# GOV.UK Mini Environment Admin
# Copyright © 2018  Christopher Baines <mail@cbaines.net>
#
# This file is part of the GOV.UK Mini Environment Admin.
#
# The GOV.UK Mini Environment Admin is free software: you can
# redistribute it and/or modify it under the terms of the GNU Affero
# General Public License as published by the Free Software Foundation,
# either version 3 of the License, or (at your option) any later
# version.
#
# The GOV.UK Mini Environment Admin is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with the GOV.UK Mini Environment Admin.  If not, see
# <http://www.gnu.org/licenses/>.

class Backends::TerraformLibvirtController < ApplicationController
  def new
    @backend = Backends::TerraformLibvirt.new
    @backend.uri = 'qemu:///system'
  end

  def create
    backend = Backends::TerraformLibvirt.create(create_params)
    Backends::TerraformLibvirtJob.enqueue(backend.id, :deploy_backend)

    flash[:success] = "Backend #{backend.label} created"

    redirect_to terraform_libvirt_backend_path(backend)
  end

  def update
    @backend = Backends::TerraformLibvirt.update(
      params['id'],
      update_params
    )

    flash[:success] = "Backend #{@backend.label} updated"

    render :show
  end

  def show
    @backend = Backends::TerraformLibvirt.find(params['id'])
  end

  def destroy
    backend = Backends::TerraformLibvirt.find(params['id'])

    flash[:success] = "Backend #{backend.label} deleted"
    backend.delete

    redirect_to setup_path
  end

  def perform_action
    @backend = Backends::TerraformLibvirt.find(params['id'])

    action = params.require(:commit)

    case action
    when 'Destroy'
      Backends::TerraformLibvirtJob.enqueue(@backend.id, :destroy_backend)

      flash[:notice] = 'Destroying the backend'
    when 'Deploy'
      Backends::TerraformLibvirtJob.enqueue(@backend.id, :deploy_backend)

      flash[:notice] = 'Deploying the backend'
    when 'Refresh state'
      Backends::TerraformLibvirtJob.enqueue(@backend.id, :refresh_backend_state)

      flash[:notice] = 'Refreshing the backend state information'
    else
      flash[:error] = "Unknown action #{action}"
    end

    redirect_to terraform_libvirt_backend_path(@backend)
  end

  private

  def create_params
    params
      .require(:backends_terraform_libvirt)
      .permit(
        :label,
        :domain,
        :uri
      )
  end

  def update_params
    params
      .require(:backends_terraform_libvirt)
      .permit(
        :label
      )
  end
end