#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bst.h"

BST_EL	*tree = NULL;

void	read_file( char *s )
{
	FILE	*fp;
	char	tmp[80];
	BST_EL	*ptr;
	BST_EL	new_el;

	fp = fopen( s, "r" );
	if( fp == NULL )
	{
		printf( "Impossibile aprire %s\n", s );
		exit( 1 );
	}

	while( fscanf( fp, "%s", tmp ) != EOF )
	{
		ptr = search( tree, tmp );

		if( ptr == NULL )
		{
			printf( "==> %s\n", tmp );

			new_el.word = tmp;
			new_el.freq = 1;

			insert( &tree, &new_el );
		}
		else
		{
			printf( "Aggiorno %s\n", tmp );
			ptr->freq++;
		}
	}
	fclose( fp );
}

void	print_freq( void )
{
	printf( "VISITA IN-ORDER\n" );
	visit_in_order( tree );

	printf( "VISITA PRE-ORDER\n" );
	visit_pre_order( tree );

	printf( "VISITA POST-ORDER\n" );
	visit_post_order( tree );
}

int	main( int argc, char **argv )
{
	if( argc < 2 )
	{
		printf( "Uso: frequenze nomefile\n" );
		exit( 1 );
	}

	read_file( argv[1] );
	print_freq();
	dispose( &tree );

	return( 0 );
}