[R9] Consultation service with add consultation method

src/main/java/com/mirna/hospitalmanagementapi/application/services/ConsultationServiceImpl.java

@@ -0,0 +1,97 @@
+package com.mirna.hospitalmanagementapi.application.services;
+
+import org.apache.coyote.BadRequestException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.mirna.hospitalmanagementapi.application.usecase.consultation.FindConsultationByDoctorAndDateUseCase;
+import com.mirna.hospitalmanagementapi.application.usecase.consultation.FindConsultationByPatientAndDateUseCase;
+import com.mirna.hospitalmanagementapi.application.usecase.consultation.SaveConsultationUseCase;
+import com.mirna.hospitalmanagementapi.application.usecase.doctor.FindDoctorByIdUseCase;
+import com.mirna.hospitalmanagementapi.application.usecase.doctor.FindOneFreeDoctorBySpecialtyUseCase;
+import com.mirna.hospitalmanagementapi.application.usecase.patient.FindPatientByIdUseCase;
+import com.mirna.hospitalmanagementapi.domain.dtos.consultation.ConsultationDTO;
+import com.mirna.hospitalmanagementapi.domain.entities.Consultation;
+import com.mirna.hospitalmanagementapi.domain.entities.Doctor;
+import com.mirna.hospitalmanagementapi.domain.entities.Patient;
+import com.mirna.hospitalmanagementapi.domain.exceptions.ConsultationValidationException;
+import com.mirna.hospitalmanagementapi.domain.services.ConsultationService;
+
+import jakarta.persistence.EntityNotFoundException;
+
+/**
+ * This class is an implementation of the ConsultationService interface.
+ *
+ * This class provides methods to perform operations on consultations
+ *
+ * @author Mirna Gama
+ * @version 1.0
+ */
+@Service
+public class ConsultationServiceImpl implements ConsultationService {
+
+	@Autowired
+	private SaveConsultationUseCase saveConsultation;
+
+	@Autowired
+	private FindConsultationByDoctorAndDateUseCase findConsultationByDoctorAndDate;
+
+	@Autowired
+	private FindConsultationByPatientAndDateUseCase findConsultationByPatientAndDate;
+
+	@Autowired
+	private FindPatientByIdUseCase findPatientById;
+
+	@Autowired
+	private FindDoctorByIdUseCase findDoctorById;
+
+	@Autowired
+	private FindOneFreeDoctorBySpecialtyUseCase findOneFreeDoctorBySpecialty;
+
+	/**
+	* Adds a new consultation to the repository.
+	* 
+	* @param consultationDTO A data transfer object representing a consultation to add.
+	* @return The saved consultation if successful,  or throws an exception if there is an error.
+	 * @throws ConsultationValidationException if there is a validation error
+	*/
+	@Override
+	public Consultation addConsultation(ConsultationDTO consultationDTO) throws ConsultationValidationException {
+
+		Patient patient = findPatientById.execute(consultationDTO.patientId());
+
+		if (!patient.getActive())
+			throw new ConsultationValidationException("This patient is not active");
+
+		if (findConsultationByPatientAndDate.execute(patient.getId(), consultationDTO.consultationDate()) != null)
+			throw new ConsultationValidationException("This patient is not free on this date");
+
+		Doctor doctor = null;
+
+		if (consultationDTO.doctorId() != null) {
+
+			doctor = findDoctorById.execute(consultationDTO.doctorId());
+
+			if (!doctor.getActive())
+				throw new ConsultationValidationException("This doctor is not active");
+
+			if (findConsultationByDoctorAndDate.execute(doctor.getId(), consultationDTO.consultationDate()) != null)
+				throw new ConsultationValidationException("This doctor is not free on this date");
+
+		} else if (consultationDTO.specialty() != null) {
+
+			doctor = findOneFreeDoctorBySpecialty.execute(consultationDTO.specialty(),
+					consultationDTO.consultationDate());
+
+			if (doctor == null) throw new EntityNotFoundException("There is no free doctor for this date with this specialty");
+			
+		} else {
+			throw new ConsultationValidationException("At least the specialty or doctor ID must be filled in");
+		}
+
+		Consultation consultation = new Consultation(patient, doctor, consultationDTO.consultationDate());
+
+		return saveConsultation.execute(consultation);
+	}
+
+}

src/main/java/com/mirna/hospitalmanagementapi/domain/services/ConsultationService.java

@@ -0,0 +1,18 @@
+package com.mirna.hospitalmanagementapi.domain.services;
+
+import com.mirna.hospitalmanagementapi.domain.dtos.consultation.ConsultationDTO;
+import com.mirna.hospitalmanagementapi.domain.entities.Consultation;
+import com.mirna.hospitalmanagementapi.domain.exceptions.ConsultationValidationException;
+
+public interface ConsultationService {
+
+	/**
+	* Adds a new consultation to the repository.
+	* 
+	* @param consultationDTO A data transfer object representing a consultation to add.
+	* @return The saved consultation if successful,  or throws an exception if there is an error.
+	 * @throws ConsultationValidationException if there is a validation error
+	*/
+	public Consultation addConsultation(ConsultationDTO consultationDTO) throws ConsultationValidationException;
+	
+}