DumpRequest print request headers.

GetJSONString get a string field from http request body.

NewGiftCardRouter create a new instance of GiftCardRouter.

NewPaywallRouter creates a new instance of pricing router.

NewStripeRouter initializes StripeRouter.

NewWxAuth creates a new WxLoginRouter instance.

NoCache set Cache-Control request header.

RequireFtcID middleware makes sure all request header contains `X-User-Id` field.

RequireFtcOrUnionID middleware makes sure all request header contains `X-User-Id` field.

RequireUnionID middleware makes sure all request header contains `X-Union-Id` field.

WxCallbackHandler is used to help web app to get OAuth 2.0 code.

PaywallRouter handles pricing plans.

SubsRouter is the base type used to handle shared payment operations.

UserShared wraps functionalities common to AuthRouter and AccountRouter.

WxAuthRouter handles wechat login.