#!/bin/sh

KEY_URL="https://pub.hruby.se/"
SSH_DIR="$HOME/.ssh"
AUTHORIZED_KEYS="$SSH_DIR/authorized_keys"
TMP_KEY="/tmp/lh_pub.pub"

mkdir -p "$SSH_DIR"
chmod 700 "$SSH_DIR"

# Fetch the public key
curl -fsSL "$KEY_URL" -o "$TMP_KEY"
if [ $? -ne 0 ]; then
  echo "Failed to fetch public key from $KEY_URL"
  exit 1
fi

# Check if the key is already in authorized_keys
if [ -f "$AUTHORIZED_KEYS" ]; then
  grep -F -x -f "$TMP_KEY" "$AUTHORIZED_KEYS" >/dev/null 2>&1
  if [ $? -eq 0 ]; then
    echo "Key already present in authorized_keys"
    rm -f "$TMP_KEY"
    exit 0
  fi
fi

# Append the key
cat "$TMP_KEY" >> "$AUTHORIZED_KEYS"
rm -f "$TMP_KEY"
chmod 600 "$AUTHORIZED_KEYS"
echo "SSH key added to authorized_keys"