package test

import (
	"RenewCMS/internal/domain/mail"
	"RenewCMS/internal/infrastructure/useCases"
	"errors"
	"testing"
)

type recordedMail struct {
	Address  string
	Template string
	Data     any
}

type mockMailRepo struct {
	SentEmails []recordedMail
	fail       failSwitch
}

func newMockMailRepo() *mockMailRepo {
	return &mockMailRepo{}
}

func (m *mockMailRepo) Send(receiverAddress string, templateName string, data any) error {
	if err := m.fail.trigger("Send"); err != nil {
		return err
	}
	m.SentEmails = append(m.SentEmails, recordedMail{receiverAddress, templateName, data})
	return nil
}

var _ mail.Repository = &mockMailRepo{}

func TestSendMail(t *testing.T) {
	repo := newMockMailRepo()
	uc := useCases.NewSendMailUseCase(repo)

	t.Run("Successful Email Send", func(t *testing.T) {
		err := uc.SendMail("user@example.com", "welcome", "User123")
		if err != nil {
			t.Fatalf("Expected no error, got %v", err)
		}
		if len(repo.SentEmails) != 1 {
			t.Errorf("Expected 1 email to be sent, got %d", len(repo.SentEmails))
		}
	})

	t.Run("Failed Email Send", func(t *testing.T) {
		repo.fail.failNext("Send")
		err := uc.SendMail("fail@example.com", "reset", nil)
		if !errors.Is(err, errRepositoryFailure) {
			t.Errorf("Expected repository failure, got %v", err)
		}
	})
}