#!/usr/bin/env bash

set -e

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
NO_COLOR='\033[0m'
CLEAR_LINE='\r\033[K'

LOG_FILE=$(mktemp /tmp/<%= app_name %>-setup-XXXXXX)

# Emojis from https://graphemica.com/
main() {
  progress 1 🔎 "Checking dependencies"

  if [[ ! $(command -v ruby) ]]; then
    clear
    error "Ruby <%= RUBY_VERSION %> is required but not currently installed"
    exit 101
  fi

  if [[ ! $(ruby --version) =~ <%= RUBY_VERSION %> ]]; then
    clear
    error "Your version of ruby does not match the required version <%= RUBY_VERSION %>"
    exit 101
  fi

  if [[ ! $(command -v node) ]]; then
    clear
    error "Node is required but not currently installed"
    exit 101
  fi

  if [[ ! $(command -v yarn) ]]; then
    clear
    error "Yarn is required but not currently installed"
    exit 101
  fi

  clear
  progress 2 📦 "Installing bundler"
  gem install bundler 2> "$LOG_FILE" 1> /dev/null

  clear
  progress 3 💎 "Installing gems"
  bundle install 2> "$LOG_FILE" 1> /dev/null

  clear
  progress 4 ⏳ "Installing yarn packages"
  yarn 2> "$LOG_FILE" 1> /dev/null

  clear
  progress 5 🌐 "Checking database"
  <% db_port = { postgresql: 5432, mysql: 3306}[options[:database].to_sym] %>
  if ! is_port_open <%= db_port %>; then
    clear
    error "Database be running under port <%= db_port %> but was not found"
    info "In order to continue the setup you require a running database server"
    exit 101
  fi

  clear
  progress 6 💾 "Setting up databases"
  rails db:setup 2> "$LOG_FILE" 1> /dev/null
}

libary_exists() {
  local name=$1
  libs=$(ldconfig -p | grep -c "$name")
  [[ "$libs" -ge 1 ]]
  return $?
}

is_port_open() {
  local port=$1
  # Adapted from here: https://www.commandlinefu.com/commands/view/14651/determine-if-a-port-is-open-with-bash
  (: < /dev/tcp/127.0.0.1/"$port") &>/dev/null && return 0 || return 1
}

error() {
  local message=$1
  printf "💀 ${RED}  $message${NO_COLOR}\n"
}

warning() {
  local message=$1
  printf "⚠️  ${YELLOW}  $message ${NO_COLOR}\n"
}

info() {
  local message=$1
  printf "ℹ️    $message\n"
}

progress() {
  total=6
  step=$1
  icon=$2
  message=$3
  printf "[%s/%s] %s %s" "$step" "$total" "$icon" "$message"
}

clear() {
  printf "${CLEAR_LINE}"
}

on_exit() {
  local exit_code=$?
  clear
  if [[ "$exit_code" -eq 0 ]]; then
    on_success
  elif [[ "$exit_code" -eq 101 ]]; then
    printf "\n❌${RED}   Setup failed${NO_COLOR}\n"
  else
    on_error
  fi
}

on_error() {
  local errors
  errors=$(cat "$LOG_FILE")
  rm "$LOG_FILE"
  local colored_errors
  colored_errors=$(printf "${YELLOW}$errors${NO_COLOR}")
  echo
  printf "❌${RED}  Setup exited with errors:${NO_COLOR}\n"
  cat <<EOF
  ------
  $colored_errors
  ------
  Setup has failed with errors.
EOF
}

on_success() {
  printf "\n🎉${GREEN}  Setup finished!${NO_COLOR}\n"
  cat <<EOF
  In case you haven't already, check out the Meistertask Backend section in the
handbook for more information about this project. Happy coding!
EOF
}

trap on_exit EXIT

main "$@"