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package JWebmail::Plugin::RenderMail;
use Mojo::Base 'Mojolicious::Plugin';
use Mojo::ByteStream;
use Mojo::Util 'xml_escape';
sub render_text_plain {
my ($_c, $_subtype, $content, $_path) = @_;
$content = xml_escape($content);
$content =~ s/\n/<br>/g;
return qq'<div class="jwm-mail-body jwm-mail-body-text-plain">\n $content </div>\n';
}
sub render_text_html {
my ($c, $_subtype, $_content, $path) = @_;
my $url = $c->url_for('raw', id => $c->stash('id'));
$url = $url->query(path => join('.', @$path)) if @$path;
return qq'<iframe src="$url" class="jwm-mail-body-text-html" ></iframe>\n';
}
sub render_multipart_alternative {
my ($c, $_subtype, $content, $path) = @_;
my $parts = $content->{parts};
my $R = qq'<div class="jwm-mail-body jwm-mail-body-multipart-alternative"\n>';
my $i = 0;
my $end;
for (reverse @$parts) {
if (!$end) {
my $x = mime_render($c, to_mime_types($_->{head}), $_->{body}, [@$path, $#$parts-$i]);
if ($x) {
$R .= $x;
$end = 1;
}
}
else {
$R .= '<details class="jwm-mail-body-multipart-alternative-extra" >';
$R .= '<summary>';
$R .= to_mime_type($_->{head});
$R .= "</summary>\n";
$R .= mime_render($c, to_mime_types($_->{head}), $_->{body}, [@$path, $#$parts-$i]);
$R .= "</details>\n";
}
++$i;
}
return $R . "</div>\n";
}
sub render_multipart {
my ($c, $_subtype, $content, $path) = @_;
my $parts = $content->{parts};
my $R = qq'<div class="jwm-mail-body jwm-mail-body-multipart"\n>';
my $i = 0;
for (@$parts) {
if ( !$_->{head}{content_disposition}
|| lc $_->{head}{content_disposition} eq 'none'
|| lc $_->{head}{content_disposition} eq 'inline') {
$R .= mime_render($c, to_mime_types($_->{head}), $_->{body}, [@$path, $i]);
}
elsif (lc $_->{head}{content_disposition} eq 'attachment') {
$R .= '<p>';
$R .= $c->link_to($c->url_for(raw => id => $c->stash('id'))->query(path => join('.', @$path, $i)), (download => $_->{head}{filename}) => sub {
'Attachment ' . xml_escape($_->{head}{filename}) . ' of type ' . to_mime_type($_->{head});
});
$R .= "</p>\n";
}
else {
warn "unknown Content-Disposition '$_->{head}{content_disposition}'";
$R .= "<p>unknown Content-Disposition '$_->{head}{content_disposition}'</p>\n";
}
++$i;
}
return $R . "</div>\n";
}
sub _format_header {
my ($c, $category, $value) = @_;
my $R = '';
if (ref $value eq 'ARRAY' && $value->@*) {
$R .= '<dt>' . xml_escape(uc $c->l($category)) . "</dt>\n";
for ($value->@*) {
$R .= '<dd>';
$R .= xml_escape($_->{display_name} ? qq("$_->{display_name}" <$_->{address}>) : "$_->{address}");
$R .= "<dd>\n";
}
}
return $R;
}
sub render_message {
my ($c, $subtype, $msg, $path) = @_;
warn "unkown mime-subtype $subtype" unless $subtype eq 'rfc822';
my $R .= '<div clas="jwm-mail">';
$R .= '<dl class="jwm-mail-header">';
$R .= '<dt>' . xml_escape(uc $c->l('subject')) . '</dt>';
$R .= '<dd>' . xml_escape($msg->{head}{subject}) . "</dd>\n";
$R .= _format_header($c, from => $msg->{head}{from});
$R .= _format_header($c, to => $msg->{head}{to});
$R .= _format_header($c, cc => $msg->{head}{cc});
$R .= _format_header($c, bcc => $msg->{head}{bcc});
$R .= '<dt>' . xml_escape(uc $c->l('date')) . '</dt>';
$R .= '<dd>' . xml_escape($msg->{head}{date}) . "</dd>\n";
$R .= '<dt>' . xml_escape(uc $c->l('content-type')) . '</dt>';
$R .= '<dd>' . to_mime_type($msg->{head}{mime}) . "</dd>\n";
$R .= "</dl>\n";
#my $content = ref $msg->{body} && exists $msg->{body}{parts} ? $msg->{body}{parts} : $msg->{body};
$R .= mime_render($c, to_mime_types($msg->{head}{mime}), $msg->{body}, [@$path, 0]);
return $R . "</div>\n";
}
our %MIME_Render_Subs = (
'text/plain' => \&render_text_plain,
'text/html' => \&render_text_html,
'multipart/alternative' => \&render_multipart_alternative,
'multipart' => \&render_multipart,
'message' => \&render_message,
);
sub mime_render {
my ($c, $maintype, $subtype, $content, $path) = @_;
my $renderer = $MIME_Render_Subs{"$maintype/$subtype"} || $MIME_Render_Subs{$maintype};
unless ($renderer) {
return "<p>Unsupported MIME type of <code>$maintype/$subtype</code>.</p>\n";
}
return $renderer->($c, $subtype, $content, $path);
}
sub to_mime_type { lc xml_escape("$_[0]->{content_maintype}/$_[0]->{content_subtype}") }
sub to_mime_types { return xml_escape($_[0]->{content_maintype}), xml_escape($_[0]->{content_subtype}) }
sub register {
my ($self, $app, $conf) = @_;
$conf //= {};
$app->helper('render_mail.format_mail' => sub { Mojo::ByteStream->new(mime_render($_[0], 'message', 'rfc822', $_[1], [])) });
$app->helper(to_mime_type => sub { shift; to_mime_type(@_) });
}
1
__END__
=encoding utf-8
=head1 NAME
JWebmail::Plugin::RenderMail - Does the heavy lifting of converting an E-Mail to HTML
=head1 HELPERS
=head2 render_mail.format_mail
Renders a mail to html recursively.
=head2 to_mime_type
Combines the content_maintype and content_subtype attributes into the regular MIME description.
These attributes are found in a mail head mime section or as head for multipart messages.
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