# -*- mode: ruby -*-
# vi: set ft=ruby :

disable_gui = ENV['VESPA_VAGRANT_DISABLE_GUI']

def get_mandatory_env_value(name)
  opt = ENV[name]
  if opt.nil? or opt.empty?
    raise Vagrant::Errors::VagrantError.new, "Environment variable #{name} must be set to a valid value before running vagrant"
  end
  return opt
end

def get_env_value(name, fallback)
  opt = ENV[name]
  if opt.nil? or opt.empty?
    return fallback
  end
  return opt
end

vm_box = get_mandatory_env_value('VESPA_VAGRANT_VM_BOX')
vm_memory = get_env_value('VESPA_VAGRANT_VM_MEMORY', "8192")
vm_cpus = get_env_value('VESPA_VAGRANT_VM_CPUS', 4)

unless disable_gui
  vm_box_url = get_mandatory_env_value('VESPA_VAGRANT_VM_BOX_URL')
end

# For a complete reference, please see the online documentation at https://docs.vagrantup.com.
Vagrant.configure("2") do |config|

  config.vm.box = vm_box
  config.vm.box_url = vm_box_url unless disable_gui

  config.ssh.forward_agent = true

  config.vm.synced_folder "../dist", "/vagrant/dist"

  config.vm.provider "virtualbox" do |vb|
    # Display the VirtualBox GUI when booting the machine
    vb.gui = true unless disable_gui
    vb.name = "vespa-dev"

    vb.memory = vm_memory
    vb.cpus = vm_cpus
  end
  
  # Install required and nice-to-have packages
  config.vm.provision "shell", inline: <<-SHELL
    yum-config-manager --add-repo https://copr.fedorainfracloud.org/coprs/g/vespa/vespa/repo/epel-7/group_vespa-vespa-epel-7.repo
    yum -y install epel-release
    yum -y install centos-release-scl
    yum -y install yum-utils
    yum -y install git \
        ccache \
        maven \
        rpm-build \
        valgrind \
        sudo \
        firefox \
        vim \
        emacs
    sed -e '/^BuildRequires:/d' -e 's/^Requires:/BuildRequires:/' /vagrant/dist/vespa.spec > /tmp/vesparun.spec
    yum-builddep -y /vagrant/dist/vespa.spec /tmp/vesparun.spec
    rm /tmp/vesparun.spec
    echo -e "* soft nproc 409600\n* hard nproc 409600" > /etc/security/limits.d/99-nproc.conf
    echo -e "* soft nofile 262144\n* hard nofile 262144" > /etc/security/limits.d/99-nofile.conf

    unless disable_gui
      echo -e "fs.inotify.max_user_watches = 524288" > /etc/sysctl.d/clion.conf
      wget -q -O - https://download.jetbrains.com/cpp/CLion-2018.1.6.tar.gz | tar -C /opt -zx
      ln -sf /opt/clion-2018.1.6/bin/clion.sh /usr/bin/clion
    end

    yum update -y
    hostname localhost
  SHELL

  # Add settings for Vespa and dev tools as the default user, usually 'vagrant' (privileged: false)
  # NOTE: adding these settings to .bashrc would break vagrant suspend/resume/provision
  #       due to env vars modified by /opt/rh/devtoolset-8/enable.
  config.vm.provision "shell", privileged: false, inline: <<-SCRIPT
    grep -l VESPA_HOME ~/.bash_profile >/dev/null || (\
      printf "%s\n" \
        'export VESPA_HOME=$HOME/vespa' \
        'export PATH=$PATH:$VESPA_HOME/bin' \
        'source /opt/rh/rh-maven35/enable' \
        'source /opt/rh/devtoolset-8/enable' \
        >> ~/.bash_profile )
  SCRIPT

end