts
index a8777f5..1be004d 100644
--- a/apps/vbox/backend/build.gradle.kts
+++ b/apps/vbox/backend/build.gradle.kts
@@ -35,6 +35,7 @@ dependencies {
     implementation(libs.ktor.server.websockets.jvm)
     implementation(libs.ktor.server.cors)
 
+    implementation(libs.fuzzykot)
     implementation(libs.androidx.datastore.preferences.core)
     implementation(libs.kxml2)
     implementation(libs.jsoup)
diff --git a/apps/vbox/backend/src/main/kotlin/ru/shadowsparky/vbox/backend/data/FuzzySearchFilter.kt b/apps/vbox/backend/src/main/kotlin/ru/shadowsparky/vbox/backend/data/FuzzySearchFilter.kt
index f057ee3..c1410c9 100644
--- a/apps/vbox/backend/src/main/kotlin/ru/shadowsparky/vbox/backend/data/FuzzySearchFilter.kt
+++ b/apps/vbox/backend/src/main/kotlin/ru/shadowsparky/vbox/backend/data/FuzzySearchFilter.kt
@@ -1,5 +1,6 @@
 package ru.shadowsparky.vbox.backend.data
 
+import com.github.terrakok.fuzzykot.Levenshtein
 import org.koin.core.annotation.Single
 import ru.shadowsparky.vbox.shared.domain.model.VideoItem
 
@@ -12,9 +13,9 @@ class FuzzyMovieSearchFilter {
         return original.map { movie ->
             val titleNormalized = movie.title.normalize()
             if (titleNormalized.contains(query)) {
-                return@map Pair(movie, 1.0)
+                return@map Pair(movie, 100)
             }
-            val score = titleNormalized.fuzzySimilarity(query)
+            val score = Levenshtein.tokenSortRatio(titleNormalized, query)
             Pair(movie, score)
         }.filter { it.second >= THRESHOLD }.sortedByDescending { it.second }.map { it.first }
     }
@@ -47,20 +48,7 @@ class FuzzyMovieSearchFilter {
         }
     }
 
-    private fun String.fuzzySimilarity(other: String): Double {
-        if (this == other) return 1.0
-        if (this.isBlank() || other.isBlank()) return 0.0
-        val s1Pairs = this.windowed(2)
-        val s2Pairs = other.windowed(2).toMutableList()
-        if (s1Pairs.isEmpty() || s2Pairs.isEmpty()) return 0.0
-        var matches = 0
-        for (pair in s1Pairs) {
-            if (s2Pairs.remove(pair)) { matches++ }
-        }
-        return (2.0 * matches) / (s1Pairs.size + other.windowed(2).size)
-    }
-
     private companion object {
-        const val THRESHOLD: Double = 0.45
+        const val THRESHOLD = 55
     }
 }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 81e31d7..eaf7118 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -8,6 +8,7 @@ compose-material-version = "1.11.0-alpha03"
 compose-version = "1.11.1"
 desugar_jdk_libs = "2.1.5"
 foundation = "1.11.1"
+fuzzykot = "1.0.0"
 haze = "1.7.2"
 java-jwt = "4.6.0"
 kotlin-version = "2.4.10"
@@ -66,6 +67,7 @@ androidx-sqlite = { module = "androidx.sqlite:sqlite", version.ref = "sqlite" }
 androidx-work-runtime-ktx = { module = "androidx.work:work-runtime-ktx", version.ref = "workRuntimeKtx" }
 coil-compose = { module = "io.coil-kt.coil3:coil-compose", version.ref = "coil-compose" }
 com-android-application-gradle-plugin = { module = "com.android.application:com.android.application.gradle.plugin", version.ref = "agp" }
+fuzzykot = { module = "com.github.terrakok:fuzzykot", version.ref = "fuzzykot" }
 haze = { module = "dev.chrisbanes.haze:haze", version.ref = "haze" }
 haze-materials = { module = "dev.chrisbanes.haze:haze-materials", version.ref = "haze" }
 java-jwt = { module = "com.auth0:java-jwt", version.ref = "java-jwt" }