#!/usr/bin/env bash

RED="\e[31m"
GREEN="\e[32m"
BROWN="\e[33m"
RESET="\e[0m"
ALLOWED_CHARS='^[${}![:space:]:_=()]+$'

echo -e "\e[1;34m
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣀⣀⠀⠀⣀⣄⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⡴⠦⣤⣴⡟⠉⠉⡗⠚⡇⠀⠈⡷⢤⠖⠒⠲⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⢀⣀⡇⠀⠀⢸⠀⡇⠀⠀⠇⠀⡇⠀⠀⡇⢸⠀⠀⢠⠋⡝⠉⠓⢦⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⢠⠊⠁⢣⢰⠀⠀⠈⡆⢳⠀⠀⠀⠀⡇⠀⢸⠀⡇⠀⠀⡜⢰⠃⠀⠀⡜⢦⢤⣀⠀⠀⠀⠀⠀
⠀⠀⠀⡠⢴⠻⡀⠀⠈⡎⡇⠀⠀⢃⢸⠀⠀⢸⠀⡇⠀⢸⢀⡇⠀⢠⠃⡎⠀⠀⡼⢡⠃⠀⠙⡆⠀⠀⠀⠀
⠀⠀⢸⠁⠀⢣⢱⡀⠀⢸⣸⡀⠀⢸⠈⡄⠀⢸⠀⡇⠀⠘⢸⠀⠀⡸⢰⠁⠀⢰⢡⠏⠀⠀⡜⡿⢤⡀⠀⠀
⠀⣠⠞⣷⡄⠀⢣⢣⠀⠀⢧⢇⠀⠈⡆⡇⠀⢸⠀⡇⠀⡇⡼⠀⢀⠇⡏⠀⢠⢇⠎⠀⢀⡜⡜⠁⠀⢳⠀⠀
⢸⡁⠀⠈⢻⣦⠀⢫⢧⠀⠘⡾⡄⠀⣇⢡⠀⢸⠀⡇⠀⡇⡇⠀⣸⢸⠀⢀⠏⡜⠀⢀⢎⠞⠀⢀⡴⡻⡄⠀
⣰⠻⣆⠀⠀⠻⣷⡀⢻⣇⠀⢹⢧⠀⢸⢸⠀⢸⠀⡇⢠⢿⠃⠀⡇⡇⠀⡜⡾⠀⢠⢾⠎⠀⡰⢫⠞⠀⡟⠀
⢹⣅⠙⢷⣄⠀⠙⣷⡀⢻⡄⠈⣿⡄⠘⡞⡆⢸⠀⡇⢸⢸⠀⢸⣸⠀⡸⡽⠁⢠⣯⠋⣠⣾⡖⢁⡠⠚⣿⡄
⠘⣏⠳⣄⠙⣦⡀⠘⢧⠀⢻⡄⠸⣧⠀⠇⡇⢸⠀⡇⢸⡌⠀⣇⠇⢰⣱⠁⣠⡻⢃⡴⡷⢋⡴⢋⡤⣺⠇⠀
⠀⢹⡕⢄⠑⢌⠛⢦⠈⢣⡀⢻⡀⢳⠀⢸⢳⢸⠀⡇⣎⡇⢸⠽⢠⠇⠁⣰⡿⢡⣾⢞⣴⣯⡔⣫⢴⠟⠀⠀
⠀⠀⠙⢦⣝⢦⡑⢄⠳⣌⠳⡈⢧⠈⡆⠸⣼⠸⡀⡇⡏⠁⡏⢀⠎⠀⡰⠉⡱⠋⡡⣫⣞⣽⣋⣴⠟⠀⠀⠀
⠀⠀⠀⠀⠉⠻⢿⣮⡳⣌⢦⡱⡌⣆⢸⠀⡟⡆⡇⡇⡇⢸⠁⡜⠀⡼⠁⡜⠁⣪⠞⣿⡵⠟⠉⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠙⡾⣾⣷⣵⡜⡜⡄⠇⢣⡇⡇⢳⠁⡎⠀⠀⡼⢁⠞⠠⢾⡵⠟⠉⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⣷⠈⠛⢿⣾⣾⣾⠘⠈⠁⠇⠀⠀⠁⠀⠾⠁⢀⣤⠞⢫⡗⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠘⢧⣄⠀⠙⠿⣟⠀⠀⠀⠀⠀⠀⠀⠀⢀⡴⠛⣡⡴⠋⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠙⠒⠦⠬⠷⢄⡀⠀⠀⠀⣠⠴⠟⠚⠉⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⠒⠋⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀\n"

echo -e "${BROWN}\n[*] Tillåtna tecken: $ALLOWED_CHARS\n${RESET}"

while true; do
    echo -e "${GREEN}$$@skal${BROWN}$ ${RESET}\c"
    read -rs command
    if [[ $command =~ $ALLOWED_CHARS ]]; then
        eval "$command"
    else
        echo -e "${RED}[-] Fel: Kommandot innehåller otillåtna tecken.${RESET}\n"
    fi
done