add: register and login with DB query AND some struct type correction

internal/api/repository/patient.go

@@ -60,3 +60,22 @@ func (r *PatientRepository) GetPatientDetailsByUserID(userID string) (*models.Pa
 		AccessionNumbers:  accessionNumbers,
 	}, nil
 }
+
+// CreatePatient creates a new patient record
+func (r *PatientRepository) CreatePatient(patientRecord *models.PatientDetails, userID string) error {
+	// Parse DOB to time.Time
+	dob, err := time.Parse("2006-01-02", patientRecord.DateOfBirth)
+	if err != nil {
+		return fmt.Errorf("invalid date of birth format: %w", err)
+	}
+
+	query := `INSERT INTO patient (Patient_UsersID, PatientMedrec, PatientName, PatientDoB, PatientCreatedAt, PatientUpdatedAt) 
+		VALUES (?, ?, ?, ?, NOW(), NOW())`
+
+	_, err = database.DB.Exec(query, userID, patientRecord.PatientID, patientRecord.PatientName, dob)
+	if err != nil {
+		return fmt.Errorf("database error creating patient: %w", err)
+	}
+
+	return nil
+}