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

chdir(__DIR__ . '/..');

$parserFiles = [
    'platforms/joomla/lib_gantry5/compat/vendor/twig/twig/src/Parser.php',
    'platforms/wordpress/gantry5/compat/vendor/twig/twig/src/Parser.php',
];

foreach ($parserFiles as $file) {
    patch_twig_parser($file);
}

function patch_twig_parser($file)
{
    if (!is_file($file)) {
        return;
    }

    $contents = file_get_contents($file);
    if ($contents === false) {
        throw new RuntimeException("Unable to read {$file}");
    }

    $contents = str_replace(
        <<<'PHP'
        if (null === $this->handlers) {
            $this->handlers = $this->env->getTokenParsers();
            $this->handlers->setParser($this);
        }
PHP,
        <<<'PHP'
        if (null === $this->handlers) {
            $this->handlers = $this->env->getTokenParsers();
            if (is_object($this->handlers) && method_exists($this->handlers, 'setParser')) {
                $this->handlers->setParser($this);
            } elseif (is_array($this->handlers)) {
                foreach ($this->handlers as $handler) {
                    if (is_object($handler) && method_exists($handler, 'setParser')) {
                        $handler->setParser($this);
                    }
                }
            }
        }
PHP,
        $contents,
        $count
    );

    if ($count === 0 && strpos($contents, 'foreach ($this->handlers as $handler)') === false) {
        throw new RuntimeException("Unable to patch token parser setup in {$file}");
    }

    $contents = str_replace(
        <<<'PHP'
                    $subparser = $this->handlers->getTokenParser($token->getValue());
PHP,
        <<<'PHP'
                    if (is_object($this->handlers) && method_exists($this->handlers, 'getTokenParser')) {
                        $subparser = $this->handlers->getTokenParser($token->getValue());
                    } elseif (is_array($this->handlers)) {
                        $subparser = isset($this->handlers[$token->getValue()]) ? $this->handlers[$token->getValue()] : null;
                    } else {
                        $subparser = null;
                    }
PHP,
        $contents,
        $count
    );

    if ($count === 0 && strpos($contents, 'isset($this->handlers[$token->getValue()])') === false) {
        throw new RuntimeException("Unable to patch token parser lookup in {$file}");
    }

    if (file_put_contents($file, $contents) === false) {
        throw new RuntimeException("Unable to write {$file}");
    }
}