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package RT::Interface::Web::Request;

use strict;
use warnings;

our $VERSION = '0.30';
use HTML::Mason::PSGIHandler;
use base qw(HTML::Mason::Request::PSGI);
use Params::Validate qw(:all);

sub new {
    my $class = shift;
    $class->valid_params( %{ $class->valid_params },cgi_request => { type => OBJECT, optional => 1 } );
    return $class->SUPER::new(@_);
}


=head2 callback

Method replaces deprecated component C<Element/Callback>.

Takes hash with optional C<CallbackPage>, C<CallbackName>
and C<CallbackOnce> arguments, other arguments are passed
throught to callback components.

=over 4

=item CallbackPage

Page path relative to the root, leading slash is mandatory.
By default is equal to path of the caller component.

=item CallbackName

Name of the callback. C<Default> is used unless specified.

=item CallbackOnce

By default is false, otherwise runs callbacks only once per
process of the server. Such callbacks can be used to fill
structures.

=back

Searches for callback components in
F<< /Callbacks/<any dir>/CallbackPage/CallbackName >>, for
example F</Callbacks/MyExtension/autohandler/Default> would
be called as default callback for F</autohandler>.

=cut

{
my %cache = ();
my %called = ();
sub callback {
    my ($self, %args) = @_;

    my $name = delete $args{'CallbackName'} || 'Default';
    my $page = delete $args{'CallbackPage'} || $self->callers(0)->path;
    unless ( $page ) {
        $RT::Logger->error("Couldn't get a page name for callbacks");
        return;
    }

    my $CacheKey = "$page--$name";
    return 1 if delete $args{'CallbackOnce'} && $called{ $CacheKey };
    $called{ $CacheKey } = 1;

    my $callbacks = $cache{ $CacheKey };
    unless ( $callbacks ) {
        $callbacks = [];
        my $path  = "/Callbacks/*$page/$name";
        my @roots = RT::Interface::Web->ComponentRoots;
        my %seen;
        @$callbacks = (
            grep defined && length,
            # Skip backup files, files without a leading package name,
            # and files we've already seen
            grep !$seen{$_}++ && !m{/\.} && !m{~$} && m{^/Callbacks/[^/]+\Q$page/$name\E$},
            map { sort $self->interp->resolver->glob_path($path, $_) }
            @roots
        );
        foreach my $comp (keys %seen) {
            next unless $seen{$comp} > 1;
            $RT::Logger->error("Found more than one occurrence of the $comp callback.  This may cause only one of the callbacks to run.  Look for the duplicate Callback in your @roots");
        }

        $cache{ $CacheKey } = $callbacks unless RT->Config->Get('DevelMode');
    }

    my @rv;
    foreach my $cb ( @$callbacks ) {
        push @rv, scalar $self->comp( $cb, %args );
    }
    return @rv;
}
}

=head2 request_path

Returns path of the request.

Very close to C<< $m->request_comp->path >>, but if called in a dhandler returns
path of the request without dhandler name, but with dhandler arguments instead.

=cut

sub request_path {
    my $self = shift;

    my $path = $self->request_comp->path;
    # disabled dhandlers, not RT case, but anyway
    return $path unless my $dh_name = $self->dhandler_name;
    # not a dhandler
    return $path unless substr($path, -length("/$dh_name")) eq "/$dh_name";
    substr($path, -length $dh_name) = $self->dhandler_arg;
    return $path;
}

1;
