New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/storage/downloading_policy.cpp

@@ -0,0 +1,45 @@
+#include "storage/downloading_policy.hpp"
+
+#include "platform/platform.hpp"
+
+using namespace std::chrono;
+
+void StorageDownloadingPolicy::EnableCellularDownload(bool enabled)
+{
+  m_cellularDownloadEnabled = enabled;
+  m_disableCellularTime = steady_clock::now() + hours(1);
+}
+
+bool StorageDownloadingPolicy::IsCellularDownloadEnabled()
+{
+  if (m_cellularDownloadEnabled && steady_clock::now() > m_disableCellularTime)
+    m_cellularDownloadEnabled = false;
+
+  return m_cellularDownloadEnabled;
+}
+
+bool StorageDownloadingPolicy::IsDownloadingAllowed()
+{
+  return !(GetPlatform().ConnectionStatus() == Platform::EConnectionType::CONNECTION_WWAN &&
+           !IsCellularDownloadEnabled());
+}
+
+void StorageDownloadingPolicy::ScheduleRetry(storage::CountriesSet const & failedCountries,
+                                             TProcessFunc const & func)
+{
+  if (IsDownloadingAllowed() && !failedCountries.empty() && m_autoRetryCounter > 0)
+  {
+    m_downloadRetryFailed = false;
+    auto action = [this, func, failedCountries] {
+      --m_autoRetryCounter;
+      func(failedCountries);
+    };
+    m_autoRetryWorker.RestartWith([action]{ GetPlatform().RunTask(Platform::Thread::Gui, action); });
+  }
+  else
+  {
+    if (!failedCountries.empty())
+      m_downloadRetryFailed = true;
+    m_autoRetryCounter = kAutoRetryCounterMax;
+  }
+}