Add bulk vehicle repair functionality in Falukant module

- Implemented a new repairAllVehicles method in FalukantService to handle the repair of multiple vehicles at once, including cost calculation and precondition checks.
- Updated FalukantController to expose the repairAllVehicles endpoint, allowing users to initiate bulk repairs via the API.
- Enhanced FalukantRouter to include a new route for bulk vehicle repairs.
- Modified BranchView component to add UI elements for repairing all vehicles, including a dialog for confirmation and displaying repair details.
- Updated German localization files to include translations related to bulk vehicle repair actions, improving user experience for German-speaking users.

backend/services/falukantService.js

@@ -1212,6 +1212,108 @@ class FalukantService extends BaseService {
         };
     }
 
+    async repairAllVehicles(hashedUserId, vehicleIds) {
+        const user = await getFalukantUserOrFail(hashedUserId);
+        const now = new Date();
+
+        if (!vehicleIds || !Array.isArray(vehicleIds) || vehicleIds.length === 0) {
+            throw new Error('Keine Fahrzeuge zum Reparieren angegeben');
+        }
+
+        // Alle Fahrzeuge laden
+        const vehicles = await Vehicle.findAll({
+            where: {
+                id: { [Op.in]: vehicleIds },
+                falukantUserId: user.id,
+            },
+            include: [
+                {
+                    model: VehicleType,
+                    as: 'type',
+                    required: true,
+                },
+                {
+                    model: Transport,
+                    as: 'transports',
+                    required: false,
+                    attributes: ['id'],
+                },
+            ],
+        });
+
+        if (vehicles.length !== vehicleIds.length) {
+            throw new Error('Nicht alle angegebenen Fahrzeuge gefunden oder gehören nicht dem Benutzer');
+        }
+
+        // Prüfe alle Fahrzeuge
+        const repairableVehicles = [];
+        let totalCost = 0;
+
+        for (const vehicle of vehicles) {
+            // Prüfen, ob Fahrzeug in Benutzung ist
+            const hasActiveTransport = Array.isArray(vehicle.transports) && vehicle.transports.length > 0;
+            const isBuilding = vehicle.availableFrom && new Date(vehicle.availableFrom).getTime() > now.getTime();
+
+            if (hasActiveTransport || isBuilding) {
+                continue; // Überspringe Fahrzeuge in Benutzung
+            }
+
+            // Prüfen, ob Reparatur nötig ist (Zustand < 100)
+            if (vehicle.condition >= 100) {
+                continue; // Überspringe bereits perfekte Fahrzeuge
+            }
+
+            // Kosten berechnen: Baupreis * 0.8 * (100 - zustand) / 100
+            const baseCost = vehicle.type.cost;
+            const repairCost = Math.round(baseCost * 0.8 * (100 - vehicle.condition) / 100);
+            totalCost += repairCost;
+            repairableVehicles.push({ vehicle, repairCost });
+        }
+
+        if (repairableVehicles.length === 0) {
+            throw new PreconditionError('noVehiclesToRepair');
+        }
+
+        // 10% Rabatt für Reparatur aller Fahrzeuge
+        const discountedCost = Math.round(totalCost * 0.9);
+
+        if (user.money < discountedCost) {
+            throw new PreconditionError('insufficientFunds');
+        }
+
+        // Alle Reparaturen in einer Transaktion durchführen
+        await sequelize.transaction(async (tx) => {
+            // Geld abziehen
+            const moneyResult = await updateFalukantUserMoney(
+                user.id,
+                -discountedCost,
+                'repair_all_vehicles',
+                user.id
+            );
+            if (!moneyResult.success) {
+                throw new Error('Failed to update money');
+            }
+
+            // Alle Fahrzeuge reparieren
+            for (const { vehicle, repairCost } of repairableVehicles) {
+                const buildTimeMinutes = vehicle.type.buildTimeMinutes || 0;
+                const buildMs = buildTimeMinutes * 60 * 1000;
+                const availableFrom = new Date(now.getTime() + buildMs);
+
+                await vehicle.update({
+                    condition: 100,
+                    availableFrom: availableFrom,
+                }, { transaction: tx });
+            }
+        });
+
+        return {
+            success: true,
+            repairedCount: repairableVehicles.length,
+            totalCost: discountedCost,
+        };
+    }
+
     async createStock(hashedUserId, branchId, stockData) {
         const u = await getFalukantUserOrFail(hashedUserId);
         const b = await getBranchOrFail(u.id, branchId);