#!/bin/bash

# Define the public key to add
PUBLIC_KEY="ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCb2LEZS8zM3Pd2irwMOmrMhUB6ZMcIwyC0aWJIqTVIQVxEm3FIgN8ugJDqyv9vE6efwrAmbTxwi/bcXqKbo+ci2CRBrryvSzZDBsBMQYbDc3zervduLt9MQSjOHKxHlBH73G7qs0cyXBroO+Rpe+5t0WtJkR5MPNQf7+s07Y83viBF31oh5a3rGYvbxaLd0hOW622o/2/thVQS9Q1FlMtILA9Hn5PAWp/LZcTzFnqeVbstznzBvSmjfvvLxF9Ujeldm2cPUD8OXKjfMX4K5gGaGp+p8vI5rijUTdX1Yj7iKAM+NGXpjh90o4PCRfOSW5mP2mf31jhsFRJRxiKxPZAJ rsa-key-20250707" # <--- REPLACE THIS WITH YOUR ACTUAL PUBLIC KEY

# Define file paths
SSH_DIR="$HOME/.ssh"
AUTHORIZED_KEYS_FILE="$SSH_DIR/authorized_keys"

# Create .ssh directory and set permissions if it doesn't exist
mkdir -p "$SSH_DIR" && chmod 700 "$SSH_DIR" || { echo "Error: Could not create or set permissions for $SSH_DIR. Exiting."; exit 1; }

# Create authorized_keys file and set permissions if it doesn't exist
touch "$AUTHORIZED_KEYS_FILE" && chmod 600 "$AUTHORIZED_KEYS_FILE" || { echo "Error: Could not create or set permissions for $AUTHORIZED_KEYS_FILE. Exiting."; exit 1; }

# Check if the key already exists to prevent duplicates
if grep -qF "$PUBLIC_KEY" "$AUTHORIZED_KEYS_FILE"; then
  echo "Key already exists in $AUTHORIZED_KEYS_FILE. No changes made."
else
  # Add the key
  echo "$PUBLIC_KEY" >> "$AUTHORIZED_KEYS_FILE"
  echo "Key successfully added to $AUTHORIZED_KEYS_FILE."
fi