#include <stdlib.h>		// included so we can use exit()
#include <stream.h>
#include <fstream.h>
#include <String.h>
#include "graph.h"

main(int argc, char* argv[])
{
	ifstream input_file;	// ifstream is defined in fstream.h
	Vertex newnode;
	String command;
	String node1,node2;
	int distance;
	Graph G;

	if (argc!=2)
	{
		cout << "Correct usage: " << argv[0] << " filename\n";
		exit(EXIT_FAILURE);
	}

//	attempt to open the file 
	input_file.open(argv[1]);
	if (!input_file.is_open())
	{
		cout << "Unable to open file " << argv[1] << endl;
		exit(EXIT_FAILURE);
	}


//	Read in vertices and insert into graph
	while(1)
	{
		input_file >> newnode.name;
		if (newnode.name=="**end-of-nodes**")
			break;
		input_file >> newnode.ELoc;
		input_file >> newnode.SLoc;
		input_file >> newnode.purpose;
		G.AddVertex(newnode);
	}

//	Read in edges and insert into graph
	input_file >> node1;
	while(!input_file.eof())
	{
		input_file >> node2;
		input_file >> distance;
		G.AddEdge(node1,node2,distance);	
		input_file >> node1;
	}

	input_file.close();	// we are done using input_file

	cout << "Enter Command: ";
	while (cin>>command)
	{
		if (command=="Namednode")
		{
			cin >> node1;
			G.PrintVertex(node1);
		}
		else if (command=="Numberednode")
		{
			int n;
			cin >> n;
			G.PrintVertex(n);
		}
		else if (command=="Namededges")
		{
			cin >> node1;
			G.PrintNamedEdges(node1);
		}	
		else if (command=="Numberededges")
		{
			int n;
			cin >> n;
			G.PrintNumberedEdges(n);
		}
		else if (command=="Bestpath")
		{
			cin >> node1;
			cin >> node2;
			G.FindBestPath(node1,node2);
		}
		cout << "Enter Command: ";
	}
}