NewAliPayResult converts ali payment result.

NewAliWebhookResult builds PaymentResult from alipay webhook notification.

NewConfirmationResult confirms an order based on the payment result and current membership.

NewWxPayResult creates a new PaymentResult from the result of querying wechat order.

NewWxWebhookResult builds PaymentResult from wechat pay webhook notification.

PaymentTitle is used as the value of `subject` for alipay, and `body` for wechat pay.

StmtConfirmOrder build SQL to set an order confirmed.

StmtInsertOrder a new order.

StmtLockOrder locks a row to retrieve onl the minimal fields used to determine whether the order is confirmed.

StmtOrderHeader retrieves the first half of an order to circumvent the problem of oversize packet transfer between db and server.

AlipayBrowserIntent represents an order creates for alipay inside browsers.

AlipayNativeIntent is an order created inside a native app.

ConfirmationParams contains data used to invoice an order.

ConfirmationResult contains all the data in the process of confirming an order.

LockedOrder lock a row of order and retrieves the minimal data.

Order contains the details of a user's action to place an order.

OrderParams contains the item user want to buy.

PaymentResult unifies ali and wx webhook payload, or query order.

PurchasedTimeParams is used to deduce an order's purchase period.

WxPayBrowserIntent creates order for payment via wechat made in browsers.

WepayEmbedBrowserOrder responds to purchase made in wechat embedded browser.

WxPayNativeAppIntent creates an order used by native apps.