# define: nginx::resource::vhost
#
# This definition creates a virtual host
#
# Parameters:
#   [*ensure*]              - Enables or disables the specified vhost (present|absent)
#   [*listen_ip*]           - Default IP Address for NGINX to listen with this vHost on. Defaults to all interfaces (*)
#   [*listen_port*]         - Default IP Port for NGINX to listen with this vHost on. Defaults to TCP 80
#   [*listen_options*]      - Extra options for listen directive like 'default' to catchall. Undef by default.
#   [*ipv6_enable*]         - BOOL value to enable/disable IPv6 support (false|true). Module will check to see if IPv6
#                             support exists on your system before enabling.
#   [*ipv6_listen_ip*]      - Default IPv6 Address for NGINX to listen with this vHost on. Defaults to all interfaces (::)
#   [*ipv6_listen_port*]    - Default IPv6 Port for NGINX to listen with this vHost on. Defaults to TCP 80
#   [*ipv6_listen_options*] - Extra options for listen directive like 'default' to catchall. Template will allways add ipv6only=on.
#                             While issue jfryman/puppet-nginx#30 is discussed, default value is 'default'.
#   [*index_files*]         - Default index files for NGINX to read when traversing a directory
#   [*proxy*]               - Proxy server(s) for the root location to connect to.  Accepts a single value, can be used in
#                             conjunction with nginx::resource::upstream
#   [*proxy_read_timeout*]  - Override the default the proxy read timeout value of 90 seconds
#   [*fastcgi*]             - location of fastcgi (host:port)
#   [*fastcgi_params*]      - optional alternative fastcgi_params file to use
#   [*fastcgi_script*]      - optional SCRIPT_FILE parameter
#   [*ssl*]                 - Indicates whether to setup SSL bindings for this vhost.
#   [*ssl_cert*]            - Pre-generated SSL Certificate file to reference for SSL Support. This is not generated by this module.
#   [*ssl_key*]             - Pre-generated SSL Key file to reference for SSL Support. This is not generated by this module.
#   [*ssl_port*]            - Default IP Port for NGINX to listen with this SSL vHost on. Defaults to TCP 443
#   [*ssl_protocols*]       - SSL protocols enabled. Defaults to 'SSLv3 TLSv1 TLSv1.1 TLSv1.2'.
#   [*ssl_ciphers*]         - SSL ciphers enabled. Defaults to 'HIGH:!aNULL:!MD5'.
#   [*spdy*]                - Toggles SPDY protocol.
#   [*server_name*]         - List of vhostnames for which this vhost will respond. Default [$name].
#   [*www_root*]            - Specifies the location on disk for files to be read from. Cannot be set in conjunction with $proxy
#   [*rewrite_www_to_non_www*]  - Adds a server directive and rewrite rule to
#     rewrite www.domain.com to domain.com in order to avoid duplicate content (SEO);
#   [*try_files*]               - Specifies the locations for files to be
#     checked as an array. Cannot be used in conjuction with $proxy.
#   [*proxy_cache*]             - This directive sets name of zone for caching.
#     The same zone can be used in multiple places.
#   [*proxy_cache_valid*]       - This directive sets the time for caching
#     different replies.
#   [*auth_basic*]              - This directive includes testing name and
#      password with HTTP Basic Authentication.
#   [*auth_basic_user_file*]    - This directive sets the htpasswd filename for
#     the authentication realm.
#   [*vhost_cfg_append*]        - It expects a hash with custom directives to
#     put after everything else inside vhost
#   [*rewrite_to_https*]        - Adds a server directive and rewrite rule to
#      rewrite to ssl
#   [*include_files*]           - Adds include files to vhost
#
# Actions:
#
# Requires:
#
# Sample Usage:
#  nginx::resource::vhost { 'test2.local':
#    ensure   => present,
#    www_root => '/var/www/nginx-default',
#    ssl      => true,
#    ssl_cert => '/tmp/server.crt',
#    ssl_key  => '/tmp/server.pem',
#  }
define nginx::resource::vhost (
  $ensure                 = 'enable',
  $listen_ip              = '*',
  $listen_port            = '80',
  $listen_options         = undef,
  $ipv6_enable            = false,
  $ipv6_listen_ip         = '::',
  $ipv6_listen_port       = '80',
  $ipv6_listen_options    = 'default',
  $ssl                    = false,
  $ssl_cert               = undef,
  $ssl_key                = undef,
  $ssl_port               = '443',
  $ssl_protocols          = 'SSLv3 TLSv1 TLSv1.1 TLSv1.2',
  $ssl_ciphers            = 'HIGH:!aNULL:!MD5',
  $spdy                   = $nginx::params::nx_spdy,
  $proxy                  = undef,
  $proxy_read_timeout     = $nginx::params::nx_proxy_read_timeout,
  $proxy_set_header       = [],
  $proxy_cache            = false,
  $proxy_cache_valid      = false,
  $fastcgi                = undef,
  $fastcgi_params         = '/etc/nginx/fastcgi_params',
  $fastcgi_script         = undef,
  $index_files            = [
    'index.html',
    'index.htm',
    'index.php'],
  $server_name            = [$name],
  $www_root               = undef,
  $rewrite_www_to_non_www = false,
  $rewrite_to_https       = undef,
  $location_custom_cfg    = undef,
  $location_cfg_prepend   = undef,
  $location_cfg_append    = undef,
  $try_files              = undef,
  $auth_basic             = undef,
  $auth_basic_user_file   = undef,
  $vhost_cfg_append       = undef,
  $include_files          = undef
) {

  File {
    ensure => $ensure ? {
      'absent' => absent,
      default  => 'file',
    },
    notify => Class['nginx::service'],
    owner  => 'root',
    group  => 'root',
    mode   => '0644',
  }

  # Add IPv6 Logic Check - Nginx service will not start if ipv6 is enabled
  # and support does not exist for it in the kernel.
  if ($ipv6_enable == true) and (!$ipaddress6) {
    warning('nginx: IPv6 support is not enabled or configured properly')
  }

  # Check to see if SSL Certificates are properly defined.
  if ($ssl == true) {
    if ($ssl_cert == undef) or ($ssl_key == undef) {
      fail('nginx: SSL certificate/key (ssl_cert/ssl_cert) and/or SSL Private must be defined and exist on the target system(s)')
    }
  }

  # Use the File Fragment Pattern to construct the configuration files.
  # Create the base configuration file reference.
  if ($listen_port != $ssl_port) {
    file { "${nginx::config::nx_temp_dir}/nginx.d/${name}-001":
      ensure  => $ensure ? {
        'absent' => absent,
        default  => 'file',
      },
      content => template('nginx/vhost/vhost_header.erb'),
      notify  => Class['nginx::service'],
    }
  }

  if ($ssl == true) and ($ssl_port == $listen_port) {
    $ssl_only = true
  }

  # Create the default location reference for the vHost
  nginx::resource::location {"${name}-default":
    ensure               => $ensure,
    vhost                => $name,
    ssl                  => $ssl,
    ssl_only             => $ssl_only,
    location             => '/',
    proxy                => $proxy,
    proxy_read_timeout   => $proxy_read_timeout,
    proxy_cache          => $proxy_cache,
    proxy_cache_valid    => $proxy_cache_valid,
    fastcgi              => $fastcgi,
    fastcgi_params       => $fastcgi_params,
    fastcgi_script       => $fastcgi_script,
    try_files            => $try_files,
    www_root             => $www_root,
    index_files          => $index_files,
    location_custom_cfg  => $location_custom_cfg,
    notify               => Class['nginx::service'],
  }

  # Support location_cfg_prepend and location_cfg_append on default location created by vhost
  if $location_cfg_prepend {
    Nginx::Resource::Location["${name}-default"] {
      location_cfg_prepend => $location_cfg_prepend }
  }

  if $location_cfg_append {
    Nginx::Resource::Location["${name}-default"] {
      location_cfg_append => $location_cfg_append }
  }

  # Create a proper file close stub.
  if ($listen_port != $ssl_port) {
    file { "${nginx::config::nx_temp_dir}/nginx.d/${name}-699": content => template('nginx/vhost/vhost_footer.erb'), }
  }

  # Create SSL File Stubs if SSL is enabled
  if ($ssl == true) {
    file { "${nginx::config::nx_temp_dir}/nginx.d/${name}-700-ssl":
      ensure  => $ensure ? {
        'absent' => absent,
        default  => 'file',
      },
      content => template('nginx/vhost/vhost_ssl_header.erb'),
      notify  => Class['nginx::service'],
    }
    file { "${nginx::config::nx_temp_dir}/nginx.d/${name}-999-ssl":
      ensure  => $ensure ? {
        'absent' => absent,
        default  => 'file',
      },
      content => template('nginx/vhost/vhost_footer.erb'),
      notify  => Class['nginx::service'],
    }

    #Generate ssl key/cert with provided file-locations

    $cert = regsubst($name,' ','_')

    file { "${nginx::params::nx_conf_dir}/${cert}.crt":
      ensure => $ensure,
      mode   => '0644',
      source => $ssl_cert,
    }
    file { "${nginx::params::nx_conf_dir}/${cert}.key":
      ensure => $ensure,
      mode   => '0644',
      source => $ssl_key,
    }
  }
}