definitions

type CoursesRepository interface {
	SaveCourse(dto *dtos.CreateCourseDTO) (*entities.Course, error)
	SaveInvitationCode(courseUUID string, invitationCode string) error
	GetInvitationCode(courseUUID string) (string, error)
	GetCourseByUUID(uuid string) (*entities.Course, error)
	GetCourseByInvitationCode(invitationCode string) (*entities.Course, error)
	GetRandomColor() (*entities.Color, error)
}

type InvitationCodeGenerator interface {
	Generate() (string, error)
}