#!/usr/bin/env bash
# setup_env.sh

# set -euo pipefail

echo -e "\n* * * Setting up environmental variables to ./env.sh * * *"

# detect if we're being sourced
if [[ "${BASH_SOURCE[0]}" != "$0" ]]; then
  __SOURCED=1
else
  __SOURCED=0
fi

while true; do
  # prompt user
  read -rp "Enter hostname (if you don't use a DNS, press enter): " HOSTNAME
  read -rp "Enter node location (country code or name): " LOCATION
  read -rp "Enter your email: " EMAIL
  read -rp "Enter node public moniker (visible in the explorer and NymVPN app): " MONIKER
  read -rp "Enter node public description: " DESCRIPTION
  read -rp "Enter host SSH port (press enter for default port 22): " HOST_SSH_PORT
  HOST_SSH_PORT="${HOST_SSH_PORT:-22}"

  # show summary table
  echo -e "\nPlease confirm the values you entered:"
  echo "---------------------------------------"
  printf "%-20s %s\n" "HOSTNAME:"    "$HOSTNAME"
  printf "%-20s %s\n" "LOCATION:"    "$LOCATION"
  printf "%-20s %s\n" "EMAIL:"       "$EMAIL"
  printf "%-20s %s\n" "MONIKER:"     "$MONIKER"
  printf "%-20s %s\n" "DESCRIPTION:" "$DESCRIPTION"
  printf "%-20s %s\n" "HOST_SSH_PORT:" "$HOST_SSH_PORT"
  echo "---------------------------------------"

  read -rp "Are these correct? (y/n): " CONFIRM

  case "$CONFIRM" in
    [Yy]* ) break ;;   # confirmed, exit loop
    [Nn]* ) echo -e "\nLet's try again...\n" ;;  # loop restarts
    * ) echo "Please answer y or n." ;;
  esac
done


PUBLIC_IP=$(curl -fsS -4 https://ifconfig.me || true)
PUBLIC_IP=${PUBLIC_IP:-""}

# write env.sh
{
  [[ -n "${LATEST_BINARY:-}" ]] && echo "export LATEST_BINARY=\"https://github.com${LATEST_BINARY}\""
  echo "export HOSTNAME=\"${HOSTNAME}\""
  echo "export LOCATION=\"${LOCATION}\""
  echo "export EMAIL=\"${EMAIL}\""
  echo "export MONIKER=\"${MONIKER}\""
  echo "export DESCRIPTION=\"${DESCRIPTION}\""
  echo "export PUBLIC_IP=\"${PUBLIC_IP}\""
  echo "export HOST_SSH_PORT=\"${HOST_SSH_PORT}\""
} > env.sh

echo -e "\nVariables saved to ./env.sh"

if [[ $__SOURCED -eq 1 ]]; then
  # shellcheck disable=SC1091
  . ./env.sh
  echo "Loaded into current shell (because you sourced this script)."
else
  echo "To load them into your current shell, run:  source ./env.sh"
fi