%# BEGIN BPS TAGGED BLOCK {{{
%#
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%#                                          <sales@bestpractical.com>
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%#
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%# LICENSE:
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%# WITHOUT ANY WARRANTY; without even the implied warranty of
%# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
%# General Public License for more details.
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%# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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<& /Admin/Elements/Header,
    Title => loc("Theme"),
&>
<& /Elements/Tabs &>
<& /Elements/ListActions, actions => \@results &>

<script type="text/javascript" src="<%RT->Config->Get('WebPath')%>/NoAuth/js/farbtastic.js"></script>

<div id="simple-customize">
<div id="upload-logo">
  <h2>Logo</h2>
  <& /Elements/Logo, id => 'logo-theme-editor', ShowName => 0 &>
  <form method="POST" enctype="multipart/form-data">
    <label for="logo-upload"><&|/l&>Upload a new logo</&>:</label>
    <input type="file" name="logo-upload" id="logo-upload" /><br />
    <div class="gd-support">
% if (%gd_can) {
    <&|/l, $valid_image_types &>Your system supports automatic color suggestions for: [_1]</&>
% } else {
    <&|/l&>GD is disabled or not installed. You can upload an image, but you won't get automatic color suggestions.</&>
% }
    </div>
    <input name="reset_logo" value="Reset to default RT Logo" type="submit" />
    <input type="submit" value="Upload" />
  </form>
</div>

<div id="customize-theme">
  <h2>Customize the RT theme</h2>
  <ol>
    <li>
      <label for="section"><&|/l&>Select a section</&>:</label>
      <select id="section"></select>
    </li>
    <li>
      <div class="description"><&|/l&>Select a color for the section</&>:</div>
% if ($colors) {
<div class="primary-colors">
%   for (@$colors) {
%     my $fg = $_->{l} >= $text_threshold ? 'black' : 'white';
<button type="button" class="color-template"
        style="background-color: rgb(<% $_->{c} %>); color: <% $fg %>;">
  <&|/l&>Text</&>
</button>
%   }
</div>
% }
      <div id="color-picker"></div>
    </li>
  </ol>
</div>
</div>

<div id="custom-css">
  <h2>Custom CSS (Advanced)</h2>
  
  <form method="POST">
    <textarea rows=20 id="user_css" name="user_css" wrap="off"><% $user_css %></textarea><br />
    <input id="try" type="button" class="button" value="Try" />
    <input id="reset" type="reset" value="Reset" type="submit" />
    <input name="reset_css" value="Reset to default RT Theme" type="submit" />
    <input value="Save" type="submit" />
  </form>
</div>

<%ONCE>
my @sections = (
    ['Page'         => ['body']],
    ['Header'       => ['div#quickbar', 'body.aileron #main-navigation #app-nav > li, body.aileron #main-navigation #app-nav > li > a, #prefs-menu > li, #prefs-menu > li > a, #logo .rtname']],
    ['Page title'   => ['div#header h1']],
    ['Page content' => ['div#body']],
    ['Buttons'      => ['input[type="reset"], input[type="submit"], input[class="button"]']],
    ['Button hover' => ['input[type="reset"]:hover, input[type="submit"]:hover, input[class="button"]:hover']],
);
</%ONCE>
<script type="text/javascript">
var section_css_mapping = <% JSON(\@sections) |n%>;

jQuery(function($) {

    jQuery.each(section_css_mapping, function(i,v){
        $('select#section').append($("<option/>")
                           .attr('value', v[0])
                           .text(v[0]));
    });

    function update_sitecss(text) {
        if (!text)
            text = $('#user_css').val();

        // IE 8 doesn't let us update the innerHTML of <style> tags (with jQuery.text())
        // see: http://stackoverflow.com/questions/2692770/style-style-textcss-appendtohead-does-not-work-in-ie/2692861#2692861
        $("style#sitecss").remove();
        $("<style id='sitecss' type='text/css' media='all'>" + text + "</style>").appendTo('head');
    }

    update_sitecss();
    $('#try').click(function() {
        update_sitecss();
    });

    $('#reset').click(function() {
        setTimeout(function() {
            update_sitecss();
        }, 1000);
    });

    function change_color(bg, fg) {
      var section = $('select#section').val();

      var applying = jQuery.grep(section_css_mapping, function(a){ return a[0] == section })[0][1];
      var css = $('#user_css').val();
      if (applying) {
          var specials = new RegExp("([.*+?|()\\[\\]{}\\\\])", "g");
          for (var name in applying) {
              var selector = (applying[name]).replace(specials, "\\$1");
              var rule = new RegExp('^'+selector+'\\s*\{.*?\}', "m");
              var newcss = "background: " + bg;

              /* Don't set the text color on <body> as it affects too much */
              if (applying[name] != "body")
                  newcss += "; color: " + fg;

              /* Kill the border on the quickbar if we're styling it */
              if (applying[name].match(/quickbar/))
                  newcss += "; border: none;"

              /* Page title's text color is the selected color */
              if (applying[name].match(/#header/))
                  newcss = "color: " + bg;

              /* Nav doesn't need a background, but it wants text color */
              if (applying[name].match(/#main-navigation/))
                  newcss = "color: " + fg;

              css = css.replace(rule, applying[name]+" { "+newcss+" }");
          }
      }
      $('#user_css').val(css);
      update_sitecss(css);
    }

    $('#color-picker').farbtastic(function(color){ change_color(color, this.hsl[2] > <% $text_threshold %> ? '#000' : '#fff') });

    $('button.color-template').click(function() {
      change_color($(this).css('background-color'), $(this).css('color'));
  });


});
</script>
<%INIT>
unless ($session{'CurrentUser'}->HasRight( Object=> RT->System, Right => 'SuperUser')) {
    Abort(loc('This feature is only available to system administrators.'));
}

use Digest::MD5 'md5_hex';

my $text_threshold = 0.6;
my @results;
my $imgdata;

if (my $file_hash = _UploadedFile( 'logo-upload' )) {
    my ($id, $msg) = RT->System->SetAttribute( Name => "UserLogo",
                                                Description => "User-provided logo",
                                                Content => {
                                                    type => $file_hash->{ContentType},
                                                    data => $file_hash->{LargeContent},
                                                    hash => md5_hex($file_hash->{LargeContent}),
                                                } );
    push @results, loc("Unable to set UserLogo: [_1]", $msg) unless $id;

    $imgdata = $file_hash->{LargeContent};
}
elsif ($ARGS{'reset_logo'}) {
    RT->System->DeleteAttribute('UserLogo');
}
else {
    if (my $attr = RT->System->FirstAttribute('UserLogo')) {
        my $content = $attr->Content;
        if (ref($content) eq 'HASH') {
            $imgdata = $content->{data};
        }
        else {
            RT->System->DeleteAttribute('UserLogo');
        }
    }
}

if ($user_css) {
    if ($ARGS{'reset_css'}) {
        RT->System->DeleteAttribute('UserCSS');
        undef $user_css;
    }
    else {
        my ($id, $msg) = RT->System->SetAttribute( Name => "UserCSS",
                                                    Description => "User-provided css",
                                                    Content => $user_css );
        push @results, loc("Unable to set UserCSS: [_1]", $msg) unless $id;
    }
}

if (!$user_css) {
    my $attr = RT->System->FirstAttribute('UserCSS');
    $user_css = $attr ? $attr->Content : join(
        "\n\n" => map {
            join "\n" => "/* ". $_->[0] ." */",
                         map { "$_ {}" } @{$_->[1]}
        } @sections
    );
}

# XXX: move this to some other modules

use List::MoreUtils qw(uniq);

my $has_color_analyzer = eval { require Convert::Color; 1 };
my $colors;
my %gd_can;
my $valid_image_types;

if (not RT->Config->Get('DisableGD') and $has_color_analyzer) {
    require GD;

    # Always find out what GD can read...
    for my $type (qw(Png Jpeg Gif)) {
        $gd_can{$type}++ if GD::Image->can("newFrom${type}Data");
    }
    $valid_image_types = join(", ", map { uc } sort { lc $a cmp lc $b } keys %gd_can);

    # ...but only analyze the image if we have data
    if ($imgdata) {
        if ( my $img = GD::Image->new($imgdata) ) {
            $colors = analyze_img($img);
        }
        else {
            # This has to be one damn long line because the loc() needs to be
            # source parsed correctly.
            push @results, loc("Automatically suggested theme colors aren't available for your image. This might be because you uploaded an image type that your installed version of GD doesn't support. Supported types are: [_1]. You can recompile libgd and GD.pm to include support for other image types.", $valid_image_types);
        }
    }
}

sub analyze_img {
    my $img = shift;
    my $color;

    for my $i (0..$img->width-1) {
        for my $j (0..$img->height-1) {
            my @color = $img->rgb( $img->getPixel($i,$j) );
            my $hsl = Convert::Color->new('rgb:'.join(',',map { $_ / 255 } @color))->convert_to('hsl');
            my $c = join(',',@color);
            next if $hsl->lightness < 0.1;
            $color->{$c} ||= { h => $hsl->hue, s => $hsl->saturation, l => $hsl->lightness, cnt => 0, c => $c};
            $color->{$c}->{cnt}++;
        }
    }

    for (values %$color) {
        $_->{rank} = $_->{s} * $_->{cnt};
    }
    my @top5 = grep { defined and $_->{'l'} and $_->{'c'} }
                    (sort { $b->{rank} <=> $a->{rank} } values %$color)[0..5];
    if ((scalar uniq map {$_->{rank}} @top5) == 1) {
        warn "bad";
    }
    return \@top5;
}
</%INIT>
<%ARGS>
$user_css => ''
</%ARGS>