#include"../include/types.h"
#include"../include/string.h"
#include"../include/stdio.h"

#define CMD_LENGTH 20

void clear();

size_t pieces(char pieces[][CMD_LENGTH],char *buffer)
{
    for(size_t x=0;x<CMD_LENGTH;x++) for(size_t y=0;y<CMD_LENGTH;y++) pieces[x][y]='\0';

    size_t i=0,j=0,r=0;
    while(buffer[i]==' '&&buffer[i]!='\0') i++;
    for(;buffer[i]!='\0';i++)
    {
	if(buffer[i]==' ')
	{
	    while(buffer[i]==' '&&buffer[i]!='\0') i++;
	    j=0;
	    r++;
	    i--;
	}
	else
	{
	    pieces[r][j++]=buffer[i];
	}
    }
    return r+1;
}

void echo(size_t numberof,char parts[][CMD_LENGTH])
{
    for(size_t i=1;i<numberof;i++)
    {
	printf("%s ",parts[i]);
    }
    printf("\n");
}

void merge(char parts[][CMD_LENGTH])
{
    char *str1=parts[1];
    char *str2=parts[2];
    stringcat(str1,str2);
    printf("%s\n",str1);
}

void ls(size_t numberof,char parts[][CMD_LENGTH])
{
    printf("filesystem not implemented yet, %d,%s\n",numberof,parts[0]);
}

void number(size_t numberof,char parts[][CMD_LENGTH])
{
    if(numberof==1) printf("Please enter a number\n");
    else
    {
	printf("number times two is %d\n",2*stoi(parts[1]));
	printf("number times two is %f\n",2*stof(parts[1]));
    }
}

void tty(char *buffer)
{
    char parts[CMD_LENGTH][CMD_LENGTH];
    size_t numberof=pieces(parts,buffer);

    if(stringcmp(parts[0],"clear")) clear();
    else if(stringcmp(parts[0],"echo")) echo(numberof,parts);
    else if(stringcmp(parts[0],"merge")) merge(parts);
    else if(stringcmp(parts[0],"ls")) ls(numberof,parts);
    else if(stringcmp(parts[0],"number")) number(numberof,parts);
    else printf("command not found: %s\n",parts[0]);
}