unify

#! /usr/bin/env php
<?php
declare(strict_types=1);
\error_reporting(-1);

require_once __DIR__ . '/vendor/autoload.php';
require_once __DIR__ . '/functions.php';

use Symfony\Component\Finder\Finder;


//******************************************************************************
// Update files

/**
 * We take certain whitelisted files, and do token replacement on them.
 *
 * For these files, there are tokens which start/end with `@@`. This script will
 * review those files, look at the tokens, and try to find a file in the
 * `templates/` directory with an appropriate file name.
 *
 * The contents of that file are read, and injected into the whitelisted files,
 * replacing the token. The results are written to a new file in the correct
 * location in the repository's file system.
 */

$__files__ = [
    '_php_cs.dist.tmpl',
    'Makefile.tmpl',
    'phpunit.xml.dist.tmpl',
    'psalm.xml.tmpl',
    'README.md.tmpl',
];

foreach ($__files__ as $__f__) {
    $finder = Finder::create()
        ->files()
        ->name($__f__)
        ->depth('< 3')
        ->in(dirname(__DIR__))
        ->in(dirname(__DIR__) . '/.github')
        ->notPath('vendor')
    ;

    foreach ($finder as $file) {
        $template = file_get_contents($file->getRealPath());
        $writeTo  = sprintf(
            '%s/%s',
            dirname(
                dirname($file->getRealPath())
            ),
            preg_replace('/^_/', '.', strip_tmpl($__f__))
        );

        echo sprintf('Updating %s', $writeTo) . PHP_EOL;

        $contents = preg_replace_callback('/@@([^@]+)@@/S', function(array $matches) use (&$__f__): string {
            [$tag, $directive] = $matches;
            $variables         = explode(';', $directive);
            $file              = array_shift($variables);

            $tmpl = trim(
                file_get_contents(
                    sprintf('%s/templates/%s-%s.tmpl', __DIR__, get_tmpl($__f__), $file)
                )
            );

            foreach ($variables as $var) {
                [$k, $v] = explode('=', $var);
                $tmpl    = str_replace(sprintf('@@%s@@', strtoupper($k)), $v, $tmpl);
            }

            return $tmpl;
        }, $template, -1) . PHP_EOL;

        // Write the file back to disk
        file_put_contents($writeTo, $contents);
    }

    unset($finder);
}