package model

import (
	"database/sql/driver"
	"encoding/json"
	"fmt"
	"time"
)

// JSON 类型，用于 custom_fields
type JSON map[string]interface{}

func (j JSON) Value() (driver.Value, error) {
	if j == nil {
		return nil, nil
	}
	b, err := json.Marshal(j)
	return string(b), err
}

func (j *JSON) Scan(value interface{}) error {
	if value == nil {
		*j = nil
		return nil
	}
	var bytes []byte
	switch v := value.(type) {
	case string:
		bytes = []byte(v)
	case []byte:
		bytes = v
	default:
		return fmt.Errorf("cannot scan type %T into JSON", value)
	}
	return json.Unmarshal(bytes, j)
}

// Base 公共字段
type Base struct {
	ID        uint64     `gorm:"primaryKey;autoIncrement" json:"id"`
	CreatedAt time.Time  `json:"created_at"`
	UpdatedAt time.Time  `json:"updated_at"`
	DeletedAt *time.Time `gorm:"index" json:"-"`
}

// TenantBase 含租户隔离的公共字段
type TenantBase struct {
	Base
	HotelID uint64 `gorm:"not null;index" json:"hotel_id"`
}