#!/bin/bash

echo "🔐 SSH Keypair Setup 🚀"

echo "Enter your email: "
read email
echo "Enter your host name: "
read hostname
echo "Enter your user name (default git): "
read username
echo "Enter your key type (rsa, ed25519): "
read keytype
echo "Enter your key size (default 4096): "
read keysize
echo "Enter your key comment: "
read keycomment
echo "Enter your key passphrase (default empty): "
read keypassphrase
echo "Enter your key file name (default id_rsa): "
read keyfilename
echo "Enter your key file path (default ~/.ssh): "
read keyfilepath
echo "Enter your config file path (default ~/.ssh/config): "
read configfilepath

if [ -z "$username" ]
then
  username="git"
fi

if [ -z "$keytype" ]
then
  keytype="rsa"
fi

if [ -z "$keysize" ]
then
  keysize=4096
fi

if [ -z "$keypassphrase" ]
then
  keypassphrase=""
fi

if [ -z "$keyfilename" ]
then
  keyfilename="id_rsa"
fi

if [ -z "$keyfilepath" ]
then
  keyfilepath="~/.ssh"
fi

if [ -z "$configfilepath" ]
then
  configfilepath="~/.ssh/config"
fi

ssh-keygen -t "$keytype" -b "$keysize" -C "$keycomment" -f "$keyfilepath/$keyfilename" -N "$keypassphrase"

touch "$configfilepath"

if [ -z "$hostname" ]
then
  echo "Host *" >> "$configfilepath"
else
  echo "Host $hostname" >> "$configfilepath"
fi

echo "  AddKeysToAgent yes" >> "$configfilepath"
echo "  IdentityFile $keyfilepath/$keyfilename" >> "$configfilepath"
echo "  User $username" >> "$configfilepath"

echo "Your SSH Key Pair is created successfully! 🎉"
echo "Your SSH Key Pair is located at $keyfilepath/$keyfilename"
echo "Your SSH Config is located at $configfilepath"

echo "Your SSH Public Key is copied to your clipboard"

if [ -x "$(command -v pbcopy)" ]
then
  pbcopy < "$keyfilepath/$keyfilename.pub"
else
  cat "$keyfilepath/$keyfilename.pub"
fi

echo "Now you can add the public key to your server or services. Happy coding! 🚀"