<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Bridge\Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;
use Twig\Node\Expression\ArrayExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\Node;
use Twig\Node\TextNode;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 */
final class TransNode extends Node
{
    public function __construct(Node $body, Node $domain = null, AbstractExpression $count = null, AbstractExpression $vars = null, AbstractExpression $locale = null, int $lineno = 0, string $tag = null)
    {
        $nodes = ['body' => $body];
        if (null !== $domain) {
            $nodes['domain'] = $domain;
        }
        if (null !== $count) {
            $nodes['count'] = $count;
        }
        if (null !== $vars) {
            $nodes['vars'] = $vars;
        }
        if (null !== $locale) {
            $nodes['locale'] = $locale;
        }

        parent::__construct($nodes, [], $lineno, $tag);
    }

    public function compile(Compiler $compiler): void
    {
        $compiler->addDebugInfo($this);

        $defaults = new ArrayExpression([], -1);
        if ($this->hasNode('vars') && ($vars = $this->getNode('vars')) instanceof ArrayExpression) {
            $defaults = $this->getNode('vars');
            $vars = null;
        }
        list($msg, $defaults) = $this->compileString($this->getNode('body'), $defaults, (bool) $vars);

        $compiler
            ->write('echo $this->env->getExtension(\'Symfony\Bridge\Twig\Extension\TranslationExtension\')->trans(')
            ->subcompile($msg)
        ;

        $compiler->raw(', ');

        if (null !== $vars) {
            $compiler
                ->raw('array_merge(')
                ->subcompile($defaults)
                ->raw(', ')
                ->subcompile($this->getNode('vars'))
                ->raw(')')
            ;
        } else {
            $compiler->subcompile($defaults);
        }

        $compiler->raw(', ');

        if (!$this->hasNode('domain')) {
            $compiler->repr('messages');
        } else {
            $compiler->subcompile($this->getNode('domain'));
        }

        if ($this->hasNode('locale')) {
            $compiler
                ->raw(', ')
                ->subcompile($this->getNode('locale'))
            ;
        } elseif ($this->hasNode('count')) {
            $compiler->raw(', null');
        }

        if ($this->hasNode('count')) {
            $compiler
                ->raw(', ')
                ->subcompile($this->getNode('count'))
            ;
        }

        $compiler->raw(");\n");
    }

    private function compileString(Node $body, ArrayExpression $vars, bool $ignoreStrictCheck = false): array
    {
        if ($body instanceof ConstantExpression) {
            $msg = $body->getAttribute('value');
        } elseif ($body instanceof TextNode) {
            $msg = $body->getAttribute('data');
        } else {
            return [$body, $vars];
        }

        preg_match_all('/(?<!%)%([^%]+)%/', $msg, $matches);

        foreach ($matches[1] as $var) {
            $key = new ConstantExpression('%'.$var.'%', $body->getTemplateLine());
            if (!$vars->hasElement($key)) {
                if ('count' === $var && $this->hasNode('count')) {
                    $vars->addElement($this->getNode('count'), $key);
                } else {
                    $varExpr = new NameExpression($var, $body->getTemplateLine());
                    $varExpr->setAttribute('ignore_strict_check', $ignoreStrictCheck);
                    $vars->addElement($varExpr, $key);
                }
            }
        }

        return [new ConstantExpression(str_replace('%%', '%', trim($msg)), $body->getTemplateLine()), $vars];
    }
}
