package models

import (
	"time"
)

// NotificationType represents the type of notification
type NotificationType string

const (
	NotificationTypeSystem NotificationType = "system"
	NotificationTypeAlert  NotificationType = "alert"
	NotificationTypeInfo   NotificationType = "info"
)

// Notification represents a system notification for a user
type Notification struct {
	BaseModel
	UserID  uint             `gorm:"not null;index" json:"user_id"`
	Title   string           `gorm:"size:200;not null" json:"title"`
	Content string           `gorm:"type:text;not null" json:"content"`
	Type    NotificationType `gorm:"size:20;not null;default:'system'" json:"type"`
	IsRead  bool             `gorm:"default:false" json:"is_read"`
	Link    string           `gorm:"size:255" json:"link,omitempty"` // Optional link to redirect
	ReadAt  *time.Time       `json:"read_at,omitempty"`

	// Relationships
	User User `gorm:"foreignKey:UserID" json:"-"`
}

// TableName specifies the table name for Notification
func (Notification) TableName() string {
	return "notifications"
}