Refactoring and added common utils

SiaDrive.Api/SiaCommon.cpp

@@ -3,3 +3,34 @@
 #include <ttmath/ttmath.h>
 
 using namespace Sia::Api;
+
+
+/*
+// avgHostMetric computes the average of the metric given by `metric` on the
+// list of `hosts`.
+const avgHostMetric = (hosts, metric) = >
+hosts.reduce((sum, host) = > sum.add(host[metric]), new BigNumber(0))
+.dividedBy(hosts.size)
+
+// avgStorageCost returns the average storage cost from a list of hosts given a
+// period (blocks) and redundancy.
+const avgStorageCost = (hosts, period, redundancy) = >
+avgHostMetric(hosts, 'storageprice')
+.times(period)
+.plus(avgHostMetric(hosts, 'uploadbandwidthprice'))
+.times(redundancy)
+.plus(avgHostMetric(hosts, 'downloadbandwidthprice'))
+
+// Compute an estimated amount of storage from an amount of funds (Hastings)
+// and a list of hosts.
+export const estimatedStorage = (funds, hosts) = > {
+	const validHosts = List(hosts).take(28)
+		const avgStorage = avgStorageCost(validHosts, allowancePeriod, baseRedundancy)
+
+		let fee = SiaAPI.siacoinsToHastings(baseFee)
+		fee = fee.plus(avgHostMetric(validHosts, 'contractprice').times(ncontracts))
+		fee = fee.plus(funds.minus(fee).times(siafundRate))
+
+		return '~' + readableFilesize(Math.max(0, funds.minus(fee).dividedBy(avgStorage).toNumber().toPrecision(1)))
+}
+*/

SiaDrive.Api/SiaCommon.h

@@ -20,7 +20,8 @@ using json = nlohmann::json;
 NS_BEGIN(Sia)
 NS_BEGIN(Api)
 
-#define String std::wstring
+typedef std::wstring String;
+#define DEFAULT_CONFIG_FILE_PATH L".\\Config\\SiaDriveConfig.json"
 
 #define Property(type, name, get_access, set_access) \
 private:\
@@ -43,10 +44,12 @@ struct SiaHostConfig
 	String RequiredVersion;
 };
 
-#define API_SUCCESS(t, x) (x == t::Success)
+template<typename T>
-
+inline bool ApiSuccess(const T& t) {
-#define DEFAULT_CONFIG_FILE_PATH L".\\Config\\SiaDriveConfig.json"
+	return t == T::Success;
+}
 
+typedef ttmath::UInt<256> Hastings;
 typedef ttmath::Big<1, 30> SiaCurrency;
 /*
  BigNumber.config({ EXPONENTIAL_AT: 1e+9 })
@@ -72,4 +75,41 @@ static inline String SiaCurrencyToString(const SiaCurrency& value)
 	return value.ToWString(conv);
 }
 
+class IHost
+{
+public:
+	IHost() {}
+	virtual ~IHost() {}
+
+public:
+	virtual Hastings GetStoragePrice() const = 0;
+	virtual Hastings GetDownloadPrice() const = 0;
+	virtual Hastings GetUploadPrice() const = 0;
+};
+
+template<typename T, typename R>
+R CalculateAveragePrice(const std::vector<T>& v, std::function<R(const T& t)> PriceGetter)
+{
+	R result = v.size() ? std::accumulate(std::next(v.begin()), v.end(), PriceGetter(v[0]), [&](const R& a, const T& b) {
+		return a + PriceGetter(b);
+	}).Div(v.size()) : 0;
+
+	return result;
+}
+
+inline Hastings CalculateAverageHostPrice(const std::vector<IHost>& hosts)
+{
+	return CalculateAveragePrice<IHost, Hastings>(hosts, [](const IHost& host)->Hastings { return host.GetStoragePrice(); });
+}
+
+inline Hastings CalculateAverageDownloadPrice(const std::vector<IHost>& hosts)
+{
+	return CalculateAveragePrice<IHost, Hastings>(hosts, [](const IHost& host)->Hastings { return host.GetDownloadPrice(); });
+}
+
+inline Hastings CalculateAverageUploadPrice(const std::vector<IHost>& hosts)
+{
+	return CalculateAveragePrice<IHost, Hastings>(hosts, [](const IHost& host)->Hastings { return host.GetUploadPrice(); });
+}
+
 NS_END(2)

SiaDrive.Api/SiaConsensus.cpp

@@ -24,7 +24,7 @@ void CSiaApi::_CSiaConsensus::StartRefreshThread()
 			do
 			{
 				json result;
-				if (API_SUCCESS(SiaCurlError, _siaCurl.Get(L"/consensus", result)))
+				if (ApiSuccess(_siaCurl.Get(L"/consensus", result)))
 				{
 					SetHeight(result["height"].get<std::uint64_t>());
 					SetSynced(result["synced"].get<bool>());

SiaDrive.Api/SiaCurl.cpp

@@ -62,7 +62,7 @@ SiaCurlError CSiaCurl::ProcessResponse(const int& res, const std::string& result
 	if (res == CURLE_OK)
 	{
 		ret = CheckHttpError(result);
-		if (API_SUCCESS(SiaCurlError, ret))
+		if (ApiSuccess(ret))
 		{
 			ret = (result.length() ? CheckApiError((response = json::parse(result.c_str()))) : SiaCurlError::Success);
 		}
@@ -114,13 +114,13 @@ bool CSiaCurl::CheckVersion(SiaCurlError& error) const
 		}
 	}
 
-	return API_SUCCESS(SiaCurlError, error);
+	return ApiSuccess(error);
 }
 
 String CSiaCurl::GetServerVersion() const
 {
 	json response;
-	if (API_SUCCESS(SiaCurlError, _Get(L"/daemon/version", response)))
+	if (ApiSuccess(_Get(L"/daemon/version", response)))
 	{
 		return String(CA2W(response["version"].get<std::string>().c_str()));
 	}

SiaDrive.Api/SiaRenter.cpp

@@ -17,7 +17,7 @@ SiaApiError CSiaApi::_CSiaRenter::FileExists(const String& siaPath, bool& exists
 {
 	CSiaFileTreePtr siaFileTree;
 	SiaApiError ret = GetFileTree(siaFileTree);
-	if (API_SUCCESS(SiaApiError, ret))
+	if (ApiSuccess(ret))
 	{
 		exists = siaFileTree->FileExists(siaPath);
 	}
@@ -44,7 +44,7 @@ SiaApiError CSiaApi::_CSiaRenter::GetFileTree(CSiaFileTreePtr& siaFileTree) cons
 	SiaApiError ret = SiaApiError::RequestError;
 	siaFileTree.reset(new CSiaFileTree(_siaCurl));
 	json result;
-	if (API_SUCCESS(SiaCurlError, _siaCurl.Get(L"/renter/files", result)))
+	if (ApiSuccess(_siaCurl.Get(L"/renter/files", result)))
 	{
 		siaFileTree->BuildTree(result);
 		ret = SiaApiError::Success;

SiaDrive.Api/SiaWallet.cpp

@@ -38,7 +38,7 @@ bool CSiaApi::_CSiaWallet::Refresh()
 {
 	json result;
 	SiaCurlError error = _siaCurl.Get(L"/wallet", result);
-	if (API_SUCCESS(SiaCurlError, error))
+	if (ApiSuccess(error))
 	{
 		SetCreated(result["encrypted"].get<bool>());
 		SetLocked(!result["unlocked"].get<bool>());
@@ -60,7 +60,7 @@ SiaApiError CSiaApi::_CSiaWallet::Create(const SiaSeedLanguage& seedLanguage, St
 			error = SiaApiError::RequestError;
 			json result;
 			SiaCurlError cerror = _siaCurl.Post(L"/wallet/init", { {L"dictionary", SeedLangToString(seedLanguage)} }, result);
-			if (API_SUCCESS(SiaCurlError, cerror))
+			if (ApiSuccess(cerror))
 			{
 				error = SiaApiError::Success;
 				seed = CA2W(result["primaryseed"].get<std::string>().c_str());
@@ -82,13 +82,13 @@ SiaApiError CSiaApi::_CSiaWallet::Restore(const String& seed)
 SiaApiError CSiaApi::_CSiaWallet::Lock()
 {
 	SiaApiError error = GetCreated() ? (GetLocked() ? SiaApiError::WalletLocked : SiaApiError::Success) : SiaApiError::WalletNotCreated;
-	if (API_SUCCESS(SiaApiError, error))
+	if (ApiSuccess(error))
 	{
 		error = SiaApiError::RequestError;
 
 		json result;
 		SiaCurlError cerror = _siaCurl.Post(L"/wallet/lock", {}, result);
-		if (API_SUCCESS(SiaCurlError, cerror))
+		if (ApiSuccess(cerror))
 		{
 			Refresh();
 			error = SiaApiError::Success;
@@ -101,13 +101,13 @@ SiaApiError CSiaApi::_CSiaWallet::Lock()
 SiaApiError CSiaApi::_CSiaWallet::Unlock(const String& password)
 {
 	SiaApiError error = GetCreated() ? (GetLocked() ? SiaApiError::Success : SiaApiError::WalletUnlocked) : SiaApiError::WalletNotCreated;
-	if (API_SUCCESS(SiaApiError, error))
+	if (ApiSuccess(error))
 	{
 		error = SiaApiError::RequestError;
 
 		json result;
 		SiaCurlError cerror = _siaCurl.Post(L"/wallet/unlock", { {L"encryptionpassword", password} }, result);
-		if (API_SUCCESS(SiaCurlError, cerror))
+		if (ApiSuccess(cerror))
 		{
 			Refresh();
 			error = SiaApiError::Success;
@@ -135,7 +135,7 @@ SiaApiError CSiaApi::_CSiaWallet::GetConfirmedBalance(SiaCurrency& balance) cons
 
 	json result;
 	SiaCurlError cerror = _siaCurl.Get(L"/wallet", result);
-	if (API_SUCCESS(SiaCurlError, cerror))
+	if (ApiSuccess(cerror))
 	{
 		balance = HastingsStringToSiaCurrency(String(CA2W(result["confirmedsiacoinbalance"].get<std::string>().c_str())));
 		ret = SiaApiError::Success;
@@ -151,7 +151,7 @@ SiaApiError CSiaApi::_CSiaWallet::GetUnonfirmedBalance(SiaCurrency& balance) con
 
 	json result;
 	SiaCurlError cerror = _siaCurl.Get(L"/wallet", result);
-	if (API_SUCCESS(SiaCurlError, cerror))
+	if (ApiSuccess(cerror))
 	{
 		balance = HastingsStringToSiaCurrency(String(CA2W(result["unconfirmedincomingsiacoins"].get<std::string>().c_str())));
 		ret = SiaApiError::Success;
@@ -167,7 +167,7 @@ SiaApiError CSiaApi::_CSiaWallet::GetAddress(String& address) const
 
 	json result;
 	SiaCurlError cerror = _siaCurl.Get(L"/wallet/address", result);
-	if (API_SUCCESS(SiaCurlError, cerror))
+	if (ApiSuccess(cerror))
 	{
 		address = CA2W(result["address"].get<std::string>().c_str());
 		ret = SiaApiError::Success;

SiaDrive.Dokan.Api/SiaDokanDrive.cpp

@@ -42,7 +42,7 @@ private:
 		tempPath.resize(MAX_PATH + 1);
 		if (GetTempPath(MAX_PATH + 1, &tempPath[0]))
 		{
-			ret = API_SUCCESS(SiaApiError, _siaApi->GetRenter()->DownloadFile(siaPath, tempPath));
+			ret = ApiSuccess(_siaApi->GetRenter()->DownloadFile(siaPath, tempPath));
 			if (ret)
 			{
 
@@ -158,7 +158,7 @@ private:
 					else
 					{
 						bool exists;
-						if (API_SUCCESS(SiaApiError, _siaApi->GetRenter()->FileExists(siaPath, exists)))
+						if (ApiSuccess(_siaApi->GetRenter()->FileExists(siaPath, exists)))
 						{
 							// Operations on existing files that are requested to be truncated, overwritten or re-created
 							//	will first be deleted and then replaced if, after the file operation is done, the resulting file
@@ -227,7 +227,7 @@ private:
 									//	If file isn't cached, delete from Sia only
 									if (!PathFileExists(cacheFilePath.c_str()) || ::DeleteFile(cacheFilePath.c_str()))
 									{
-										if (!API_SUCCESS(SiaApiError, _siaApi->GetRenter()->DeleteFile(siaPath)))
+										if (!ApiSuccess(_siaApi->GetRenter()->DeleteFile(siaPath)))
 										{
 											ret = STATUS_INVALID_SERVER_STATE;
 										}

SiaDrive/SiaDriveDlg.cpp

@@ -319,7 +319,7 @@ HRESULT CSiaDriveDlg::OnButtonUnlockWallet(IHTMLElement* /*pElement*/)
 	SetBodyEnabled(false);
 	String pwd = GetWalletUnlockPassword();
 	std::thread th([this, pwd]() {
-		if (API_SUCCESS(SiaApiError, _siaApi.GetWallet()->Unlock(pwd)))
+		if (ApiSuccess(_siaApi.GetWallet()->Unlock(pwd)))
 		{
 			QueueUiAction([this]() {
 				SetWalletUnlockPassword(L"");
@@ -501,10 +501,10 @@ bool CSiaDriveDlg::UpdateSiaInfo()
 		if (_siaApi.GetWallet()->Refresh())
 		{
 			SiaCurrency confirmed;
-			if (API_SUCCESS(SiaApiError, _siaApi.GetWallet()->GetConfirmedBalance(confirmed)))
+			if (ApiSuccess(_siaApi.GetWallet()->GetConfirmedBalance(confirmed)))
 			{
 				SiaCurrency unconfirmed;
-				if (API_SUCCESS(SiaApiError, _siaApi.GetWallet()->GetUnonfirmedBalance(unconfirmed)))
+				if (ApiSuccess(_siaApi.GetWallet()->GetUnonfirmedBalance(unconfirmed)))
 				{
 					SiaCurrency total = confirmed + unconfirmed;
 	
@@ -708,7 +708,7 @@ HRESULT CSiaDriveDlg::OnButtonCreateWallet(IHTMLElement* pElement)
 		KillTimer(IDT_UPDATE);
 
 		String seed;
-		if (API_SUCCESS(SiaApiError, _siaApi.GetWallet()->Create(SiaSeedLanguage::English, seed)))
+		if (ApiSuccess(_siaApi.GetWallet()->Create(SiaSeedLanguage::English, seed)))
 		{
 			DisplaySeedCreated(seed);
 		}

UnitTests/SiaWalletApiTests.cpp

@@ -23,15 +23,15 @@ namespace UnitTests
 			Assert::IsTrue(wallet->GetLocked());
 
 			String seed;
-			Assert::IsTrue(API_SUCCESS(SiaApiError, wallet->Create(SiaSeedLanguage::English, seed)));
+			Assert::IsTrue(ApiSuccess(wallet->Create(SiaSeedLanguage::English, seed)));
 			Assert::IsTrue(wallet->GetCreated());
 			Assert::IsTrue(wallet->GetLocked());
 
-			Assert::IsTrue(API_SUCCESS(SiaApiError, wallet->Unlock(seed)));
+			Assert::IsTrue(ApiSuccess(wallet->Unlock(seed)));
 			Assert::IsTrue(wallet->GetCreated());
 			Assert::IsFalse(wallet->GetLocked());
 
-			Assert::IsTrue(API_SUCCESS(SiaApiError, wallet->Lock( )));
+			Assert::IsTrue(ApiSuccess(wallet->Lock( )));
 			Assert::IsTrue(wallet->GetCreated());
 			Assert::IsTrue(wallet->GetLocked());
 		}