<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/

/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
	exit;
}

/**
* @todo [words] check regular expressions for special char replacements (stored specialchared in db)
*/
class acp_words
{
	var $u_action;

	function main($id, $mode)
	{
		global $db, $user, $auth, $template, $cache;
		global $config, $phpbb_root_path, $phpbb_admin_path, $phpEx;

		$user->add_lang('acp/posting');

		// Set up general vars
		$action = request_var('action', '');
		$action = (isset($_POST['add'])) ? 'add' : ((isset($_POST['save'])) ? 'save' : $action);

		$s_hidden_fields = '';
		$word_info = array();

		$this->tpl_name = 'acp_words';
		$this->page_title = 'ACP_WORDS';

		$form_name = 'acp_words';
		add_form_key($form_name);

		switch ($action)
		{
			case 'edit':

				$word_id = request_var('id', 0);

				if (!$word_id)
				{
					trigger_error($user->lang['NO_WORD'] . adm_back_link($this->u_action), E_USER_WARNING);
				}

				$sql = 'SELECT *
					FROM ' . WORDS_TABLE . "
					WHERE word_id = $word_id";
				$result = $db->sql_query($sql);
				$word_info = $db->sql_fetchrow($result);
				$db->sql_freeresult($result);

				$s_hidden_fields .= '<input type="hidden" name="id" value="' . $word_id . '" />';

			case 'add':

				$template->assign_vars(array(
					'S_EDIT_WORD'		=> true,
					'U_ACTION'			=> $this->u_action,
					'U_BACK'			=> $this->u_action,
					'WORD'				=> (isset($word_info['word'])) ? $word_info['word'] : '',
					'REPLACEMENT'		=> (isset($word_info['replacement'])) ? $word_info['replacement'] : '',
					'S_HIDDEN_FIELDS'	=> $s_hidden_fields)
				);

				return;

			break;

			case 'save':

				if (!check_form_key($form_name))
				{
					trigger_error($user->lang['FORM_INVALID']. adm_back_link($this->u_action), E_USER_WARNING);
				}

				$word_id		= request_var('id', 0);
				$word			= utf8_normalize_nfc(request_var('word', '', true));
				$replacement	= utf8_normalize_nfc(request_var('replacement', '', true));

				if ($word === '' || $replacement === '')
				{
					trigger_error($user->lang['ENTER_WORD'] . adm_back_link($this->u_action), E_USER_WARNING);
				}

				// Replace multiple consecutive asterisks with single one as those are not needed
				$word = preg_replace('#\*{2,}#', '*', $word);

				$sql_ary = array(
					'word'			=> $word,
					'replacement'	=> $replacement
				);

				if ($word_id)
				{
					$db->sql_query('UPDATE ' . WORDS_TABLE . ' SET ' . $db->sql_build_array('UPDATE', $sql_ary) . ' WHERE word_id = ' . $word_id);
				}
				else
				{
					$db->sql_query('INSERT INTO ' . WORDS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary));
				}

				$cache->destroy('_word_censors');

				$log_action = ($word_id) ? 'LOG_WORD_EDIT' : 'LOG_WORD_ADD';
				add_log('admin', $log_action, $word);

				$message = ($word_id) ? $user->lang['WORD_UPDATED'] : $user->lang['WORD_ADDED'];
				trigger_error($message . adm_back_link($this->u_action));

			break;

			case 'delete':

				$word_id = request_var('id', 0);

				if (!$word_id)
				{
					trigger_error($user->lang['NO_WORD'] . adm_back_link($this->u_action), E_USER_WARNING);
				}

				if (confirm_box(true))
				{
					$sql = 'SELECT word
						FROM ' . WORDS_TABLE . "
						WHERE word_id = $word_id";
					$result = $db->sql_query($sql);
					$deleted_word = $db->sql_fetchfield('word');
					$db->sql_freeresult($result);

					$sql = 'DELETE FROM ' . WORDS_TABLE . "
						WHERE word_id = $word_id";
					$db->sql_query($sql);

					$cache->destroy('_word_censors');

					add_log('admin', 'LOG_WORD_DELETE', $deleted_word);

					trigger_error($user->lang['WORD_REMOVED'] . adm_back_link($this->u_action));
				}
				else
				{
					confirm_box(false, $user->lang['CONFIRM_OPERATION'], build_hidden_fields(array(
						'i'			=> $id,
						'mode'		=> $mode,
						'id'		=> $word_id,
						'action'	=> 'delete',
					)));
				}

			break;
		}

		$template->assign_vars(array(
			'U_ACTION'			=> $this->u_action,
			'S_HIDDEN_FIELDS'	=> $s_hidden_fields)
		);

		$sql = 'SELECT *
			FROM ' . WORDS_TABLE . '
			ORDER BY word';
		$result = $db->sql_query($sql);

		while ($row = $db->sql_fetchrow($result))
		{
			$template->assign_block_vars('words', array(
				'WORD'			=> $row['word'],
				'REPLACEMENT'	=> $row['replacement'],
				'U_EDIT'		=> $this->u_action . '&amp;action=edit&amp;id=' . $row['word_id'],
				'U_DELETE'		=> $this->u_action . '&amp;action=delete&amp;id=' . $row['word_id'])
			);
		}
		$db->sql_freeresult($result);
	}
}
