#!/usr/bin/perl

use strict;
use warnings;
no warnings 'redefine';
use utf8;
use Data::Dumper;

use params();
use config();
use entry();
use log();
use template();
use auth();
use uac();
use images();
use localization();

binmode STDOUT, ":utf8";

my $r = shift;
( my $cgi, my $params, my $error ) = params::get($r);

my $config = config::get('../config/config.cgi');
my ( $user, $expires ) = auth::get_user( $config, $params, $cgi );
return if ( ( !defined $user ) || ( $user eq '' ) );

my $user_presets = uac::get_user_presets(
    $config,
    {
        project_id => $params->{project_id},
        studio_id  => $params->{studio_id},
        user       => $user
    }
);
$params->{default_studio_id} = $user_presets->{studio_id};
$params = uac::setDefaultStudio( $params, $user_presets );
$params = uac::setDefaultProject( $params, $user_presets );

my $request = {
    url => $ENV{QUERY_STRING} || '',
    params => {
        original => $params,
        checked  => check_params( $config, $params ),
    },
};
$request = uac::prepare_request( $request, $user_presets );
$params = $request->{params}->{checked};

#process header

return unless uac::check( $config, $params, $user_presets ) == 1;
showImage( $config, $request );

#TODO: filter by published, draft
sub showImage {
    my $config  = shift;
    my $request = shift;

    my $params      = $request->{params}->{checked};
    my $permissions = $request->{permissions};

    unless ( $permissions->{read_event} == 1 ) {
        uac::permissions_denied('read_image');
        return;
    }

    unless ( defined $params->{filename} ) {
        uac::permissions_denied('missing filename');
        return;
    }

    my $filename = images::getInternalPath( $config, $params );
    unless ( defined $filename ) {
        uac::permissions_denied("could not find path");
        return;
    }

    unless ( -e $filename ) {
        uac::permissions_denied("read $filename");
        return;
    }

    my $image = images::readFile($filename);
    if ( defined $image->{error} ) {
        uac::permissions_denied("read $filename, $image->{error}");
        return;
    }

    binmode STDOUT;
    print "Content-type:image/jpeg; charset=UTF-8;\n\n";
    print $image->{content};
    return;
}

sub check_params {
    my $config = shift;
    my $params = shift;

    my $checked = {};

    for my $param ('filename') {
        if ( ( defined $params->{$param} ) && ( $params->{$param} =~ /^[A-Za-z\_\-\.\d\/]+$/ ) ) {
            $checked->{$param} = $params->{$param};
            $checked->{$param} =~ s/^.*\///g;
        }
    }

    $checked->{type} = 'thumbs';
    for my $param ('type') {
        if ( ( defined $params->{$param} ) && ( $params->{$param} =~ /^(thumbs|images|icons)$/ ) ) {
            $checked->{$param} = $params->{$param};
        }
    }

    entry::set_numbers( $checked, $params, [
        'project_id', 'studio_id', 'series_id', 'event_id'
    ]);

    if ( defined $checked->{studio_id} ) {
        $checked->{default_studio_id} = $checked->{studio_id};
    } else {
        $checked->{studio_id} = -1;
    }

    return $checked;
}

