OpenCart 🇺🇦

$sql = "SELECT p.*, pd.* FROM " . DB_PREFIX . "product p LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id)";

if (!empty($data['filter_category'])) {
	$sql .= " LEFT JOIN " . DB_PREFIX . "product_to_category p2c ON (p.product_id = p2c.product_id)";
}

if ($data['filter_market_name'] == 'ebay') {
	$sql .= " LEFT JOIN `" . DB_PREFIX . "ebay_listing` `ebay` ON (`p`.`product_id` = `ebay`.`product_id`)";

	if ($data['filter_market_id'] == 0) {
		$sql .= " LEFT JOIN (SELECT product_id, IF( SUM( `status` ) = 0, 0, 1 ) AS 'listing_status' FROM " . DB_PREFIX . "ebay_listing GROUP BY product_id ) ebay2 ON (p.product_id = ebay2.product_id)";
	}
}

if ($data['filter_market_name'] == 'amazon') {
	if ($data['filter_market_id'] <= 4) {
		$sql .= " LEFT JOIN " . DB_PREFIX . "amazon_product ap ON p.product_id = ap.product_id";
	} elseif ($data['filter_market_id'] <= 6) {
		$sql .= " LEFT JOIN " . DB_PREFIX . "amazon_product_link apl ON p.product_id = apl.product_id";
	}

	$amazon_status = array(
		1 => 'saved',
		2 => 'uploaded',
		3 => 'ok',
		4 => 'error',
	);
}

if ($data['filter_market_name'] == 'amazonus') {
	if ($data['filter_market_id'] <= 4) {
		$sql .= " LEFT JOIN " . DB_PREFIX . "amazonus_product ap ON p.product_id = ap.product_id";
	} elseif ($data['filter_market_id'] <= 6) {
		$sql .= " LEFT JOIN " . DB_PREFIX . "amazonus_product_link apl ON p.product_id = apl.product_id";
	}

	$amazonus_status = array(
		1 => 'saved',
		2 => 'uploaded',
		3 => 'ok',
		4 => 'error',
	);
}

$sql .= " WHERE pd.language_id = '" . (int)$this->config->get('config_language_id') . "'";

if (!empty($data['filter_category'])) {
	if ($data['filter_category'] == 'none') {
		$sql .= " AND p2c.category_id IS NULL";
	} else {
		$sql .= " AND p2c.category_id = '" . (int)$data['filter_category'] . "'";
	}
}

if ($data['filter_market_name'] == 'ebay') {
	if ($data['filter_market_id'] == 0) {
		$sql .= " AND ebay.ebay_listing_id IS NULL OR ebay2.listing_status = 0";
	} else {
		$sql .= " AND ebay.ebay_listing_id IS NOT NULL AND ebay.status = 1";
	}
}

if ($data['filter_market_name'] == 'amazon') {
	if ($data['filter_market_id'] == 0) {
		$sql .= " AND ap.product_id IS NULL ";
	} elseif ($data['filter_market_id'] == 5) {
		$sql .= " AND apl.id IS NOT NULL";
	} elseif ($data['filter_market_id'] == 6) {
		$sql .= " AND apl.id IS NULL";
	} else {
		$sql .= " AND FIND_IN_SET('" . $this->db->escape($amazon_status[$data['filter_market_id']]) . "', ap.`status`) != 0";
	}
}

if ($data['filter_market_name'] == 'amazonus') {
	if ($data['filter_market_id'] == 0) {
		$sql .= " AND ap.product_id IS NULL ";
	} elseif ($data['filter_market_id'] == 5) {
		$sql .= " AND apl.id IS NOT NULL";
	} elseif ($data['filter_market_id'] == 6) {
		$sql .= " AND apl.id IS NULL";
	} else {
		$sql .= " AND FIND_IN_SET('" . $this->db->escape($amazonus_status[$data['filter_market_id']]) . "', ap.`status`) != 0";
	}
}

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

if (!empty($data['filter_model'])) {
	$sql .= " AND p.model LIKE '" . $this->db->escape($data['filter_model']) . "%'";
}

if (!empty($data['filter_price'])) {
	$sql .= " AND p.price >= '" . (double)$data['filter_price'] . "'";
}

if (!empty($data['filter_price_to'])) {
	$sql .= " AND p.price <= '" . (double)$data['filter_price_to'] . "'";
}

if (isset($data['filter_quantity']) && !is_null($data['filter_quantity'])) {
	$sql .= " AND p.quantity >= '" . $this->db->escape($data['filter_quantity']) . "'";
}

if (isset($data['filter_quantity_to']) && !is_null($data['filter_quantity_to'])) {
	$sql .= " AND p.quantity <= '" . $this->db->escape($data['filter_quantity_to']) . "'";
}

if (isset($data['filter_status']) && !is_null($data['filter_status'])) {
	$sql .= " AND p.status = '" . (int)$data['filter_status'] . "'";
}

if (isset($data['filter_sku']) && !is_null($data['filter_sku'])) {
	$sql .= " AND p.sku != ''";
}

if (isset($data['filter_desc']) && !is_null($data['filter_desc'])) {
	$sql .= " AND pd.description != ''";
}

if (isset($data['filter_manufacturer']) && !is_null($data['filter_manufacturer'])) {
	$sql .= " AND p.manufacturer = '" . (int)$data['filter_manufacturer'] . "'";
}

$sql .= " GROUP BY p.product_id";

$sort_data = array(
	'pd.name',
	'p.model',
	'p.price',
	'p.quantity',
	'p.status',
	'p.sort_order'
);

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

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

if (isset($data['start']) || isset($data['limit'])) {
	if ($data['start'] < 0) {
		$data['start'] = 0;
	}

	if ($data['limit'] < 1) {
		$data['limit'] = 20;
	}

	$sql .= " LIMIT " . (int)$data['start'] . "," . (int)$data['limit'];
}

$query = $this->db->query($sql);

return $query->rows;