package domain

import "time"

// ExamPrepPractice is question-set content tied to an exam-prep lesson; uses shared question_sets / questions.
type ExamPrepPractice struct {
	ID               int64                 `json:"id"`
	LessonID         int64                 `json:"lesson_id"` // exam_prep.unit_module_lessons.id
	Title            string                `json:"title"`
	StoryDescription *string               `json:"story_description,omitempty"`
	StoryImage       *string               `json:"story_image,omitempty"`
	PersonaID        *int64                `json:"persona_id,omitempty"` // lms_personas.id when set
	QuestionSetID    int64                 `json:"question_set_id"`
	PublishStatus    PracticePublishStatus `json:"publish_status"`
	QuickTips        *string               `json:"quick_tips,omitempty"`
	CreatedAt        time.Time             `json:"created_at"`
	UpdatedAt        *time.Time            `json:"updated_at,omitempty"`
}

// VisibleToLearners mirrors LMS practice visibility rules for subscribers.
func (p ExamPrepPractice) VisibleToLearners() bool {
	return p.PublishStatus == PracticePublishPublished
}

// CreateExamPrepPracticeInput is the body for POST .../exam-prep/lessons/{lessonId}/practices (lesson from path).
type CreateExamPrepPracticeInput struct {
	Title            *string `json:"title,omitempty"`
	StoryDescription *string `json:"story_description,omitempty"`
	StoryImage       *string `json:"story_image,omitempty"`
	PersonaID        *int64  `json:"persona_id,omitempty"`
	QuestionSetID    int64   `json:"question_set_id" validate:"required,gt=0"`
	QuickTips        *string `json:"quick_tips,omitempty"`
	PublishStatus    string  `json:"publish_status,omitempty" validate:"omitempty,oneof=DRAFT draft PUBLISHED published"`
}

type UpdateExamPrepPracticeInput struct {
	Title            *string `json:"title,omitempty"`
	StoryDescription *string `json:"story_description,omitempty"`
	StoryImage       *string `json:"story_image,omitempty"`
	PersonaID        *int64  `json:"persona_id,omitempty"`
	QuestionSetID    *int64  `json:"question_set_id,omitempty"`
	QuickTips        *string `json:"quick_tips,omitempty"`
	PublishStatus    *string `json:"publish_status,omitempty" validate:"omitempty,oneof=DRAFT draft PUBLISHED published"`
}