Add random sort option

app/src/main/java/eu/kanade/presentation/library/LibrarySettingsDialog.kt

@@ -6,6 +6,8 @@ import androidx.compose.foundation.layout.ColumnScope
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Refresh
 import androidx.compose.material3.FilterChip
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
@@ -29,6 +31,7 @@ import tachiyomi.domain.library.service.LibraryPreferences
 import tachiyomi.i18n.MR
 import tachiyomi.presentation.core.components.CheckboxItem
 import tachiyomi.presentation.core.components.HeadingItem
+import tachiyomi.presentation.core.components.NondirectionalSortItem
 import tachiyomi.presentation.core.components.SettingsChipRow
 import tachiyomi.presentation.core.components.SliderItem
 import tachiyomi.presentation.core.components.SortItem
@@ -178,27 +181,42 @@ private fun ColumnScope.SortPage(
         MR.strings.action_sort_latest_chapter to LibrarySort.Type.LatestChapter,
         MR.strings.action_sort_chapter_fetch_date to LibrarySort.Type.ChapterFetchDate,
         MR.strings.action_sort_date_added to LibrarySort.Type.DateAdded,
+        MR.strings.action_sort_random to LibrarySort.Type.Random,
     ).plus(trackerSortOption).map { (titleRes, mode) ->
-        SortItem(
-            label = stringResource(titleRes),
-            sortDescending = sortDescending.takeIf { sortingMode == mode },
-            onClick = {
-                val isTogglingDirection = sortingMode == mode
-                val direction = when {
-                    isTogglingDirection -> if (sortDescending) {
-                        LibrarySort.Direction.Ascending
-                    } else {
-                        LibrarySort.Direction.Descending
-                    }
-                    else -> if (sortDescending) {
-                        LibrarySort.Direction.Descending
-                    } else {
-                        LibrarySort.Direction.Ascending
-                    }
-                }
-                screenModel.setSort(category, mode, direction)
-            },
-        )
+        when(mode) {
+            LibrarySort.Type.Random -> {
+                NondirectionalSortItem(
+                    label = stringResource(titleRes),
+                    enabled = sortingMode == LibrarySort.Type.Random,
+                    enabledIcon = Icons.Default.Refresh,
+                    onClick = {
+                        screenModel.setSort(category, mode, LibrarySort.Direction.Ascending)
+                    },
+                )
+            }
+            else -> {
+                SortItem(
+                    label = stringResource(titleRes),
+                    sortDescending = sortDescending.takeIf { sortingMode == mode },
+                    onClick = {
+                        val isTogglingDirection = sortingMode == mode
+                        val direction = when {
+                            isTogglingDirection -> if (sortDescending) {
+                                LibrarySort.Direction.Ascending
+                            } else {
+                                LibrarySort.Direction.Descending
+                            }
+                            else -> if (sortDescending) {
+                                LibrarySort.Direction.Descending
+                            } else {
+                                LibrarySort.Direction.Ascending
+                            }
+                        }
+                        screenModel.setSort(category, mode, direction)
+                    },
+                )
+            }
+        }
     }
 }
 

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreenModel.kt

@@ -267,7 +267,7 @@ class LibraryScreenModel(
 
         fun LibrarySort.comparator(): Comparator<LibraryItem> = Comparator { i1, i2 ->
             when (this.type) {
-                LibrarySort.Type.Alphabetical -> {
+                LibrarySort.Type.Alphabetical, LibrarySort.Type.Random -> {
                     sortAlphabetically(i1, i2)
                 }
                 LibrarySort.Type.LastRead -> {
@@ -304,11 +304,16 @@ class LibraryScreenModel(
         }
 
         return mapValues { (key, value) ->
-            val comparator = key.sort.comparator()
-                .let { if (key.sort.isAscending) it else it.reversed() }
-                .thenComparator(sortAlphabetically)
+            when (key.sort.type) {
+                LibrarySort.Type.Random -> value.shuffled()
+                else -> {
+                    val comparator = key.sort.comparator()
+                        .let { if (key.sort.isAscending) it else it.reversed() }
+                        .thenComparator(sortAlphabetically)
 
-            value.sortedWith(comparator)
+                    value.sortedWith(comparator)
+                }
+            }
         }
     }
 

domain/src/main/java/tachiyomi/domain/library/model/LibrarySortMode.kt

@@ -31,6 +31,7 @@ data class LibrarySort(
         data object ChapterFetchDate : Type(0b00011000)
         data object DateAdded : Type(0b00011100)
         data object TrackerMean : Type(0b000100000)
+        data object Random : Type(0b000100100)
 
         companion object {
             fun valueOf(flag: Long): Type {
@@ -77,6 +78,7 @@ data class LibrarySort(
                 Type.ChapterFetchDate,
                 Type.DateAdded,
                 Type.TrackerMean,
+                Type.Random
             )
         }
         val directions by lazy { setOf(Direction.Ascending, Direction.Descending) }
@@ -104,6 +106,7 @@ data class LibrarySort(
                     "CHAPTER_FETCH_DATE" -> Type.ChapterFetchDate
                     "DATE_ADDED" -> Type.DateAdded
                     "TRACKER_MEAN" -> Type.TrackerMean
+                    "RANDOM" -> Type.Random
                     else -> Type.Alphabetical
                 }
                 val ascending = if (values[1] == "ASCENDING") Direction.Ascending else Direction.Descending
@@ -125,6 +128,7 @@ data class LibrarySort(
             Type.ChapterFetchDate -> "CHAPTER_FETCH_DATE"
             Type.DateAdded -> "DATE_ADDED"
             Type.TrackerMean -> "TRACKER_MEAN"
+            Type.Random -> "RANDOM"
         }
         val direction = if (direction == Direction.Ascending) "ASCENDING" else "DESCENDING"
         return "$type,$direction"

i18n/src/commonMain/moko-resources/base/strings.xml

@@ -69,6 +69,7 @@
     <string name="action_sort_chapter_fetch_date">Chapter fetch date</string>
     <string name="action_sort_date_added">Date added</string>
     <string name="action_sort_tracker_score">Tracker score</string>
+    <string name="action_sort_random">Random</string>
     <string name="action_search">Search</string>
     <string name="action_search_hint">Search…</string>
     <string name="action_search_settings">Search settings</string>

presentation-core/src/main/java/tachiyomi/presentation/core/components/SettingsItems.kt

@@ -17,6 +17,7 @@ import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ArrowDownward
 import androidx.compose.material.icons.filled.ArrowUpward
+import androidx.compose.material.icons.filled.Refresh
 import androidx.compose.material.icons.rounded.CheckBox
 import androidx.compose.material.icons.rounded.CheckBoxOutlineBlank
 import androidx.compose.material.icons.rounded.DisabledByDefault
@@ -115,6 +116,30 @@ fun SortItem(label: String, sortDescending: Boolean?, onClick: () -> Unit) {
     )
 }
 
+@Composable
+fun NondirectionalSortItem(label: String, enabled: Boolean, enabledIcon: ImageVector, onClick: () -> Unit) {
+    val icon = when(enabled) {
+        true -> enabledIcon
+        false -> null
+    }
+
+    BaseSettingsItem(
+        label = label,
+        widget = {
+            if (icon != null) {
+                Icon(
+                    imageVector = icon,
+                    contentDescription = null,
+                    tint = MaterialTheme.colorScheme.primary,
+                )
+            } else {
+                Spacer(modifier = Modifier.size(24.dp))
+            }
+        },
+        onClick = onClick,
+    )
+}
+
 @Composable
 fun CheckboxItem(label: String, pref: Preference<Boolean>) {
     val checked by pref.collectAsState()