package MyApp;
use strict;
use base 'CGI::Application';
use CGI::Application::Plugin::AutoRunmode;
use CGI::Application::Plugin::Config::Simple;
use CGI::Application::Plugin::DBH (qw/dbh_config dbh/);
use CGI::Application::Plugin::Session;
sub cgiapp_init {
    my ($self, %params) = @_;
    # -- config
    $self->config_file($params{-config_file});
    $self->dbh_config(
         $self->config_param('dsn')
        ,$self->config_param('user')
        ,$self->config_param('password')
    );
    # -- session
    $self->session_config(
        CGI_SESSION_OPTIONS => [ 
           $self->config_param('cgi_session_dsn')
          ,$self->query
          ,{Handle=>$self->dbh} 
        ],
        DEFAULT_EXPIRY      => '+31d',  # should this match -expires below?  TBD
        COOKIE_PARAMS       => {
              -expires => '+31d'
             ,-path    => $self->config_param('cookie_path')
        }
    );
}
sub terminate {
   my $self = shift;
   $self->session->flush if $self->session_loaded;
   # CGI::Sesssion documentation says "auto-flushing can be unreliable.
   # ...regard it as mandatory that sessions always need to be explicitly 
   # flushed before the program exits... sub teardown() would be the 
   # appropriate place to do this.
}
sub display_form : StartRunmode {
   my $self = shift;
   my $q = $self->query;
   my $session_data = $self->session->param('stuff') || 1;
   my $result = $q->start_html(-title => 'Client Login')
      . $q->start_form
      . 'First Name: ' . $q->textfield(-name=>'firstName')
      . $q->br . $q->submit
      . $q->hidden(-name =>'rm', -value => 'page_2')
      . $q->end_form
      . $q->br . $session_data
      . $q->end_html
   ;
   $session_data++;  # reload the page to see the value change above
   $self->session->param(stuff=>$session_data);
   return $result;
}