#
# Author:: Chris Marchesi <cmarchesi@paybyphone.com>
# Cookbook:: php
# Resource:: fpm_pool
#
# Copyright:: 2015-2017, Chef Software, Inc <legal@chef.io>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

property :pool_name, String, name_property: true
property :listen, String, default: lazy { node['php']['fpm_socket'] }
property :user, String, default: lazy { node['php']['fpm_user'] }
property :group, String, default: lazy { node['php']['fpm_group'] }
property :listen_user, String, default: lazy { node['php']['fpm_listen_user'] }
property :listen_group, String, default: lazy { node['php']['fpm_listen_group'] }
property :process_manager, String, default: 'dynamic'
property :max_children, Integer, default: 5
property :start_servers, Integer, default: 2
property :min_spare_servers, Integer, default: 1
property :max_spare_servers, Integer, default: 3
property :chdir, String, default: '/'
property :additional_config, Hash, default: {}

action :install do
  # Ensure the FPM pacakge is installed, and the service is registered
  install_fpm_package
  register_fpm_service
  # I wanted to have this as a function in itself, but doing this seems to
  # break testing suites?
  template "#{node['php']['fpm_pooldir']}/#{new_resource.pool_name}.conf" do
    source 'fpm-pool.conf.erb'
    action :create
    cookbook 'php'
    variables(
      fpm_pool_name: new_resource.pool_name,
      fpm_pool_user: new_resource.user,
      fpm_pool_group: new_resource.group,
      fpm_pool_listen: new_resource.listen,
      fpm_pool_listen_user: new_resource.listen_user,
      fpm_pool_listen_group: new_resource.listen_group,
      fpm_pool_manager: new_resource.process_manager,
      fpm_pool_max_children: new_resource.max_children,
      fpm_pool_start_servers: new_resource.start_servers,
      fpm_pool_min_spare_servers: new_resource.min_spare_servers,
      fpm_pool_max_spare_servers: new_resource.max_spare_servers,
      fpm_pool_chdir: new_resource.chdir,
      fpm_pool_additional_config: new_resource.additional_config
    )
    notifies :restart, "service[#{node['php']['fpm_service']}]"
  end
end

action :uninstall do
  # Ensure the FPM pacakge is installed, and the service is registered
  register_fpm_service
  # Delete the FPM pool.
  file "#{node['php']['fpm_pooldir']}/#{new_resource.pool_name}.conf" do
    action :delete
  end
end

action_class do
  def install_fpm_package
    # Install the FPM pacakge for this platform, if it's available
    # Fail the run if it's an unsupported OS (FPM pacakge name not populated)
    # also, this is skipped for source
    return if node['php']['install_method'] == 'source'

    raise 'PHP-FPM package not found (you probably have an unsupported distro)' if node['php']['fpm_package'].nil?

    file node['php']['fpm_default_conf'] do
      action :nothing
    end

    package node['php']['fpm_package'] do
      action :install
      notifies :delete, "file[#{node['php']['fpm_default_conf']}]", :immediately
    end
  end

  def register_fpm_service
    service node['php']['fpm_service'] do
      action :enable
    end
  end
end