WIP: Persist NoteEntities

.idea/deploymentTargetSelector.xml

@@ -4,7 +4,7 @@
     <selectionStates>
       <SelectionState runConfigName="app">
         <option name="selectionMode" value="DROPDOWN" />
-        <DropdownSelection timestamp="2025-04-29T15:21:34.999046322Z">
+        <DropdownSelection timestamp="2025-04-29T16:02:42.921287190Z">
           <Target type="DEFAULT_BOOT">
             <handle>
               <DeviceId pluginId="PhysicalDevice" identifier="serial=R52N50NLGRT" />

app/build.gradle.kts

@@ -2,6 +2,7 @@ plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.kotlin.android)
     alias(libs.plugins.kotlin.compose)
+    alias(libs.plugins.ksp) // NEU
 }
 
 android {
@@ -56,4 +57,9 @@ dependencies {
     debugImplementation(libs.androidx.ui.tooling)
     debugImplementation(libs.androidx.ui.test.manifest)
     implementation(libs.androidx.foundation)
+    implementation(libs.androidx.room.runtime)
+    implementation(libs.androidx.room.ktx)
+    implementation(libs.lifecycle.livedata.ktx)
+
+    ksp(libs.androidx.room.compiler)
 }

app/src/main/java/come/stormborntales/notevault/MainActivity.kt

@@ -10,10 +10,15 @@ import androidx.activity.result.PickVisualMediaRequest
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.runtime.*
 import androidx.compose.ui.platform.LocalContext
+import androidx.lifecycle.viewmodel.compose.viewModel
+import come.stormborntales.notevault.data.local.AppDatabase
 import come.stormborntales.notevault.data.model.NoteEntry
+import come.stormborntales.notevault.data.repository.NoteRepository
 import come.stormborntales.notevault.ui.screens.AddNoteDialog
 import come.stormborntales.notevault.ui.screens.MainScreen
 import come.stormborntales.notevault.ui.theme.NoteVaultTheme
+import come.stormborntales.notevault.ui.viewmodel.NoteViewModel
+import come.stormborntales.notevault.ui.viewmodel.NoteViewModelFactory
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import java.io.File
@@ -22,9 +27,14 @@ import java.io.InputStream
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        val applicationContext = applicationContext
+        val database = AppDatabase.getDatabase(applicationContext)
+        val repository = NoteRepository(database.noteDao())
+        val viewModelFactory = NoteViewModelFactory(repository)
 
         setContent {
             NoteVaultTheme {
+                val viewModel: NoteViewModel = viewModel(factory = viewModelFactory)
                 val context = LocalContext.current
 
                 // Globale Notenliste
@@ -62,43 +72,16 @@ class MainActivity : ComponentActivity() {
                     AddNoteDialog(
                         onDismiss = { showDialog = false },
                         onSave = { title, composer, year, genre, description ->
-                            scope.launch(Dispatchers.IO) {
+                            viewModel.addNote(
-                                val copiedUris = selectedUris.mapNotNull { uri ->
+                                context = context,
-                                    try {
+                                title = title,
-                                        val inputStream: InputStream? = context.contentResolver.openInputStream(uri)
+                                composer = composer,
-                                        val extension = MimeTypeMap.getSingleton()
+                                year = year,
-                                            .getExtensionFromMimeType(context.contentResolver.getType(uri)) ?: "jpg" // Fallback
+                                genre = genre,
-
+                                description = description,
-                                        val outputFile = File(context.filesDir, "note_${System.currentTimeMillis()}.$extension")
+                                selectedUris = selectedUris,
-                                        inputStream?.use { input ->
+                                onDone = { showDialog = false }
-                                            outputFile.outputStream().use { output ->
+                            )
-                                                input.copyTo(output)
-                                            }
-                                        }
-                                        Uri.fromFile(outputFile)
-                                    } catch (e: Exception) {
-                                        e.printStackTrace()
-                                        null
-                                    }
-                                }
-
-                                if (copiedUris.isNotEmpty()) {
-                                    notes.add(
-                                        NoteEntry(
-                                            title = title,
-                                            images = copiedUris,
-                                            composer = composer,
-                                            year = year,
-                                            genre = genre,
-                                            description = description
-                                        )
-                                    )
-                                }
-
-                                showDialog = false
-                            }
-
-
                         }
                     )
                 }

app/src/main/java/come/stormborntales/notevault/data/local/AppDatabase.kt

@@ -0,0 +1,32 @@
+package come.stormborntales.notevault.data.local
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.room.TypeConverters
+import come.stormborntales.notevault.data.local.dao.NoteDao
+import come.stormborntales.notevault.data.local.entity.NoteEntity
+
+@Database(entities = [NoteEntity::class], version = 1)
+@TypeConverters(UriListConverter::class)
+abstract class AppDatabase : RoomDatabase() {
+    abstract fun noteDao(): NoteDao
+
+    companion object {
+        @Volatile
+        private var INSTANCE: AppDatabase? = null
+
+        fun getDatabase(context: Context): AppDatabase {
+            return INSTANCE ?: synchronized(this) {
+                val instance = Room.databaseBuilder(
+                    context.applicationContext,
+                    AppDatabase::class.java,
+                    "note_database"
+                ).build()
+                INSTANCE = instance
+                instance
+            }
+        }
+    }
+}

app/src/main/java/come/stormborntales/notevault/data/local/UriListConverter.kt

@@ -0,0 +1,11 @@
+package come.stormborntales.notevault.data.local
+
+import androidx.room.TypeConverter
+
+class UriListConverter {
+    @TypeConverter
+    fun fromList(list: List<String>): String = list.joinToString(",")
+
+    @TypeConverter
+    fun toList(data: String): List<String> = if (data.isBlank()) emptyList() else data.split(",")
+}

app/src/main/java/come/stormborntales/notevault/data/local/dao/NoteDao.kt

@@ -0,0 +1,21 @@
+package come.stormborntales.notevault.data.local.dao
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import come.stormborntales.notevault.data.local.entity.NoteEntity
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface NoteDao {
+    @Query("SELECT * FROM notes")
+    fun getAll(): Flow<List<NoteEntity>>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insert(note: NoteEntity)
+
+    @Delete
+    suspend fun delete(note: NoteEntity)
+}

app/src/main/java/come/stormborntales/notevault/data/local/entity/NoteEntity.kt

@@ -0,0 +1,15 @@
+package come.stormborntales.notevault.data.local.entity
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "notes")
+data class NoteEntity(
+    @PrimaryKey(autoGenerate = true) val id: Int = 0,
+    val title: String,
+    val images: List<String>, // oder String + TypeConverter
+    val composer: String?,
+    val year: Int?,
+    val genre: String?,
+    val description: String?
+)

app/src/main/java/come/stormborntales/notevault/data/repository/NoteRepository.kt

@@ -0,0 +1,12 @@
+package come.stormborntales.notevault.data.repository
+
+import come.stormborntales.notevault.data.local.dao.NoteDao
+import come.stormborntales.notevault.data.local.entity.NoteEntity
+import kotlinx.coroutines.flow.Flow
+
+class NoteRepository(private val dao: NoteDao) {
+    val allNotes: Flow<List<NoteEntity>> = dao.getAll()
+
+    suspend fun insert(note: NoteEntity) = dao.insert(note)
+    suspend fun delete(note: NoteEntity) = dao.delete(note)
+}

app/src/main/java/come/stormborntales/notevault/ui/viewmodel/NoteViewModel.kt

@@ -0,0 +1,62 @@
+package come.stormborntales.notevault.ui.viewmodel
+
+import android.content.Context
+import android.net.Uri
+import android.webkit.MimeTypeMap
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.asLiveData
+import androidx.lifecycle.viewModelScope
+import come.stormborntales.notevault.data.local.entity.NoteEntity
+import come.stormborntales.notevault.data.repository.NoteRepository
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import java.io.File
+
+class NoteViewModel(
+    private val repository: NoteRepository,
+) : ViewModel() {
+    val notes = repository.allNotes.asLiveData()
+
+    fun addNote(context: Context, title: String, composer: String?, year: Int?, genre: String?, description: String?, selectedUris: List<Uri>, onDone:() -> Unit) {
+        viewModelScope.launch(Dispatchers.IO) {
+            val copiedUris = selectedUris.mapNotNull { uri ->
+                try {
+                    val inputStream = context.contentResolver.openInputStream(uri)
+                    val extension = MimeTypeMap.getSingleton()
+                        .getExtensionFromMimeType(context.contentResolver.getType(uri)) ?: "jpg"
+
+                    val outputFile = File(context.filesDir, "note_${System.currentTimeMillis()}.$extension")
+                    inputStream?.use { input ->
+                        outputFile.outputStream().use { output ->
+                            input.copyTo(output)
+                        }
+                    }
+                    Uri.fromFile(outputFile).toString() // speichern als String
+                } catch (e: Exception) {
+                    e.printStackTrace()
+                    null
+                }
+            }
+
+            if (copiedUris.isNotEmpty()) {
+                val note = NoteEntity(
+                    title = title,
+                    images = copiedUris, // muss als List<String> gespeichert sein
+                    composer = composer,
+                    year = year,
+                    genre = genre,
+                    description = description
+                )
+                repository.insert(note)
+            }
+
+            onDone()
+        }
+    }
+
+    fun deleteNote(note: NoteEntity) {
+        viewModelScope.launch {
+            repository.delete(note)
+        }
+    }
+}

app/src/main/java/come/stormborntales/notevault/ui/viewmodel/NoteViewModelFactory.kt

@@ -0,0 +1,17 @@
+package come.stormborntales.notevault.ui.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import come.stormborntales.notevault.data.repository.NoteRepository
+
+class NoteViewModelFactory(
+    private val repository: NoteRepository
+) : ViewModelProvider.Factory {
+    override fun <T : ViewModel> create(modelClass: Class<T>): T {
+        if (modelClass.isAssignableFrom(NoteViewModel::class.java)) {
+            @Suppress("UNCHECKED_CAST")
+            return NoteViewModel(repository) as T
+        }
+        throw IllegalArgumentException("Unknown ViewModel class")
+    }
+}

gradle/libs.versions.toml

@@ -10,13 +10,17 @@ lifecycleRuntimeKtx = "2.8.7"
 activityCompose = "1.8.0"
 composeBom = "2024.04.01"
 navigationCompose = "2.8.9"
+room = "2.7.1"
+ksp="2.1.21-RC-2.0.0"
 
 [libraries]
+lifecycle-livedata-ktx = "androidx.lifecycle:lifecycle-livedata-ktx:2.8.7"
 androidx-compose-bom-v20240100 = { module = "androidx.compose:compose-bom", version.ref = "composeBomVersion" }
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
 androidx-foundation = { module = "androidx.compose.foundation:foundation" }
 androidx-lifecycle-viewmodel-compose = { module = "androidx.lifecycle:lifecycle-viewmodel-compose", version.ref = "lifecycleRuntimeKtx" }
 androidx-navigation-compose = { module = "androidx.navigation:navigation-compose", version.ref = "navigationCompose" }
+androidx-room-runtime = { module = "androidx.room:room-runtime", version.ref = "room" }
 junit = { group = "junit", name = "junit", version.ref = "junit" }
 androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
 androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
@@ -30,9 +34,12 @@ androidx-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-toolin
 androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
 androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
 androidx-material3 = { group = "androidx.compose.material3", name = "material3" }
+androidx-room-ktx = { module = "androidx.room:room-ktx", version.ref = "room" }
+androidx-room-compiler = { module = "androidx.room:room-compiler", version.ref = "room" }
+
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
 kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
-
+ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }