setup.sh

#!/usr/bin/env bash

OS=$(uname -s)
if [[ "$OS" == "OpenBSD" || "$OS" == "FreeBSD" ]]; then
    echo "Detected $OS..."
    echo "Setting needed ENV to build gem native extensions..."
    export BSD_INSTALL_PROGRAM="/usr/bin/install  -s -m 555"
    export BSD_INSTALL_LIB="/usr/bin/install  -s -m 444"
    export BSD_INSTALL_SCRIPT="/usr/bin/install  -m 555"
    export BSD_INSTALL_DATA="/usr/bin/install  -m 0644"
    export BSD_INSTALL_MAN="/usr/bin/install  -m 444"
elif [[ "$OS" == "Darwin" ]]; then
    if brew ls --versions openssl > /dev/null; then
        echo "Detected $OS..."
        echo "Setting needed ENV to build psycopg2..."
        export LDFLAGS="-L/usr/local/opt/openssl/lib"
        export CPPFLAGS="-I/usr/local/opt/openssl/include"
        export PKG_CONFIG_PATH="/usr/local/opt/openssl/lib/pkgconfig"
    fi
fi

#######################
#  Dependency Checks  #
#######################

total_nameservers=$(grep -c 'nameserver' /etc/resolv.conf || :)
total_local_nameservers=$(grep -c 'nameserver 127' /etc/resolv.conf || :)
if [[ $total_local_nameservers -gt 0 && $total_nameservers -eq 1 ]]; then
    echo "Warning!"
    echo "It looks like you only have a loopback nameserver defined in /etc/resolv.conf"
    echo "DNS resolution inside Docker containers will fail."
    echo "You will need to set correct resolvers."
    echo "This is usually caused by NetworkManager using dnsmasq to handle"
    echo "setting up your resolvers."
    echo
    read -rp "Press any key to continue."
fi

cmd_list=(
  'ruby ruby2.2 ruby2.1 ruby2.0'
  'bundle'
  'virtualenv virtualenv-2.7 virtualenv-2.5'
  'docker docker.io'
  'vagrant'
)

# Function to check if referenced command exists
cmd_exists() {
  if [ $# -eq 0 ]; then
    echo 'WARNING: No command argument was passed to verify exists'
  fi

  #cmds=($(echo "${1}"))
  cmds=($(printf '%s' "${1}"))
  fail_counter=0
  for cmd in "${cmds[@]}"; do
    command -v "${cmd}" >&/dev/null # portable 'which'
    rc=$?
    if [ "${rc}" != "0" ]; then
      fail_counter=$((fail_counter+1))
    fi
  done

  if [ "${fail_counter}" -ge "${#cmds[@]}" ]; then
    echo "Unable to find one of the required commands [${cmds[*]}] in your PATH"
    return 1
  fi
}

# Verify that referenced commands exist on the system
for cmd in "${cmd_list[@]}"; do
  cmd_exists "${cmd[@]}"
  # shellcheck disable=SC2181
  if [ $? -ne 0 ]; then
    return $?
  fi
done

#######################
#  Library Functions  #
#######################

run() {
    "$@"
    rc=$?
    if [[ $rc -gt 0 ]]; then
        return $rc
    fi
}

#######################
echo " -------------------------------------------------------------------"
echo "|                                                                   |"
echo "| You should be running this with "source ./setup.sh"                 |"
echo "| Running this directly like:                                       |"
echo "| * ./setup.sh                                                      |"
echo "| * bash ./setup.sh                                                 |"
echo "| Will fail to set certain environment variables that may bite you. |"
echo "|                                                                   |"
echo "|                                                                   |"
echo "| Waiting 5 seconds for you make sure you have ran this correctly   |"
echo "| Cntrl-C to bail out...                                            |"
echo "|                                                                   |"
echo " -------------------------------------------------------------------"

for n in {5..1}; do
  printf "\r%s " $n
  sleep 1
done

ruby_version=$(ruby --version | awk '{print $2}' | cut -d. -f1)
if [[ "${ruby_version}" -lt 2 ]]; then
    echo 'You need a version of ruby > 2 to run tests.'
    echo 'Upgrade your ruby (or use rbenv/rvm/ruby-install) and come back.'
    return 1
fi

if [ ! -d ./.venv ]; then
    echo "Failed to find a virtualenv, creating one."
    run virtualenv ./.venv
else
    echo "Found existing virtualenv, using that instead."
fi

. ./.venv/bin/activate
run pip install --upgrade pip
run pip install --upgrade setuptools
run pip install -r requirements.txt
run bundle install --path ./.vendor/bundle
run ansible-galaxy install -r requirements.yml -p galaxy_roles -f

# Now, we need to set it so that we can use bundle exec from anywhere
export BUNDLE_GEMFILE
BUNDLE_GEMFILE="$(pwd)/Gemfile"

# We also want to unset this when we run deactivate, but virtualenv provides that function.
# We'll need to overwrite it here and export it

deactivate () {
        unset -f pydoc > /dev/null 2>&1
        if ! [ -z "${_OLD_VIRTUAL_PATH+_}" ]
        then
                PATH="$_OLD_VIRTUAL_PATH"
                export PATH
                unset _OLD_VIRTUAL_PATH
        fi
        if ! [ -z "${_OLD_VIRTUAL_PYTHONHOME+_}" ]
        then
                PYTHONHOME="$_OLD_VIRTUAL_PYTHONHOME"
                export PYTHONHOME
                unset _OLD_VIRTUAL_PYTHONHOME
        fi
        if [ -n "${BASH-}" ] || [ -n "${ZSH_VERSION-}" ]
        then
                hash -r 2> /dev/null
        fi
        if ! [ -z "${_OLD_VIRTUAL_PS1+_}" ]
        then
                PS1="$_OLD_VIRTUAL_PS1"
                export PS1
                unset _OLD_VIRTUAL_PS1
        fi
        unset VIRTUAL_ENV
        unset BUNDLE_GEMFILE
        if [ ! "${1-}" = "nondestructive" ]
        then
                unset -f deactivate
        fi
}


if [ "$ZSH_VERSION" ]; then
    autoload -Uz deactivate
else
    export -f deactivate
fi

echo " ----------------------------------------------------------------------------"
echo "|                                                                            |"
echo "| You are now within a python virtualenv at ./.venv                          |"
echo "| This means that all python packages installed will not affect your system. |"
echo "| To return _back_ to system python, run deactivate in your shell.           |"
echo "|                                                                            |"
echo " ----------------------------------------------------------------------------"