# -*- mode: ruby -*-
# -*- coding: utf-8 -*-

host_ip = "192.168.121.1"
operator_key = "${HOME}/.ssh/onap-key"
vagrant_user = "vagrant"
vagrant_password = "vagrant"
synced_folder_main = "/vagrant"
synced_folder_config = "#{synced_folder_main}/config"
synced_folder_tools_config = "#{synced_folder_main}/tools/config"
cluster_yml = "cluster.yml"
apt_prefs_dir = "/etc/apt/apt.conf.d"
apt_prefs = "95silent-approval"

vm_memory = 2 * 1024
vm_cpus = 1
vm_box = "generic/ubuntu1804"

operation = { name: 'operator', hostname: 'operator', ip: '172.17.4.254' }
cluster = [
  { name: 'control', hostname: 'control', ip: '172.17.4.100' },
  { name: 'worker', hostname: 'worker', ip: '172.17.4.101' }
]

all = cluster.dup << operation

operation_post_msg = "Run: \"vagrant provision #{operation[:name]} --provision-with=rke_up,setup_kubectl\" to complete cluster creation"

$replace_dns = <<-SCRIPT
  HOST_IP="$1"
  rm -f /etc/resolv.conf # drop its dynamic management by systemd-resolved
  echo nameserver "$HOST_IP" | tee /etc/resolv.conf
SCRIPT

$add_to_docker_group = <<-SCRIPT
  USER="$1"
  echo "Adding ${USER} to 'docker' group"
  usermod -aG docker "$USER"
SCRIPT

$setup_debconf = <<-SCRIPT
  echo "Setting debconf frontend to noninteractive"
  sed -i'.orig' '/^Config:/a Frontend: noninteractive' /etc/debconf.conf
SCRIPT

$install_sshpass = <<-SCRIPT
  apt-get update
  echo "Installing 'sshpass'"
  apt-get install sshpass
SCRIPT

$generate_key = <<-SCRIPT
  KEY_FILE="$1"
  echo "Generating SSH key (${KEY_FILE})"
  ssh-keygen -q -b 4096 -t rsa -f "$KEY_FILE" -N ""
SCRIPT

$deploy_key = <<-SCRIPT
  KEY="$1"
  USER="$2"
  PASS="$PASSWORD"
  IPS="$3"
  echo "Deploying ${KEY} for ${USER}"
  for ip in $IPS; do
    echo "on ${ip}"
    sshpass -p "$PASS" ssh-copy-id -o StrictHostKeyChecking=no -i "$KEY" "${USER}@${ip}"
  done
SCRIPT

$link_dotfiles = <<-SCRIPT
  SYNC_DIR="$1"
  for rc in ${SYNC_DIR}/dot_*; do
    src="$rc"
    dst="${HOME}/.${rc##*dot_}"
    echo "Symlinking ${src} to ${dst}"
    ln -sf "$src" "$dst"
  done
SCRIPT

$link_file = <<-SCRIPT
  SYNC_DIR="$1"
  FILE="$2"
  src="${SYNC_DIR}/${FILE}"
  dst="$3"
  echo "Symlinking ${src} to ${dst}"
  ln -sf "$src" "$dst"
SCRIPT

$rke_up = "rke up"
$rke_down = "rke remove --force"

Vagrant.configure('2') do |config|
  all.each do |machine|
    config.vm.define machine[:name] do |config|
      config.vm.box = vm_box
      config.vm.hostname = machine[:hostname]

      config.vm.provider :virtualbox do |v|
        v.name = machine[:name]
        v.memory = vm_memory
        v.cpus = vm_cpus
      end

      config.vm.provider :libvirt do |v|
        v.memory = vm_memory
        v.cpus = vm_cpus
      end

      config.vm.network :private_network, ip: machine[:ip]
      config.vm.provision "replace_dns", type: :shell, run: "always", inline: $replace_dns, args: host_ip

      if machine[:name] == 'control'
        config.vm.provision "customize_control", type: :shell, path: "tools/imported/openstack-k8s-controlnode.sh"
        config.vm.provision "fix_groups_control", type: :shell, inline: $add_to_docker_group, args: vagrant_user
      end

      if machine[:name] == 'worker'
        config.vm.provision "customize_worker", type: :shell, path: "tools/imported/openstack-k8s-workernode.sh"
        config.vm.provision "fix_group_worker", type: :shell, inline: $add_to_docker_group, args: vagrant_user
      end

      if machine[:name] == 'operator'
        config.vm.synced_folder ".", synced_folder_main, type: "rsync", rsync__exclude: "Vagrantfile"

        config.vm.provision "setup_debconf", type: :shell, inline: $setup_debconf
        config.vm.provision "link_apt_prefs", type: :shell, run: "always" do |s|
          s.inline = $link_file
          s.args = [synced_folder_tools_config, apt_prefs, apt_prefs_dir]
        end
        config.vm.provision "link_dotfiles_root", type: :shell, run: "always" do |s|
          s.inline = $link_dotfiles
          s.args = synced_folder_tools_config
        end
        config.vm.provision "link_dotfiles_user", type: :shell, run: "always" do |s|
          s.privileged = false
          s.inline = $link_dotfiles
          s.args = synced_folder_tools_config
        end

        config.vm.provision "install_sshpass", type: :shell, inline: $install_sshpass
        config.vm.provision "generate_key", type: :shell, privileged: false, inline: $generate_key, args: operator_key

        ips = ""
        cluster.each { |node| ips << node[:ip] << " " }
        config.vm.provision "deploy_key", type: :shell do |s|
          s.privileged = false
          s.inline = $deploy_key
          s.args = [operator_key, vagrant_user, ips]
          s.env = {'PASSWORD': vagrant_password}
        end

        config.vm.provision "get_rke", type: :shell, path: "tools/get_rke.sh"
        config.vm.provision "link_cluster_yml", type: :shell, run: "always" do |s|
          s.privileged = false
          s.inline = $link_file
          s.args = [synced_folder_config, cluster_yml, "$HOME"]
        end

        config.vm.post_up_message = operation_post_msg
        config.vm.provision "rke_up", type: :shell, run: "never", privileged: false, inline: $rke_up
        config.trigger.before :destroy do |trigger|
          trigger.warn = "Removing cluster"
          trigger.run_remote = {privileged: false, inline: $rke_down}
        end

        config.vm.provision "get_kubectl", type: :shell, path: "tools/get_kubectl.sh"
        config.vm.provision "setup_kubectl", type: :shell, run: "never" do |s|
          s.privileged = false
          s.path = "tools/setup_kubectl.sh"
        end
      end
    end
  end
end