refactor: cleanup browser extension (#5465)

CHANGELOG.md

@@ -39,6 +39,7 @@
 - Dev: Qt Creator now auto-configures Conan when loading the project and skips vcpkg. (#5305)
 - Dev: The MSVC CRT is now bundled with Chatterino as it depends on having a recent version installed. (#5447)
 - Dev: Refactor/unsingletonize `UserDataController`. (#5459)
+- Dev: Cleanup `BrowserExtension`. (#5465)
 
 ## 2.5.1
 

src/BrowserExtension.cpp

@@ -2,13 +2,6 @@
 
 #include "singletons/NativeMessaging.hpp"
 
-#include <QJsonDocument>
-#include <QJsonObject>
-#include <QStringList>
-#include <QTimer>
-
-#include <chrono>
-#include <fstream>
 #include <iostream>
 #include <memory>
 #include <thread>
@@ -16,12 +9,15 @@
 #ifdef Q_OS_WIN
 #    include <fcntl.h>
 #    include <io.h>
-#    include <stdio.h>
+
+#    include <cstdio>
+
 #endif
 
-namespace chatterino {
-
 namespace {
+
+using namespace chatterino;
+
 void initFileMode()
 {
 #ifdef Q_OS_WIN
@@ -30,55 +26,71 @@ namespace {
 #endif
 }
 
+// TODO(Qt6): Use QUtf8String
+void sendToBrowser(QLatin1String str)
+{
+    auto len = static_cast<uint32_t>(str.size());
+    std::cout.write(reinterpret_cast<const char *>(&len), sizeof(len));
+    std::cout.write(str.data(), str.size());
+    std::cout.flush();
+}
+
+QByteArray receiveFromBrowser()
+{
+    uint32_t size = 0;
+    std::cin.read(reinterpret_cast<char *>(&size), sizeof(size));
+
+    if (std::cin.eof())
+    {
+        return {};
+    }
+
+    QByteArray buffer{static_cast<QByteArray::size_type>(size),
+                      Qt::Uninitialized};
+    std::cin.read(buffer.data(), size);
+
+    return buffer;
+}
+
 void runLoop()
 {
-        auto received_message = std::make_shared<std::atomic_bool>(true);
+    auto receivedMessage = std::make_shared<std::atomic_bool>(true);
 
     auto thread = std::thread([=]() {
         while (true)
         {
             using namespace std::chrono_literals;
-                if (!received_message->exchange(false))
+            if (!receivedMessage->exchange(false))
             {
+                sendToBrowser(QLatin1String{
+                    R"({"type":"status","status":"exiting-host","reason":"no message was received in 10s"})"});
                 _Exit(1);
             }
-                std::this_thread::sleep_for(5s);
+            std::this_thread::sleep_for(10s);
         }
     });
 
     while (true)
     {
-            char size_c[4];
-            std::cin.read(size_c, 4);
-
-            if (std::cin.eof())
+        auto buffer = receiveFromBrowser();
+        if (buffer.isNull())
         {
             break;
         }
 
-            auto size = *reinterpret_cast<uint32_t *>(size_c);
+        receivedMessage->store(true);
 
-            std::unique_ptr<char[]> buffer(new char[size + 1]);
-            std::cin.read(buffer.get(), size);
-            *(buffer.get() + size) = '\0';
-
-            auto data = QByteArray::fromRawData(buffer.get(),
-                                                static_cast<int32_t>(size));
-            auto doc = QJsonDocument();
-
-            if (doc.object().value("type") == "nm_pong")
-            {
-                received_message->store(true);
+        nm::client::sendMessage(buffer);
     }
 
-            received_message->store(true);
-
-            nm::client::sendMessage(data);
-        }
+    sendToBrowser(QLatin1String{
+        R"({"type":"status","status":"exiting-host","reason":"received EOF"})"});
     _Exit(0);
 }
 }  // namespace
 
+namespace chatterino {
+
 void runBrowserExtensionHost()
 {
     initFileMode();