#include <debugconsole.h>
#include <kb.h>
#include <limits.h>
#include <process.h>
#include <stddef.h>
#include <stdint.h>
#include <streams.h>
#include <string.h>
#include <terminal.h>

#define RECV_MAX (1024 * 16)

static int ce_pgid;

static void receiver(void* arg) {
  (void)arg;

  char recv[RECV_MAX];
  int n;
  for (;;) {
    n = stream_read(ce_pgid, STREAM_OUT, (void*)recv, RECV_MAX - 1);

    if (n > 0)
      terminal_print(recv, n);
    else
      sched();
  }
}

static void run_ce_interactive(void) {
  int ce_pid = exec("sys", "/ce", NULL);
  ce_pgid = get_procgroup(ce_pid);

  process_spawn(&receiver, NULL);

  for (;;) {
    int ch = kb_read_key();

    if (ch == 0)
      continue;

    stream_write(ce_pgid, STREAM_IN, &ch, 1);
  }
}

static void ce_run_init_script(void) {
  int ce_pid = exec_partial("sys", "/ce", "-script sys:/init.cmd");
  ce_pgid = get_procgroup(ce_pid);

  struct process_data* recv_pdata = process_spawn(&receiver, NULL);

  exec_partial_fini(ce_pgid);

  wait_for_pid(ce_pid);
  kill(recv_pdata->pid);
  process_data_free(recv_pdata);
}

void app_main(void) {
  debug_printf("Init process is running. Starting user shell...\n");

  ce_run_init_script();
  run_ce_interactive();
  for (;;)
    ;
}