generate

#!/usr/bin/env php
<?php

/**
 * Script for generating PDF and FAQ HTML files from the PHP.earth docs repository
 * and testing on Travis. It uses the Docker Pandoc image.
 */

$docsDir = realpath(__DIR__.'/..');

/**
 * Function to get files from given index.
 *
 * @param string $index Index file to get Markdown files from
 */
function getFiles(string $index): array
{
    $curDir = realpath(__DIR__.'/..');
    $files = [];
    $content = file_get_contents($curDir.'/'.$index);
    preg_match_all('/\[.+\]\(((?!http)\/.+)(\).*)/i', $content, $matches);
    foreach ($matches[1] as $file) {
        if (is_dir($curDir.'/'.$file)) {
            $files = array_merge($files, getFiles($file.'/README.md'));
        } else if (is_file($curDir.'/'.$file)) {
            $files[] = 'docs'.$file;
        }
    }

    return $files;
}

/**
 * Generate faq.html file for using in Facebook group
 */
echo $faqHtmlOutput = shell_exec('
docker run -it --rm \
    -v '.$docsDir.':/opt/docs \
    -w /opt/docs \
  phpearth/pandoc pandoc \
    --pdf-engine=xelatex \
    faq/README.md \
    -o /opt/docs/.github/faq.html

    docker run -it --rm \
    -v '.$docsDir.':/opt/docs \
    -w /opt/docs \
    phpearth/pandoc chmod a+rw /opt/docs/.github/faq.html
');

// Replace internal links with absolute online links
$content = file_get_contents($docsDir.'/.github/faq.html');
$content = preg_replace('/(href\=\")((?!http)\/.+(?<!\.md))(\.md\"\>|\"\>)/i', '${1}'.'https://docs.php.earth'.'${2}">', $content);
file_put_contents($docsDir.'/.github/faq.html', $content, LOCK_EX);

/**
 * Generate php-earth.pdf file
 */
$files = implode(' ', getFiles('README.md'));

echo $pdfOutput = shell_exec('
docker run -it \
    -v '.$docsDir.':/opt/docs \
    --name php-earth-pandoc \
  phpearth/pandoc pandoc \
    --verbose \
    --toc \
    --toc-depth=1 \
    --pdf-engine=xelatex \
    --top-level-division=default \
    -M documentclass=report \
    -M title="PHP.earth documentation" \
    -M author="PHP.earth" \
    -M date="Generated on `date +%Y-%m-%d`" \
    -M mainfont="Lato" \
    -M geometry="margin=1in" \
    '.$files.' \
    -o /opt/docs/.github/php-earth.pdf
');

echo "php-earth.pdf created\n";

$exitCode = shell_exec('docker inspect -f {{.State.ExitCode}} php-earth-pandoc');

if (strpos($pdfOutput, '[WARNING]') !== false) {
    $exitCode = 2;
}

shell_exec('docker rm php-earth-pandoc');

exit($exitCode);