#include "fileops.h"
#include <string.h>
#include <ctype.h>
#include <stdlib.h>

//CheckNumReviews
//
//This function tests the value of the Number of reviews read
//in from the category file
//
//This funciton checks to ensure that the number of reviews
//is not a negative number
//
//called by:	verifyVRS
//calls:		None
//
//Params:		integer number read from .vrs file
//
//Author:		Tim McGaughey
//
//Revisions:	None
//
//Version:		1.0
//
//

int CheckNumReviews(int negtest)
{
	if (negtest < 0)
		return 1;
	return 0;
	
}

//Fexists
//
//This function checks the existance of a file before it
//attempts to open it
//
//called by:	VerifyVRS
//				VerifyMOV
//calls:		None
//
//Params:		None
//
//Author:		N D Barnette?
//
//Revisions:	??
//
//Version:		??
//
//

int Fexists(char fname[])
{
	int failed;

	ifstream infile (fname,ios::nocreate);
	failed = infile.fail();
	infile.close();
	return (!failed);
}

//CheckStarRating
//
//This function checks the validity of the star rating
//read in from the .mov file
//
//This funciton tests the value of the star rating by ensuring
//first that it falls within the prescribed range of values, 
//then checks that it is a multiple of 0.5
//
//called by:	VerifyMOV
//calls:		None
//
//Params:		rating
//
//Author:		Glenn Rioux
//
//Revisions:	None
//
//Version:		1.0
//
//

int CheckStarRating (float rating)
{
	if ((rating >= 0.0) && (rating <= 5.0))
	{
		rating *= 2;
		
		if ( ((int)(rating * 10)) == ((int)(rating)) * 10  )
		{
			return 0;
		}
	}
	return 1;
}

//CheckExtension
//
//This function tests for the proper file extension in a 
//string of characters
//
//This funciton uses the strstr() function from the ctype.h
//standard library
//
//called by:	VerifyVRS
//				VerifyMOV
//calls:		strstr
//				strcpy
//
//Params:		None
//
//Author:		Glenn Rioux
//
//Revisions:	None
//
//Version:		2.0
//
//

Boolean CheckExtension(const char someLine[], const char somefileExtension[])
{
	char stringLine[55];
	char fileExtension[5];
	char * testPtr = NULL;


	strcpy (stringLine,someLine);
	strcpy (fileExtension, somefileExtension);
	for (int index=0;index<(abs(strlen(stringLine)));index++)
		stringLine[index]=toupper(stringLine[index]);
	for (index=0;index<(abs(strlen(fileExtension)));index++)
		fileExtension[index]=toupper(fileExtension[index]);

	if(strlen(stringLine) < 5)
		return FALSE;

	testPtr = stringLine+(abs(strlen(stringLine))-4);

	if(strstr(testPtr, fileExtension))
	{
		return TRUE;
	}
	else
	{
		return FALSE;
	}
}