GetJSONString get a string field from http request body.

LogRequest print request headers.

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.

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

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

PaywallRouter handles pricing plans.

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

WxAuthRouter handles wechat login.