Make Appearance saveable

app/src/main/kotlin/it/vfsfitvnm/vimusic/ui/styling/Appearance.kt

@@ -1,12 +1,57 @@
 package it.vfsfitvnm.vimusic.ui.styling
 
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.runtime.saveable.Saver
+import androidx.compose.runtime.saveable.SaverScope
 import androidx.compose.runtime.staticCompositionLocalOf
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.unit.dp
 
 data class Appearance(
     val colorPalette: ColorPalette,
-    val typography: Typography,
+    val typography: Typography = typographyOf(colorPalette.text),
     val thumbnailShape: Shape
-)
+) {
+    companion object : Saver<Appearance, List<Any>> {
+        override fun restore(value: List<Any>) = Appearance(
+            colorPalette = ColorPalette(
+                background0 = Color((value[0] as Long).toULong()),
+                background1 = Color((value[1] as Long).toULong()),
+                background2 = Color((value[2] as Long).toULong()),
+                accent = Color((value[3] as Long).toULong()),
+                onAccent = Color((value[4] as Long).toULong()),
+                red = Color((value[5] as Long).toULong()),
+                blue = Color((value[6] as Long).toULong()),
+                text = Color((value[7] as Long).toULong()),
+                textSecondary = Color((value[8] as Long).toULong()),
+                textDisabled = Color((value[9] as Long).toULong()),
+                isDark = value[10] as Boolean
+            ),
+            thumbnailShape = RoundedCornerShape((value[11] as Int).dp)
+        )
+
+        override fun SaverScope.save(value: Appearance) =
+            listOf(
+                value.colorPalette.background0.value.toLong(),
+                value.colorPalette.background1.value.toLong(),
+                value.colorPalette.background2.value.toLong(),
+                value.colorPalette.accent.value.toLong(),
+                value.colorPalette.onAccent.value.toLong(),
+                value.colorPalette.red.value.toLong(),
+                value.colorPalette.blue.value.toLong(),
+                value.colorPalette.text.value.toLong(),
+                value.colorPalette.textSecondary.value.toLong(),
+                value.colorPalette.textDisabled.value.toLong(),
+                value.colorPalette.isDark,
+                when (value.thumbnailShape) {
+                    RoundedCornerShape(2.dp) -> 2
+                    RoundedCornerShape(4.dp) -> 4
+                    RoundedCornerShape(8.dp) -> 8
+                    else -> 0
+                }
+            )
+    }
+}
 
 val LocalAppearance = staticCompositionLocalOf<Appearance> { TODO() }