package domain

import "time"

// ExamPrepModule is a module under an exam-prep unit (stored in exam_prep.unit_modules).
type ExamPrepModule struct {
	ID             int64                `json:"id"`
	UnitID         int64                `json:"unit_id"`
	Name           string               `json:"name"`
	Description    *string              `json:"description,omitempty"`
	Thumbnail      *string              `json:"thumbnail,omitempty"`
	Icon           *string              `json:"icon,omitempty"`
	SortOrder      int                  `json:"sort_order"`
	PublishStatus       ContentPublishStatus `json:"publish_status"`
	AccessTier          ContentAccessTier    `json:"access_tier"`
	EffectiveAccessTier ContentAccessTier    `json:"effective_access_tier,omitempty"`
	LessonsCount        *int64               `json:"lessons_count,omitempty"`
	PracticesCount *int64               `json:"practices_count,omitempty"`
	HasPractice    bool                 `json:"has_practice"`
	Access         *LMSEntityAccess     `json:"access,omitempty"`
	CreatedAt      time.Time            `json:"created_at"`
	UpdatedAt      *time.Time           `json:"updated_at,omitempty"`
}

// VisibleToLearners is true when the module appears in student/learner exam-prep APIs.
func (m ExamPrepModule) VisibleToLearners() bool {
	return m.PublishStatus == ContentPublishPublished
}

type CreateExamPrepModuleInput struct {
	Name        string  `json:"name" validate:"required"`
	Description *string `json:"description,omitempty"`
	Thumbnail   *string `json:"thumbnail,omitempty"`
	Icon        *string `json:"icon,omitempty"`
	// Omit or empty defaults to DRAFT; set PUBLISHED to make visible to learners immediately.
	PublishStatus *string `json:"publish_status,omitempty" validate:"omitempty,oneof=DRAFT draft PUBLISHED published"`
	AccessTier    *string `json:"access_tier,omitempty" validate:"omitempty,oneof=FREE free PREMIUM premium"`
}

type UpdateExamPrepModuleInput struct {
	Name          *string `json:"name,omitempty"`
	Description   *string `json:"description,omitempty"`
	Thumbnail     *string `json:"thumbnail,omitempty"`
	Icon          *string `json:"icon,omitempty"`
	SortOrder     *int    `json:"sort_order,omitempty"`
	PublishStatus *string `json:"publish_status,omitempty" validate:"omitempty,oneof=DRAFT draft PUBLISHED published"`
	AccessTier    *string `json:"access_tier,omitempty" validate:"omitempty,oneof=FREE free PREMIUM premium"`
}