#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/wait.h>
#include <readline/history.h>
#include <readline/readline.h>

#define clear() printf("\033[H\033[J")

void init_shell() {
  clear();

  printf("\n\n\n\n******************************************");
  printf("\n\n\n\t****MY SHELL****");
  printf("\n\n\t-USE AT YOUR OWN RISK-");
  printf("\n\n\n******************************************");

  char *username = getenv("USER");
  printf("\n\nUSER is: @%s\n", username);
  sleep(1);

  clear();
}

int take_input(char *str) {
  char *buf;

  buf = readline("\n>>> ");
  if (strlen(buf) != 0) {
    add_history(buf);
    strcpy(str, buf);
    return 0;
  } else {
    return 1;
  }
}

void print_dir() {
  char cwd[1024];
  getcwd(cwd, sizeof(cwd));
  printf("\nDir: %s", cwd);
}

void execute_args(char **parsed) {
  pid_t pid = fork();

  if (pid == -1) {
    printf("\nFailed forking child..");
    return;
  } else if (pid == 0) {
    if (execvp(parsed[0], parsed) < 0) {
      printf("\nCould not execute command..");
    }
    exit(0);
  } else {
    wait(NULL);
    return;
  }
}

void open_help() {
  puts("\n***Welcome to my shell help"
       "\n-Use the shell at your own risk..."
       "\nList of commands support:"
       "\n>cd"
       "\n>ls"
       "\n>exit"
       "\n>all other general commands available in UNIX shell");
}

int own_cmd_handler(char** parsed) {
  
}

int main() {
  init_shell();
}