app/src/main/java/come/stormborntales/notevault/ui/screens/AddNoteDialog.kt

@@ -1,14 +1,14 @@
 package come.stormborntales.notevault.ui.screens
 
 import androidx.compose.foundation.layout.Column
-import androidx.compose.material3.AlertDialog
-import androidx.compose.material3.Text
-import androidx.compose.material3.TextButton
-import androidx.compose.material3.OutlinedTextField
+import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.runtime.*
 import androidx.compose.ui.Modifier
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.*
 import androidx.compose.ui.unit.dp
 
 @Composable
@@ -18,56 +18,28 @@ fun AddNoteDialog(
 ) {
     var title by remember { mutableStateOf("") }
     var composer by remember { mutableStateOf("") }
-    var year by remember { mutableStateOf("") }
+    var yearText by remember { mutableStateOf("") }
     var genre by remember { mutableStateOf("") }
     var description by remember { mutableStateOf("") }
+    var showTitleError by remember { mutableStateOf(false) }
 
     AlertDialog(
         onDismissRequest = onDismiss,
-        title = { Text("Notenblatt hinzufügen") },
-        text = {
-            Column {
-                OutlinedTextField(
-                    value = title,
-                    onValueChange = { title = it },
-                    label = { Text("Titel*") },
-                    singleLine = true
-                )
-                OutlinedTextField(
-                    value = composer,
-                    onValueChange = { composer = it },
-                    label = { Text("Komponist") },
-                    singleLine = true
-                )
-                OutlinedTextField(
-                    value = year,
-                    onValueChange = { year = it },
-                    label = { Text("Erscheinungsjahr") },
-                    singleLine = true
-                )
-                OutlinedTextField(
-                    value = genre,
-                    onValueChange = { genre = it },
-                    label = { Text("Genre") },
-                    singleLine = true
-                )
-                OutlinedTextField(
-                    value = description,
-                    onValueChange = { description = it },
-                    label = { Text("Beschreibung") },
-                    modifier = Modifier.height(100.dp)
-                )
-            }
-        },
         confirmButton = {
-            TextButton(
-                onClick = {
-                    if (title.isNotBlank()) {
-                        val parsedYear = year.toIntOrNull()
-                        onSave(title, composer.ifBlank { null }, parsedYear, genre.ifBlank { null }, description.ifBlank { null })
-                    }
+            TextButton(onClick = {
+                if (title.isBlank()) {
+                    showTitleError = true
+                } else {
+                    val year = yearText.toIntOrNull()
+                    onSave(
+                        title.trim(),
+                        composer.takeIf { it.isNotBlank() },
+                        year,
+                        genre.takeIf { it.isNotBlank() },
+                        description.takeIf { it.isNotBlank() }
+                    )
                 }
-            ) {
+            }) {
                 Text("Speichern")
             }
         },
@@ -75,6 +47,74 @@ fun AddNoteDialog(
             TextButton(onClick = onDismiss) {
                 Text("Abbrechen")
             }
+        },
+        title = {
+            Text("Notenblatt hinzufügen", style = MaterialTheme.typography.titleLarge)
+        },
+        text = {
+            Column(modifier = Modifier.verticalScroll(rememberScrollState())) {
+                OutlinedTextField(
+                    value = title,
+                    onValueChange = {
+                        title = it
+                        if (it.isNotBlank()) showTitleError = false
+                    },
+                    label = { Text("Titel*") },
+                    isError = showTitleError,
+                    singleLine = true,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 4.dp)
+                )
+                if (showTitleError) {
+                    Text(
+                        "Titel darf nicht leer sein",
+                        color = MaterialTheme.colorScheme.error,
+                        style = MaterialTheme.typography.bodySmall,
+                        modifier = Modifier.padding(start = 16.dp, bottom = 4.dp)
+                    )
+                }
+
+                OutlinedTextField(
+                    value = composer,
+                    onValueChange = { composer = it },
+                    label = { Text("Komponist (optional)") },
+                    singleLine = true,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 4.dp)
+                )
+
+                OutlinedTextField(
+                    value = yearText,
+                    onValueChange = { yearText = it.filter { c -> c.isDigit() } },
+                    label = { Text("Erscheinungsjahr (optional)") },
+                    singleLine = true,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 4.dp)
+                )
+
+                OutlinedTextField(
+                    value = genre,
+                    onValueChange = { genre = it },
+                    label = { Text("Genre (optional)") },
+                    singleLine = true,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 4.dp)
+                )
+
+                OutlinedTextField(
+                    value = description,
+                    onValueChange = { description = it },
+                    label = { Text("Beschreibung (optional)") },
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 4.dp),
+                    maxLines = 4
+                )
+            }
         }
     )
 }