admin/model/catalog/download.php

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<?php
class ModelCatalogDownload extends Model {
	public function addDownload($data) {
		$this->db->query("INSERT INTO " . DB_PREFIX . "download SET filename = '" . $this->db->escape((string)$data['filename']) . "', mask = '" . $this->db->escape((string)$data['mask']) . "', date_added = NOW()");

		$download_id = $this->db->getLastId();

		foreach ($data['download_description'] as $language_id => $value) {
			$this->db->query("INSERT INTO " . DB_PREFIX . "download_description SET download_id = '" . (int)$download_id . "', language_id = '" . (int)$language_id . "', name = '" . $this->db->escape($value['name']) . "'");
		}

		return $download_id;
	}

	public function editDownload($download_id, $data) {
		$this->db->query("UPDATE " . DB_PREFIX . "download SET filename = '" . $this->db->escape((string)$data['filename']) . "', mask = '" . $this->db->escape((string)$data['mask']) . "' WHERE download_id = '" . (int)$download_id . "'");

		$this->db->query("DELETE FROM " . DB_PREFIX . "download_description WHERE download_id = '" . (int)$download_id . "'");

		foreach ($data['download_description'] as $language_id => $value) {
			$this->db->query("INSERT INTO " . DB_PREFIX . "download_description SET download_id = '" . (int)$download_id . "', language_id = '" . (int)$language_id . "', name = '" . $this->db->escape($value['name']) . "'");
		}
	}

	public function deleteDownload($download_id) {
		$this->db->query("DELETE FROM " . DB_PREFIX . "download WHERE download_id = '" . (int)$download_id . "'");
		$this->db->query("DELETE FROM " . DB_PREFIX . "download_description WHERE download_id = '" . (int)$download_id . "'");
	}

	public function getDownload($download_id) {
		$query = $this->db->query("SELECT DISTINCT * FROM " . DB_PREFIX . "download d LEFT JOIN " . DB_PREFIX . "download_description dd ON (d.download_id = dd.download_id) WHERE d.download_id = '" . (int)$download_id . "' AND dd.language_id = '" . (int)$this->config->get('config_language_id') . "'");

		return $query->row;
	}

	public function getDownloads($data = array()) {
		$sql = "SELECT * FROM " . DB_PREFIX . "download d LEFT JOIN " . DB_PREFIX . "download_description dd ON (d.download_id = dd.download_id) WHERE dd.language_id = '" . (int)$this->config->get('config_language_id') . "'";

		if (!empty($data['filter_name'])) {
			$sql .= " AND dd.name LIKE '" . $this->db->escape((string)$data['filter_name']) . "%'";
		}

		$sort_data = array(
			'dd.name',
			'd.date_added'
		);

		if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
			$sql .= " ORDER BY " . $data['sort'];
		} else {
			$sql .= " ORDER BY dd.name";
		}

		if (isset($data['order']) && ($data['order'] == 'DESC')) {
			$sql .= " DESC";
		} else {
			$sql .= " ASC";
		}

		if (isset($data['start']) || isset($data['limit'])) {