//	mediaClass implementation

#include "mediaClass.h"

//	MUTATORS:
bool mediaClass::readAll( istream& inStream )
{
	//	initialize fields to blank:
	authorData = availData = ownerData = titleData = typeData = "";
	priceData = -1;

	string label;	//	stores the field flag
	getline( inStream, label );	//	initial field flag read

	while( inStream && label != "@@" )	//	reads until end of item data flag or eof
	{
		if( label[0] == '@' && inStream.peek() != '@' )	//	checks that the field is not empty
			if( label == "@Item:" )
				title( inStream );
			else if( label == "@Media Type:" )
				type( inStream );
			else if( label == "@by:" )
				author( inStream );
			else if( label == "@Owner:" )
				owner( inStream );
			else if( label == "@Price:" )
				price( inStream );
			else if( label == "@Availability:" )
				avail( inStream );
			else
				cout << "error reading item\n";
		
		getline( inStream, label );	//	read next label
	}

	if( ownerData == "" )	//	make sure email address has been read (every student must have an email address, all other fields are optional)
	{
		flagData = false;
		authorData = availData = ownerData = titleData = typeData = "UNINITIALIZED\n";
		priceData = -1;
		return false;
	}

	flagData = true;	//	flag this as a valid student
	return true;
}
bool mediaClass::type( istream& inStream )
{
	getline( inStream, typeData );
	return inStream && typeData.length() > 0;
}
bool mediaClass::avail( istream& inStream )
{
	getline( inStream, availData );
	return inStream && availData.length() > 0;
}
bool mediaClass::title( istream& inStream )
{
	getline( inStream, titleData );
	return inStream && titleData.length() > 0;
}
bool mediaClass::author( istream& inStream )
{
	getline( inStream, authorData );
	return inStream && authorData.length() > 0;
}
bool mediaClass::owner( istream& inStream )
{
	assert( ownerData == "" );	//	make sure there are not two email addresses for one student

	getline( inStream, ownerData );
	return inStream && ownerData.length() > 0;
}
bool mediaClass::price( istream& inStream )
{
	char tempChar;	//	next char being read
	int tempInt;	//	next in being read

	inStream >> tempChar;	// read first char

	if( tempChar == '$' )	//	first char must be $
		if( inStream >> priceData )	//	read dollars
		{
			inStream >> tempChar;
			
			if( tempChar == '.' )	// next char must be .
				if( inStream >> tempInt )	//	read cents
					priceData = priceData * 100 + tempInt;
				else
				{
					priceData = -1;
					return false;
				}
			else
				return false;
		}
		else
			return false;
	else
		return false;

	return true;
}
//	ACCESSORS:
bool mediaClass::operator ==( const mediaClass& ITEM ) const
{
	return titleData == ITEM.titleData && authorData == ITEM.authorData;
}

bool mediaClass::ownedBy( const string MATCH ) const
{
	return MATCH == ownerData;
}

string mediaClass::print( const bool PRINT_OWNER ) const
{
	ostringstream tempOStream;

	if( PRINT_OWNER )	//	prints item info including owner field
	{
		if( titleData != "" )
			tempOStream << title();
		if( typeData != "" )
			tempOStream << type();
		if( authorData != "" )
			tempOStream << author();
		if( ownerData != "" )
			tempOStream << owner();
		if( priceData != -1 )
			tempOStream << price();
		if( availData != "" )
			tempOStream << avail();
	}
	else	//	prints item info without owner field
	{
		if( titleData != "" )
			tempOStream << title();
		if( typeData != "" )
			tempOStream << type();
		if( authorData != "" )
			tempOStream << author();
		if( priceData != -1 )
			tempOStream << price();
		if( availData != "" )
			tempOStream << avail();
	}

	return tempOStream.str() + '\n';
}

string mediaClass::price() const
{
	ostringstream tempOStream;

	tempOStream << '$' << priceData / 100;	//	print dollars

	tempOStream << setfill('0') << '.' << setw(2) << priceData % 100;	// print cents

	return "Price:\n\t" + tempOStream.str() + '\n';	//	return formatted price
}
//	CONSTRUCTORS:
mediaClass::mediaClass()
{
	flagData = false;	//	flag as unitialized
	//	set values to blank flags:
	authorData = availData = ownerData = titleData = typeData = "";
	priceData = -1;
}
mediaClass::mediaClass( istream& inStream )
{
	readAll( inStream );
}
//	EXTERNAL OPERATORS:
bool operator >>( istream& inFile, mediaClass& item )
{
	istringstream tempIStream( copyCommand( inFile ) );	//	gets a copy of the first item's data from the stream to be read
	return( item.readAll( tempIStream ) );	//	returns the value of readAll()
}
bool operator <<( ostream& outFile, const mediaClass& item )
{
	outFile << item.print( true );

	return true;
}