backend working

frontend/src/models/scheduling.ts

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+// backend/src/models/scheduling.ts
+import { Employee } from './Employee.js';
+import { ShiftPlan } from './ShiftPlan.js';
+
+// Add the missing type definitions
+export interface Availability {
+  id: string;
+  employeeId: string;
+  planId: string;
+  dayOfWeek: number; // 1=Monday, 7=Sunday
+  timeSlotId: string;
+  preferenceLevel: 1 | 2 | 3; // 1:preferred, 2:available, 3:unavailable
+  notes?: string;
+}
+
+export interface Constraint {
+  type: string;
+  severity: 'hard' | 'soft';
+  parameters: {
+    maxShiftsPerDay?: number;
+    minEmployeesPerShift?: number;
+    maxEmployeesPerShift?: number;
+    enforceTraineeSupervision?: boolean;
+    contractHoursLimit?: boolean;
+    maxHoursPerWeek?: number;
+    [key: string]: any;
+  };
+  weight?: number; // For soft constraints
+}
+
+export interface ScheduleRequest {
+  shiftPlan: ShiftPlan;
+  employees: Employee[];
+  availabilities: Availability[];
+  constraints: Constraint[];
+}
+
+export interface ScheduleResult {
+  assignments: Assignment[];
+  violations: Violation[];
+  success: boolean;
+  resolutionReport: string[];
+  processingTime: number;
+}
+
+export interface Assignment {
+  shiftId: string;
+  employeeId: string;
+  assignedAt: Date;
+  score: number; // Qualität der Zuweisung (1-100)
+}
+
+export interface Violation {
+  type: string;
+  severity: 'critical' | 'warning';
+  message: string;
+  involvedEmployees?: string[];
+  shiftId?: string;
+  details?: any;
+}
+
+export interface SolverOptions {
+  maxTimeInSeconds: number;
+  numSearchWorkers: number;
+  logSearchProgress: boolean;
+}
+
+export interface Solution {
+  assignments: Assignment[];
+  violations: Violation[];
+  success: boolean;
+  metadata: {
+    solveTime: number;
+    constraintsAdded: number;
+    variablesCreated: number;
+    optimal: boolean;
+  };
+}
+
+// Additional helper types for the scheduling system
+export interface SchedulingConfig {
+  maxRepairAttempts: number;
+  targetEmployeesPerShift: number;
+  enforceNoTraineeAlone: boolean;
+  enforceExperiencedWithChef: boolean;
+  preferEmployeePreferences: boolean;
+}
+
+export interface AssignmentResult {
+  assignments: { [shiftId: string]: string[] }; // shiftId -> employeeIds
+  violations: string[];
+  resolutionReport: string[];
+  success: boolean;
+  statistics?: {
+    totalAssignments: number;
+    preferredAssignments: number;
+    availableAssignments: number;
+    coverageRate: number;
+    violationCount: number;
+  };
+}
+
+export interface EmployeeAvailabilitySummary {
+  employeeId: string;
+  employeeName: string;
+  preferredSlots: number;
+  availableSlots: number;
+  unavailableSlots: number;
+  totalSlots: number;
+}
+
+export interface ShiftRequirement {
+  shiftId: string;
+  timeSlotId: string;
+  dayOfWeek: number;
+  date?: string;
+  requiredEmployees: number;
+  minEmployees: number;
+  maxEmployees: number;
+  assignedEmployees: string[];
+  isPriority: boolean;
+}