// SecondaryIndex.h
// CSI 2131 Asst 2b by Naim R. El-Far (naim@discover.uottawa.ca)
// CSI 2131 - Winter 2006 - Prof. L.M. Moura

// File:	SecondaryIndex.h
// Desc:	Header file for class SecondaryIndex which handles the secondary index file

#pragma once

#include <string>
#include <fstream>
#include "KeyList.h"
using namespace std;

const int SEC_INDEX_RECORD_SIZE = 24;

class SecondaryIndex {
public:
	string		indexFileName;
	fstream		indexFileStream;
	long int	numberOfRecordsInIndex;
	KeyList*	pKeyList;

	SecondaryIndex(); //Default constructor
	SecondaryIndex(string, string); //Filename constructor: given an index file name and a key list file name, use those files to store the sec index using inverted lists
	~SecondaryIndex(); //Destructor
	
	void SpaceFormatLastName(string&); //Given a last name, format it so that it fills a 20 character field
	void CapitalizeLastName(string&); //Given a last name, change its case to all upper
	void Insert(string, long int); //Given a last name and a list start RRN, insert the tuple in the index file
	void ReadByRRN(long int, string&, long int&); //Given a RRN and a string and long int to store the last name and list start values in, read the RRN 
	void WriteByRRN(long int, string, long int); //Given a RRN and a last name and list start values, store them in the index
	void ShiftIndexRecords(long int); //Given a RRN, shift all the records to the right by one starting at this record
	void Addition(string, string, long int); //Add a record to the secondary index given the last name, student number, and the byte offset
	void PrintIndex(ostream&); //Given an output stream, print the index to that stream
	long int BinarySearch(string); //Given a last name, return the list start corresponding to that last name in the sec index
};