welcome: init welcome manager (#12409)

---------

Co-authored-by: Mihai Fufezan <mihai@fufexan.net>

src/managers/WelcomeManager.cpp

@@ -0,0 +1,31 @@
+#include "WelcomeManager.hpp"
+#include "../debug/Log.hpp"
+#include "../config/ConfigValue.hpp"
+#include "../helpers/fs/FsUtils.hpp"
+
+#include <hyprutils/os/Process.hpp>
+
+using namespace Hyprutils::OS;
+
+CWelcomeManager::CWelcomeManager() {
+    static auto PAUTOGEN = CConfigValue<Hyprlang::INT>("autogenerated");
+
+    if (!*PAUTOGEN) {
+        Debug::log(LOG, "[welcome] skipping, not autogen");
+        return;
+    }
+
+    if (!NFsUtils::executableExistsInPath("hyprland-welcome")) {
+        Debug::log(LOG, "[welcome] skipping, no welcome app");
+        return;
+    }
+
+    m_fired = true;
+
+    CProcess welcome("hyprland-welcome", {});
+    welcome.runAsync();
+}
+
+bool CWelcomeManager::fired() {
+    return m_fired;
+}

src/managers/WelcomeManager.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "../helpers/memory/Memory.hpp"
+
+class CWelcomeManager {
+  public:
+    CWelcomeManager();
+
+    // whether the welcome screen was shown this boot.
+    bool fired();
+
+  private:
+    bool m_fired = false;
+};
+
+inline UP<CWelcomeManager> g_pWelcomeManager;