#!/usr/bin/perl -w

=pod

=NAME

generate_web_pages.pl - generate the web pages for the install site

=SYNOPSIS

Yeah, it does that.

Basically, there's a few comments in shell.hemp that we replace with
    what we really want in the files. Pretty simple.

The point of this is to look like the main site.

=cut

# This is the list of pages to generate: Change this to
# add/subtract/etc. pages. Index is done seperately.
# Title, source

my @longlifecycle = (
              ['CentOS Linux 7 Install','centos7_install'],
              ['CentOS Linux 6 Install','centos6_install'],
              ['Scientific Linux 7 Install','scientific7_install'],
              ['Scientific Linux 6 Install','scientific6_install'],
              ['Red Hat Enterprise Linux 8 Install','RHEL8_install'],
              ['Red Hat Enterprise Linux 7 Install','RHEL7_install'],
              ['Red Hat Enterprise Linux 6 Install','RHEL6_install'],
              ['Oracle Linux 8 Install','oracle8_install'],
              ['Oracle Linux 7 Install','oracle7_install'],
              ['Oracle Linux 6 Install','oracle6_install'],
              ['AlmaLinux 8 Install','alma8_install'],
              ['Rocky Linux 8 Install','rocky8_install'],
              ['SuSE Linux Enterprise Server 15 Install', 'sles15_install'],
              ['SuSE Linux Enterprise Server 12 Install', 'sles12_install'],
              ['SuSE Linux Enterprise Server 11 Install', 'sles11_install'],
              ['Ubuntu 20.04 LTS Server', 'ubuntu20LTS_install'],
              ['Ubuntu 18.04 LTS Server', 'ubuntu18LTS_install'],
              ['Ubuntu 16.04 LTS Server', 'ubuntu16LTS_install'],
              ['Ubuntu 14.04 LTS Server', 'ubuntu14LTS_install'],
              ['CentOS Stream 8 Install','centos8-stream_install'],
	      );

my @otherlifecycle = (
              ['CentOS Linux 8 Install','centos8_install'],
              );

my @shortlifecycle = (
              ['Fedora 35 Install', 'FC35_install'],
              ['Fedora 34 Install', 'FC34_install'],
              ['Fedora 33 Install', 'FC33_install'],
              ['Fedora 32 Install', 'FC32_install'],
              ['Fedora 31 Install', 'FC31_install'],
              ['Fedora 30 Install', 'FC30_install'],
              ['Fedora 29 Install', 'FC29_install'],
              ['Fedora 28 Install', 'FC28_install'],
              ['Fedora 27 Install', 'FC27_install'],
              ['Fedora 26 Install', 'FC26_install'],
              ['Fedora 25 Install', 'F25_install'],
              );
 
my @ancillary = (
              ['Upgrading from Previous LON-CAPA install', 'upgrade'],
              ['LON-CAPA License (Gnu Public License)', 'license']
              );

my @other_pages = ( 
		    ['Developer Information', 'dev'],
		    ['Configuration Information', 'config'],
		    );

open SHELL, '<', "shell.html";
my $shell = join '', <SHELL>;
$shell =~ s/\r/\n/g;

# Call with: The title, breadcrumb, and content
sub replaceText {
    my ($title, $links, $breadcrumb, $content) = @_;

    my $page = $shell;
    $page =~ s/\<!-- *title *--\>/$title/g;
    $page =~ s/\<!-- *links *--\>/$links/g;
    $page =~ s/\<!-- *breadcrumb *--\>/$breadcrumb/g;
    $page =~ s/\<!-- *content *--\>/$content/g;

    return $page;
}

# Do the index page

open INDEX, '>', "index.html";
my $content = <<PRELUDE; 

<p>LON-CAPA is based upon a lot of Open Source modules, so it's
important to have the right environment on your computer. This is most
easily done by installing on a dedicated machine while installing the
operating system.</p>

<p>The configuring of LON-CAPA is part of the install process of the
software. However, in case something needs to be altered, or isn't
working, here is some <a href="config.html">information on configuring
LON-CAPA</a>.</p>

<hr />
<h3>Supported Linux Distros</h3>
PRELUDE

$content .= '<p>LON-CAPA is supported on a variety of Linux distributions.</p>'."\n".
             '<p>In the list below these are divided into distros with a long
life cycle, i.e., those for which a particular version is supported by the distributor for 5 years or more, those with a short life cycle, i.e., those for which a particular version is supported for up to 18 months, and those initially advertised with a long lifecycle, later reduced.</p>'.     
            '<div style="float: left;">'.
            '<b>Long life cycle</b><br />'.
            '<ul>'."\n";
for (@longlifecycle) {
    $content .= "<li><a href='$_->[1].html'>$_->[0]</a></li>\n";
}
$content .= '</ul></div>'."\n".
            '<div style="float: left;">'.
            '<b>Short life cycle</b><br />'.
            '<ul>'."\n";
for (@shortlifecycle) {
    $content .= "<li><a href='$_->[1].html'>$_->[0]</a></li>\n";
}
$content .= '</ul></div>'."\n".
            '<div style="float: left;">'.
            '<b>Variable life cycle</b><br />'.
            '<ul>'."\n";
for (@otherlifecycle) {
    $content .= "<li><a href='$_->[1].html'>$_->[0]</a></li>\n";
}
$content .= '</ul></div>'."\n".'<br clear="all" />'."\n".
            '<b>Additional information</b><ul>'."\n";
for (@ancillary) {
    $content .= "<li><a href='$_->[1].html'>$_->[0]</a></li>\n";
}
$content .= '</ul><br />';


my $testing_content = '';
if (@testing_pages) {
    $testing_content .= "<hr/><p>Installation on the following systems requires the use of a testing release of LON-CAPA.</p>\n";
    $testing_content .= "<ul>\n";
    for (@testing_pages) {
	$testing_content .= "<li><a href='$_->[1].html'>$_->[0]</a></li>\n";
    }
    $testing_content .= "</ul>\n";
}


$content .= <<"POSTLUDE";
<hr />
<a name="download" />
<h3>Downloading LON-CAPA</h3>

<p>
<b>Current Production Release is Version LATESTVERSION.
This version was released on LATESTDATE.</b>
</p>
<p>
You can download the <b>most current production version of LON-CAPA</b> at
<a href="http://install.lon-capa.org/versions/loncapa-current.tar.gz">
http://install.lon-capa.org/versions/loncapa-current.tar.gz</a>
(version LATESTVERSION).
</p>
TESTINGRELEASE_START
<p>
<b>Current Testing Release is Version LATESTTESTINGVERSION.
This version was released on LATESTTESTINGDATE.</b>
</p>
<p>
You can download the <b>testing version of the upcoming LON-CAPA</b> at
<a href="http://install.lon-capa.org/versions/loncapa-testing.tar.gz">
http://install.lon-capa.org/versions/loncapa-testing.tar.gz</a>
(version LATESTTESTINGVERSION).
</p>
$testing_content
TESTINGRELEASE_END

<hr />
POSTLUDE

open(RELEASE, '<', "release.frag");
$content .= join('',<RELEASE>);
close(RELEASE);

$content .= "<ul>\n";
my @testing_pages = ( 
		      );
for (@other_pages) {
    $content .= "<li><a href='$_->[1].html'>$_->[0]</a></li>\n";
}

$content .= "</ul>\n";

$links='<link rel="alternate" type="application/rss+xml" title="CVS RSS" href="loncapa.rss" />';

my $index = replaceText("Install LON-CAPA", $links, '<font color="#006600" face="Arial, Helvetica, sans-serif">Documentation/Download</font>',
			$content);

print INDEX $index;
close INDEX;

# Build the pages
for (@longlifecycle,@shortlifecycle,@otherlifecycle,@ancillary,@other_pages,@testing_pages) {
    my ($title, $source) = @$_;

    # read in content
    open SOURCE, '<', $source.'.frag';
    $content = join '', <SOURCE>;
    close SOURCE;

    $content = replaceText($title, '', '<font face="Arial, Helvetica, sans-serif"><a href="/">Documentation/Download</a> &raquo; '.
                           '</font><font color="#006600" face="Arial, Helvetica, sans-serif">'.$title,
			   $content);
    open DEST, '>', $source.'.html';
    print DEST $content;
    close DEST;
}