From cf625f339176bd5af9d5f361190fb6b9a8472a64 Mon Sep 17 00:00:00 2001
From: rene <mail@motocamp.de>
Date: Sat, 30 May 2026 12:31:59 +0200
Subject: [PATCH] Ausgaben-Kategorien dynamisch vom Backend
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

ExpenseCategory DTO + GET /api/expenses/categories beim Öffnen der Liste
sowie bei Refresh. Falls der Endpunkt noch nicht ausgerollt ist (oder
fehlschlägt), Fallback auf eine lokale Default-Liste mit den aktuellen
sechs Kategorien.

AddExpenseSheet bekommt die Kategorien als Parameter, statt eigene
Liste zu führen — Source of Truth ist jetzt das Backend.
---
 BanYaroGo/API/DTOs.swift           |  6 ++++
 BanYaroGo/Views/AusgabenView.swift | 56 ++++++++++++++++++++++--------
 2 files changed, 47 insertions(+), 15 deletions(-)

diff --git a/BanYaroGo/API/DTOs.swift b/BanYaroGo/API/DTOs.swift
index 5f2a8a4..753b477 100644
--- a/BanYaroGo/API/DTOs.swift
+++ b/BanYaroGo/API/DTOs.swift
@@ -109,6 +109,12 @@ struct ExpenseCreateBody: Encodable {
     let notiz: String?
 }
 
+struct ExpenseCategory: Decodable, Identifiable {
+    let id: String
+    let label: String
+    let color: String?
+}
+
 // MARK: - Gassi-Zeiten
 
 struct GassiZeit: Decodable, Identifiable {
diff --git a/BanYaroGo/Views/AusgabenView.swift b/BanYaroGo/Views/AusgabenView.swift
index 8569418..bbb4bd3 100644
--- a/BanYaroGo/Views/AusgabenView.swift
+++ b/BanYaroGo/Views/AusgabenView.swift
@@ -2,10 +2,22 @@ import SwiftUI
 
 struct AusgabenView: View {
     @State private var expenses: [Expense] = []
+    @State private var categories: [ExpenseCategory] = []
     @State private var isLoading = false
     @State private var errorMessage: String?
     @State private var showAdd = false
 
+    /// Lokale Fallback-Liste, falls der Backend-Endpunkt /api/expenses/categories
+    /// noch nicht ausgerollt ist. Sollte im Normalfall überschrieben werden.
+    private static let defaultCategories: [ExpenseCategory] = [
+        ExpenseCategory(id: "futter",       label: "Futter",       color: nil),
+        ExpenseCategory(id: "tierarzt",     label: "Tierarzt",     color: nil),
+        ExpenseCategory(id: "zubehoer",     label: "Zubehör",      color: nil),
+        ExpenseCategory(id: "versicherung", label: "Versicherung", color: nil),
+        ExpenseCategory(id: "sitter",       label: "Sitter",       color: nil),
+        ExpenseCategory(id: "sonstiges",    label: "Sonstiges",    color: nil)
+    ]
+
     private static let dateFormatter: DateFormatter = {
         let f = DateFormatter()
         f.locale = Locale(identifier: "de_DE")
@@ -30,10 +42,27 @@ struct AusgabenView: View {
                 }
             }
             .sheet(isPresented: $showAdd) {
-                AddExpenseSheet { Task { await load() } }
+                AddExpenseSheet(categories: categories.isEmpty ? Self.defaultCategories : categories) {
+                    Task { await load() }
+                }
             }
-            .task { await load() }
-            .refreshable { await load() }
+            .task {
+                await loadCategories()
+                await load()
+            }
+            .refreshable {
+                await loadCategories()
+                await load()
+            }
+    }
+
+    private func loadCategories() async {
+        if let fetched: [ExpenseCategory] = try? await APIClient.shared.get("/api/expenses/categories"),
+           !fetched.isEmpty {
+            categories = fetched
+        } else if categories.isEmpty {
+            categories = Self.defaultCategories
+        }
     }
 
     @ViewBuilder
@@ -139,9 +168,10 @@ private struct ExpenseRow: View {
 
 private struct AddExpenseSheet: View {
     @Environment(\.dismiss) private var dismiss
+    let categories: [ExpenseCategory]
     let onSaved: () -> Void
 
-    @State private var kategorie = "futter"
+    @State private var kategorie: String
     @State private var betrag = ""
     @State private var date = Date()
     @State private var notiz = ""
@@ -150,23 +180,19 @@ private struct AddExpenseSheet: View {
     @State private var isSaving = false
     @State private var errorMessage: String?
 
-    /// Backend-Whitelist: tierarzt, futter, zubehoer, versicherung, sitter, sonstiges
-    private let kategorien: [(key: String, label: String)] = [
-        ("futter",       "Futter"),
-        ("tierarzt",     "Tierarzt"),
-        ("zubehoer",     "Zubehör"),
-        ("versicherung", "Versicherung"),
-        ("sitter",       "Sitter"),
-        ("sonstiges",    "Sonstiges")
-    ]
+    init(categories: [ExpenseCategory], onSaved: @escaping () -> Void) {
+        self.categories = categories
+        self.onSaved = onSaved
+        _kategorie = State(initialValue: categories.first?.id ?? "sonstiges")
+    }
 
     var body: some View {
         NavigationStack {
             Form {
                 Section("Kategorie") {
                     Picker("Kategorie", selection: $kategorie) {
-                        ForEach(kategorien, id: \.key) { entry in
-                            Text(entry.label).tag(entry.key)
+                        ForEach(categories) { entry in
+                            Text(entry.label).tag(entry.id)
                         }
                     }
                 }