#!/bin/bash

# Function to display current directory and files
display_files_and_head() {
  local files
  files=$(ls -1 | pr -o 2 -l 1 -w $(tput cols))
  echo "Current Directory: $(pwd)"
  echo "Files:"
  echo "$files" | cut -f1
  echo "Selected file:"
  local file=$1
  if [[ -f "$file" ]]; then
    head -n 5 $file
  else
    echo "Invalid file"
  fi
}

# Main loop
while true; do
    # Clear screen
    clear

    # Display current time
    date +"%T"

    # Display files and head of selected file
    display_files_and_head
    read -p "Enter a file to view head: " file
    display_files_and_head $file

    # Handle user input
    read -p "Enter command (up, left, right, grep, copy, move, rename, nano, shell): " cmd
    case $cmd in
        "up")
            cd ..
            ;;
        "left")
            cd ..
            ;;
        "right")
            read -p "Enter directory to go into: " dir
            cd $dir
            ;;
        "grep")
            read -p "Enter search string: " search
            grep -r $search .
            ;;
        "copy")
            read -p "Enter file to copy: " file
            read -p "Enter destination: " dest
            cp $file $dest
            ;;
        "move")
            read -p "Enter file to move: " file
            read -p "Enter destination: " dest
            mv $file $dest
            ;;
        "rename")
            read -p "Enter file to rename: " file
            read -p "Enter new name: " newname
            mv $file $newname
            ;;
        "nano")
            read -p "Enter file to edit: " file
            nano $file
            ;;
        "shell")
            read -p "Enter command: " command
            eval $command
            ;;
    esac
done