Admin Dashboard

@Controller
@RequestMapping("/admin")
public class AdminController {

    // User management page
    @GetMapping({ "/users" })
    public String mostrarGestionUsuarios() {
        return "admin/users";
    }

    // Statistics and metrics page
    @GetMapping({ "/stats" })
    public String mostrarEstadisticas() {
        return "admin/stats";
    }
}

@Entity
public class AppUser extends BaseEntity {
    private Long id;
    private String firstName;
    private String lastName;
    private String username;  // Email address
    private Boolean active;
    private LocalDateTime registeredAt;
    private LocalDateTime lastLoginAt;
    private UserRole role;
    // ...
}

@Entity
public class UserRole extends BaseEntity {
    public enum RoleName {
        ADMIN, USER, PROFESSIONAL, MODERATOR
    }
    
    private Long id;
    private RoleName name;
    private Boolean active;
    
    public int getUsersCount() {
        return users != null ? users.size() : 0;
    }
}

@Entity
public class Category extends BaseEntity {
    private Long id;
    private String name;
    private String description;
    private Boolean active;
    private List<ServiceRequest> requests;
    private Set<ProfessionalProfile> professionals;
}

@Entity
public class AccessLog {
    private Long id;
    private LocalDateTime accessedAt;
    private String sourceIp;
    private boolean success;
    private AppUser user;
}

/admin/
├── /users          - User management interface
├── /stats          - Statistics and metrics
├── /categories     - Category management
├── /edit/{id}      - Edit specific category
├── /delete/{id}    - Delete category
└── /toggle/{id}    - Toggle category status