#!/usr/bin/perl
#
# Routino data visualiser CGI
#
# Part of the Routino routing software.
#
# This file Copyright 2008-2010 Andrew M. Bishop
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

# Use the directory paths script
require "paths.pl";

# Use the perl CGI module
use CGI ':cgi';

# Create the query and get the parameters

$query=new CGI;

@rawparams=$query->param;

# Legal CGI parameters with regexp validity check

%legalparams=(
              "latmin" => "[-0-9.]+",
              "latmax" => "[-0-9.]+",
              "lonmin" => "[-0-9.]+",
              "lonmax" => "[-0-9.]+",
              "data"   => "(junctions|super|oneway|speed|weight|height|width|length)"
             );

# Validate the CGI parameters, ignore invalid ones

foreach $key (@rawparams)
  {
   foreach $test (keys (%legalparams))
     {
      if($key =~ m%^$test$%)
        {
         $value=$query->param($key);

         if($value =~ m%^$legalparams{$test}$%)
           {
            $cgiparams{$key}=$value;
            last;
           }
        }
     }
  }

# Parameters to limit range selected

%limits=(
         "junctions" => 0.1,
         "speed"     => 0.2,
         "super"     => 0.2,
         "oneway"    => 0.2,
         "weight"    => 0.3,
         "height"    => 0.3,
         "width"     => 0.3,
         "length"    => 0.3
        );

# Check the parameters

$latmin=$cgiparams{"latmin"};
$latmax=$cgiparams{"latmax"};
$lonmin=$cgiparams{"lonmin"};
$lonmax=$cgiparams{"lonmax"};
$data  =$cgiparams{"data"};

if($latmin eq "" || $latmax eq "" || $lonmin eq "" || $lonmax eq "" || $data eq "")
  {
   print header(-status => '500 Invalid CGI parameters');
   exit;
  }

if(($latmax-$latmin)>$limits{$data} || ($lonmax-$lonmin)>$limits{$data})
  {
   print header(-status => '500 Selected area too large');
   exit;
  }

# Print the output

print header('text/plain');

print "$latmin $lonmin $latmax $lonmax\n";

# Run the filedumper

$params.=" --dir=$data_dir" if($data_dir);
$params.=" --prefix=$data_prefix" if($data_prefix);
$params.=" --visualiser --data=$data";
$params.=" --latmin=$latmin --latmax=$latmax --lonmin=$lonmin --lonmax=$lonmax";

system "$bin_dir/$filedumper_exe $params 2>&1";