The native Alipay provider previously tried to embed the payment page
URL into a QR code on the client — the URL is not a scannable payload
so the QR never worked. Merchants also hit a H5 detection mismatch
whenever the backend UA sniffer missed iPadOS 13+ or embedded browsers,
and the popup window was too small for Alipay's standard checkout
layout (QR + account-login panel on the right), forcing the user to
scroll horizontally and vertically.
Changes:
Backend
- alipay.go: drop QR-on-URL path. Use redirect-only flow —
alipay.trade.page.pay for PC (returns a gateway URL the browser
opens in a new window) and alipay.trade.wap.pay for H5 (returns a
URL the browser jumps to). Both flows produce pages on
openapi.alipaydev.com / excashier.alipay.com; the client never
renders a QR itself.
- payment_handler.go: add optional is_mobile bool to
CreateOrderRequest so the frontend can declare the device
explicitly. Server still falls back to UA sniffing when absent.
Frontend
- types/payment.ts, PaymentView.vue: declare is_mobile in
CreateOrderRequest and pass the computed isMobileDevice() value.
- providerConfig.ts: replace the two fixed POPUP_WINDOW_FEATURES
constants with getPaymentPopupFeatures(), which prefers 1250×900
(Alipay's checkout footprint), clamps to window.screen.avail* and
centers the popup so it never overflows on smaller laptops.
- PaymentQRDialog.vue, PaymentStatusPanel.vue, StripePaymentInline.vue,
PaymentView.vue: use the new helper at all popup call sites.
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