package models

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

// JSONB is a custom type for JSONB columns.
type JSONB map[string]interface{}

// Value marshals JSONB for storing in the DB.
func (j JSONB) Value() (driver.Value, error) {
	if j == nil {
		return "{}", nil
	}
	return json.Marshal(j)
}

// Scan unmarshals a JSONB value.
func (j *JSONB) Scan(value interface{}) error {
	if value == nil {
		*j = JSONB{}
		return nil
	}
	switch v := value.(type) {
	case []byte:
		if len(v) == 0 {
			*j = JSONB{}
			return nil
		}
		return json.Unmarshal(v, j)
	case string:
		if v == "" {
			*j = JSONB{}
			return nil
		}
		return json.Unmarshal([]byte(v), j)
	default:
		return fmt.Errorf("failed to unmarshal JSONB value of type %T: %v", value, value)
	}
}

// BaseModel contains common fields for all models
type BaseModel struct {
	ID        uint `gorm:"primaryKey"`
	CreatedAt time.Time
	UpdatedAt time.Time
}

// TranslatableModel extends BaseModel with language support
type TranslatableModel struct {
	BaseModel
	Language string `gorm:"size:50;default:'multi'"`
	Slug     string `gorm:"size:255;index"`
}

// Translation status enum
type TranslationStatus string

const (
	TranslationStatusDraft     TranslationStatus = "draft"
	TranslationStatusPublished TranslationStatus = "published"
	TranslationStatusReviewing TranslationStatus = "reviewing"
	TranslationStatusRejected  TranslationStatus = "rejected"
)

// UserRole enum
type UserRole string

const (
	UserRoleReader      UserRole = "reader"
	UserRoleContributor UserRole = "contributor"
	UserRoleReviewer    UserRole = "reviewer"
	UserRoleEditor      UserRole = "editor"
	UserRoleAdmin       UserRole = "admin"
)