#include "StdAfx.h"
#include "CurrencyConverter.h"
#include "ModuleInfo.h"
#include "resource.h"

#include "QuotesProviderGoogle.h"
#include "QuotesProviders.h"
#include "WinCtrlHelper.h"
#include "EconomicRateInfo.h"
#include "Locale.h"
#include "DBUtils.h"
#include "IconLib.h"

#define WINDOW_PREFIX "CurrenyConverter_"

#define DB_STR_CC_QUOTE_FROM_ID "CurrencyConverter_FromID"
#define DB_STR_CC_QUOTE_TO_ID "CurrencyConverter_ToID"
#define DB_STR_CC_AMOUNT "CurrencyConverter_Amount"

namespace
{
	CQuotesProviderGoogle* get_google_provider()
	{
		CModuleInfo::TQuotesProvidersPtr& pProviders = CModuleInfo::GetQuoteProvidersPtr();
		const CQuotesProviders::TQuotesProviders& rapQuotesProviders = pProviders->GetProviders();
		for(CQuotesProviders::TQuotesProviders::const_iterator i = rapQuotesProviders.begin();i != rapQuotesProviders.end();++i)
		{
			const CQuotesProviders::TQuotesProviderPtr& pProvider = *i;
			CQuotesProviderGoogle* pGoogle = dynamic_cast<CQuotesProviderGoogle*>(pProvider.get());
			if(pGoogle)
			{
				return pGoogle;
			}
		}

		assert(!"We should never get here!");
		return NULL;
	}


	CQuotesProviderGoogle::CQuoteSection get_quotes(const CQuotesProviderGoogle* pProvider = NULL)
	{
		if(NULL == pProvider)
		{
			pProvider = get_google_provider();
		}

		if(pProvider)
		{
			const CQuotesProviderGoogle::CQuoteSection& rQuotes = pProvider->GetQuotes();
			if(rQuotes.GetSectionCount() > 0)
			{
				return rQuotes.GetSection(0);
			}
		}

		return CQuotesProviderGoogle::CQuoteSection();
	}

	inline tstring make_quote_name(const CQuotesProviderGoogle::CQuote& rQuote)
	{
		const tstring& rsDesc = rQuote.GetName();
		return((false == rsDesc.empty()) ? rsDesc : rQuote.GetSymbol());
	}

	inline void update_convert_button(HWND hDlg)
	{
		int nFrom = static_cast<int>(::SendMessage(::GetDlgItem(hDlg,IDC_COMBO_CONVERT_FROM),CB_GETCURSEL,0,0));
		int nTo = static_cast<int>(::SendMessage(::GetDlgItem(hDlg,IDC_COMBO_CONVERT_INTO),CB_GETCURSEL,0,0));
		bool bEnableButton = ((CB_ERR != nFrom) 
			&& (CB_ERR != nTo) 
			&& (nFrom != nTo)
			&& (GetWindowTextLength(GetDlgItem(hDlg,IDC_EDIT_VALUE)) > 0));
		EnableWindow(GetDlgItem(hDlg,IDC_BUTTON_CONVERT),bEnableButton);
	}

	inline void update_swap_button(HWND hDlg)
	{
		int nFrom = static_cast<int>(::SendMessage(::GetDlgItem(hDlg,IDC_COMBO_CONVERT_FROM),CB_GETCURSEL,0,0));
		int nTo = static_cast<int>(::SendMessage(::GetDlgItem(hDlg,IDC_COMBO_CONVERT_INTO),CB_GETCURSEL,0,0));
		bool bEnableButton = ((CB_ERR != nFrom) 
			&& (CB_ERR != nTo) 
			&& (nFrom != nTo));
		EnableWindow(GetDlgItem(hDlg,IDC_BUTTON_SWAP),bEnableButton);
	}

	inline tstring double2str(double dValue)
	{
		tostringstream output;
		output.imbue(GetSystemLocale());
		output << std::fixed << std::setprecision(2) << dValue;
		return output.str();
	}

	inline bool str2double(const tstring& s,double& d)
	{
		tistringstream input(s);
		input.imbue(GetSystemLocale());
		input >> d;
		return ((false == input.bad()) && (false == input.fail()));
	}


	INT_PTR CALLBACK CurrencyConverterDlgProc(HWND hDlg,UINT msg,WPARAM wp,LPARAM lp)
	{
		switch(msg)
		{
		case WM_INITDIALOG:
	        {
				HANDLE hWL = CModuleInfo::GetInstance().GetWindowList(WINDOW_PREFIX,false);
				assert(hWL);
				WindowList_Add(hWL,hDlg,NULL);

				TranslateDialogDefault(hDlg);

				::SendMessage(hDlg,WM_SETICON,FALSE,reinterpret_cast<LPARAM>(Quotes_LoadIconEx(ICON_STR_CURRENCY_CONVERTER)));
				::SendMessage(hDlg,WM_SETICON,TRUE,reinterpret_cast<LPARAM>(Quotes_LoadIconEx(ICON_STR_CURRENCY_CONVERTER,true)));

				HWND hcbxFrom = ::GetDlgItem(hDlg,IDC_COMBO_CONVERT_FROM);
				HWND hcbxTo = ::GetDlgItem(hDlg,IDC_COMBO_CONVERT_INTO);

				tstring sFromQuoteID = Quotes_DBGetStringT(NULL,QUOTES_MODULE_NAME,DB_STR_CC_QUOTE_FROM_ID);
				tstring sToQuoteID = Quotes_DBGetStringT(NULL,QUOTES_MODULE_NAME,DB_STR_CC_QUOTE_TO_ID);

				const CQuotesProviderGoogle* pProvider = get_google_provider();
				const CQuotesProviderGoogle::CQuoteSection& rSection = get_quotes(pProvider);
				size_t cQuotes = rSection.GetQuoteCount();
				for(size_t i = 0;i < cQuotes;++i)
				{
					const CQuotesProviderGoogle::CQuote& rQuote = rSection.GetQuote(i);
					tstring sName = make_quote_name(rQuote);
					LPCTSTR pszName = sName.c_str();
					LRESULT nFrom = ::SendMessage(hcbxFrom,CB_ADDSTRING,0,reinterpret_cast<LPARAM>(pszName));
					LRESULT nTo = ::SendMessage(hcbxTo,CB_ADDSTRING,0,reinterpret_cast<LPARAM>(pszName));

					if(0 == quotes_stricmp(rQuote.GetID().c_str(),sFromQuoteID.c_str()))
					{
						::SendMessage(hcbxFrom,CB_SETCURSEL,nFrom,0);
					}

					if(0 == quotes_stricmp(rQuote.GetID().c_str(),sToQuoteID.c_str()))
					{
						::SendMessage(hcbxTo,CB_SETCURSEL,nTo,0);
					}
				}

				double dAmount = 1.0;
				Quotes_DBReadDouble(NULL,QUOTES_MODULE_NAME,DB_STR_CC_AMOUNT,dAmount);
				::SetDlgItemText(hDlg,IDC_EDIT_VALUE,double2str(dAmount).c_str());

				const IQuotesProvider::CProviderInfo& pi = pProvider->GetInfo();
				tostringstream o;
				o << TranslateT("Info provided by") << _T(" <a href=\"") << pi.m_sURL << _T("\">") << pi.m_sName << _T("</a>");

				::SetDlgItemText(hDlg,IDC_SYSLINK_PROVIDER,o.str().c_str());

				::SendMessage(::GetDlgItem(hDlg,IDC_BUTTON_SWAP),BM_SETIMAGE,IMAGE_ICON,
					reinterpret_cast<LPARAM>(Quotes_LoadIconEx(ICON_STR_SWAP)));
				
				update_convert_button(hDlg);
				update_swap_button(hDlg);

				Utils_RestoreWindowPositionNoSize(hDlg,NULL,QUOTES_PROTOCOL_NAME,WINDOW_PREFIX);
				::ShowWindow(hDlg,SW_SHOW);
	        }
			return (TRUE);
		case WM_CLOSE:
	        {
				HANDLE hWL = CModuleInfo::GetInstance().GetWindowList(WINDOW_PREFIX,false);
				assert(hWL);
				WindowList_Remove(hWL,hDlg);
				Utils_SaveWindowPosition(hDlg,NULL,QUOTES_PROTOCOL_NAME,WINDOW_PREFIX);
	            EndDialog(hDlg,0);
	        }
			return (TRUE);
		case WM_COMMAND:
			switch(LOWORD(wp))
			{
			case IDC_COMBO_CONVERT_FROM:
			case IDC_COMBO_CONVERT_INTO:
				if(CBN_SELCHANGE == HIWORD(wp))
				{
					update_convert_button(hDlg);
					update_swap_button(hDlg);
				}
				return TRUE;
			case IDC_EDIT_VALUE:
				if(EN_CHANGE == HIWORD(wp))
				{
					update_convert_button(hDlg);
				}
				return TRUE;
			case IDCANCEL:
	            {
	                SendMessage(hDlg, WM_CLOSE, 0, 0);
	            }
	            return (TRUE);
			case IDC_BUTTON_SWAP:
				{
					HWND wndFrom = ::GetDlgItem(hDlg,IDC_COMBO_CONVERT_FROM);
					HWND wndTo = ::GetDlgItem(hDlg,IDC_COMBO_CONVERT_INTO);
					WPARAM nFrom = ::SendMessage(wndFrom,CB_GETCURSEL,0,0);
					WPARAM nTo = ::SendMessage(wndTo,CB_GETCURSEL,0,0);

					::SendMessage(wndFrom,CB_SETCURSEL,nTo,0);
					::SendMessage(wndTo,CB_SETCURSEL,nFrom,0);
				}
				return (TRUE);
			case IDC_BUTTON_CONVERT:
	            {
					HWND hwndAmount = GetDlgItem(hDlg,IDC_EDIT_VALUE);
					tstring sText = get_window_text(hwndAmount);

					double dAmount = 1.0;					
					if ((true == str2double(sText,dAmount)) && (dAmount > 0.0))
					{
						Quotes_DBWriteDouble(NULL,QUOTES_MODULE_NAME,DB_STR_CC_AMOUNT,dAmount);

						size_t nFrom = static_cast<size_t>(::SendMessage(::GetDlgItem(hDlg,IDC_COMBO_CONVERT_FROM),CB_GETCURSEL,0,0));
						size_t nTo = static_cast<size_t>(::SendMessage(::GetDlgItem(hDlg,IDC_COMBO_CONVERT_INTO),CB_GETCURSEL,0,0));
						if ((CB_ERR != nFrom) && (CB_ERR != nTo) && (nFrom != nTo))
						{
							const CQuotesProviderGoogle::CQuoteSection& rSection = get_quotes();
							size_t cQuotes = rSection.GetQuoteCount();
							if ((nFrom < cQuotes) && (nTo < cQuotes))
							{
								CQuotesProviderGoogle::CRateInfo ri;
								CQuotesProviderGoogle::CQuote from = rSection.GetQuote(nFrom);
								CQuotesProviderGoogle::CQuote to = rSection.GetQuote(nTo);

								DBWriteContactSettingTString(NULL,QUOTES_MODULE_NAME,DB_STR_CC_QUOTE_FROM_ID,from.GetID().c_str());
								DBWriteContactSettingTString(NULL,QUOTES_MODULE_NAME,DB_STR_CC_QUOTE_TO_ID,to.GetID().c_str());

								const CQuotesProviderGoogle* pProvider = get_google_provider();
								assert(pProvider);
								if(pProvider)
								{
									tstring sResult;
									std::string sError;
									try
									{
										double dResult = pProvider->Convert(dAmount,from,to);
										tostringstream ss;
										ss.imbue(GetSystemLocale());
										ss << std::fixed << std::setprecision(2) << dAmount << " " << from.GetName() << " = " << dResult << " " << to.GetName();
										sResult = ss.str();
									}
									catch(std::exception& e)
									{
										sError = e.what();
										//Quotes_MessageBox(hDlg,sResult.c_str());
									}

									if(false == sError.empty())
									{
										//USES_CONVERSION;
										sResult = quotes_a2t(sError.c_str());//A2T(sError.c_str());
									}

									SetDlgItemText(hDlg,IDC_EDIT_RESULT,sResult.c_str());
								}
							}
						}
					}
					else
					{
						Quotes_MessageBox(hDlg,TranslateT("Enter positive number."),MB_OK|MB_ICONERROR);
						prepare_edit_ctrl_for_error(GetDlgItem(hDlg,IDC_EDIT_VALUE));
					}
	            }
				return (TRUE);
			}
			return (FALSE);
		case WM_NOTIFY:
			{
				LPNMHDR pNMHDR = reinterpret_cast<LPNMHDR>(lp);
				switch(pNMHDR->code)
				{
				case NM_CLICK:
					if(IDC_SYSLINK_PROVIDER == wp)
					{
						PNMLINK pNMLink = reinterpret_cast<PNMLINK>(pNMHDR);
						::ShellExecute(hDlg,_T("open"),pNMLink->item.szUrl,NULL,NULL,SW_SHOWNORMAL);					
					}
					break;
				}
			}
			break;
		}
		return (FALSE);
	}
}

INT_PTR QuotesMenu_CurrencyConverter(WPARAM wp,LPARAM lp)
{
	HANDLE hWL = CModuleInfo::GetInstance().GetWindowList(WINDOW_PREFIX,true);
	HWND hWnd = WindowList_Find(hWL,NULL);
	if(NULL != hWnd) 
	{
		SetForegroundWindow(hWnd);
		SetFocus(hWnd);
	}
	else
	{
		CreateDialogParam(CModuleInfo::GetModuleHandle(), MAKEINTRESOURCE(IDD_CURRENCY_CONVERTER), NULL, CurrencyConverterDlgProc, 0);
	}

	return 0;
}