package domain

import "time"

// AdminLMSUserLearningActivityTree is a nested LMS view for admins: programs → courses → modules,
// plus lessons/practices where the learner has recorded completion (see API description for schema limits).
type AdminLMSUserLearningActivityTree struct {
	UserID   int64                          `json:"user_id"`
	Programs []AdminLMSProgramLearningEntry `json:"programs"`
}

// AdminLMSProgramLearningEntry aggregates activity under one program (sequential LMS track).
type AdminLMSProgramLearningEntry struct {
	ID                     int64                         `json:"id"`
	Name                   string                        `json:"name"`
	SortOrder              int32                         `json:"sort_order"`
	RollupFullyCompletedAt *time.Time                    `json:"rollup_completed_at,omitempty"`
	Courses                []AdminLMSCourseLearningEntry `json:"courses"`
}

// AdminLMSCourseLearningEntry aggregates activity under one course inside a program.
type AdminLMSCourseLearningEntry struct {
	ID                     int64                           `json:"id"`
	Name                   string                          `json:"name"`
	SortOrder              int32                           `json:"sort_order"`
	RollupFullyCompletedAt *time.Time                      `json:"rollup_completed_at,omitempty"`
	Modules                []AdminLMSModuleLearningEntry   `json:"modules"`
	CourseLevelPractices   []AdminLMSPracticeLearningEntry `json:"course_level_practices,omitempty"`
}

// AdminLMSModuleLearningEntry aggregates activity under one module inside a course.
type AdminLMSModuleLearningEntry struct {
	ID                     int64                           `json:"id"`
	Name                   string                          `json:"name"`
	SortOrder              int32                           `json:"sort_order"`
	RollupFullyCompletedAt *time.Time                      `json:"rollup_completed_at,omitempty"`
	Lessons                []AdminLMSLessonLearningEntry   `json:"lessons,omitempty"`
	ModuleScopedPractices  []AdminLMSPracticeLearningEntry `json:"module_practices,omitempty"`
}

// AdminLMSLessonLearningEntry is lesson-scoped LMS activity (lesson marked complete and/or lesson practices completed).
type AdminLMSLessonLearningEntry struct {
	ID                    int64                           `json:"id"`
	Title                 string                          `json:"title"`
	SortOrder             int32                           `json:"sort_order"`
	CompletedAt           *time.Time                      `json:"completed_at,omitempty"`
	LessonScopedPractices []AdminLMSPracticeLearningEntry `json:"lesson_practices,omitempty"`
}

// AdminLMSPracticeLearningEntry is an LMS practice completion (lesson-, module-, or course-scoped).
type AdminLMSPracticeLearningEntry struct {
	LMSPracticeID int64     `json:"lms_practice_id"`
	Title         string    `json:"title"`
	Scope         string    `json:"scope"`
	CompletedAt   time.Time `json:"completed_at"`
}