#!/bin/sh

# This script creates a new player in the MUD and associates them with an SSH key.
# It first prompts the user for a player name and an SSH key.
# It then checks if a user with that player name and SSH key already exists, and if so, exits.
# If the user and key combination do not already exist, it adds the key to the authorized_keys file and creates the corresponding user.

echo "Enter player name:"
read playername

echo "Enter SSH key:"
read sshkey

# check if user already exists
if id "$playername" >/dev/null 2>&1; then
    echo "Error: user $playername already exists. Please delete the existing user first and try again."
    exit 1
fi

# check if key already exists in authorized_keys file
if grep -q "$sshkey" ~/.ssh/authorized_keys; then
    echo "Error: key already exists in authorized_keys file. Please delete the existing key first and try again."
    exit 1
fi

# add key to authorized_keys file
echo "$sshkey $playername@mud" >> ~/.ssh/authorized_keys

# create user
useradd "$playername"