package models

import "time"

// BackendLinkRequest is a one-shot request an administrator starts to link
// their account to a frontend user (golem15_user_backend_link_requests).
// Only the SHA-256 of the code is stored; the plain code travels once, in
// the site URL the administrator opens.
type BackendLinkRequest struct {
	ID            uint       `gorm:"column:id;primaryKey"`
	CodeHash      string     `gorm:"column:code_hash" json:"-"`
	BackendUserID uint       `gorm:"column:backend_user_id"`
	ExpiresAt     time.Time  `gorm:"column:expires_at"`
	UsedAt        *time.Time `gorm:"column:used_at"`
	CreatedAt     time.Time  `gorm:"column:created_at"`
}

func (BackendLinkRequest) TableName() string { return "golem15_user_backend_link_requests" }

func (BackendLinkRequest) Fillable() []string {
	return []string{"code_hash", "backend_user_id", "expires_at", "used_at"}
}

func (BackendLinkRequest) Hidden() []string { return []string{"code_hash"} }

// IsUsableAt is false once the request was used or has expired.
func (r BackendLinkRequest) IsUsableAt(now time.Time) bool {
	return r.UsedAt == nil && r.ExpiresAt.After(now)
}

func init() { Register(BackendLinkRequest{}) }