Change the create event button to an edit if event that day.

app/build.gradle.kts

@@ -26,7 +26,7 @@ android {
     defaultConfig {
         namespace = "com.pixelized.headache"
         minSdk = 26
-        targetSdk = 35
+        targetSdk = 36
         versionCode = 1
         versionName = "1.0"
 

app/src/main/java/com/pixelized/headache/ui/page/home/HomePage.kt

@@ -16,6 +16,8 @@ import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Add
+import androidx.compose.material.icons.filled.CalendarToday
+import androidx.compose.material.icons.filled.Edit
 import androidx.compose.material.icons.filled.Info
 import androidx.compose.material.icons.outlined.Info
 import androidx.compose.material3.DropdownMenu
@@ -40,6 +42,7 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.pixelized.headache.R
 import com.pixelized.headache.ui.common.toolbar.Toolbar
 import com.pixelized.headache.ui.navigation.destination.MonthSummaryDestination
@@ -66,7 +69,9 @@ data class BottomBarItemUio(
 fun HomePage(
     navigator: HomeNavigator,
     editViewModel: EventEditBottomSheetViewModel = hiltViewModel(),
+    homeViewModel: HomeViewModel = hiltViewModel(),
 ) {
+    val todayEventId = homeViewModel.todayEventId.collectAsStateWithLifecycle()
     val bottomBarItems = rememberBottomBarItems(
         onYearlyFollowUp = {
             navigator.navigateToYearSummary()
@@ -103,6 +108,7 @@ fun HomePage(
     HomePageContent(
         modifier = Modifier.fillMaxSize(),
         navigator = navigator,
+        todayEventId = todayEventId,
         displayLegendAction = displayLegendAction,
         displayLegendPopup = displayLegendPopup,
         items = bottomBarItems,
@@ -114,7 +120,7 @@ fun HomePage(
             displayLegendPopup.value = false
         },
         onFabClick = {
-            editViewModel.show()
+            editViewModel.show(eventId = it)
         },
     )
 
@@ -156,11 +162,12 @@ private fun HomePageContent(
     navigator: HomeNavigator,
     displayLegendAction: State<Boolean>,
     displayLegendPopup: State<Boolean>,
+    todayEventId: State<Long?>,
     items: List<BottomBarItemUio>,
     selectedItem: State<Int>,
     onDisplayLegend: () -> Unit,
     onDismissLegend: () -> Unit,
-    onFabClick: () -> Unit,
+    onFabClick: (Long?) -> Unit,
 ) {
     Scaffold(
         modifier = modifier,
@@ -230,15 +237,23 @@ private fun HomePageContent(
             }
         },
         floatingActionButton = {
-            FloatingActionButton(
-                containerColor = MaterialTheme.colorScheme.primary,
-                shape = CircleShape,
-                onClick = onFabClick,
+            AnimatedContent(
+                targetState = todayEventId.value,
+                transitionSpec = { fadeIn() togetherWith fadeOut() },
             ) {
-                Icon(
-                    imageVector = Icons.Default.Add,
-                    contentDescription = null,
-                )
+                FloatingActionButton(
+                    containerColor = MaterialTheme.colorScheme.primary,
+                    shape = CircleShape,
+                    onClick = { onFabClick(todayEventId.value) },
+                ) {
+                    Icon(
+                        imageVector = when (it) {
+                            null -> Icons.Default.Add
+                            else -> Icons.Default.Edit
+                        },
+                        contentDescription = null,
+                    )
+                }
             }
         },
         content = { paddingValues ->

app/src/main/java/com/pixelized/headache/ui/page/home/HomeViewModel.kt

@@ -0,0 +1,32 @@
+package com.pixelized.headache.ui.page.home
+
+import android.icu.util.Calendar
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.pixelized.headache.repository.event.EventRepository
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
+import javax.inject.Inject
+
+@HiltViewModel
+class HomeViewModel @Inject constructor(
+    eventRepository: EventRepository,
+) : ViewModel() {
+    val todayEventId: StateFlow<Long?> = eventRepository.eventsMapFlow()
+        .map {
+            val calendar = Calendar.getInstance()
+            val year = calendar.get(Calendar.YEAR)
+            val month = calendar.get(Calendar.MONTH)
+            val day = calendar.get(Calendar.DAY_OF_MONTH)
+            val event = it[year]?.get(month)?.get(day)
+            event?.firstOrNull()?.id
+        }
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.Lazily,
+            initialValue = null
+        )
+}

gradle/libs.versions.toml

@@ -13,7 +13,7 @@
 # limitations under the License.
 
 [versions]
-agp = "8.12.2"
+agp = "8.13.0"
 kotlin = "2.2.0"
 kotlinSerialization = "2.2.0"
 coreKtx = "1.16.0"