category structure

Ledger/app/src/main/java/at/xaxa/ledger/ui/category/overview/CategoryOverview.kt

@@ -23,7 +23,7 @@ fun CategoryOverview(
     onButtonClick: () -> Unit,
     modifier: Modifier = Modifier,
     onCardClick: (Int) -> Unit,
-    categoryViewModel: CategoryViewModel = viewModel(factory = AppViewModelProvider.Factory)
+    categoryViewModel: OverviewCategoryViewModel = viewModel(factory = AppViewModelProvider.Factory)
 ){
 
     val categories by categoryViewModel.categoryUiState.categories.collectAsState(initial = emptyList())

Ledger/app/src/main/java/at/xaxa/ledger/ui/category/overview/OverviewCategoryViewModel.kt

@@ -0,0 +1,44 @@
+package at.xaxa.ledger.ui.category
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.SavedStateHandle
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import at.xaxa.ledger.data.EntryRepository
+import at.xaxa.ledger.data.db.Category.CategoryEntity
+import at.xaxa.ledger.ui.category.add.CategoryListUIState
+import at.xaxa.ledger.ui.category.add.CategoryUIState
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+data class CategoryUIState(val category: CategoryEntity = CategoryEntity(0,"",0))
+data class CategoryListUIState(val categories: Flow<List<CategoryEntity>> = flowOf(emptyList()))
+
+
+class OverviewCategoryViewModel(
+    private val savedStateHandle: SavedStateHandle,
+    private val repository: EntryRepository
+) : ViewModel() {
+    var categoryUiState by mutableStateOf(CategoryListUIState())
+    var categoryUi by mutableStateOf(CategoryUIState())
+        private set
+
+    init {
+        getAllCategories()
+    }
+
+    fun getAllCategories() {
+        viewModelScope.launch {
+            val categories = withContext(Dispatchers.IO) {
+                repository.getAllCategories()
+            }
+            categoryUiState = CategoryListUIState(categories)
+
+        }
+    }
+}