#include "..\stdafx.h"
#include "yandex_api.h"

struct CMPluginYandex : public CMPluginBase
{
	CMPluginYandex() :
		CMPluginBase(MODULENAME "/YandexDisk", pluginInfoEx)
	{
		m_hInst = g_plugin.getInst();

		RegisterProtocol(PROTOTYPE_PROTOWITHACCS, (pfnInitProto)CYandexService::Init, (pfnUninitProto)CYandexService::UnInit);
	}
}
g_pluginYandex;

/////////////////////////////////////////////////////////////////////////////////////////

CYandexService::CYandexService(const char *protoName, const wchar_t *userName) :
	CCloudService(protoName, userName, &g_pluginYandex)
{
	m_hProtoIcon = g_plugin.getIconHandle(IDI_YADISK);
}

CYandexService* CYandexService::Init(const char *moduleName, const wchar_t *userName)
{
	CYandexService *proto = new CYandexService(moduleName, userName);
	Services.insert(proto);
	return proto;
}

int CYandexService::UnInit(CYandexService *proto)
{
	Services.remove(proto);
	delete proto;
	return 0;
}

const char* CYandexService::GetModuleName() const
{
	return "Yandex.Disk";
}

int CYandexService::GetIconId() const
{
	return IDI_YADISK;
}

bool CYandexService::IsLoggedIn()
{
	ptrA token(getStringA("TokenSecret"));
	if (!token || token[0] == 0)
		return false;
	time_t now = time(0);
	time_t expiresIn = getDword("ExpiresIn");
	return now < expiresIn;
}

void CYandexService::Login(HWND owner)
{
	ptrA token(getStringA("TokenSecret"));
	ptrA refreshToken(getStringA("RefreshToken"));
	if (token && refreshToken && refreshToken[0]) {
		YandexAPI::RefreshTokenRequest request(refreshToken);
		NLHR_PTR response(request.Send(m_hConnection));

		JSONNode root = GetJsonResponse(response);

		JSONNode node = root.at("access_token");
		setString("TokenSecret", node.as_string().c_str());

		node = root.at("expires_in");
		time_t expiresIn = time(0) + node.as_int();
		setDword("ExpiresIn", expiresIn);

		node = root.at("refresh_token");
		setString("RefreshToken", node.as_string().c_str());

		return;
	}

	COAuthDlg dlg(this, YANDEX_AUTH, (MyThreadFunc)&CYandexService::RequestAccessTokenThread);
	dlg.SetParent(owner);
	dlg.DoModal();
}

void CYandexService::Logout()
{
	ForkThread((MyThreadFunc)&CYandexService::RevokeAccessTokenThread);
}

void CYandexService::RequestAccessTokenThread(void *param)
{
	HWND hwndDlg = (HWND)param;

	if (IsLoggedIn())
		Logout();

	char requestToken[128];
	GetDlgItemTextA(hwndDlg, IDC_OAUTH_CODE, requestToken, _countof(requestToken));

	YandexAPI::GetAccessTokenRequest request(requestToken);
	NLHR_PTR response(request.Send(m_hConnection));

	if (response == nullptr || response->resultCode != HTTP_CODE_OK) {
		const char *error = response->dataLength
			? response->pData
			: HttpStatusToError(response->resultCode);

		Netlib_Logf(m_hConnection, "%s: %s", GetAccountName(), error);
		ShowNotification(TranslateT("Server does not respond"), MB_ICONERROR);
		EndDialog(hwndDlg, 0);
		return;
	}

	JSONNode root = JSONNode::parse(response->pData);
	if (root.empty()) {
		Netlib_Logf(m_hConnection, "%s: %s", GetAccountName(), HttpStatusToError(response->resultCode));
		ShowNotification(TranslateT("Server does not respond"), MB_ICONERROR);
		EndDialog(hwndDlg, 0);
		return;
	}

	JSONNode node = root.at("error_description");
	if (!node.isnull()) {
		CMStringW error_description = node.as_mstring();
		Netlib_Logf(m_hConnection, "%s: %s", GetAccountName(), HttpStatusToError(response->resultCode));
		ShowNotification(error_description, MB_ICONERROR);
		EndDialog(hwndDlg, 0);
		return;
	}

	node = root.at("access_token");
	setString("TokenSecret", node.as_string().c_str());

	node = root.at("expires_in");
	time_t expiresIn = time(0) + node.as_int();
	setDword("ExpiresIn", expiresIn);

	node = root.at("refresh_token");
	setString("RefreshToken", node.as_string().c_str());

	SetDlgItemTextA(hwndDlg, IDC_OAUTH_CODE, "");

	EndDialog(hwndDlg, 1);
}

void CYandexService::RevokeAccessTokenThread(void*)
{
	ptrA token(db_get_sa(0, GetAccountName(), "TokenSecret"));
	YandexAPI::RevokeAccessTokenRequest request(token);
	NLHR_PTR response(request.Send(m_hConnection));

	delSetting("ExpiresIn");
	delSetting("TokenSecret");
	delSetting("RefreshToken");
}

void CYandexService::HandleJsonError(JSONNode &node)
{
	JSONNode error = node.at("error");
	if (!error.isnull()) {
		json_string tag = error.at(".tag").as_string();
		throw Exception(tag.c_str());
	}
}

auto CYandexService::CreateUploadSession(const std::string &path)
{
	ptrA token(getStringA("TokenSecret"));
	BYTE strategy = g_plugin.getByte("ConflictStrategy", OnConflict::REPLACE);
	YandexAPI::GetUploadUrlRequest request(token, path.c_str(), (OnConflict)strategy);
	NLHR_PTR response(request.Send(m_hConnection));

	JSONNode root = GetJsonResponse(response);
	return root["href"].as_string();
}

void CYandexService::UploadFile(const std::string &uploadUri, const char *data, size_t size)
{
	YandexAPI::UploadFileRequest request(uploadUri.c_str(), data, size);
	NLHR_PTR response(request.Send(m_hConnection));

	HandleHttpError(response);

	if (response->resultCode == HTTP_CODE_CREATED)
		return;

	HttpResponseToError(response);
}

void CYandexService::UploadFileChunk(const std::string &uploadUri, const char *chunk, size_t chunkSize, uint64_t offset, uint64_t fileSize)
{
	YandexAPI::UploadFileChunkRequest request(uploadUri.c_str(), chunk, chunkSize, offset, fileSize);
	NLHR_PTR response(request.Send(m_hConnection));

	HandleHttpError(response);

	if (response->resultCode == HTTP_CODE_ACCEPTED ||
		response->resultCode == HTTP_CODE_CREATED)
		return;

	HttpResponseToError(response);
}

void CYandexService::CreateFolder(const std::string &path)
{
	ptrA token(getStringA("TokenSecret"));
	YandexAPI::CreateFolderRequest request(token, path.c_str());
	NLHR_PTR response(request.Send(m_hConnection));

	if (HTTP_CODE_SUCCESS(response->resultCode)) {
		GetJsonResponse(response);
		return;
	}

	// forder exists on server
	if (response->resultCode == HTTP_CODE_CONFLICT) {
		return;
	}

	HttpResponseToError(response);
}

auto CYandexService::CreateSharedLink(const std::string &path)
{
	ptrA token(getStringA("TokenSecret"));
	YandexAPI::PublishRequest publishRequest(token, path.c_str());
	NLHR_PTR response(publishRequest.Send(m_hConnection));

	GetJsonResponse(response);

	YandexAPI::GetResourcesRequest resourcesRequest(token, path.c_str());
	response = resourcesRequest.Send(m_hConnection);

	JSONNode root = GetJsonResponse(response);
	return root["public_url"].as_string();
}

void CYandexService::Upload(FileTransferParam *ftp)
{
	auto serverDictionary = ftp->GetServerDirectory();
	std::string serverFolder = serverDictionary ? T2Utf(serverDictionary) : "";
	if (!serverFolder.empty()) {
		auto path = PreparePath(serverFolder);
		CreateFolder(path);
		auto link = CreateSharedLink(path);
		ftp->AddSharedLink(link.c_str());
	}

	ftp->FirstFile();
	do
	{
		std::string fileName = T2Utf(ftp->GetCurrentRelativeFilePath());
		uint64_t fileSize = ftp->GetCurrentFileSize();

		size_t chunkSize = ftp->GetCurrentFileChunkSize();
		mir_ptr<char> chunk((char*)mir_calloc(chunkSize));

		std::string path;
		if (!serverFolder.empty())
			path = "/" + serverFolder + "/" + fileName;
		else
			path = PreparePath(fileName);

		auto uploadUri = CreateUploadSession(path);

		if (chunkSize == fileSize) {
			ftp->CheckCurrentFile();
			size_t size = ftp->ReadCurrentFile(chunk, chunkSize);
			UploadFile(uploadUri, chunk, size);
			ftp->Progress(size);
		}
		else {
			uint64_t offset = 0;
			double chunkCount = ceil(double(fileSize) / chunkSize);
			for (size_t i = 0; i < chunkCount; i++) {
				ftp->CheckCurrentFile();
				size_t size = ftp->ReadCurrentFile(chunk, chunkSize);
				UploadFileChunk(uploadUri, chunk, size, offset, fileSize);
				offset += size;
				ftp->Progress(size);
			}
		}

		if (!ftp->IsCurrentFileInSubDirectory()) {
			auto link = CreateSharedLink(path);
			ftp->AddSharedLink(link.c_str());
		}
	} while (ftp->NextFile());
}