clean.go

// Domain

type ExerciseRequestSubmission struct {
	
	ExerciseRequestID int32,
	PaymentType string,
	Signature null.Val[domain.Signature],
}

// Use Case

import (
	"github.com/ProlificLabs/snowball/domain"
)

type SubmitExerciseUseCase struct {
	
	dateFactory DateFactoryInterface
  
	companyGateway CompanyGatewayInterface
	exerciseRequestGateway ExerciseRequestGatewayInterface
	signatureGateway SignatureGatewayInterface
  
	documentService DocumentServiceInterface
}

func (uc SubmitExerciseUseCase) execute(submission domain.ExerciseRequestSubmission) error {
  
	exerciseRequest, err := uc.exerciseRequestGateway.GetForSubmission(submission)
	if err != nil {
		return err
	}
  
	company, err := uc.companyGateway.GetForExerciseRequest(exerciseRequest)
	if err != nil {
		return err
	}
  
	err = company.ConfirmExerciseRequestsEnabled()
	if err != nil {
		return err
	}
  
	signature, err := exerciseRequest.SignWithSubmission(submission)
	if err != nil {
		return err
	}
  
	err = uc.signatureGateway.Save(signature)
	if err != nil {
		return err
	}

	submission.SetExerciseDate = uc.dateFactory.DateFromNow()
	err = exerciseRequest.SetAsPaidWithSubmission(submission)
	if err != nil {
		return err
	}

	err = uc.exerciseRequestGateway.Update(exerciseRequest)
	if err != nil {
		return err
	}

	err = uc.documentService.GenerateNoticeOfExercise(exerciseRequest)
	if err != nil {
		return err
	}

	return nil
}