folderfix.php

<?php
new class
{
	public function __construct ()
	{
		$args = explode("\n", trim(file_get_contents('php://stdin')));
		$carg = count($args);

		$this->log('===== Action started === %d path(s) to process =====', $carg);

		foreach ($args as $i => $name)
		{
			$bname = basename($name);

			if ((is_dir($name) && (preg_match('/^[0-9]{4}-[0-9]{2}-[0-9]{2}$/', $bname) || preg_match('/^_.+?$/', $bname))) ||
				preg_match('/^\..+?$/', $bname) ||
				preg_match('/^.+?\.(part|download|crdownload)$/', $bname))
			{
				$this->log('[%d/%d] Path "%s" ignored for some reason', $i + 1, $carg, $name);
				continue;
			}

			if (file_exists($name))
			{
				if (filectime($name) > 0)
				{
					$date = date('Y-m-d', filectime($name));

					if (!file_exists(dirname($name) . '/' . $date))
						mkdir(dirname($name) . '/' . $date, 0777, true);

					if (file_exists(dirname($name) . '/' . $date . '/' . $bname))
					{
						$this->log('[%d/%d] File "%s" already exists, trying to rename...', $i + 1, $carg, dirname($name) . '/' . $date . '/' . $bname);

						$path = pathinfo($bname);
						$fnum = 1;

						while (file_exists(dirname($name) . '/' . $date . '/' . $bname))
							$bname = rtrim(sprintf('%s (%d).%s', $path['filename'], $fnum ++, $path['extension']), '. ');
					}

					rename($name, dirname($name) . '/' . $date . '/' . $bname);

					$this->log('[%d/%d] Moved "%s" to "%s"', $i + 1, $carg, $name, dirname($name) . '/' . $date . '/' . $bname);
				}
				else
					$this->log('[%d/%d] No filectime found for "%s"', $i + 1, $carg, $name);
			}
			else
				$this->log('[%d/%d] File "%s" not found', $i + 1, $carg, $name);
		}
	}

	private function log (...$args)
	{
		file_put_contents(dirname(__FILE__) . '/folderfix.log', date('Y-m-d H:i:s') . "\t" . (count($args) > 1 ? vsprintf(array_shift($args), $args) : array_shift($args)) . "\n", FILE_APPEND);
	}
};