package domain

import "time"

// DefaultCEFRCoursesByProgramName maps seeded program names to default course names
// (migrations 000048 and 000050). The API may still create courses with any name.
var DefaultCEFRCoursesByProgramName = map[string][]string{
	"Beginner":     {"A1", "A2"},
	"Intermediate": {"B1", "B2"},
	"Advanced":     {"C1", "C2"},
}

// DefaultCEFRCourseNames is every CEFR label used in DefaultCEFRCoursesByProgramName.
var DefaultCEFRCourseNames = []string{"A1", "A2", "B1", "B2", "C1", "C2"}

// Course belongs to a Program.
type Course struct {
	ID          int64      `json:"id"`
	ProgramID   int64      `json:"program_id"`
	Name        string     `json:"name"`
	Description *string    `json:"description,omitempty"`
	Thumbnail   *string    `json:"thumbnail,omitempty"`
	SortOrder   int        `json:"sort_order"`
	CreatedAt   time.Time  `json:"created_at"`
	UpdatedAt   *time.Time `json:"updated_at,omitempty"`
	// Populated on list-by-program. Practice count: lms_practices rows with course_id = course only
	// (not practices attached to a module or lesson under this course).
	ModuleCount   int              `json:"module_count"`
	LessonCount   int              `json:"lesson_count"`
	PracticeCount int              `json:"practice_count"`
	HasPractice   bool             `json:"has_practice"`
	Access        *LMSEntityAccess `json:"access,omitempty"`
}

type CreateCourseInput struct {
	Name        string  `json:"name" validate:"required"`
	Description *string `json:"description,omitempty"`
	Thumbnail   *string `json:"thumbnail,omitempty"`
	// SortOrder within the program when set; omit to append after current max within program_id (uniqueness is per-program).
	SortOrder *int `json:"sort_order,omitempty" validate:"omitempty,min=0"`
}

type UpdateCourseInput struct {
	Name        *string `json:"name,omitempty"`
	Description *string `json:"description,omitempty"`
	Thumbnail   *string `json:"thumbnail,omitempty"`
	SortOrder   *int    `json:"sort_order,omitempty"`
}