@Component
public class EmployeeHandler {
  private final EmployeeRepository repository;

  public EmployeeHandler(EmployeeRepository repository) {
    this.repository = repository;
  }

  public Mono<ServerResponse> getAllEmployees(ServerRequest request) {
    Flux<Employee> employees = repository.getAllEmployees();
    return ServerResponse.ok()
        .contentType(MediaType.APPLICATION_JSON)
        .body(employees, Employee.class);
  }

  public Mono<ServerResponse> getEmployee(ServerRequest request) {
    String firstName = request.pathVariable("fn");
    String lastName = request.pathVariable("ln");
    Mono<Employee> employee = repository.getEmployee(firstName, lastName);

    return ServerResponse.ok()
        .contentType(MediaType.APPLICATION_JSON)
        .body(employee, Employee.class);
  }

  public Mono<ServerResponse> createNewEmployee(ServerRequest request) {
    Mono<Employee> employeeMono = request.bodyToMono(Employee.class);
    Mono<Employee> employee = repository.createNewEmployee(employeeMono);

    return ServerResponse.ok()
        .contentType(MediaType.APPLICATION_JSON)
        .body(employee, Employee.class);
  }

  public Mono<ServerResponse> deleteEmployee(ServerRequest request) {
    String id = request.pathVariable("id");
    Mono<Void> employee = repository.deleteEmployee(id);

    return ServerResponse.ok().contentType(MediaType.APPLICATION_JSON).build(employee);
  }

  public Mono<ServerResponse> getAllDepartments(ServerRequest request) {
    Flux<Department> allDepartments = repository.getAllDepartments();
    return ServerResponse.ok()
        .contentType(MediaType.APPLICATION_JSON)
        .body(allDepartments, Department.class);
  }
}