fix: don't append volume to series title if equals to 1

closes #347

komga/src/main/kotlin/org/gotson/komga/infrastructure/metadata/comicinfo/ComicInfoProvider.kt

@@ -77,7 +77,7 @@ class ComicInfoProvider(
 
       val genres = comicInfo.genre?.split(',')?.mapNotNull { it.trim().ifBlank { null } }
       val series = comicInfo.series?.ifBlank { null }?.let { series ->
-        series + (comicInfo.volume?.let { " ($it)" } ?: "")
+        series + (comicInfo.volume?.let { if (it != 1) " ($it)" else "" } ?: "")
       }
 
       return SeriesMetadataPatch(

komga/src/test/kotlin/org/gotson/komga/infrastructure/metadata/comicinfo/ComicInfoProviderTest.kt

@@ -229,6 +229,22 @@ class ComicInfoProviderTest {
       }
     }
 
+    @Test
+    fun `given comicInfo with volume as 1 when getting series metadata then metadata title omits volume`() {
+      val comicInfo = ComicInfo().apply {
+        series = "series"
+        volume = 1
+      }
+
+      every { mockMapper.readValue(any<ByteArray>(), ComicInfo::class.java) } returns comicInfo
+
+      val patch = comicInfoProvider.getSeriesMetadataFromBook(book, media)!!
+
+      with(patch) {
+        assertThat(title).isEqualTo("series")
+      }
+    }
+
     @Test
     fun `given comicInfo with incorrect values when getting series metadata then metadata patch is valid`() {
       val comicInfo = ComicInfo().apply {