duhm/duhm

#!/usr/bin/env bash
# This script was generated by bashly (https://github.com/DannyBen/bashly)
# Modifying it manually is not recommended

# :command.version_command
version_command() {
  echo "$version"
}

# :command.usage
duhm_usage() {
  if [[ -n $long_usage ]]; then
    printf "duhm - Downgrade/Upgrade Hetzner Machines\n"
    echo 
  else
    printf "duhm - Downgrade/Upgrade Hetzner Machines\n"
    echo 
  fi

  printf "Usage:\n"
  printf "  duhm [command]\n"
  printf "  duhm [command] --help | -h\n"
  printf "  duhm --version | -v\n"
  echo
  # :command.usage_commands
  printf "Commands:\n"
  echo "  upgrade     Upgrade the server"
  echo "  downgrade   Downgrade the server"
  echo "  poweron     Power on the server"
  echo "  poweroff    Power off the server"
  echo

  if [[ -n $long_usage ]]; then
    printf "Options:\n"
    # :command.usage_fixed_flags
    echo "  --help, -h"
    printf "    Show this help\n"
    echo
    echo "  --version, -v"
    printf "    Show version number\n"
    echo

  fi
}

# :command.usage
duhm_upgrade_usage() {
  if [[ -n $long_usage ]]; then
    printf "duhm upgrade - Upgrade the server\n"
    echo 
  else
    printf "duhm upgrade - Upgrade the server\n"
    echo 
  fi

  printf "Shortcut: u\n"
  echo

  printf "Usage:\n"
  printf "  duhm upgrade FILENAME\n"
  printf "  duhm upgrade --help | -h\n"
  echo

  if [[ -n $long_usage ]]; then
    printf "Options:\n"
    # :command.usage_fixed_flags
    echo "  --help, -h"
    printf "    Show this help\n"
    echo

    # :command.usage_args
    printf "Arguments:\n"
    
    # :argument.usage
    echo "  FILENAME"
    printf "    The YAML file with VPS & SSH settings\n"
    echo

    # :command.usage_examples
    printf "Examples:\n"
    
    printf "  duhm upgrade settings.yml\n"
    echo

  fi
}

# :command.usage
duhm_downgrade_usage() {
  if [[ -n $long_usage ]]; then
    printf "duhm downgrade - Downgrade the server\n"
    echo 
  else
    printf "duhm downgrade - Downgrade the server\n"
    echo 
  fi

  printf "Shortcut: d\n"
  echo

  printf "Usage:\n"
  printf "  duhm downgrade FILENAME\n"
  printf "  duhm downgrade --help | -h\n"
  echo

  if [[ -n $long_usage ]]; then
    printf "Options:\n"
    # :command.usage_fixed_flags
    echo "  --help, -h"
    printf "    Show this help\n"
    echo

    # :command.usage_args
    printf "Arguments:\n"
    
    # :argument.usage
    echo "  FILENAME"
    printf "    The YAML file with VPS & SSH settings\n"
    echo

    # :command.usage_examples
    printf "Examples:\n"
    
    printf "  duhm downgrade settings.yml\n"
    echo

  fi
}

# :command.usage
duhm_poweron_usage() {
  if [[ -n $long_usage ]]; then
    printf "duhm poweron - Power on the server\n"
    echo 
  else
    printf "duhm poweron - Power on the server\n"
    echo 
  fi

  printf "Shortcut: true\n"
  echo

  printf "Usage:\n"
  printf "  duhm poweron FILENAME\n"
  printf "  duhm poweron --help | -h\n"
  echo

  if [[ -n $long_usage ]]; then
    printf "Options:\n"
    # :command.usage_fixed_flags
    echo "  --help, -h"
    printf "    Show this help\n"
    echo

    # :command.usage_args
    printf "Arguments:\n"
    
    # :argument.usage
    echo "  FILENAME"
    printf "    The YAML file with VPS & SSH settings\n"
    echo

    # :command.usage_examples
    printf "Examples:\n"
    
    printf "  duhm poweron settings.yml\n"
    echo

  fi
}

# :command.usage
duhm_poweroff_usage() {
  if [[ -n $long_usage ]]; then
    printf "duhm poweroff - Power off the server\n"
    echo 
  else
    printf "duhm poweroff - Power off the server\n"
    echo 
  fi

  printf "Usage:\n"
  printf "  duhm poweroff FILENAME\n"
  printf "  duhm poweroff --help | -h\n"
  echo

  if [[ -n $long_usage ]]; then
    printf "Options:\n"
    # :command.usage_fixed_flags
    echo "  --help, -h"
    printf "    Show this help\n"
    echo

    # :command.usage_args
    printf "Arguments:\n"
    
    # :argument.usage
    echo "  FILENAME"
    printf "    The YAML file with VPS & SSH settings\n"
    echo

    # :command.usage_examples
    printf "Examples:\n"
    
    printf "  duhm poweroff settings.yml\n"
    echo

  fi
}

# :command.inspect_args
inspect_args() {
  echo args:
  for k in "${!args[@]}"; do echo "- \${args[$k]} = ${args[$k]}"; done
}

# :command.user_lib
# :src/lib/yaml.sh
# ---
# YAML parser
# This file is a part of Bashly standard library
# Does not support arrays, only hashes
#
# Source: https://stackoverflow.com/a/21189044/413924
#
# Usage:
#
#   yaml_load "settings.yml"             # print variables
#   yaml_load "settings.yml" "config_"   # use prefix
#   eval $(yaml_load "settings.yml")     # create variables in scope
#
# ---

yaml_load() {
   local prefix=$2
   local s='[[:space:]]*' w='[a-zA-Z0-9_]*'
   local fs

   fs=$(echo @|tr @ '\034')

   sed -ne "s|^\($s\):|\1|" \
        -e "s|^\($s\)\($w\)$s:${s}[\"']\(.*\)[\"']$s\$|\1$fs\2$fs\3|p" \
        -e "s|^\($s\)\($w\)$s:$s\(.*\)$s\$|\1$fs\2$fs\3|p"  "$1" |
   awk -F"$fs" '{
      indent = length($1)/2;
      vname[indent] = $2;
      for (i in vname) {if (i > indent) {delete vname[i]}}
      if (length($3) > 0) {
         vn=""; for (i=0; i<indent; i++) {vn=(vn)(vname[i])("_")}
         printf("%s%s%s=\"%s\"\n", "'"$prefix"'",vn, $2, $3);
      }
   }'
}

# :src/lib/colors.sh
# ---
# Color functions
# This file is a part of Bashly standard library
#
# Usage:
# Use any of the functions below to color or format a portion of a string.
# 
#   echo "before $(red this is red) after"
#   echo "before $(green_bold this is green_bold) after"
#
# ---

red() { printf "\e[31m%b\e[0m\n" "$*"; }
green() { printf "\e[32m%b\e[0m\n" "$*"; }
yellow() { printf "\e[33m%b\e[0m\n" "$*"; }
blue() { printf "\e[34m%b\e[0m\n" "$*"; }
magenta() { printf "\e[35m%b\e[0m\n" "$*"; }
cyan() { printf "\e[36m%b\e[0m\n" "$*"; }
bold() { printf "\e[1m%b\e[0m\n" "$*"; }
underlined() { printf "\e[4m%b\e[0m\n" "$*"; }
red_bold() { printf "\e[1;31m%b\e[0m\n" "$*"; }
green_bold() { printf "\e[1;32m%b\e[0m\n" "$*"; }
yellow_bold() { printf "\e[1;33m%b\e[0m\n" "$*"; }
blue_bold() { printf "\e[1;34m%b\e[0m\n" "$*"; }
magenta_bold() { printf "\e[1;35m%b\e[0m\n" "$*"; }
cyan_bold() { printf "\e[1;36m%b\e[0m\n" "$*"; }
red_underlined() { printf "\e[4;31m%b\e[0m\n" "$*"; }
green_underlined() { printf "\e[4;32m%b\e[0m\n" "$*"; }
yellow_underlined() { printf "\e[4;33m%b\e[0m\n" "$*"; }
blue_underlined() { printf "\e[4;34m%b\e[0m\n" "$*"; }
magenta_underlined() { printf "\e[4;35m%b\e[0m\n" "$*"; }
cyan_underlined() { printf "\e[4;36m%b\e[0m\n" "$*"; }

# :command.command_functions
# :command.function
duhm_upgrade_command() {
  # :src/upgrade_command.sh
  echo "$(green_bold "Upgrading the Hetzner VPS")"
  echo "$(green_bold "=========================")"
  
  echo "$(blue_bold "Loading VPS settings...")"
  filename=${args[filename]}
  eval $(yaml_load "$filename")
  
  echo "$(blue_bold "Executing the down commands on the VPS...")"
  ssh $ssh_user@$ssh_host -p $ssh_port $commands_down
  
  echo "$(blue_bold "Powering off the VPS...")"
  hcloud server poweroff $vps_name
  
  echo "$(blue_bold "Upgrading the VPS...")"
  hcloud server change-type --keep-disk $vps_name $vps_type_upgrade
  
  echo "$(blue_bold "Powering on the VPS...")"
  hcloud server poweron $vps_name
  
  echo "$(blue_bold "Waiting 15 seconds...")"
  sleep 15
  
  echo "$(blue_bold "Executing the up commands on the VPS...")"
  ssh $ssh_user@$ssh_host -p $ssh_port $commands_up
  
  echo "$(green_bold "Upgrade successful!")"
}

# :command.function
duhm_downgrade_command() {
  # :src/downgrade_command.sh
  echo "$(green_bold "Downgrading the Hetzner VPS")"
  echo "$(green_bold "===========================")"
  
  echo "$(blue_bold "Loading VPS settings...")"
  filename=${args[filename]}
  eval $(yaml_load "$filename")
  
  echo "$(blue_bold "Executing the down commands on the VPS...")"
  ssh $ssh_user@$ssh_host -p $ssh_port $commands_down
  
  echo "$(blue_bold "Powering off the VPS...")"
  hcloud server poweroff $vps_name
  
  echo "$(blue_bold "Downgrading the VPS...")"
  hcloud server change-type --keep-disk $vps_name $vps_type_downgrade
  
  echo "$(blue_bold "Powering on the VPS...")"
  hcloud server poweron $vps_name
  
  echo "$(blue_bold "Waiting 15 seconds...")"
  sleep 15
  
  echo "$(blue_bold "Executing the up commands on the VPS...")"
  ssh $ssh_user@$ssh_host -p $ssh_port $commands_up
  
  echo "$(green_bold "Downgrade successful!")"
}

# :command.function
duhm_poweron_command() {
  # :src/poweron_command.sh
  echo "$(green_bold "Powering on the Hetzner VPS")"
  echo "$(green_bold "===========================")"
  
  echo "$(blue_bold "Loading VPS settings...")"
  filename=${args[filename]}
  eval $(yaml_load "$filename")
  
  echo "$(blue_bold "Powering on the VPS...")"
  hcloud server poweron $vps_name
  
  echo "$(blue_bold "Waiting 15 seconds...")"
  sleep 15
  
  echo "$(blue_bold "Executing the up commands on the VPS...")"
  ssh $ssh_user@$ssh_host -p $ssh_port $commands_up
  
  echo "$(green_bold "Power on successful!")"
}

# :command.function
duhm_poweroff_command() {
  # :src/poweroff_command.sh
  echo "$(green_bold "Powering off the Hetzner VPS")"
  echo "$(green_bold "============================")"
  
  echo "$(blue_bold "Loading VPS settings...")"
  filename=${args[filename]}
  eval $(yaml_load "$filename")
  
  echo "$(blue_bold "Executing the down commands on the VPS...")"
  ssh $ssh_user@$ssh_host -p $ssh_port $commands_down
  
  echo "$(blue_bold "Powering off the VPS...")"
  hcloud server poweroff $vps_name
  
  echo "$(green_bold "Power off successful!")"
}

# :command.parse_requirements
parse_requirements() {
  # :command.fixed_flag_filter
  case "$1" in
  --version | -v )
    version_command
    exit
    ;;
  
  --help | -h )
    long_usage=yes
    duhm_usage
    exit 1
    ;;
  
  esac
  # :command.environment_variables_filter
  # :command.dependencies_filter
  # :command.command_filter
  action=$1
  
  case $action in
  -* )
    ;;
  
  upgrade | u )
    action="upgrade"
    shift
    duhm_upgrade_parse_requirements "$@"
    shift $#
    ;;    
  
  downgrade | d )
    action="downgrade"
    shift
    duhm_downgrade_parse_requirements "$@"
    shift $#
    ;;    
  
  poweron | true )
    action="poweron"
    shift
    duhm_poweron_parse_requirements "$@"
    shift $#
    ;;    
  
  poweroff )
    action="poweroff"
    shift
    duhm_poweroff_parse_requirements "$@"
    shift $#
    ;;    
  
  * )
    duhm_usage
    exit 1
    ;;
  
  esac
  # :command.required_args_filter
  # :command.required_flags_filter
  # :command.parse_requirements_while
  while [[ $# -gt 0 ]]; do
    key="$1"
    case "$key" in
  
    -* )
      printf "invalid option: %s\n" "$key"
      exit 1
      ;;
  
    * )
      # :command.parse_requirements_case
      printf "invalid argument: %s\n" "$key"
      exit 1
      ;;
  
    esac
  done
  # :command.default_assignments
}

# :command.parse_requirements
duhm_upgrade_parse_requirements() {
  # :command.fixed_flag_filter
  case "$1" in
  --version | -v )
    version_command
    exit
    ;;
  
  --help | -h )
    long_usage=yes
    duhm_upgrade_usage
    exit 1
    ;;
  
  esac
  # :command.environment_variables_filter
  # :command.dependencies_filter
  # :command.command_filter
  action="upgrade"
  # :command.required_args_filter
  if [[ $1 && $1 != -* ]]; then
    args[filename]=$1
    shift
  else
    printf "missing required argument: FILENAME\nusage: duhm upgrade FILENAME\n"
    exit 1
  fi
  # :command.required_flags_filter
  # :command.parse_requirements_while
  while [[ $# -gt 0 ]]; do
    key="$1"
    case "$key" in
  
    -* )
      printf "invalid option: %s\n" "$key"
      exit 1
      ;;
  
    * )
      # :command.parse_requirements_case
      if [[ ! ${args[filename]} ]]; then
        args[filename]=$1
        shift
      else
        printf "invalid argument: %s\n" "$key"
        exit 1
      fi
      ;;
  
    esac
  done
  # :command.default_assignments
}

# :command.parse_requirements
duhm_downgrade_parse_requirements() {
  # :command.fixed_flag_filter
  case "$1" in
  --version | -v )
    version_command
    exit
    ;;
  
  --help | -h )
    long_usage=yes
    duhm_downgrade_usage
    exit 1
    ;;
  
  esac
  # :command.environment_variables_filter
  # :command.dependencies_filter
  # :command.command_filter
  action="downgrade"
  # :command.required_args_filter
  if [[ $1 && $1 != -* ]]; then
    args[filename]=$1
    shift
  else
    printf "missing required argument: FILENAME\nusage: duhm downgrade FILENAME\n"
    exit 1
  fi
  # :command.required_flags_filter
  # :command.parse_requirements_while
  while [[ $# -gt 0 ]]; do
    key="$1"
    case "$key" in
  
    -* )
      printf "invalid option: %s\n" "$key"
      exit 1
      ;;
  
    * )
      # :command.parse_requirements_case
      if [[ ! ${args[filename]} ]]; then
        args[filename]=$1
        shift
      else
        printf "invalid argument: %s\n" "$key"
        exit 1
      fi
      ;;
  
    esac
  done
  # :command.default_assignments
}

# :command.parse_requirements
duhm_poweron_parse_requirements() {
  # :command.fixed_flag_filter
  case "$1" in
  --version | -v )
    version_command
    exit
    ;;
  
  --help | -h )
    long_usage=yes
    duhm_poweron_usage
    exit 1
    ;;
  
  esac
  # :command.environment_variables_filter
  # :command.dependencies_filter
  # :command.command_filter
  action="poweron"
  # :command.required_args_filter
  if [[ $1 && $1 != -* ]]; then
    args[filename]=$1
    shift
  else
    printf "missing required argument: FILENAME\nusage: duhm poweron FILENAME\n"
    exit 1
  fi
  # :command.required_flags_filter
  # :command.parse_requirements_while
  while [[ $# -gt 0 ]]; do
    key="$1"
    case "$key" in
  
    -* )
      printf "invalid option: %s\n" "$key"
      exit 1
      ;;
  
    * )
      # :command.parse_requirements_case
      if [[ ! ${args[filename]} ]]; then
        args[filename]=$1
        shift
      else
        printf "invalid argument: %s\n" "$key"
        exit 1
      fi
      ;;
  
    esac
  done
  # :command.default_assignments
}

# :command.parse_requirements
duhm_poweroff_parse_requirements() {
  # :command.fixed_flag_filter
  case "$1" in
  --version | -v )
    version_command
    exit
    ;;
  
  --help | -h )
    long_usage=yes
    duhm_poweroff_usage
    exit 1
    ;;
  
  esac
  # :command.environment_variables_filter
  # :command.dependencies_filter
  # :command.command_filter
  action="poweroff"
  # :command.required_args_filter
  if [[ $1 && $1 != -* ]]; then
    args[filename]=$1
    shift
  else
    printf "missing required argument: FILENAME\nusage: duhm poweroff FILENAME\n"
    exit 1
  fi
  # :command.required_flags_filter
  # :command.parse_requirements_while
  while [[ $# -gt 0 ]]; do
    key="$1"
    case "$key" in
  
    -* )
      printf "invalid option: %s\n" "$key"
      exit 1
      ;;
  
    * )
      # :command.parse_requirements_case
      if [[ ! ${args[filename]} ]]; then
        args[filename]=$1
        shift
      else
        printf "invalid argument: %s\n" "$key"
        exit 1
      fi
      ;;
  
    esac
  done
  # :command.default_assignments
}

# :command.initialize
initialize() {
  version="0.1.0"
  long_usage=''
  set -e  

  # :src/initialize.sh
  # Code here runs inside the initialize() function
  # Use it for anything that you need to run before any other function, like
  # setting environment vairables:
  # CONFIG_FILE=settings.ini
  #
  # Feel free to empty (but not delete) this file.
}

# :command.run
run() {
  declare -A args
  parse_requirements "$@"

  if [[ $action == "upgrade" ]]; then
    if [[ ${args[--help]} ]]; then
      long_usage=yes
      duhm_upgrade_usage
    else
      duhm_upgrade_command
    fi
  
  elif [[ $action == "downgrade" ]]; then
    if [[ ${args[--help]} ]]; then
      long_usage=yes
      duhm_downgrade_usage
    else
      duhm_downgrade_command
    fi
  
  elif [[ $action == "poweron" ]]; then
    if [[ ${args[--help]} ]]; then
      long_usage=yes
      duhm_poweron_usage
    else
      duhm_poweron_command
    fi
  
  elif [[ $action == "poweroff" ]]; then
    if [[ ${args[--help]} ]]; then
      long_usage=yes
      duhm_poweroff_usage
    else
      duhm_poweroff_command
    fi
  
  elif [[ ${args[--version]} ]]; then
    version_command
  elif [[ ${args[--help]} ]]; then
    long_usage=yes
    duhm_usage
  elif [[ $action == "root" ]]; then
    root_command
  fi
}

initialize
run "$@"