#
# Cookbook Name:: kosmos-nginx
# Recipe:: default
#

node.override['nginx']['default_site_enabled'] = false
node.override['nginx']['server_tokens']        = 'off'
node.override['nginx']['log_formats']['json']  = <<-EOF
'{"ip":"$remote_addr",'
'"time":"$time_local",'
'"host":"$host",'
'"method":"$request_method",'
'"uri":"$uri",'
'"status":$status,'
'"size":$body_bytes_sent,'
'"referer":"$http_referer",'
'"upstream_addr":"$upstream_addr",'
'"upstream_response_time":"$upstream_response_time",'
'"ua":"$http_user_agent"}'
EOF

node.override['nginx']['repo_source'] = 'nginx' # Install from official repo
node.override['nginx']['upstream_repository'] = "http://nginx.org/packages/mainline/#{node['platform']}"
include_recipe 'nginx'

# Override the nginx package resource to set a specific version, allowing
# to upgrade it
edit_resource!(:package, 'nginx') do
  version "1.19.1-1~#{node['lsb']['codename']}"
  notifies :reload, 'ohai[reload_nginx]', :immediately
end

# Generate Strong Diffie-Hellman Group (increases security)
# https://weakdh.org/sysadmin.html
openssl_dhparam "/etc/ssl/private/dhparams.pem" do
  key_length 2048
  mode 0600
  owner 'www-data'
end

cookbook_file "#{node['nginx']['dir']}/conf.d/tls_config.conf" do
  source 'nginx_tls_config.conf'
  owner  'root'
  group  'root'
  mode   '0644'
  notifies :restart, 'service[nginx]'
end

directory node["nginx"]["user_home"] do
  owner node["nginx"]["user"]
  group node["nginx"]["group"]
  action :create
  recursive true
end

# Maintenance page, to be copied or served when putting things in maintenance
# mode
cookbook_file "#{node["nginx"]["user_home"]}/maintenance.html" do
  source "maintenance.html"
  owner node['nginx']['user']
  group node['nginx']['group']
  mode "0640"
end

unless node.chef_environment == "development"
  include_recipe "kosmos-nginx::firewall"
end

ruby_block "nginx configuration" do
  block do
    file = Chef::Util::FileEdit.new("/etc/nginx/nginx.conf")
    file.insert_line_if_no_match(/stream {/, <<-EOF
stream {
  include /etc/nginx/streams-enabled/*;
}
    EOF
    )
    file.write_file
  end
  notifies :reload, 'ohai[reload_nginx]', :immediately
end