init.sh

#!/bin/bash

# SSH PUBLIC KEY
echo -e '\033[37;44m'"\033[1mPath to your public key: \033[0m"
read -p "Enter: [$HOME/.ssh/id_rsa.pub] " PUBKEY_PATH
PUBKEY_PATH=${PUBKEY_PATH:-$HOME/.ssh/id_rsa.pub}
SSH_PUBLIC_KEY=$(cat $PUBKEY_PATH)

echo -e "\n\033[0;32mKey was read from: \033[7m $PUBKEY_PATH \033[0m\n"
echo -e "=========================\n"

# UBUNTU VERSION
echo -e '\033[37;44m'"\033[1mSelect your Ubuntu version (1 - 3): \033[0m"
echo -e "\033[1;34m1) Ubuntu 16.04 (xenial)\033[0m"
echo -e "\033[1;34m2) Ubuntu 18.04 (bionic)\033[0m"
echo -e "\033[1;34m3) Ubuntu 20.04 (focal)\033[0m"
echo -e "\033[1;34m4) Ubuntu 22.04 (jammy)\033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    1) eval "UBUNTU_VERSION=xenial"; break;;
    2) eval "UBUNTU_VERSION=bionic"; break;;
    3) eval "UBUNTU_VERSION=focal"; break;;
    4) eval "UBUNTU_VERSION=jammy"; break;;
   * ) echo "Just enter 1 - 4, please.";;
  esac;
done;

echo -e "\n\033[0;32mUbuntu version: \033[7m $UBUNTU_VERSION \033[0m\n"
echo -e "=========================\n"

# root access
echo -e '\033[37;44m'"\033[1mRoot access? (y/n): \033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    y) eval "ROOT_ACCESS=true"; break;;
    n) eval "ROOT_ACCESS=false"; break;;
   * ) echo "Just enter (y/n), please.";;
  esac;
done;

echo -e "\n\033[0;32mRoot access: \033[7m $ROOT_ACCESS \033[0m\n"
echo -e "=========================\n"

# STAGE
echo -e '\033[37;44m'"\033[1mSelect stage (1 or 2): \033[0m"
echo -e "\033[1;34m1) staging\033[0m"
echo -e "\033[1;34m2) production\033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    1) eval "STAGE=staging"; break;;
    2) eval "STAGE=production"; break;;
   * ) echo "Just enter 1 or 2, please.";;
  esac;
done;

echo -e "\n\033[0;32mStage: \033[7m $STAGE \033[0m\n"
echo -e "=========================\n"

# SERVER IP
echo -e '\033[37;44m'"\033[1mServer IP or hostname: \033[0m"
read -p "Enter: [127.0.0.1] " SERVER
SERVER=${SERVER:-127.0.0.1}

echo -e "\n\033[0;32mServer: \033[7m $SERVER \033[0m\n"
echo -e "=========================\n"

# APPLICATION NAME
echo -e '\033[37;44m'"\033[1mApplication name: \033[0m"
read -p "Enter: [myapp] " APPLICATION_NAME
APPLICATION_NAME=${APPLICATION_NAME:-myapp}

echo -e "\n\033[0;32mApplication name: \033[7m $APPLICATION_NAME \033[0m\n"
echo -e "=========================\n"

# DEPLOY USER
echo -e '\033[37;44m'"\033[1mDeploy user: \033[0m"
read -p "Enter: [deploy] " DEPLOY_USER
DEPLOY_USER=${DEPLOY_USER:-deploy}

echo -e "\n\033[0;32mDeploy user: \033[7m $DEPLOY_USER \033[0m\n"
echo -e "=========================\n"

# APP DIRECTORY
echo -e '\033[37;44m'"\033[1mApplication directory: \033[0m"
read -p "Enter: [/home/$DEPLOY_USER/applications/$APPLICATION_NAME] " APPLICATION_DIRECTORY
APPLICATION_DIRECTORY=${APPLICATION_DIRECTORY:-/home/$DEPLOY_USER/applications/$APPLICATION_NAME}

echo -e "\n\033[0;32mApplication directory: \033[7m $APPLICATION_DIRECTORY \033[0m\n"
echo -e "=========================\n"

# APP SERVER
echo -e '\033[37;44m'"\033[1mSelect your application server (1 - 2): \033[0m"
echo -e "\033[1;34m1) Unicorn\033[0m"
echo -e "\033[1;34m2) Puma\033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    1) eval "APPLICATION_SERVER=unicorn"; break;;
    2) eval "APPLICATION_SERVER=puma"; break;;
   * ) echo "Just enter 1 - 2, please.";;
  esac;
done;

echo -e "\n\033[0;32mApplication server: \033[7m $APPLICATION_SERVER \033[0m\n"
echo -e "=========================\n"

# sidekiq daemon
echo -e '\033[37;44m'"\033[1mSidekiq Support? (y/n): \033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    y) eval "SIDEKIQ_SUPPORT=true"; break;;
    n) eval "SIDEKIQ_SUPPORT=false"; break;;
   * ) echo "Just enter (y/n), please.";;
  esac;
done;

echo -e "\n\033[0;32mSidekiq Support: \033[7m $SIDEKIQ_SUPPORT \033[0m\n"
echo -e "=========================\n"

# actioncable support
echo -e '\033[37;44m'"\033[1mActioncable Support? (y/n): \033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    y) eval "ACTIONCABLE_SUPPORT=true"; break;;
    n) eval "ACTIONCABLE_SUPPORT=false"; break;;
   * ) echo "Just enter (y/n), please.";;
  esac;
done;

echo -e "\n\033[0;32mSActioncable Support: \033[7m $ACTIONCABLE_SUPPORT \033[0m\n"
echo -e "=========================\n"

# NGINX SERVER NAME
echo -e '\033[37;44m'"\033[1mNginx server name: \033[0m"
read -p "Enter: [$SERVER] " NGINX_SERVER_NAME
NGINX_SERVER_NAME=${NGINX_SERVER_NAME:-$SERVER}

echo -e "\n\033[0;32mNginx server name: \033[7m $NGINX_SERVER_NAME \033[0m\n"
echo -e "=========================\n"

# RUBY VERSION
echo -e '\033[37;44m'"\033[1mRuby version: \033[0m"
read -p "Enter: [ruby-3.1.2] " RUBY_VERSION
RUBY_VERSION=${RUBY_VERSION:-ruby-3.1.2}

echo -e "\n\033[0;32mRuby version: \033[7m $RUBY_VERSION \033[0m\n"
echo -e "=========================\n"

# POSTGRES VERSION
echo -e '\033[37;44m'"\033[1mPostgres version: \033[0m"
read -p "Enter: [14] " POSTGRES_VERSION
POSTGRES_VERSION=${POSTGRES_VERSION:-14}

echo -e "\n\033[0;32mPostgres version: \033[7m $POSTGRES_VERSION \033[0m\n"
echo -e "=========================\n"

# NODEJS VERSION
echo -e '\033[37;44m'"\033[1mNodeJS version: \033[0m"
read -p "Enter: [18] " NODE_VERSION
NODE_VERSION=${NODE_VERSION:-18}

echo -e "\n\033[0;32mNodeJS version: \033[7m $NODE_VERSION \033[0m\n"
echo -e "=========================\n"

# YARN VERSION
echo -e '\033[37;44m'"\033[1mYarn version: \033[0m"
read -p "Enter: [1.22.19] " YARN_VERSION
YARN_VERSION=${YARN_VERSION:-1.22.19}

echo -e "\n\033[0;32mYarn version: \033[7m $YARN_VERSION \033[0m\n"
echo -e "=========================\n"

# DB CLIENT ONLY
echo -e '\033[37;44m'"\033[1mDB client only? (y/n): \033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    y) eval "DB_CLIENT_ONLY=true"; break;;
    n) eval "DB_CLIENT_ONLY=false"; break;;
   * ) echo "Just enter (y/n), please.";;
  esac;
done;

echo -e "\n\033[0;32mDB client only: \033[7m $DB_CLIENT_ONLY \033[0m\n"
echo -e "=========================\n"

# DATABASE PASSWORD
if [ "${DB_CLIENT_ONLY}" == "false" ]; then
  RANDOM_PASSWORD=$(head -c 2048 /dev/urandom | md5sum | head -c 32 ; echo)
  echo -e '\033[37;44m'"\033[1mDatabase password: \033[0m"
  read -p "Enter: [Random password: $RANDOM_PASSWORD] " DATABASE_PASSWORD
  DATABASE_PASSWORD=${DATABASE_PASSWORD:-$RANDOM_PASSWORD}

  echo -e "\n\033[0;32mDatabase password: \033[7m $DATABASE_PASSWORD \033[0m\n"
  echo -e "=========================\n"
fi

# MONIT SUPPORT
echo -e '\033[37;44m'"\033[1mMonit Support? (y/n): \033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    y) eval "MONIT_SUPPORT=true"; break;;
    n) eval "MONIT_SUPPORT=false"; break;;
   * ) echo "Just enter (y/n), please.";;
  esac;
done;

echo -e "\n\033[0;32mMonit Support: \033[7m $MONIT_SUPPORT \033[0m\n"
echo -e "=========================\n"

# MONIT PASSWORD
if [ "${MONIT_SUPPORT}" == "true" ]; then
  RANDOM_PASSWORD=$(head -c 2048 /dev/urandom | md5sum | head -c 16 ; echo)
  echo -e '\033[37;44m'"\033[1mMonit password: \033[0m"
  read -p "Enter: [Random password: $RANDOM_PASSWORD] " MONIT_PASSWORD
  MONIT_PASSWORD=${MONIT_PASSWORD:-$RANDOM_PASSWORD}

  echo -e "\n\033[0;32mMonit password: \033[7m $MONIT_PASSWORD \033[0m\n"
  echo -e "=========================\n"
fi

# MUNIN SUPPORT
echo -e '\033[37;44m'"\033[1mMunin Support? (y/n): \033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    y) eval "MUNIN_SUPPORT=true"; break;;
    n) eval "MUNIN_SUPPORT=false"; break;;
   * ) echo "Just enter (y/n), please.";;
  esac;
done;

echo -e "\n\033[0;32mMunin Support: \033[7m $MUNIN_SUPPORT \033[0m\n"
echo -e "=========================\n"

# MUNIN PASSWORD
if [ "${MUNIN_SUPPORT}" == "true" ]; then
  RANDOM_PASSWORD=$(head -c 2048 /dev/urandom | md5sum | head -c 16 ; echo)

  echo -e '\033[37;44m'"\033[1mMunin password: \033[0m"
  read -p "Enter: [Random password: $RANDOM_PASSWORD] " MUNIN_PASSWORD
  MUNIN_PASSWORD=${MUNIN_PASSWORD:-$RANDOM_PASSWORD}

  echo -e "\n\033[0;32mMunin password: \033[7m $MUNIN_PASSWORD \033[0m\n"
  echo -e "=========================\n"
fi

# DOCKER SUPPORT
echo -e '\033[37;44m'"\033[1mDocker Support? (y/n): \033[0m"

while [ -z $prompt ];
  do read -p "Your choise: " choice;
  case "$choice" in
    y) eval "DOCKER_SUPPORT=true"; break;;
    n) eval "DOCKER_SUPPORT=false"; break;;
   * ) echo "Just enter (y/n), please.";;
  esac;
done;

echo -e "\n\033[0;32mDocker Support: \033[7m $DOCKER_SUPPORT \033[0m\n"
echo -e "=========================\n"

# EXTRA PACKAGES
echo -e '\033[37;44m'"\033[1mExtra packages (whitespace delimiter): \033[0m"
read -p "Enter: " EXTRA_PACKAGES

echo -e "\n\033[0;32mExtra packages: \033[7m $EXTRA_PACKAGES \033[0m\n"
echo -e "=========================\n"

# =================================================

cat > $PWD/config/config_variables.rb <<-EOF

set :application, "$APPLICATION_NAME"
set :deploy_user, "$DEPLOY_USER"
set :application_directory, "$APPLICATION_DIRECTORY"
set :application_server, "$APPLICATION_SERVER"
set :nginx_server_name, "$NGINX_SERVER_NAME"
set :ruby_version, "$RUBY_VERSION"
set :pg_password, '$DATABASE_PASSWORD'
set :postgres_version, "$POSTGRES_VERSION"
set :node_version, "$NODE_VERSION"
set :yarn_version, "$YARN_VERSION"
set :monit_support, $MONIT_SUPPORT
set :monit_password, "$MONIT_PASSWORD"
set :munin_support, $MUNIN_SUPPORT
set :munin_password, "$MUNIN_PASSWORD"
set :ubuntu_version, "$UBUNTU_VERSION"
set :extra_packages, "$EXTRA_PACKAGES"
set :ssh_public_key, "$SSH_PUBLIC_KEY"
set :sidekiq_support, $SIDEKIQ_SUPPORT
set :actioncable_support, $ACTIONCABLE_SUPPORT
set :docker_support, $DOCKER_SUPPORT
set :db_client_only, $DB_CLIENT_ONLY
set :root_access, $ROOT_ACCESS

server '$SERVER', roles: [:web, :app, :db], primary: true
EOF

echo -e "\n\n========================="
echo -e "Stage deploy config was saved in \033[1m config/config_variables.rb"
echo -e "=========================\n"

echo -e '\033[37;44m'"\033[1mExecute current commands (Step by step): \033[0m\n"
echo -e "\033[1;34mcap $STAGE install:create_user user=root\033[0m"
echo -e "\033[1;34mcap $STAGE install:all\033[0m"
echo -e "\033[1;34mcap $STAGE setup:all\033[0m\n"