Fix MoonPay "Send with Edge" sell link

[j0ntz]

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

none

Requirements

If you have made any visual changes to the GUI. Make sure you have:

• Tested on iOS device
• Tested on Android device
• Tested on small-screen device (iPod Touch)
• Tested on large-screen device (tablet)

Description

Asana task

Asana: https://app.asana.com/1/9976422036640/project/1207384676342554/task/1209649066660320

Fixes the MoonPay "Send with Edge" sell link. When a user starts a MoonPay sell order but has not completed the crypto deposit, MoonPay shows a "complete payment" button (in their email and in the buy.moonpay.com/trade_history page) that reflects back the deposit redirect URL our app hands MoonPay. That button dead-ended on a static "Redirecting to Payment..." page, so the user could not finish the deposit (the reported lead case is an XRP sell that also needs a destination tag).

Root cause (regression analysis). The redirect URL we pass to MoonPay is RETURN_URL_PAYMENT in src/plugins/gui/providers/common.ts. It has been https://edge.app/redirect/payment/ since it was introduced (Oct 2023); it was never a deep.edge.app value, so this is not a value regression. The apex edge.app host is not claimed as a universal link on iOS (ios/edge/edge.entitlements) or Android (AndroidManifest.xml) - only deep.edge.app, dl.edge.app, and return.edge.app are. The constant was designed as an in-app webview interception sentinel (uri.startsWith(RETURN_URL_PAYMENT)), which works in-app but cannot open the app from an external click. The buy redirects already use deep.edge.app; only the sell payment redirect used the unclaimed apex.

Fix.

• Point RETURN_URL_PAYMENT at the claimed deep.edge.app host, matching the buy redirects. In-app interception is host-agnostic (prefix startsWith), so the existing webview flows (MoonPay and Paybis, ramp and legacy) are unaffected.
• Parse the redirect/payment deep link into a new paymentRedirect link type and route it to the Send scene, resolving the wallet from the base currency code and pre-filling the deposit address, amount, and destination tag/memo (via uniqueIdentifier). Both the deep.edge.app and legacy edge.app hosts are parsed.

No new user-facing strings; reuses the existing Send scene and wallet picker.

Testing.

• Unit tests for the parser (real-world MoonPay URL, XRP with destination tag, deep.edge.app host, and missing-param browser fallback).
• verify-repo.sh (eslint + jest) passes; tsc clean.
• Driven on the iOS simulator: firing edge://redirect/payment/?baseCurrencyCode=btc&baseCurrencyAmount=0.001&depositWalletAddress=bc1q... opens the wallet picker (all BTC wallets) and then the Send scene pre-filled with the deposit address and 0.001 BTC. Screenshots below. The slider is not confirmed (no broadcast).

---

Note

Medium Risk
Changes fiat sell completion URLs and deep-link routing into Send with user funds; scope is bounded by reusing existing Send/wallet picker and prefix-based in-app interception.

Overview
Fixes MoonPay "Send with Edge" sell completion links so external taps open Edge instead of a dead-end redirect page.

RETURN_URL_PAYMENT now uses https://deep.edge.app/redirect/payment/ (claimed universal-link host) instead of the unclaimed edge.app apex; in-app WebView interception via startsWith(RETURN_URL_PAYMENT) is unchanged.

Adds a paymentRedirect deep-link type: /redirect/payment/ URLs (MoonPay query params: baseCurrencyCode, depositWalletAddress, optional amount and depositWalletAddressTag) parse on both deep.edge.app and legacy edge.app. Missing required params degrade to noop (edge scheme) or browser (https apex). Handling resolves matching native/token assets, wallet picker, then handleWalletUris into Send with deposit address, amount, and memo/tag.

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[j0ntz]

📸 Test evidence (iOS sim)

agent proof 1209649066660320 01 wallet picker

agent proof 1209649066660320 02 send prefilled

Captured by the agent's in-app test run (build-and-test).

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