package models

import (
	"database/sql"
	"time"
)

// InvitationStatus 邀请状态枚举
type InvitationStatus string

const (
	StatusPending  InvitationStatus = "pending"
	StatusSent     InvitationStatus = "sent"
	StatusAccepted InvitationStatus = "accepted"
	StatusFailed   InvitationStatus = "failed"
	StatusExpired  InvitationStatus = "expired"
)

// Invitation 邀请记录表
type Invitation struct {
	ID           int              `json:"id"`
	CardKeyID    sql.NullInt64    `json:"card_key_id"`
	AccountID    int              `json:"account_id"`
	InvitedEmail string           `json:"invited_email"`
	Status       InvitationStatus `json:"status"`
	ErrorMessage sql.NullString   `json:"error_message"`
	ExpiresAt    sql.NullTime     `json:"expires_at"`
	CreatedAt    time.Time        `json:"created_at"`
	UpdatedAt    sql.NullTime     `json:"updated_at"`
}

// TableName 返回表名
func (Invitation) TableName() string {
	return "invitations"
}

// IsExpired 检查邀请是否过期
func (i *Invitation) IsExpired() bool {
	if !i.ExpiresAt.Valid {
		return false
	}
	return time.Now().After(i.ExpiresAt.Time)
}