version_map = {
	8 => {
		'version' => '8.16.1',
		'url' => 'https://nodejs.org/dist/v8.16.1/node-v8.16.1-linux-x64.tar.gz',
		'checksum' => '8ef575b64edbb6c04e506d8c8e0c5f92b90f4752841892c5adbb3a1e02863f46'
	},
	10 => {
		'version' => '10.16.3',
		'url' => 'https://nodejs.org/dist/v10.16.3/node-v10.16.3-linux-x64.tar.gz',
		'checksum' => '2f0397bb81c1d0c9901b9aff82a933257bf60f3992227b86107111a75b9030d9'
	},
	12 => {
		'version' => '12.9.1',
		'url' => 'https://nodejs.org/dist/v12.9.1/node-v12.9.1-linux-x64.tar.gz',
		'checksum' => '5488e9d9e860eb344726aabdc8f90d09e36602da38da3d16a7ee852fd9fbd91f'
	}
}

unless node['nodejs']['working-dir'][0] == '/'
	node.override['nodejs']['working-dir'] = "#{node['working-dir']}/#{node['nodejs']['working-dir']}"
end

unless version_map.key?(node['nodejs']['install_version'])
	raise <<~EOH
		Unsupported NodeJS version #{node['nodejs']['install_version']}.
		Supports #{version_map.keys}.
	EOH
end

set_version = version_map[node['nodejs']['install_version']]

node.default['nodejs']['install_method'] = 'binary'
node.default['nodejs']['version'] = set_version['version'].to_str
node.default['nodejs']['binary']['url'] = set_version['url']
node.default['nodejs']['binary']['checksum'] = set_version['checksum']

node.default['nodejs']['env_path'] = "/opt/theta42/app/#{node['app']['name']}/env/node"

include_recipe "nodejs"

directory node['nodejs']['env_path'] do
  owner node['app']['run_user']
  group node['app']['run_user']
  mode 0755
  recursive true
end

file "#{node['nodejs']['env_path']}/package.json" do
  owner node['app']['run_user']
  group node['app']['run_user']
  mode 0755
  content ::File.open("#{node['nodejs']['working-dir']}/package.json").read
  action :create
end

do_sudo = node['app']['run_user'] == 'root' ? 'sudo' : ''

execute 'Install NPM package.json' do
	cwd node['nodejs']['env_path']
	user node['app']['run_user']
	group node['app']['run_user']
	environment ({'HOME' => node['app']['run_user'] == 'root' ? '/root/' : "/home/#{node['app']['run_user']}"})
	command "#{do_sudo} npm --prefix #{node['nodejs']['env_path']} --python=\"`which python2.7`\" install #{node['nodejs']['env_path']}"
end

directory "/var/log/node/#{node['app']['name']}" do
	owner node['app']['run_user']
	group node['app']['run_user']
	mode 0755
	recursive true
end

bash 'Add Node path to env' do
	code "echo 'NODE_PATH=\"#{node['nodejs']['env_path']}/node_modules\"' > /etc/environment"
	not_if "grep NODE_PATH /etc/environment"
end

if node['nodejs']['service']
	systemd_unit "node-#{node['app']['name']}.service" do
	  content <<~EOU
	    [Unit]
	    Description=NodeJS app for #{node['app']['name']}
	    After=network.target

	    [Service]
	    Environment=NODE_PORT=#{node['nodejs']['port']}
	    Environment=NODE_PATH=#{node['nodejs']['env_path']}/node_modules/
	    Type=simple
	    WorkingDirectory=#{node['nodejs']['working-dir']}
	    ExecStart=/usr/bin/env node #{node['nodejs']['working-dir']}/#{node['nodejs']['exec_file']}
	    Restart=on-failure

	    [Install]
	    WantedBy=multi-user.target
	  EOU
	  action [:create, :enable, :start]
	end
end