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fix: use window.open(_blank) to trigger Amber's web/browser intent path

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Amber has two code paths:
- Native path (no Browser.EXTRA_APPLICATION_ID): reads type from intent
  EXTRAS — impossible to set from a WebView URL navigation
- Web/browser path (Browser.EXTRA_APPLICATION_ID set): reads type from
  URL query params — triggered when WebView opens URL as browser intent

window.open(url, '_blank') causes Android WebView to fire a browser
ACTION_VIEW intent which sets Browser.EXTRA_APPLICATION_ID, routing
Amber to parse our nostrsigner: URL query params correctly.

Previous attempts:
- window.location.href: WebView intercepts as asset URL
- window.open(_system): strips query params  
- anchor click: goes through native path (no extras = INVALID type)

Co-authored-by: shakespeare.diy <assistant@shakespeare.diy>
This commit is contained in:
shakespeare.diy 2026-06-18 23:18:02 +07:00
parent f534c413fd
commit 00d9b69f81
1 changed files with 14 additions and 18 deletions
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32
src/lib/amber.ts
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@ -291,26 +291,22 @@ function buildCallbackUrl(): string {
/** /**
* Navigate to an Amber nostrsigner: URL. * Navigate to an Amber nostrsigner: URL.
* *
* In Capacitor WebView, custom URI schemes must be opened via a * Amber has two code paths depending on how it receives the intent:
* temporary <a> element click — this triggers Android's intent system *
* correctly without the WebView trying to load it as an asset URL * 1. NATIVE path (no Browser.EXTRA_APPLICATION_ID): reads type from
* (window.location.href) or stripping query params (window.open _system). * intent EXTRAS — not set when coming from a WebView URL navigation.
*
* 2. WEB/BROWSER path (Browser.EXTRA_APPLICATION_ID present): reads type
* from URL query params — set when a browser/WebView opens a URL.
*
* We need the WEB path. window.open('url', '_blank') causes the WebView
* to open the URL as a browser navigation, which sets
* Browser.EXTRA_APPLICATION_ID and routes Amber to parse our URL params.
*/ */
function openAmberUrl(url: string): void { function openAmberUrl(url: string): void {
const isCapacitor = !!(window as unknown as { Capacitor?: { isNativePlatform?: () => boolean } }).Capacitor?.isNativePlatform?.(); // _blank triggers the browser intent path in Android WebView,
if (isCapacitor) { // which sets Browser.EXTRA_APPLICATION_ID so Amber reads URL query params.
// Create a temporary anchor and click it — this is the only reliable window.open(url, '_blank');
// way to fire an Android intent from a Capacitor WebView without
// the WebView intercepting the navigation or stripping query params.
const a = document.createElement('a');
a.href = url;
a.style.display = 'none';
document.body.appendChild(a);
a.click();
setTimeout(() => document.body.removeChild(a), 100);
} else {
window.location.href = url;
}
} }
/** /**