////////////////////////////////////////////////////////////////
//
//	emailClassTester.cpp
//
//	A main program for testing the EmailMessage class.
//
//	REVISION HISTORY
//		3/2/01 (Jeff Ondich) Written for CS117 class demo and
//				a midterm exam.
//
////////////////////////////////////////////////////////////////

#include <fstream>
#include <string>
#include "emailClass.h"


//////////////////////////////////////////////////////
// Function prototypes.
//////////////////////////////////////////////////////

void OpenEmailFile( ifstream& inputFile, string fileName );


//////////////////////////////////////////////////////
// main program
//////////////////////////////////////////////////////

int main()
{
	// Get the e-mail file's name from the user.

	string fileName;
	cout << "Please type the name of your e-mail file: ";
	cin >> fileName;

	ifstream inputFile;
	OpenEmailFile( inputFile, fileName );

	EmailMessage	messages[100];
	int				nMessages = 0;
	string			line;
	string			returnPath, date, subject, message;

	while( getline( inputFile, line ) )
	{
		if( line.find( "From " ) == 0 )
		{
			messages[nMessages].SetData( returnPath, subject, date, message );

			nMessages++;
			returnPath = "";
			date = "";
			subject = "";
			message = "";
		}

		if( line.find( "Return-Path: " ) == 0  &&  returnPath == "" )
			returnPath = line;

		if( line.find( "Date: " ) == 0  &&  date == "" )
			date = line;

		if( line.find( "Subject: " ) == 0  &&  subject == "" )
			subject = line;

		message += line + '\n';
	}

	inputFile.close();


	for( int i=0; i < nMessages; i++ )
	{
		cout << messages[i].GetSender() << endl;
		cout << messages[i].GetSubject() << endl << endl;
	}

	return( 0 );
}


//////////////////////////////////////////////////////
// Opens an input stream corresponding to
// the file of the given name.  If the file can't
// be opened, we give the user a descriptive
// error message and quit the program.
//////////////////////////////////////////////////////

void OpenEmailFile( ifstream& inputFile, string fileName )
{
	inputFile.open( fileName.c_str() );
	if( !(inputFile.is_open()) )
	{
		cout << "An error occurred during the attempt to open "
			<< fileName << "." << endl
			<< "Perhaps the file does not exist." << endl;

		exit( 1 );
	}
}