/*
 * Legal Notice
 *
 * This document and associated source code (the "Work") is a part of a
 * benchmark specification maintained by the TPC.
 *
 * The TPC reserves all right, title, and interest to the Work as provided
 * under U.S. and international laws, including without limitation all patent
 * and trademark rights therein.
 *
 * No Warranty
 *
 * 1.1 TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE INFORMATION
 *     CONTAINED HEREIN IS PROVIDED "AS IS" AND WITH ALL FAULTS, AND THE
 *     AUTHORS AND DEVELOPERS OF THE WORK HEREBY DISCLAIM ALL OTHER
 *     WARRANTIES AND CONDITIONS, EITHER EXPRESS, IMPLIED OR STATUTORY,
 *     INCLUDING, BUT NOT LIMITED TO, ANY (IF ANY) IMPLIED WARRANTIES,
 *     DUTIES OR CONDITIONS OF MERCHANTABILITY, OF FITNESS FOR A PARTICULAR
 *     PURPOSE, OF ACCURACY OR COMPLETENESS OF RESPONSES, OF RESULTS, OF
 *     WORKMANLIKE EFFORT, OF LACK OF VIRUSES, AND OF LACK OF NEGLIGENCE.
 *     ALSO, THERE IS NO WARRANTY OR CONDITION OF TITLE, QUIET ENJOYMENT,
 *     QUIET POSSESSION, CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT
 *     WITH REGARD TO THE WORK.
 * 1.2 IN NO EVENT WILL ANY AUTHOR OR DEVELOPER OF THE WORK BE LIABLE TO
 *     ANY OTHER PARTY FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO THE
 *     COST OF PROCURING SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS
 *     OF USE, LOSS OF DATA, OR ANY INCIDENTAL, CONSEQUENTIAL, DIRECT,
 *     INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER CONTRACT, TORT, WARRANTY,
 *     OR OTHERWISE, ARISING IN ANY WAY OUT OF THIS OR ANY OTHER AGREEMENT
 *     RELATING TO THE WORK, WHETHER OR NOT SUCH AUTHOR OR DEVELOPER HAD
 *     ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 * Contributors
 * - Sergey Vasilevskiy
 * - Doug Johnson
 */

/*
 *   Class representing the News Item and News XRef tables.
 */
#ifndef NEWS_ITEM_AND_XREG_TABLE_H
#define NEWS_ITEM_AND_XREG_TABLE_H

#include "EGenTables_common.h"
#include "CompanyTable.h"

#include "input/DataFileManager.h"

namespace TPCE {

const int iNewsItemsPerCompany = 2;
const int iNewsItemMaxDaysAgo = 50; // how many days ago can a news item be dated

const int iRNGSkipOneRowNews = 4 + cNI_ITEM_len; // number of RNG calls for one row

typedef struct NEWS_ITEM_AND_XREF_ROW {
	NEWS_ITEM_ROW news_item;
	NEWS_XREF_ROW news_xref;
} * PNEWS_ITEM_AND_XREF_ROW;

class CNewsItemAndXRefTable : public TableTemplate<NEWS_ITEM_AND_XREF_ROW> {
	CCompanyTable m_CompanyTable;
	const NewsDataFile_t &m_News;
	const LastNameDataFile_t &m_LastNames;
	CDateTime m_NewsBaseDate;
	int m_iNewsItemsGeneratedForCompany;
	TIdent m_iNewsCountForOneLoadUnit;

	void GenerateNewsItemHeadlineAndSummary(NEWS_ITEM_ROW &news_item) {
		int iThreshold;
		unsigned int iLen = 0;
		const char *szWord;

		while (iLen < sizeof(news_item.NI_ITEM) - 1) {
			iThreshold = m_rnd.RndIntRange(0, m_News.size() - 1);

			szWord = m_News[iThreshold].WORD_CSTR();

			while (szWord && *szWord && (iLen < sizeof(news_item.NI_ITEM) - 1)) {
				news_item.NI_ITEM[iLen++] = *szWord++; // copy one letter at a time
			}

			if (iLen < sizeof(news_item.NI_ITEM) - 1) {
				news_item.NI_ITEM[iLen++] = ' '; // add space at the end of a word
			}
		}

		news_item.NI_ITEM[iLen] = '\0'; // NULL terminate in case if the last
		                                // word was copied only partially

		// Now copy the headline and summary from the generated item.
		memcpy(news_item.NI_HEADLINE, news_item.NI_ITEM, sizeof(news_item.NI_HEADLINE) - 1);
		// news_item.NI_HEADLINE will be zero-terminated because it is
		// initialized to all 0s in TableTemplate constructor and the last
		// character is not overwritten.

		// Now copy the headline and summary from the generated item.
		memcpy(news_item.NI_SUMMARY, news_item.NI_ITEM, sizeof(news_item.NI_SUMMARY) - 1);
		// news_item.NI_SUMMARY will be zero-terminated because it is
		// initialized to all 0s in TableTemplate constructor and the last
		// character is not overwritten.
	}

	/*
	 *   Reset the state for the next load unit.
	 *
	 *   PARAMETERS:
	 *           none.
	 *
	 *   RETURNS:
	 *           none.
	 */
	void InitNextLoadUnit() {
		m_rnd.SetSeed(m_rnd.RndNthElement(RNGSeedTableDefault, (RNGSEED)m_iLastRowNumber * iRNGSkipOneRowNews));

		ClearRecord(); // this is needed for EGenTest to work
	}

public:
	CNewsItemAndXRefTable(const DataFileManager &dfm, TIdent iCustomerCount, TIdent iStartFromCustomer,
	                      INT32 iHoursOfInitialTrades)
	    : m_CompanyTable(dfm, iCustomerCount, iStartFromCustomer), m_News(dfm.NewsDataFile()),
	      m_LastNames(dfm.LastNameDataFile()), m_iNewsItemsGeneratedForCompany(0) {
		m_iLastRowNumber = iNewsItemsPerCompany * dfm.CompanyFile().CalculateStartFromCompany(iStartFromCustomer);

		//  Go to the last day of initial trades.
		//  News items will be dated up to iNewsItemMaxDaysAgo days back from
		//  that day.
		//
		m_NewsBaseDate.Set(InitialTradePopulationBaseYear, InitialTradePopulationBaseMonth,
		                   InitialTradePopulationBaseDay, InitialTradePopulationBaseHour,
		                   InitialTradePopulationBaseMinute, InitialTradePopulationBaseSecond,
		                   InitialTradePopulationBaseFraction);
		m_NewsBaseDate.Add(iHoursOfInitialTrades / HoursPerWorkDay, 0, true);

		m_iNewsCountForOneLoadUnit =
		    dfm.CompanyFile().CalculateCompanyCount(iDefaultLoadUnitSize) * iNewsItemsPerCompany;
	};

	/*
	 *   Generates all column values for the next row.
	 */
	bool GenerateNextRecord() {
		int iAddDayNo, iAddMSec, iThreshold;

		// Reset RNG at Load Unit boundary, so that all data is repeatable.
		//
		if (m_iLastRowNumber % m_iNewsCountForOneLoadUnit == 0) {
			InitNextLoadUnit();
		}

		// Generate NEWS_ITEM row
		m_row.news_item.NI_ID = m_iLastRowNumber + 1; // row number starts from 0
		GenerateNewsItemHeadlineAndSummary(m_row.news_item);
		iAddDayNo = m_rnd.RndIntRange(0, iNewsItemMaxDaysAgo);
		iAddMSec = m_rnd.RndIntRange(0, MsPerDay);
		m_row.news_item.NI_DTS = m_NewsBaseDate; // substruct from the base date
		m_row.news_item.NI_DTS.Add((-1) * iAddDayNo, (-1) * iAddMSec);

		iThreshold = m_rnd.RndIntRange(0, m_LastNames.size() - 1);
		strncpy(m_row.news_item.NI_AUTHOR, m_LastNames[iThreshold].NAME_CSTR(), sizeof(m_row.news_item.NI_AUTHOR));

		iThreshold = m_rnd.RndIntRange(0, m_LastNames.size() - 1);
		strncpy(m_row.news_item.NI_SOURCE, m_LastNames[iThreshold].NAME_CSTR(), sizeof(m_row.news_item.NI_SOURCE));

		// Generate NEWS_XREF row
		m_row.news_xref.NX_NI_ID = m_row.news_item.NI_ID;
		m_row.news_xref.NX_CO_ID = m_CompanyTable.GetCurrentCO_ID();

		++m_iNewsItemsGeneratedForCompany;

		++m_iLastRowNumber;

		if (m_iNewsItemsGeneratedForCompany >= iNewsItemsPerCompany) {
			m_bMoreRecords = m_CompanyTable.GenerateNextCO_ID();
			m_iNewsItemsGeneratedForCompany = 0;
		} else {
			m_bMoreRecords = true; // need to generate more rows for at least
			                       // the current company
		}

		return (MoreRecords());
		// return (m_iLastRowNumber < 10);
	};

	const NEWS_ITEM_ROW &GetNewsItemRow() {
		return m_row.news_item;
	}
	const NEWS_XREF_ROW &GetNewsXRefRow() {
		return m_row.news_xref;
	}
};

} // namespace TPCE

#endif // NEWS_ITEM_AND_XREG_TABLE_H