// threadtest.cc
//      Simple test case for the threads assignment.
//
//      Create two threads, and have them context switch
//      back and forth between themselves by calling Thread::Yield,
//      to illustratethe inner workings of the thread system.
//
// Copyright (c) 1992-1993 The Regents of the University of California.
// All rights reserved.  See copyright.h for copyright notice and limitation
// of liability and disclaimer of warranty provisions.

#include "copyright.h"
#include "system.h"
#include "ctype.h"
#include "string.h"

//----------------------------------------------------------------------
// SimpleThread
//      Loop 5 times, yielding the CPU to another ready thread
//      each iteration.
//
//      "which" is simply a number identifying the thread, for debugging
//      purposes.
//----------------------------------------------------------------------
void InputCheck(int count);
void Shout();

void
SimpleThread(int which)
{
    int num;

    for (num = 0; num < 5; num++) {
        printf("*** thread %d looped %d times\n", which, num);
        currentThread->Yield();
    }

}


//----------------------------------------------------------------------
// ThreadTest
//      Invoke a test routine.
//----------------------------------------------------------------------

void
ThreadTest()
{
    DEBUG('t', "Entering ThreadTest");

    Thread *t = new Thread("forked thread");

    //t->Fork(SimpleThread, 1);
    //SimpleThread(0);

        t->Fork(InputCheck, 0);

        //Shout();

}

void InputCheck(int count)
{
        char input[100];

        printf("Enter input: ");
        fgets(input, sizeof(input), stdin);
        int length = strlen(input);
        length = length - 1;
        printf("Your input is: %s ", input);

        while (length == 0)
        {
                printf("Please re-enter a valid input: ");
                fgets(input, sizeof(input), stdin);
                length = strlen(input);
                length = length - 1;
                printf("Your input is: %s ", input);
        }


        bool decimal = false;
        bool number = false;
        bool negative = false;
        bool lastdec = false;

        if (input[0] == '-')
        {
                negative = true;
                count = 1;
        }

        for (count; count <= length; count++)
        {
                if(isdigit(input[count]) || input[count] == '.')
                {
                        lastdec = false;

                        if(isdigit(input[count]))
                        {
                                number = true;
                        }

                        if (input[count] == '.')
                        {
                                if (number == false)
                                {
                                        printf("Character String \n \n");
                                        return;
                                }

                                if (count == length)
                                {
                                        printf("Character String \n \n");
                                        return;
                                }

                                if (decimal == false)
                                {
                                        decimal = true;
                                        lastdec = true;
                                }
                                else
                                {
                                        printf("Character String \n \n");
                                        return;
                                }
                        }
                }

                if (isalpha(input[count]))
                {
                        printf("Character String \n \n");
                        return;
                }

                if (input[count] == ' ')
                {
                        printf("Character String \n \n");
                        return;
                }

        }

        if (decimal == false && number == true)
        {
                if (negative == false)
                {
                        printf("Positive Integer \n \n");
                        return;
                }
                else
                {
                        printf("Negative Integer \n \n");
                        return;
                }
        }

        if (decimal == true && number == true && lastdec == false)
        {
                if (negative == false)
                {
                        printf("Positive Decimal \n \n");
                        return;
                }
                else
                {
                        printf("Negative Decimal \n \n");
                        return;
                }
        }

        printf("Character String \n \n");

        return;
}


void Shout()
{
        int T;
        int S;

        printf("How many threads would you like to shout?  ");
        scanf("%d", &T);

        printf("How many times should they shout? ");
        scanf("%d", &S);

        printf("%i", T);
        printf("%i", S);
        return;
}