<?php

/*
 * Copyright (c) 2010-2022 Tim Düsterhus.
 *
 * Use of this software is governed by the Business Source License
 * included in the LICENSE file.
 *
 * Change Date: 2026-09-17
 *
 * On the date above, in accordance with the Business Source
 * License, use of this software will be governed by version 2
 * or later of the General Public License.
 */

namespace chat\system\command;

use wcf\data\DatabaseObject;
use wcf\system\bbcode\BBCodeHandler;
use wcf\system\exception\UserInputException;
use wcf\system\html\input\HtmlInputProcessor;
use wcf\system\message\censorship\Censorship;
use wcf\system\WCF;

/**
 * Represents a command that processes the input using HtmlInputProcessor.
 */
abstract class AbstractInputProcessedCommand extends AbstractCommand
{
    /**
     * HtmlInputProcessor to use.
     * @var \wcf\system\html\input\HtmlInputProcessor
     */
    protected $processor;

    /**
     * The text processed last.
     * @var string
     */
    private $text;

    public function __construct(DatabaseObject $object)
    {
        parent::__construct($object);

        $this->processor = new HtmlInputProcessor();
        $this->setDisallowedBBCodes();
    }

    private function setDisallowedBBCodes()
    {
        BBCodeHandler::getInstance()->setDisallowedBBCodes(\explode(
            ',',
            WCF::getSession()->getPermission('user.chat.disallowedBBCodes')
        ));
    }

    public function setText($text)
    {
        if ($this->text === $text) {
            return;
        }

        $this->text = $text;
        $this->setDisallowedBBCodes();
        $this->processor->process(
            $text,
            'be.bastelstu.chat.message',
            0
        );
    }

    public function validateText()
    {
        if ($this->processor->appearsToBeEmpty()) {
            throw new UserInputException(
                'message',
                WCF::getLanguage()->getDynamicVariable('wcf.global.form.error.empty')
            );
        }

        $message = $this->processor->getTextContent();

        // validate message length
        if (\mb_strlen($message) > CHAT_MAX_LENGTH) {
            throw new UserInputException(
                'message',
                WCF::getLanguage()->getDynamicVariable(
                    'wcf.message.error.tooLong',
                    [
                        'maxTextLength' => CHAT_MAX_LENGTH,
                    ]
                )
            );
        }

        // search for disallowed bbcodes
        $this->setDisallowedBBCodes();
        $disallowedBBCodes = $this->processor->validate();
        if (!empty($disallowedBBCodes)) {
            throw new UserInputException(
                'message',
                WCF::getLanguage()->getDynamicVariable(
                    'wcf.message.error.disallowedBBCodes',
                    [
                        'disallowedBBCodes' => $disallowedBBCodes,
                    ]
                )
            );
        }

        // search for censored words
        if (ENABLE_CENSORSHIP) {
            $result = Censorship::getInstance()->test($message);
            if ($result) {
                throw new UserInputException(
                    'message',
                    WCF::getLanguage()->getDynamicVariable(
                        'wcf.message.error.censoredWordsFound',
                        [
                            'censoredWords' => $result,
                        ]
                    )
                );
            }
        }
    }
}