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#pragma once
#include "base/atomic_shared_ptr.hpp"
#include "base/exception.hpp"
#include "base/logging.hpp"
#include <chrono>
#include <condition_variable>
#include <memory>
#include <mutex>
#include <string>
#include <thread>
namespace pugi
{
class xml_document;
}
namespace editor
{
class EditorConfig;
// Class for multithreaded interruptable waiting.
class Waiter
{
public:
template <typename Rep, typename Period>
bool Wait(std::chrono::duration<Rep, Period> const & waitDuration)
{
std::unique_lock<std::mutex> lock(m_mutex);
if (m_interrupted)
return false;
m_event.wait_for(lock, waitDuration, [this]() { return m_interrupted; });
return true;
}
void Interrupt();
private:
bool m_interrupted = false;
std::mutex m_mutex;
std::condition_variable m_event;
};
// Class which loads config from local drive, checks hash
// for config on server and downloads new config if needed.
class ConfigLoader
{
public:
explicit ConfigLoader(base::AtomicSharedPtr<EditorConfig> & config);
~ConfigLoader();
// Static methods for production and testing.
static void LoadFromLocal(pugi::xml_document & doc);
static std::string GetRemoteHash();
static void GetRemoteConfig(pugi::xml_document & doc);
static bool SaveHash(std::string const & hash, std::string const & filePath);
static std::string LoadHash(std::string const & filePath);
private:
void LoadFromServer();
bool SaveAndReload(pugi::xml_document const & doc);
void ResetConfig(pugi::xml_document const & doc);
base::AtomicSharedPtr<EditorConfig> & m_config;
Waiter m_waiter;
std::thread m_loaderThread;
};
} // namespace editor
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