# define: nginx::resource::location
#
# This definition creates a new location entry within a virtual host
#
# Parameters:
#   [*ensure*]               - Enables or disables the specified location (present|absent)
#   [*vhost*]                - Defines the default vHost for this location entry to include with
#   [*location*]             - Specifies the URI associated with this location entry
#   [*location_allow*]      - Array: Locations to allow connections from.
#   [*location_deny*]       - Array: Locations to deny connections from.
#   [*www_root*]             - Specifies the location on disk for files to be read from. Cannot be set in conjunction with $proxy
#   [*index_files*]          - Default index files for NGINX to read when traversing a directory
#   [*proxy*]                - Proxy server(s) for a 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
#   [*fastcgi_split_path*]   - Allows settings of fastcgi_split_path_info so that you can split the script_name and path_info via regex
#   [*ssl*]                  - Indicates whether to setup SSL bindings for this location.
#   [*ssl_only*]             - Required if the SSL and normal vHost have the same port.
#   [*location_alias*]       - Path to be used as basis for serving requests for this location
#   [*stub_status*]          - If true it will point configure module stub_status to provide nginx stats on location
#   [*location_custom_cfg*]  - Expects a hash with custom directives, cannot be used with other location types (proxy, fastcgi, root, or stub_status)
#   [*location_cfg_prepend*] - Expects a hash with extra directives to put before anything else inside location (used with all other types except custom_cfg)
#   [*location_cfg_append*]  - Expects a hash with extra directives to put after everything else inside location (used with all other types except custom_cfg)
#   [*try_files*]            - An array of file locations to try
#   [*option*]               - Reserved for future use
#   [*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.
#   [*priority*]              - Location priority. Default: 500. User priority
#     400-499, 501-599. If the priority is higher than the default priority,
#     the location will be defined after root, or before root.
#
#
# Actions:
#
# Requires:
#
# Sample Usage:
#  nginx::resource::location { 'test2.local-bob':
#    ensure   => present,
#    www_root => '/var/www/bob',
#    location => '/bob',
#    vhost    => 'test2.local',
#  }
#
#  Custom config example to limit location on localhost,
#  create a hash with any extra custom config you want.
#  $my_config = {
#    'access_log' => 'off',
#    'allow'      => '127.0.0.1',
#    'deny'       => 'all'
#  }
#  nginx::resource::location { 'test2.local-bob':
#    ensure              => present,
#    www_root            => '/var/www/bob',
#    location            => '/bob',
#    vhost               => 'test2.local',
#    location_cfg_append => $my_config,
#  }

define nginx::resource::location (
  $location,
  $ensure               = present,
  $vhost                = undef,
  $www_root             = undef,
  $index_files          = [
    'index.html',
    'index.htm',
    'index.php'],
  $proxy                = undef,
  $proxy_read_timeout   = $nginx::params::nx_proxy_read_timeout,
  $fastcgi              = undef,
  $fastcgi_params       = '/etc/nginx/fastcgi_params',
  $fastcgi_script       = undef,
  $fastcgi_split_path   = undef,
  $ssl                  = false,
  $ssl_only             = false,
  $location_alias       = undef,
  $location_allow       = undef,
  $location_deny        = undef,
  $option               = undef,
  $stub_status          = undef,
  $location_custom_cfg  = undef,
  $location_cfg_prepend = undef,
  $location_cfg_append  = undef,
  $try_files            = undef,
  $proxy_cache          = false,
  $proxy_cache_valid    = false,
  $auth_basic           = undef,
  $auth_basic_user_file = undef,
  $priority             = 500
) {
  File {
    owner  => 'root',
    group  => 'root',
    mode   => '0644',
    notify => Class['nginx::service'],
  }

  # # Shared Variables
  $ensure_real = $ensure ? {
    'absent' => absent,
    default  => file,
  }

  ## Check for various error conditions
  if ($vhost == undef) {
    fail('Cannot create a location reference without attaching to a virtual host')
  }
  if (($www_root == undef) and ($proxy == undef) and ($location_alias == undef) and ($stub_status == undef) and ($fastcgi == undef) and ($location_custom_cfg == undef)) {
    fail('Cannot create a location reference without a www_root, proxy, location_alias, fastcgi, stub_status, or location_custom_cfg defined')
  }
  if (($www_root != undef) and ($proxy != undef)) {
    fail('Cannot define both directory and proxy in a virtual host')
  }

  # Use proxy or fastcgi template if $proxy is defined, otherwise use directory template.
  if ($proxy != undef) {
    $content_real = template('nginx/vhost/vhost_location_proxy.erb')
  } elsif ($location_alias != undef) {
    $content_real = template('nginx/vhost/vhost_location_alias.erb')
  } elsif ($stub_status != undef) {
    $content_real = template('nginx/vhost/vhost_location_stub_status.erb')
  } elsif ($fastcgi != undef) {
    $content_real = template('nginx/vhost/vhost_location_fastcgi.erb')
  } elsif ($www_root != undef) {
    $content_real = template('nginx/vhost/vhost_location_directory.erb')
  } else {
    $content_real = template('nginx/vhost/vhost_location_empty.erb')
  }

  if $fastcgi != undef and !defined(File['/etc/nginx/fastcgi_params']) { 
    file { '/etc/nginx/fastcgi_params':
      ensure  => present,
      mode    => '0770',
      content => template('nginx/vhost/fastcgi_params.erb'),
    }
  }

  ## Create stubs for vHost File Fragment Pattern
  if ($ssl_only != true) {
    file {"${nginx::config::nx_temp_dir}/nginx.d/${vhost}-${priority}-${name}":
      ensure  => $ensure_real,
      content => $content_real,
    }
  }

  ## Only create SSL Specific locations if $ssl is true.
  if ($ssl == true) {
    $ssl_priority = $priority + 300
    file {"${nginx::config::nx_temp_dir}/nginx.d/${vhost}-${ssl_priority}-${name}-ssl":
      ensure  => $ensure_real,
      content => $content_real,
    }
  }

  if ($auth_basic_user_file != undef) {
    #Generate htpasswd with provided file-locations
    file { "${nginx::params::nx_conf_dir}/${name}_htpasswd":
      ensure => $ensure,
      mode   => '0644',
      source => $auth_basic_user_file,
    }
  }
}