feat: enhance AppSidebar with improved button interactions and visual feedback

composeApp/src/commonMain/kotlin/dev/krtirtho/spotube/modules/shell/AppSidebar.kt

@@ -21,12 +21,20 @@ import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.core.animateDpAsState
 import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
+import androidx.compose.foundation.BorderStroke
 import androidx.compose.foundation.background
+import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.hoverable
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.interaction.collectIsHoveredAsState
+import androidx.compose.foundation.interaction.collectIsPressedAsState
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.RowScope
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -38,20 +46,30 @@ import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
+import androidx.compose.material3.ripple
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
-import androidx.compose.ui.unit.dp
+import androidx.compose.ui.draw.drawWithCache
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.graphicsLayer
 import androidx.compose.runtime.collectAsState
 import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.unit.dp
 import dev.krtirtho.spotube.core.navigation.NavigationState
 import dev.krtirtho.spotube.core.navigation.Navigator
 import dev.krtirtho.spotube.core.navigation.Routes
+import dev.krtirtho.spotube.core.ui.base.SecondaryButton
+import dev.krtirtho.spotube.core.ui.base.buttonShadow
+import dev.krtirtho.spotube.core.ui.base.outlinedGradient
+import dev.krtirtho.spotube.core.ui.base.rememberButtonColors
 import dev.krtirtho.spotube.modules.downloads.DownloadBadgeIndicator
 import dev.krtirtho.spotube.modules.library.LibraryState
 import dev.krtirtho.spotube.modules.library.LibraryTab
@@ -156,20 +174,7 @@ fun SidebarItem(
     onClick: () -> Unit,
     showDownloadBadge: Boolean = false,
 ) {
-    Row(
+    val itemContent: @Composable RowScope.() -> Unit = {
-        modifier = Modifier
-            .fillMaxWidth()
-            .padding(horizontal = 10.dp, vertical = 4.dp)
-            .clip(MaterialTheme.shapes.small)
-            .background(
-                if (selected) MaterialTheme.colorScheme.secondaryContainer
-                else MaterialTheme.colorScheme.surfaceContainer
-            )
-            .clickable { onClick() }
-            .padding(horizontal = 14.dp, vertical = 12.dp),
-        verticalAlignment = Alignment.CenterVertically,
-        horizontalArrangement = if (expanded) Arrangement.Start else Arrangement.Center
-    ) {
         Box(modifier = Modifier.size(24.dp)) {
             Icon(
                 imageVector = activeIcon,
@@ -178,7 +183,7 @@ fun SidebarItem(
                     MaterialTheme.colorScheme.onSecondaryContainer
                 } else {
                     MaterialTheme.colorScheme.onSurfaceVariant
-                }
+                },
             )
             if (showDownloadBadge) {
                 DownloadBadgeIndicator(
@@ -187,17 +192,89 @@ fun SidebarItem(
             }
         }
         AnimatedVisibility(visible = expanded, enter = fadeIn(), exit = fadeOut()) {
-            Row(verticalAlignment = Alignment.CenterVertically) {
-                Spacer(modifier = Modifier.width(12.dp))
             Text(
                 text = label,
+                maxLines = 1,
+                softWrap = false,
                 color = if (selected) {
                     MaterialTheme.colorScheme.onSecondaryContainer
                 } else {
                     MaterialTheme.colorScheme.onSurfaceVariant
+                },
+            )
         }
+        Spacer(modifier = Modifier.weight(if (expanded) 1f else 0f))
+    }
+
+    val buttonModifier = Modifier
+        .fillMaxWidth()
+        .padding(horizontal = 10.dp, vertical = 4.dp)
+    val contentPadding = PaddingValues(horizontal = 14.dp, vertical = 12.dp)
+
+    if (selected) {
+        SecondaryButton(
+            onClick = onClick,
+            modifier = buttonModifier,
+            contentPadding = contentPadding,
+            content = itemContent,
+        )
+    } else {
+        val colors = rememberButtonColors()
+        val interactionSource = remember { MutableInteractionSource() }
+        val isHovered by interactionSource.collectIsHoveredAsState()
+        val isPressed by interactionSource.collectIsPressedAsState()
+        val gradient = outlinedGradient(colors, isPressed)
+        val border = colors.border.copy(alpha = if (isPressed) 0.7f else 1f)
+        val lift = if (isHovered && !isPressed) (-1).dp else 0.dp
+        val shape = RoundedCornerShape(14.dp)
+
+        Box(
+            modifier = buttonModifier
+                .hoverable(interactionSource = interactionSource)
+                .graphicsLayer { translationY = lift.toPx() }
+                .clip(shape)
+                .then(
+                    if (isHovered || isPressed) {
+                        buttonShadow(
+                            shape,
+                            isPressed,
+                            primary = false,
+                            colors,
+                            hovered = isHovered
+                        ).background(gradient, shape)
+                            .border(BorderStroke(0.5.dp, border), shape)
+                            .drawWithCache {
+                                val highlightBrush = Brush.verticalGradient(
+                                    colors = listOf(colors.highlight, Color.Transparent),
+                                    startY = 0f,
+                                    endY = size.height * 0.5f,
+                                )
+                                onDrawWithContent {
+                                    drawContent()
+                                    drawRect(
+                                        brush = highlightBrush,
+                                        topLeft = androidx.compose.ui.geometry.Offset.Zero,
+                                        size = size,
                                     )
                                 }
                             }
+                    } else {
+                        Modifier
+                    }
+                )
+                .clickable(
+                    interactionSource = interactionSource,
+                    indication = ripple(),
+                    onClick = onClick,
+                )
+                .padding(contentPadding),
+            contentAlignment = Alignment.Center,
+        ) {
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+                horizontalArrangement = Arrangement.spacedBy(8.dp),
+                content = itemContent,
+            )
+        }
     }
 }