Fix calls on Huawei devices: skip addWebMessageListener on Chromium < 119 (#6640)

* Fix calls on Huawei: skip addWebMessageListener on Chromium < 119

* Fix lint issues, log webview version

---------

Co-authored-by: manfrommedan <manfrommedan@users.noreply.github.com>
Co-authored-by: Jorge Martín <jorgem@element.io>

features/call/impl/src/main/kotlin/io/element/android/features/call/impl/utils/WebViewWidgetMessageInterceptor.kt

@@ -140,26 +140,33 @@ class WebViewWidgetMessageInterceptor(
             }
         }
 
-        // Create a WebMessageListener, which will receive messages from the WebView and reply to them
+        // Always register JavascriptInterface as the baseline message channel.
-        val webMessageListener = WebViewCompat.WebMessageListener { _, message, _, _, _ ->
+        // This works on all WebView implementations including Huawei.
-            onMessageReceived(message.data)
+        webView.addJavascriptInterface(object {
-        }
+            @JavascriptInterface
+            fun postMessage(json: String?) {
+                onMessageReceived(json)
+            }
+        }, LISTENER_NAME)
 
-        // Use WebMessageListener if supported, otherwise use JavascriptInterface
+        // Additionally register WebMessageListener on WebViews that reliably support it.
-        if (WebViewFeature.isFeatureSupported(WebViewFeature.WEB_MESSAGE_LISTENER)) {
+        // Huawei WebView (Chromium < 119) reports WEB_MESSAGE_LISTENER as supported
+        // but silently drops messages, so we only trust it on Chromium 119+.
+        // See: https://github.com/element-hq/element-x-android/issues/6632
+        val webViewVersionName = WebViewCompat.getCurrentWebViewPackage(webView.context)?.versionName.orEmpty()
+        Timber.d("Using WebView version: $webViewVersionName")
+        val webViewVersionCode = webViewVersionName.split(".").firstOrNull()?.toIntOrNull() ?: 0
+
+        if (webViewVersionCode >= 119 &&
+            WebViewFeature.isFeatureSupported(WebViewFeature.WEB_MESSAGE_LISTENER)) {
             WebViewCompat.addWebMessageListener(
                 webView,
                 LISTENER_NAME,
                 setOf("*"),
-                webMessageListener
+                WebViewCompat.WebMessageListener { _, message, _, _, _ ->
-            )
+                    onMessageReceived(message.data)
-        } else {
-            webView.addJavascriptInterface(object {
-                @JavascriptInterface
-                fun postMessage(json: String?) {
-                    onMessageReceived(json)
                 }
-            }, LISTENER_NAME)
+            )
         }
     }