myaac/system/pages/guilds/change_rank.php

<?php
/**
 * Change rank
 *
 * @package   MyAAC
 * @author    Gesior <jerzyskalski@wp.pl>
 * @author    Slawkens <slawkens@gmail.com>
 * @copyright 2019 MyAAC
 * @link      https://my-aac.org
 */
defined('MYAAC') or die('Direct access not allowed!');

if(!$logged) {
	$errors[] = "You are not logged in. You can't change rank.";
}
else {
	$guild_name = isset($_REQUEST['guild']) ? urldecode($_REQUEST['guild']) : null;
	if(!Validator::guildName($guild_name))
		$errors[] = Validator::getLastError();
}

if(empty($errors))
{
	$guild = new OTS_Guild();
	$guild->find($guild_name);
	if(!$guild->isLoaded())
		$errors[] = 'Guild with name <b>' . $guild_name . '</b> doesn\'t exist.';
}

if(!empty($errors))
{
	$twig->display('error_box.html.twig', array('errors' => $errors));
	$twig->display('guilds.back_button.html.twig');

	return;
}

//check is it vice or/and leader account (leader has vice + leader rights)
$rank_list = $guild->getGuildRanksList();
$rank_list->orderBy('level', POT::ORDER_DESC);
$guild_leader = false;
$guild_vice = false;
$account_players = $account_logged->getPlayers();
foreach($account_players as $player)
{
	$player_rank = $player->getRank();
	if($player_rank->isLoaded()) {
		foreach($rank_list as $rank_in_guild)
		{
			if($rank_in_guild->getId() == $player_rank->getId())
			{
				$players_from_account_in_guild[] = $player->getName();
				if($player_rank->getLevel() > 1) {
					$guild_vice = true;
					$level_in_guild = $player_rank->getLevel();
				}
				if($guild->getOwner()->getId() == $player->getId()) {
					$guild_vice = true;
					$guild_leader = true;
				}
			}
		}
	}
}

if($guild_vice)
{
	if(isset($_REQUEST['todo']) && $_REQUEST['todo'] === 'save')
	{
		$player_name = stripslashes($_REQUEST['name']);
		$new_rank = (int) $_REQUEST['rankid'];
		if(!Validator::characterName($player_name))
			$errors[] = 'Invalid player name format.';
		$rank = new OTS_GuildRank();
		$rank->load($new_rank);
		if(!$rank->isLoaded())
			$errors[] = "Rank with this ID doesn't exist.";
		if($level_in_guild <= $rank->getLevel() && !$guild_leader)
			$errors[] = "You can't set ranks with equal or higher level than your.";
		if(empty($errors))
		{
			$player_to_change = new OTS_Player();
			$player_to_change->find($player_name);
			if(!$player_to_change->isLoaded())
				$errors[] = "Player with name ' . $player_name . '</b> doesn't exist.";
			else
			{
				$player_in_guild = false;
				if($guild->getName() === $player_to_change->getRank()->getGuild()->getName())
				{
					$player_in_guild = true;
					$player_has_lower_rank = false;
					if($guild_leader || $player_to_change->getRank()->getLevel() < $level_in_guild)
						$player_has_lower_rank = true;
				}
			}
			$rank_in_guild = false;
			foreach($rank_list as $rank_from_guild)
				if($rank_from_guild->getId() === $rank->getId())
					$rank_in_guild = true;
			if(!$player_in_guild)
				$errors[] = 'This player isn\'t in your guild.';
			if(!$rank_in_guild)
				$errors[] = 'This rank isn\'t in your guild.';
			if(!$player_has_lower_rank)
				$errors[] = 'This player has higher rank in guild than you. You can\'t change his/her rank.';
		}

		if(empty($errors))
		{
			$player_to_change->setRank($rank);
			$twig->display('success.html.twig', array(
				'title' => 'Rank Changed',
				'description' => 'Rank of player <b>'.$player_to_change->getName().'</b> has been changed to <b>'.$rank->getName().'</b>.',
				'custom_buttons' => ''
			));
		}
		else {
			$twig->display('error_box.html.twig', array('errors' => $errors));
		}
	}

	$result = getPlayersWithLowerRank($rank_list, $guild_leader, $db, $level_in_guild, $guild);

	$twig->display('guilds.change_rank.html.twig', array(
		'players' => isset($result['players']) ? $result['players'] : array(),
		'guild_name' => $guild->getName(),
		'ranks' => $result['ranks']
	));
}
else {
	echo 'Error. You are not a leader or vice leader in guild ' . $guild->getName();
	$twig->display('guilds.back_button.html.twig', array(
		'new_line' => true,
		'action' => getLink('guilds') . '/' . $guild->getName()
	));
}

/**
 * @param OTS_GuildRanks_List $rank_list
 * @param $guild_leader
 * @param OTS_DB_MySQL $db
 * @param int $level_in_guild
 * @param OTS_Guild $guild
 * @return array
 * @throws E_OTS_NotLoaded
 */
function getPlayersWithLowerRank($rank_list, $guild_leader, $db, $level_in_guild, $guild)
{
	$rid = 0;
	$sid = 0;
	/**
	 * @var OTS_GuildRank $rank
	 */
	foreach($rank_list as $rank)
	{
		if($guild_leader || $rank->getLevel() < $level_in_guild)
		{
			$ranks[$rid]['0'] = $rank->getId();
			$ranks[$rid]['1'] = $rank->getName();
			$rid++;

			if($db->hasTable(GUILD_MEMBERS_TABLE)) {
				$players_with_rank = $db->query('SELECT `players`.`id` as `id`, `' . GUILD_MEMBERS_TABLE . '`.`rank_id` as `rank_id` FROM `players`, `' . GUILD_MEMBERS_TABLE . '` WHERE `' . GUILD_MEMBERS_TABLE . '`.`rank_id` = ' . $rank->getId() . ' AND `players`.`id` = `' . GUILD_MEMBERS_TABLE . '`.`player_id` ORDER BY `name`;');
			}
			else {
				$players_with_rank = $db->query('SELECT `id`, `rank_id` FROM `players` WHERE `rank_id` = ' . $rank->getId() . ' AND `deleted` = 0;');
			}

			$players_with_rank_number = $players_with_rank->rowCount();
			if($players_with_rank_number > 0)
			{

				foreach($players_with_rank as $result)
				{
					$player = new OTS_Player();
					$player->load($result['id']);
					if(!$player->isLoaded())
						continue;

					if($guild_leader || $guild->getOwner()->getId() !== $player->getId())
					{
						$players_with_lower_rank[$sid][0] = $player->getName();
						$players_with_lower_rank[$sid][1] = $player->getName().' ('.$rank->getName().')';
						$sid++;
					}
				}
			}
		}
	}

	return array('players' => $players_with_lower_rank, 'ranks' => $ranks);
}