[refactor] reorganize platform and wire sources

apps/desktop/src/platform/windows/daemon_backend.cpp

@@ -0,0 +1,64 @@
+#include "platform/daemon_backend.h"
+
+#include <windows.h>
+
+#include <atomic>
+#include <chrono>
+#include <thread>
+#include <vector>
+
+namespace crossdesk::platform {
+namespace {
+
+std::atomic<bool> g_stop_requested{false};
+
+}  // namespace
+
+void ResetDaemonStop() { g_stop_requested.store(false); }
+
+void RequestDaemonStop() { g_stop_requested.store(true); }
+
+bool DaemonStopRequested() { return g_stop_requested.load(); }
+
+bool PrepareDaemon() { return true; }
+
+std::string GetDaemonExecutablePath() {
+  char path[32768] = {};
+  const DWORD length = GetModuleFileNameA(nullptr, path, sizeof(path));
+  return length > 0 && length < sizeof(path) ? std::string(path, length)
+                                             : std::string();
+}
+
+DaemonChildResult RunDaemonChild(const std::string& executable_path,
+                                 const std::function<bool()>& keep_running) {
+  DaemonChildResult result;
+  STARTUPINFOA startup = {sizeof(startup)};
+  PROCESS_INFORMATION process = {};
+  std::string command = "\"" + executable_path + "\" --child";
+  std::vector<char> command_buffer(command.begin(), command.end());
+  command_buffer.push_back('\0');
+  if (!CreateProcessA(nullptr, command_buffer.data(), nullptr, nullptr, FALSE,
+                      0, nullptr, nullptr, &startup, &process)) {
+    return result;
+  }
+
+  result.started = true;
+  while (keep_running()) {
+    const DWORD wait_result = WaitForSingleObject(process.hProcess, 200);
+    if (wait_result == WAIT_OBJECT_0 || wait_result == WAIT_FAILED) break;
+  }
+  if (!keep_running()) {
+    TerminateProcess(process.hProcess, 1);
+    WaitForSingleObject(process.hProcess, 3000);
+  }
+
+  DWORD exit_code = 0;
+  GetExitCodeProcess(process.hProcess, &exit_code);
+  result.exit_code = static_cast<int>(exit_code);
+  result.normal_exit = exit_code == 0;
+  CloseHandle(process.hProcess);
+  CloseHandle(process.hThread);
+  return result;
+}
+
+}  // namespace crossdesk::platform