#
# Cookbook Name:: zabbix
# Recipe:: server
#
# Copyright 2017, Linux-Help.org
# Authors:
# 	Eric Renfro <psi-jack@linux-help.org>
#

include_recipe 'chef-vault'
include_recipe "#{cookbook_name}::database"
include_recipe 'apache2'

#################################
# Include Additional Repositories
case node['platform_family']
when 'rhel'
  include_recipe 'yum-ius'
  include_recipe 'yum-zabbix'
end

#############################
# Setup and Install Webserver
case node['zabbix']['webserver']['backend']
when 'apache'
  include_recipe "#{cookbook_name}::server_apache"
when 'nginx'
  include_recipe "#{cookbook_name}::server_nginx"
else
  Chef::Application.fatal!('Webserver backend can either be apache or nginx', 121)
end

include_recipe "#{cookbook_name}::server_php"

##########################
# Setup and Install Apache
# apache_module 'proxy'
# apache_module 'proxy_fcgi'
#
# web_app "zabbix" do
#   server_name       node['fqdn']
#   server_aliases    ["zabbix.#{node['domain']}"]
#   template %W{
#     apache/#{node['platform']}/#{node['platform_version'].to_i}/zabbix.conf.erb
#     apache/#{node['platform']}/zabbix.conf.erb
#     apache/#{node['platform_family']}/#{node['platform_version'].to_i}/zabbix.conf.erb
#     apache/#{node['platform_family']}/zabbix.conf.erb
#     apache/default/zabbix.conf.erb
#     apache/zabbix.conf.erb
#   }
#   docroot           "/usr/share/zabbix"
#   directory_index   ["index.php"]
#   directory_options [ "FollowSymLinks" ]
#   allow_override    [ "None" ]
# end

#######################
# Install and Setup PHP
# case node['platform_family']
# when 'rhel'
#   # Remove distro-provided versions if installed
#   %w(php php-cli php-pear php-devel php-common).each do |pkg|
#     package pkg do
#       action :remove
#     end
#   end
#
#   # Setup PHP to use yum-ius packages
#   node.default['php']['packages'] = %w(php56u php56u-bcmath php56u-gd php56u-mbstring php56u-xml php56u-xmlrpc php56u-cli php56u-opcache)
#   node.default['php']['fpm_package'] = 'php56u-fpm'
#   node.default['php']['fpm_user'] = 'php-fpm'
#   node.default['php']['fpm_group'] = 'php-fpm'
#   node.default['php']['gd']['package'] = 'php56u-gd'
#   node.default['php']['apcu']['package'] = 'php56u-pecl-apcu'
#   node.default['php']['ldap']['package'] = 'php56u-ldap'
#
#   case node['zabbix']['database']['backend']
#   when 'postgresql'
#     node.default['php']['packages'] += ['php56u-pgsql']
#     node.default['php']['postgresql']['package'] = 'php56u-pgsql'
#   when 'mysql', 'mariadb', 'percona'
#     node.default['php']['packages'] += ['php56u-mysqlnd']
#     node.default['php']['mysql']['package'] = 'php56u-mysqlnd'
#   end
# end
#
# # Set PHP timezone
# node.default['php']['directives'] = {
#   'date.timezone' => node['zabbix']['php']['timezone']
# }
# include_recipe 'php'

#######################
# Install Zabbix Server
case node['zabbix']['database']['backend']
when 'postgresql'
  %w(zabbix-server-pgsql zabbix-web-pgsql zabbix-get).each do |pkg|
    package pkg
  end
when 'mysql', 'mariadb', 'percona'
  %w(zabbix-server-mysql zabbix-web-mysql zabbix-get).each do |pkg|
    package pkg
  end
end

#############################
# Install PHP-FPM Zabbix pool
# php_fpm_pool 'zabbix' do
#   listen            '127.0.0.1:9001'
#   user              'php-fpm'
#   group             'php-fpm'
#   chdir             '/usr/share/zabbix'
#   max_children      50
#   start_servers     5
#   min_spare_servers 5
#   max_spare_servers 35
#   additional_config({
#     'pm.process_idle_timeout'         => '10s',
#     'pm.max_requests'                 => '500',
#     'ping.path'                       => '/ping',
#     'ping.response'                   => 'pong',
#     'php_flag[display_errors]'        => 'off',
#     'php_admin_value[error_log]'      => '/var/log/php-fpm/www-error.log',
#     'php_admin_flag[log_errors]'      => 'on',
#     'php_admin_value[memory_limit]'   => '128M',
#     'php_value[session.save_handler]' => 'files',
#     'php_value[session.save_path]'    => '/var/lib/php-fpm/session',
#     'php_value[soap.wsdl_cache_dir]'  => '/var/lib/php-fpm/wsdlcache',
#     'php_value[max_execution_time]'   => '300',
#     'php_value[post_max_size]'        => '16M',
#     'php_value[upload_max_filesize]'  => '2M',
#     'php_value[max_input_time]'       => '300',
#     'php_value[always_populate_raw_post_data]' => '-1'
#   })
#   action :install
#   only_if { node['zabbix']['php']['use_fpm'] }
# end

#########################
# Configure Zabbix Server
template "/etc/zabbix/zabbix_server.conf" do
  credentials = chef_vault_item("secrets", "zabbix")
  variables({
    :DBUsername => credentials['username'],
    :DBPassword => credentials['password'],
    :DBDatabase => credentials['database']
  })
  source %W{
    zabbix/#{node['zabbix']['version']}/#{node['platform']}-#{node['platform_version'].to_i}/zabbix_server.conf.erb
    zabbix/#{node['zabbix']['version']}/#{node['platform']}/zabbix_server.conf.erb
    zabbix/#{node['zabbix']['version']}/#{node['platform_family']}-#{node['platform_version'].to_i}/zabbix_server.conf.erb
    zabbix/#{node['zabbix']['version']}/#{node['platform_family']}/zabbix_server.conf.erb
    zabbix/#{node['zabbix']['version']}/zabbix_server.conf.erb
    zabbix/zabbix_server.conf.erb
    default/zabbix_server.conf.erb
    zabbix_server.conf.erb
  }
  sensitive true
  mode  "0640"
  owner "root"
  group "root"
  notifies :restart, "service[zabbix-server]", :immediately
end

directory "/etc/zabbix/web" do
  mode  "0750"
  owner "root"
  #group "php-fpm"
  group case node['zabbix']['php']['use_fpm']
  when true
    node['php']['fpm_group']
  else
    case node['zabbix']['webserver']['backend']
    when 'apache'
      node['apache']['group']
    when 'nginx'
      node['nginx']['group']
    end
  end
end

template "/etc/zabbix/web/zabbix.conf.php" do
  credentials = chef_vault_item("secrets", "zabbix")
  variables({
    :DBUsername => credentials['username'],
    :DBPassword => credentials['password'],
    :DBDatabase => credentials['database']
  })
  source %W{
    zabbix/#{node['zabbix']['version']}/#{node['platform']}-#{node['platform_version'].to_i}/zabbix.conf.php.erb
    zabbix/#{node['zabbix']['version']}/#{node['platform']}/zabbix.conf.php.erb
    zabbix/#{node['zabbix']['version']}/#{node['platform_family']}-#{node['platform_version'].to_i}/zabbix.conf.php.erb
    zabbix/#{node['zabbix']['version']}/#{node['platform_family']}/zabbix.conf.php.erb
    zabbix/#{node['zabbix']['version']}/zabbix.conf.php.erb
    zabbix/zabbix.conf.php.erb
    default/zabbix.conf.php.erb
    zabbix.conf.php.erb
  }
  sensitive true
  mode  "0640"
  owner "root"
  #group "php-fpm"
  group case node['zabbix']['php']['use_fpm']
  when true
    node['php']['fpm_group']
  else
    case node['zabbix']['webserver']['backend']
    when 'apache'
      node['apache']['group']
    when 'nginx'
      node['nginx']['group']
    end
  end
end

template "/etc/zabbix/web/maintenance.inc.php" do
  source %W{
    zabbix/#{node['zabbix']['version']}/#{node['platform']}-#{node['platform_version'].to_i}/maintenance.inc.php.erb
    zabbix/#{node['zabbix']['version']}/#{node['platform']}/maintenance.inc.php.erb
    zabbix/#{node['zabbix']['version']}/#{node['platform_family']}-#{node['platform_version'].to_i}/maintenance.inc.php.erb
    zabbix/#{node['zabbix']['version']}/#{node['platform_family']}/maintenance.inc.php.erb
    zabbix/#{node['zabbix']['version']}/maintenance.inc.php.erb
    zabbix/maintenance.inc.php.erb
    default/maintenance.inc.php.erb
    maintenance.inc.php.erb
  }
  sensitive true
  mode  "0640"
  owner "root"
  #group "php-fpm"
  group case node['zabbix']['php']['use_fpm']
  when true
    node['php']['fpm_group']
  else
    case node['zabbix']['webserver']['backend']
    when 'apache'
      node['apache']['group']
    when 'nginx'
      node['nginx']['group']
    end
  end
end

#################
# Manage Services
service 'zabbix-server' do
  supports :restart => true, :start => true
  action [:enable, :start]
  subscribes :restart, "template[/etc/zabbix/zabbix_server.conf]", :delayed
end

service 'php-fpm' do
  action [:enable, :start]
  subscribes :reload, "php_fpm_pool[default]", :delayed
  only_if { node['zabbix']['php']['use_fpm'] }
end

######################
# Include Zabbix Agent
include_recipe 'zabbix::agent'