zns

type FreeTicketRepo struct{}

type Handler struct {
	Upstream string
	Repo     TicketRepo
	AltSvc   string
}

type Order struct {
	OrderNo string
	Amount  string
	TradeNo string
}

type Pay interface {
	NewQR(order Order, notifyURL string) (string, error)
	OnPay(req *http.Request) (Order, error)
}

type Ticket struct {
	ID         int    `db:"id" json:"id"`
	Token      string `db:"token" json:"-"`
	Bytes      int    `db:"bytes" json:"bytes"`
	TotalBytes int    `db:"total_bytes" json:"total_bytes"`
	PayOrder   string `db:"pay_order" json:"pay_order"`
	BuyOrder   string `db:"buy_order" json:"buy_order"`

	Created time.Time `db:"created" json:"created"`
	Updated time.Time `db:"updated" json:"updated"`
	Expires time.Time `db:"expires" json:"expires"`
}

type TicketHandler struct {
	MBpCNY int
	Pay    Pay
	Repo   TicketRepo
	AltSvc string
}

type TicketRepo interface {
	// New create and save one Ticket
	New(token string, bytes int, trade string, order string) error
	// Cost decreases  bytes of one Ticket
	Cost(token string, bytes int) error
	// List fetches all current Tickets with bytes available.
	List(token string, limit int) ([]Ticket, error)
}