# == Schema Information
#
# Table name: terraform_libvirt_backends
#
#  id         :integer          not null, primary key
#  label      :string
#  uri        :string
#  created_at :datetime         not null
#  updated_at :datetime         not null
#  domain     :string
#

require 'ruby_terraform'

class Backends::TerraformLibvirt < ApplicationRecord
  include Backends::Terraform

  has_many :mini_environments, as: :backend

  self.table_name = 'terraform_libvirt_backends'

  def self.label
    'libvirt'
  end

  def type_and_id
    "#{self.class.name}=#{id}"
  end

  def build(mini_environment)
    slug = mini_environment.name.parameterize

    GovukGuix::BuildJob.enqueue(
      mini_environment.id,
      %w(whitehall government-frontend),
      type: 'vm-image-and-system',
      app_domain: "#{slug}.#{domain}",
      web_domain: "www.#{slug}.#{domain}",
      # Assume that this is a local environment, and not externally
      # accessible
      use_https: 'development'
    )
  end

  def start(mini_environment)
    logger.info "Setting up #{mini_environment.name}"

    with_terraform(mini_environment, 'terraform/libvirt') do
      RubyTerraform.apply(
        vars: terraform_variables(mini_environment),
        auto_approve: true
      )
    end
  end

  def destroy(mini_environment)
    with_terraform(mini_environment, 'terraform/libvirt') do
      RubyTerraform.destroy(
        vars: terraform_variables(mini_environment),
        force: true
      )
    end
  end

  def signon_url(mini_environment)
    "https://signon.#{mini_environment.name.parameterize}.#{domain}"
  end

  def terraform_variables(mini_environment)
    {
      uri: uri,
      machine_name: mini_environment.name.parameterize,
      vm_image_and_system: mini_environment.backend_data['build_output']
    }
  end
end