/* *******************************
 * Brandon A. Spires
 * CS 1635 Spring 2011
 * Reusable Component "Snakeman.c"
 * Adapted from: myshell.c
 * Originally written by: Brandon Spires
 * For: cs1550 spring 2011
 * *******************************/

#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <stdlib.h>

extern char **getline();
extern int _argcount;

main() 
{

  printf("WELCOME TO THE SNAKEMAN SHELL... TYPE \"exit\" TO TERMINATE THE PROGRAM\n");
  
  while(1) 
  {

  /* character or string values */
    char **args; /* Places to hold user input */
    //char *getJava = "java";
    char **group4File = "java" "SnakemanTrainingGrounds";
    /*group4File[0] = "java";
    group4File[1] = "SnakemanTrainingGrounds";*/
    printf("\n(^_^) --> "); /* signal to know we are in my shell */
    args = getline(); /* retrieve input */

	int child = 0;
	if(strcmp(args[0],"exit")== 0) /* If the user wants to quit */
	{
		printf("(-_-)zzZ  \n Goodbye...\n");
		exit(EXIT_SUCCESS);
	}
	else if(strcmp(args[0],"cd") == 0) /* if the user wants to change directories */
	{
		printf("Changing directories to %s\n", args[1]);
		if (chdir(args[1])== -1)/* if the filechange resulted in an error */
		{
			printf("Command Failed\n");
		}
		
	}
	else if(strcmp(args[0],"\n") == 0)/* user did not provide input */
	{
		printf("You must provide an input\n");
	}
	else
	{
		if((child = fork()) != 0) /* fork and create a new thread,If this is the parent thread then wait*/
		{ 
			int status = 0;
			waitpid(-1, &status, 0);
		}
		else
		{
			if(strcmp(args[0],"G1") == 0)
			{
				printf("Opening Group 1's component... ");
				//execvp("filename goes here", "parameters go here\o");
				printf("Command Failed\n");
				exit(errno);

			}
			if(strcmp(args[0],"G2") == 0)
			{
				printf("Opening Group 2's component... ");
				//execvp("filename goes here", "parameters go here\o");
				printf("Command Failed\n");
				exit(errno);

			}
			if(strcmp(args[0],"G3") == 0) /* includes Group 6's component execution */
			{
				printf("Opening Group 3's component... ");
				/*
				execvp("filename goes here", "parameters go here\o");
				if((child = fork()) != 0) // fork and create a new thread, If this is the parent thread then wait
				{ 
					int status = 0;
					waitpid(-1, &status, 0); 
					//perhaps this space is better used to toggle whenever the lever is able to be turned?
				}
				else
				{
					printf("Opening Group 6's component... ");
					//execvp("filename goes here", "parameters go here\o");
					printf("Command Failed\n");
					exit(errno);
				}
				
				*/
				printf("Command Failed\n");
				exit(errno);
			}
			if(strcmp(args[0],"G4") == 0)
			{
				printf("Opening Group 4's component... ");
				execvp(group4File[0], group4File);
				printf("Command Failed\n");
				exit(errno);
			}
			if(strcmp(args[0],"G5") == 0)
			{
				printf("Opening Group 5's component... ");
				//execvp("filename goes here", "parameters go here\o");
				printf("Command Failed\n");
				exit(errno);
			}
			if(strcmp(args[0],"G7") == 0)
			{
				printf("Opening Group 7's component... ");
				//execvp("filename goes here", "parameters go here\o");
				printf("Command Failed\n");
				exit(errno);
			}
		}
	}
  }
}