package domain

import (
	"errors"
	"time"
)

const (
	ProfileFieldOptionStatusActive   = "ACTIVE"
	ProfileFieldOptionStatusInactive = "INACTIVE"
)

var (
	ErrInvalidFieldKey    = errors.New("invalid field key")
	ErrInvalidOptionCode  = errors.New("invalid field option code")
	ErrFieldOptionNotFound = errors.New("field option not found")
)

// Deprecated aliases for internal references during transition.
var (
	ErrInvalidProfileFieldKey        = ErrInvalidFieldKey
	ErrInvalidProfileFieldOptionCode = ErrInvalidOptionCode
	ErrProfileFieldOptionNotFound    = ErrFieldOptionNotFound
)

const (
	ProfileFieldEducationLevel   = "education_level"
	ProfileFieldOccupation       = "occupation"
	ProfileFieldAgeGroup         = "age_group"
	ProfileFieldLearningGoal     = "learning_goal"
	ProfileFieldLanguageChallange = "language_challange"
	ProfileFieldLanguageGoal     = "language_goal"
	ProfileFieldFavouriteTopic   = "favourite_topic"
)

// User profile columns validated against field_options on PUT /user (when non-empty).
var UserProfileFieldsWithOptions = []string{
	ProfileFieldEducationLevel,
	ProfileFieldOccupation,
	ProfileFieldAgeGroup,
	ProfileFieldLearningGoal,
	ProfileFieldLanguageChallange,
	ProfileFieldLanguageGoal,
	ProfileFieldFavouriteTopic,
}

type ProfileFieldOption struct {
	ID           int64
	FieldKey     string
	Code         string
	Label        string
	DisplayOrder int32
	Status       string
	CreatedAt    time.Time
	UpdatedAt    *time.Time
}

type CreateProfileFieldOptionInput struct {
	FieldKey     string
	Code         string
	Label        string
	DisplayOrder *int32
	Status       *string
}

type UpdateProfileFieldOptionInput struct {
	Label        *string
	DisplayOrder *int32
	Status       *string
}

type ProfileFieldOptionsGrouped map[string][]ProfileFieldOptionItem

type ProfileFieldOptionItem struct {
	Code  string `json:"code"`
	Label string `json:"label"`
}