NAME
    Sub::Spec::To::HTML - Generate HTML documentation from sub spec

VERSION
    version 0.00

SYNOPSIS
     use Sub::Spec::To::HTML qw(spec_to_html);
     my $html = spec_to_html(spec => $spec,
                             # other options
                            );

DESCRIPTION
    EARLY RELEASE. NO IMPLEMENTATION YET!

    This module can generate HTML document from sub spec.

    This module uses Log::Any logging framework.

        $pod .= "=head2 $sub_spec->{name}(\%args) -> ".
            ($naked ? "RESULT" : "[STATUS_CODE, ERR_MSG, RESULT]")."\n\n";

        if ($sub_spec->{summary}) {
            $pod .= "$sub_spec->{summary}.\n\n";
        }

        my $desc = $sub_spec->{description};
        if ($desc) {
            $desc =~ s/^\n+//; $desc =~ s/\n+$//;
            $pod .= "$desc\n\n";
        }

        if ($naked) {

        } else {
            $pod .= <<'_';
    Returns a 3-element arrayref. STATUS_CODE is 200 on success, or an error code
    between 3xx-5xx (just like in HTTP). ERR_MSG is a string containing error
    message, RESULT is the actual result.

    _ }

        my $features = $sub_spec->{features} // {};
        if ($features->{reverse}) {
            $pod .= <<'_';
    This function supports reverse operation. To reverse, add argument C<-reverse>
    => 1.

    _ } if ($features->{undo}) { $pod .= <<'_'; This function supports undo
    operation. See Sub::Spec::Clause::features for details on how to perform
    do/undo/redo.

    _ } if ($features->{dry_run}) { $pod .= <<'_'; This function supports
    dry-run (simulation) mode. To run in dry-run mode, add argument
    "-dry_run" => 1.

    _ } if ($features->{pure}) { $pod .= <<'_'; This function is declared as
    pure, meaning it does not change any external state or have any side
    effects.

    _ }

        my $args  = $sub_spec->{args} // {};
        $args = { map {$_ => _parse_schema($args->{$_})} keys %$args };
        my $has_cat = grep { $_->{clause_sets}[0]{arg_category} }
            values %$args;

        if (scalar keys %$args) {
            my $noted_star_req;
            my $prev_cat;
            for my $name (sort {
                (($args->{$a}{clause_sets}[0]{arg_category} // "") cmp
                     ($args->{$b}{clause_sets}[0]{arg_category} // "")) ||
                         (($args->{$a}{clause_sets}[0]{arg_pos} // 9999) <=>
                              ($args->{$b}{clause_sets}[0]{arg_pos} // 9999)) ||
                                  ($a cmp $b) } keys %$args) {
                my $arg = $args->{$name};
                my $ah0 = $arg->{clause_sets}[0];

                my $cat = $ah0->{arg_category} // "";
                if (!defined($prev_cat) || $prev_cat ne $cat) {
                    $pod .= "=back\n\n" if defined($prev_cat);
                    $pod .= ($cat ? ucfirst("$cat arguments") :
                                 ($has_cat ? "General arguments":"Arguments"));
                    $pod .= " (C<*> denotes required arguments)"
                        unless $noted_star_req++;
                    $pod .= ":\n\n=over 4\n\n";
                    $prev_cat = $cat;
                }

                $pod .= "=item * B<$name>".($ah0->{required} ? "*" : "")." => ";
                my $type;
                if ($arg->{type} eq 'any') {
                    my @schemas = map {_parse_schema($_)} @{$ah0->{of}};
                    my @types   = map {$_->{type}} @schemas;
                    @types      = sort List::MoreUtils::uniq(@types);
                    $type       = join("|", @types);
                } else {
                    $type       = $arg->{type};
                }
                $pod .= "I<$type>";
                $pod .= " (default ".
                    (defined($ah0->{default}) ?
                         "C<".Data::Dump::Partial::dumpp($ah0->{default}).">"
                             : "none").
                                 ")"
                                   if defined($ah0->{default});
                $pod .= "\n\n";

                my $aliases = $ah0->{arg_aliases};
                if ($aliases && keys %$aliases) {
                    $pod .= "Aliases: ";
                    my $i = 0;
                    for my $al (sort keys %$aliases) {
                        $pod .= ", " if $i++;
                        my $alinfo = $aliases->{$al};
                        $pod .= "B<$al>".
                            ($alinfo->{summary} ? " ($alinfo->{summary})" : "");
                    }
                    $pod .= "\n\n";
                }

                $pod .= "Value must be one of:\n\n".
                    join("", map {" $_\n"} split /\n/,
                         Data::Dump::dump($ah0->{in}))."\n\n"
                               if defined($ah0->{in});

                #my $o = $ah0->{arg_pos};
                #my $g = $ah0->{arg_greedy};

                $pod .= "$ah0->{summary}.\n\n" if $ah0->{summary};

                my $desc = $ah0->{description};
                if ($desc) {
                    $desc =~ s/^\n+//; $desc =~ s/\n+$//;
                    # XXX format/rewrap
                    $pod .= "$desc\n\n";
                }
            }
            $pod .= "=back\n\n";

        } else {

            $pod .= "No known arguments at this time.\n\n";

        }

FUNCTIONS
    None of the functions are exported by default, but they are exportable.

  spec_to_html(%args) -> RESULT
    Generate HTML documentation from sub spec.

    Arguments ("*" denotes required arguments):

    *   spec* => *hash*

SEE ALSO
    Sub::Spec

    Other Sub::Spec::To::* modules.

AUTHOR
    Steven Haryanto <stevenharyanto@gmail.com>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2011 by Steven Haryanto.

    This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.