feat: add Android sharing intent support, network security configuration, and headless link extraction service

android/app/src/main/AndroidManifest.xml

@@ -1,8 +1,14 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+
     <application
         android:label="fastwatcher"
         android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher">
+        android:icon="@mipmap/ic_launcher"
+        android:networkSecurityConfig="@xml/network_security_config">
         <activity
             android:name=".MainActivity"
             android:exported="true"

android/app/src/main/res/xml/network_security_config.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+    <base-config cleartextTrafficPermitted="true">
+        <trust-anchors>
+            <certificates src="system" />
+            <certificates src="user" />
+        </trust-anchors>
+    </base-config>
+</network-security-config>

lib/features/sender/data/services/link_extraction_service.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter_inappwebview/flutter_inappwebview.dart';
 
 abstract class ILinkExtractionService {
@@ -17,6 +18,24 @@ class LinkExtractionService implements ILinkExtractionService {
     
     _headlessWebView = HeadlessInAppWebView(
       initialUrlRequest: URLRequest(url: WebUri(pageUrl)),
+      initialSettings: InAppWebViewSettings(
+        javaScriptEnabled: true,
+        isInspectable: true,
+        mixedContentMode: MixedContentMode.MIXED_CONTENT_ALWAYS_ALLOW,
+        userAgent: "Mozilla/5.0 (Linux; Android 13; Pixel 7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Mobile Safari/537.36",
+      ),
+      onReceivedServerTrustAuthRequest: (controller, challenge) async {
+        return ServerTrustAuthResponse(action: ServerTrustAuthResponseAction.PROCEED);
+      },
+      onConsoleMessage: (controller, consoleMessage) {
+        debugPrint("WEBVIEW CONSOLE: ${consoleMessage.message}");
+      },
+      onLoadError: (controller, url, code, message) {
+        debugPrint("WEBVIEW ERROR: $message ($code) for $url");
+      },
+      onLoadHttpError: (controller, url, statusCode, description) {
+        debugPrint("WEBVIEW HTTP ERROR: $description ($statusCode) for $url");
+      },
       onLoadResource: (controller, resource) {
         final url = resource.url.toString();
         if (_isVideoUrl(url)) {