windows: Handle magnet links & torrent files

app/lib/main.dart

@@ -8,6 +8,7 @@ import 'package:pikatorrent/models/session.dart';
 import 'package:pikatorrent/models/torrents.dart';
 import 'package:pikatorrent/navigation/router.dart';
 import 'package:pikatorrent/platforms/android/foreground_service.dart';
+import 'package:pikatorrent/platforms/windows/register_app.dart';
 import 'package:pikatorrent/utils/device.dart';
 import 'package:provider/provider.dart';
 import 'package:window_manager/window_manager.dart';
@@ -84,6 +85,8 @@ void main() async {
       // when live reloading.
       debugPrint(e.toString());
     }
+  } else if (Platform.isWindows) {
+    registerAppInRegistry();
   }
 
   runApp(const PikaTorrent());

app/lib/navigation/app_shell_route.dart

@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:app_links/app_links.dart';
 import 'package:flutter/material.dart';
 import 'package:pikatorrent/dialogs/add_torrent.dart';
@@ -44,7 +46,7 @@ class _AppShellRouteState extends State<AppShellRoute> {
       } else if (uriString.startsWith(appUri)) {
         // App URI
         _openAddTorrentDialog(getTorrentLink(uriString), null);
-      } else if (uriString.startsWith('/')) {
+      } else if (File(uriString).existsSync()) {
         // Filesystem path
         _openAddTorrentDialog(null, uriString);
       }

app/lib/platforms/windows/register_app.dart

@@ -0,0 +1,69 @@
+import 'dart:io';
+
+import 'package:win32_registry/win32_registry.dart';
+
+const String appName = 'PikaTorrent';
+const String appCapabilityPath = 'Software\\$appName\\Capabilities';
+
+Future<void> registerAppInRegistry() async {
+  await registerAppCmd();
+  await registerApp();
+  await registerCapabilities();
+}
+
+Future<void> registerAppCmd() async {
+  String appPath = Platform.resolvedExecutable;
+
+  String protocolRegKey = 'Software\\Classes\\$appName';
+  String protocolCmdRegKey = 'shell\\open\\command';
+  RegistryValue protocolCmdRegValue = RegistryValue(
+    '',
+    RegistryValueType.string,
+    '"$appPath" "%1"',
+  );
+
+  final regKey = Registry.currentUser.createKey(protocolRegKey);
+  regKey.createKey(protocolCmdRegKey).createValue(protocolCmdRegValue);
+}
+
+Future<void> registerApp() async {
+  String appRegKey = 'Software\\RegisteredApplications';
+  RegistryValue appCapability = const RegistryValue(
+    appName,
+    RegistryValueType.string,
+    appCapabilityPath,
+  );
+
+  final regKey = Registry.currentUser.createKey(appRegKey);
+  regKey.createValue(appCapability);
+}
+
+Future<void> registerCapabilities() async {
+  final regKey = Registry.currentUser.createKey('Software\\$appName\\Capabilities');
+  regKey.createValue(const RegistryValue(
+    'ApplicationDescription',
+    RegistryValueType.string,
+    'BitTorrent software',
+  ));
+
+ final fileRegKey = Registry.currentUser.createKey('Software\\$appName\\Capabilities\\FILEAssociations');
+  fileRegKey.createValue(const RegistryValue(
+    '.torrent',
+    RegistryValueType.string,
+    appName,
+  ));
+
+  final mimeRegKey = Registry.currentUser.createKey('Software\\$appName\\Capabilities\\MIMEAssociations');
+  mimeRegKey.createValue(const RegistryValue(
+    'application/x-bittorrent',
+    RegistryValueType.string,
+    appName,
+  ));
+
+  final urlRegKey = Registry.currentUser.createKey('Software\\$appName\\Capabilities\\URLAssociations');
+  urlRegKey.createValue(const RegistryValue(
+    'magnet',
+    RegistryValueType.string,
+    appName,
+  ));
+}

app/pubspec.lock

@@ -20,11 +20,12 @@ packages:
   app_links:
     dependency: "direct main"
     description:
-      name: app_links
-      sha256: ad1a6d598e7e39b46a34f746f9a8b011ee147e4c275d407fa457e7a62f84dd99
-      url: "https://pub.dev"
-    source: hosted
-    version: "6.3.2"
+      path: app_links
+      ref: d1aa2be128708e976dc88154854355217a3ff9c4
+      resolved-ref: d1aa2be128708e976dc88154854355217a3ff9c4
+      url: "https://github.com/G-Ray/app_links"
+    source: git
+    version: "6.4.0"
   app_links_linux:
     dependency: transitive
     description:
@@ -109,10 +110,10 @@ packages:
     dependency: "direct main"
     description:
       name: collection
-      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      sha256: a1ace0a119f20aabc852d165077c036cd864315bd99b7eaa10a60100341941bf
       url: "https://pub.dev"
     source: hosted
-    version: "1.18.0"
+    version: "1.19.0"
   content_resolver:
     dependency: "direct main"
     description:
@@ -397,18 +398,18 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: "3f87a60e8c63aecc975dda1ceedbc8f24de75f09e4856ea27daf8958f2f0ce05"
+      sha256: "7bb2830ebd849694d1ec25bf1f44582d6ac531a57a365a803a6034ff751d2d06"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.5"
+    version: "10.0.7"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
       name: leak_tracker_flutter_testing
-      sha256: "932549fb305594d82d7183ecd9fa93463e9914e1b67cacc34bc40906594a1806"
+      sha256: "9491a714cca3667b60b5c420da8217e6de0d1ba7a5ec322fab01758f6998f379"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.5"
+    version: "3.0.8"
   leak_tracker_testing:
     dependency: transitive
     description:
@@ -845,7 +846,7 @@ packages:
     dependency: transitive
     description: flutter
     source: sdk
-    version: "0.0.99"
+    version: "0.0.0"
   source_span:
     dependency: transitive
     description:
@@ -866,10 +867,10 @@ packages:
     dependency: transitive
     description:
       name: stack_trace
-      sha256: "73713990125a6d93122541237550ee3352a2d84baad52d375a4cad2eb9b7ce0b"
+      sha256: "9f47fd3630d76be3ab26f0ee06d213679aa425996925ff3feffdec504931c377"
       url: "https://pub.dev"
     source: hosted
-    version: "1.11.1"
+    version: "1.12.0"
   stream_channel:
     dependency: transitive
     description:
@@ -882,10 +883,10 @@ packages:
     dependency: transitive
     description:
       name: string_scanner
-      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      sha256: "688af5ed3402a4bde5b3a6c15fd768dbf2621a614950b17f04626c431ab3c4c3"
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0"
   term_glyph:
     dependency: transitive
     description:
@@ -898,10 +899,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "5b8a98dafc4d5c4c9c72d8b31ab2b23fc13422348d2997120294d3bac86b4ddb"
+      sha256: "664d3a9a64782fcdeb83ce9c6b39e78fd2971d4e37827b9b06c3aa1edc5e760c"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.2"
+    version: "0.7.3"
   timezone:
     dependency: transitive
     description:
@@ -1026,10 +1027,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: "5c5f338a667b4c644744b661f309fb8080bb94b18a7e91ef1dbd343bed00ed6d"
+      sha256: f6be3ed8bd01289b34d679c2b62226f63c0e69f9fd2e50a6b3c1c729a961041b
       url: "https://pub.dev"
     source: hosted
-    version: "14.2.5"
+    version: "14.3.0"
   web:
     dependency: transitive
     description:
@@ -1047,7 +1048,7 @@ packages:
     source: hosted
     version: "5.7.2"
   win32_registry:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: win32_registry
       sha256: "21ec76dfc731550fd3e2ce7a33a9ea90b828fdf19a5c3bcf556fa992cfa99852"

app/pubspec.yaml

@@ -54,7 +54,11 @@ dependencies:
   handy_window: ^0.4.0
   fuzzywuzzy: ^1.2.0
   flutter_local_notifications: ^18.0.1
-  app_links: ^6.3.2
+  app_links:
+    git:
+      url: "https://github.com/G-Ray/app_links"
+      path: app_links
+      ref: d1aa2be128708e976dc88154854355217a3ff9c4
   content_resolver: ^0.3.2
   permission_handler: ^11.3.1
   external_path: ^2.0.1
@@ -67,6 +71,7 @@ dependencies:
   window_manager: ^0.4.3
   pub_semver: ^2.1.5
   http: ^1.2.2
+  win32_registry: ^1.1.5
 
 dev_dependencies:
   flutter_test:

app/windows/runner/main.cpp

@@ -4,9 +4,48 @@
 
 #include "flutter_window.h"
 #include "utils.h"
+#include "app_links/app_links_plugin_c_api.h"
+
+bool SendAppLinkToInstance(const std::wstring& title) {
+  // Find our exact window
+  HWND hwnd = ::FindWindow(L"FLUTTER_RUNNER_WIN32_WINDOW", title.c_str());
+
+  if (hwnd) {
+    // Dispatch new link to current window
+    SendAppLink(hwnd);
+
+    // (Optional) Restore our window to front in same state
+    WINDOWPLACEMENT place = { sizeof(WINDOWPLACEMENT) };
+    GetWindowPlacement(hwnd, &place);
+
+    switch(place.showCmd) {
+      case SW_SHOWMAXIMIZED:
+          ShowWindow(hwnd, SW_SHOWMAXIMIZED);
+          break;
+      case SW_SHOWMINIMIZED:
+          ShowWindow(hwnd, SW_RESTORE);
+          break;
+      default:
+          ShowWindow(hwnd, SW_NORMAL);
+          break;
+    }
+
+    SetWindowPos(0, HWND_TOP, 0, 0, 0, 0, SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE);
+    SetForegroundWindow(hwnd);
+    // END (Optional) Restore
+
+    // Window has been found, don't create another one.
+    return true;
+  }
+
+  return false;
+}
 
 int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
                       _In_ wchar_t *command_line, _In_ int show_command) {
+  if (SendAppLinkToInstance(L"PikaTorrent")) {
+    return EXIT_SUCCESS;
+  }
   // Attach to console when present (e.g., 'flutter run') or create a
   // new console when running with a debugger.
   if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent()) {