More background work/status

SiaDrive.Api/SiaApi.cpp

@@ -7,7 +7,8 @@ using namespace Sia::Api;
 CSiaApi::CSiaApi(const SiaHostConfig& hostConfig) :
 	_siaCurl(hostConfig),
 	_wallet(new CSiaWallet(_siaCurl)),
-	_renter(new CSiaRenter(_siaCurl))
+	_renter(new CSiaRenter(_siaCurl)),
+	_consensus(new CSiaConsensus(_siaCurl))
 {
 }
 
@@ -48,4 +49,9 @@ CSiaWalletPtr CSiaApi::GetWallet() const
 CSiaRenterPtr CSiaApi::GetRenter() const
 {
 	return _renter;
+}
+
+CSiaConsensusPtr CSiaApi::GetConsensus() const
+{
+	return _consensus;
 }

SiaDrive.Api/SiaApi.h

@@ -125,6 +125,32 @@ public:
 		_SiaApiError GetFileTree(std::shared_ptr<_CSiaFileTree>& siaFileTree) const;
 	};
 
+	class AFX_EXT_CLASS _CSiaConsensus
+	{
+		friend CSiaApi;
+	private:
+		_CSiaConsensus(CSiaCurl& siaCurl);
+
+	public:
+		~_CSiaConsensus();
+
+	private:
+		CSiaCurl _siaCurl;
+
+	private:
+		HANDLE _stopEvent;
+		std::unique_ptr<std::thread> _refreshThread;
+
+	// Properties
+		Property(std::uint64_t, Height, public, private)
+		Property(bool, Synced, public, private)
+		Property(String, CurrentBlock, public, private)
+
+	private:
+		void StartRefreshThread();
+		void StopRefreshThread();
+	};
+
 public:
 	CSiaApi(const SiaHostConfig& hostConfig);
 
@@ -135,6 +161,7 @@ private:
 	CSiaCurl _siaCurl;
 	std::shared_ptr<_CSiaWallet> _wallet;
 	std::shared_ptr<_CSiaRenter> _renter;
+	std::shared_ptr<_CSiaConsensus> _consensus;
 
 public:
 	static String FormatToSiaPath(String path);
@@ -142,6 +169,7 @@ public:
 public:
 	std::shared_ptr<_CSiaWallet> GetWallet() const;
 	std::shared_ptr<_CSiaRenter> GetRenter() const;
+	std::shared_ptr<_CSiaConsensus> GetConsensus() const;
 	String GetServerVersion() const;
 };
 
@@ -149,8 +177,10 @@ typedef CSiaApi::_SiaApiError SiaApiError;
 typedef CSiaApi::_SiaSeedLanguage SiaSeedLanguage;
 typedef CSiaApi::_CSiaWallet CSiaWallet;
 typedef CSiaApi::_CSiaRenter CSiaRenter;
+typedef CSiaApi::_CSiaConsensus CSiaConsensus;
 typedef std::shared_ptr<CSiaWallet> CSiaWalletPtr;
 typedef std::shared_ptr<CSiaRenter> CSiaRenterPtr;
+typedef std::shared_ptr<CSiaConsensus> CSiaConsensusPtr;
 typedef CSiaApi::_CSiaFile CSiaFile;
 typedef std::shared_ptr<CSiaFile> CSiaFilePtr;
 typedef std::vector<CSiaFilePtr> CSiaFileCollection;

SiaDrive.Api/SiaConsensus.cpp

@@ -0,0 +1,52 @@
+#include "stdafx.h"
+#include "SiaApi.h"
+
+using namespace Sia::Api;
+
+CSiaApi::_CSiaConsensus::_CSiaConsensus(CSiaCurl& siaCurl) :
+	_siaCurl(siaCurl.GetHostConfig()), // IMPORTANT: Need a copy of CSiaCurl for use in thread
+	_stopEvent(::CreateEvent(nullptr, FALSE, FALSE, nullptr))
+{
+	StartRefreshThread();
+}
+
+CSiaApi::_CSiaConsensus::~_CSiaConsensus()
+{
+	StopRefreshThread();
+	::CloseHandle(_stopEvent);
+}
+
+void CSiaApi::_CSiaConsensus::StartRefreshThread()
+{
+	if (!_refreshThread)
+	{
+		_refreshThread.reset(new std::thread([this]() {
+			do
+			{
+				json result;
+				if (API_SUCCESS(SiaCurlError, _siaCurl.Get(L"/consensus", result)))
+				{
+					SetHeight(result["height"].get<std::uint64_t>());
+					SetSynced(result["synced"].get<bool>());
+					SetCurrentBlock(CA2W(result["currentblock"].get<std::string>().c_str()).m_psz);
+				}
+				else
+				{
+					SetHeight(0);
+					SetSynced(false);
+					SetCurrentBlock(L"");
+				}
+			} while (::WaitForSingleObject(_stopEvent, 2000) == WAIT_TIMEOUT);
+		}));
+	}
+}
+
+void CSiaApi::_CSiaConsensus::StopRefreshThread()
+{
+	if (_refreshThread)
+	{
+		SetEvent(_stopEvent);
+		_refreshThread->join();
+		_refreshThread.reset(nullptr);
+	}
+}

SiaDrive.Api/SiaDrive.Api.vcxproj

@@ -205,6 +205,7 @@
     </ClCompile>
     <ClCompile Include="SiaApi.cpp" />
     <ClCompile Include="SiaCommon.cpp" />
+    <ClCompile Include="SiaConsensus.cpp" />
     <ClCompile Include="SiaCurl.cpp" />
     <ClCompile Include="SiaDrive.Api.cpp" />
     <ClCompile Include="SiaDriveConfig.cpp" />

SiaDrive.Api/SiaDrive.Api.vcxproj.filters

@@ -51,6 +51,9 @@
     <ClCompile Include="SiaWallet.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="SiaConsensus.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="SiaDrive.Api.def">

SiaDrive.Api/stdafx.h

@@ -38,3 +38,4 @@
 
 #include <afxsock.h>            // MFC socket extensions
 
+#include <thread>