#include <stdlib.h>
#include <stdio.h>
#include "vesa.h"

extern char**environ;

// TODO quit if execve fails or child exits...

//default
char *argv1[]={"xterm","/bin/fsh",0};   

int main(int argc, char **argv)
{
    // we need a 640x336 window for a 80x24 terminal using the
    // default 7x13 pixel font +1 pixel margin so it is 8x14
    int w=640;
    int h=336;
    _gui_win(0xffffffff,w<<16|h,0);

    // basically loads font and sets a few constants
    void *fb=malloc(w*h*4);
    // 32bit mode so we have 4bytes per pixel. first one holds alpha
    
    vesa_init(w,h, fb, NULL);

    // init tty and set vesa output funcs
    void *tty=terminal_init_vesa();

    int xterm_out[2];
    pipe(xterm_out);

    int tty_fd=_open("/dev/tty");

    int pid=fork();   

    if(!pid) // child
    {
            close(xterm_out[0]);

            dup2(tty_fd,0);// stdin
            dup2(xterm_out[1],1);// stdout
            dup2(xterm_out[1],2);// stderr

             // replace process with our foolshell or whatever
            if(argc==1)_execve(argv1[1],argv1,environ); 
            execve(argv[1],argv,environ);
            
            printf("unable to execve %s",argv[1]); // never reached hopefully
            while(1);
    }
    else{

        close(xterm_out[1]);
        
        while(1)
        {
            char buf[1];
            read(xterm_out[0],buf,1); // show what foolshell writes to its stdout/stderr
            terminal_put(tty,buf[0]);
        }
    }

}