Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php |
||
| 9 | class Product implements MessageComponentInterface |
||
| 10 | { |
||
| 11 | protected $clients; |
||
| 12 | protected $dbConn; |
||
| 13 | |||
| 14 | public function __construct() |
||
| 15 | { |
||
| 16 | $this->clients = new \SplObjectStorage(); |
||
| 17 | // Now connect to PS DB using Simplon on Composer |
||
| 18 | $this->dbConn = new \Simplon\Mysql\Mysql( |
||
| 19 | '127.0.0.1', |
||
| 20 | _DB_USER_, |
||
| 21 | _DB_PASSWD_, |
||
| 22 | _DB_NAME_ |
||
| 23 | ); |
||
| 24 | $log_file = 'ws-prod.log'; |
||
| 25 | Analog::handler(\Analog\Handler\File::init($log_file)); |
||
| 26 | } |
||
| 27 | |||
| 28 | public function onOpen(ConnectionInterface $conn) |
||
| 29 | { |
||
| 30 | // Store the new connection to send messages to later |
||
| 31 | $this->clients->attach($conn); |
||
| 32 | |||
| 33 | Analog::log("New connection: $conn->resourceId"); |
||
| 34 | } |
||
| 35 | |||
| 36 | public function onMessage(ConnectionInterface $from, $msg) |
||
| 37 | { |
||
| 38 | foreach ($this->clients as $client) { |
||
| 39 | if ($from == $client) { |
||
| 40 | $category = (int) substr($msg, 0, strpos($msg, ',')); |
||
| 41 | if ($category != 0) { |
||
| 42 | $products = $this->getProducts($category); |
||
| 43 | } else { |
||
| 44 | $product = substr($msg, strpos($msg, ',') + 1); |
||
| 45 | $products = $this->getProducts($product); |
||
| 46 | } |
||
| 47 | Analog::log("Product variables: $msg"); |
||
| 48 | } |
||
| 49 | } |
||
| 50 | |||
| 51 | // Basic test - fire the correct product back via Websocket |
||
| 52 | $client->send(json_encode($products)); |
||
| 53 | } |
||
| 54 | |||
| 55 | private function getProducts($category) |
||
| 56 | { |
||
| 57 | $product_ids = $this->getProductIDs($category); |
||
| 58 | $products = $this->getProduct($product_ids); |
||
| 59 | |||
| 60 | return $products; |
||
| 61 | } |
||
| 62 | |||
| 63 | private function getProductIDs($category) |
||
| 64 | { |
||
| 65 | $sql = 'SELECT DISTINCT p.id_product |
||
| 66 | from '._DB_PREFIX_.'product as p |
||
| 67 | LEFT JOIN '._DB_PREFIX_.'image AS i ON i.id_product = p.id_product |
||
| 68 | LEFT JOIN '._DB_PREFIX_.'product_lang as pl ON pl.id_product = p.id_product |
||
| 69 | WHERE p.active = 1 |
||
| 70 | AND p.id_category_default = '.(int) $category.' |
||
| 71 | GROUP BY p.id_product'; |
||
| 72 | $pcats = $this->dbConn->fetchRowMany($sql); |
||
| 73 | $ids = ''; |
||
| 74 | if (is_array($pcats) && !empty($pcats) { |
||
| 75 | foreach ($pcats as $row) { |
||
| 76 | $ids .= $row['id_product'].','; |
||
| 77 | } |
||
| 78 | } |
||
| 79 | |||
| 80 | $ids = rtrim($ids, ','); |
||
| 81 | |||
| 82 | return $ids; |
||
| 83 | } |
||
| 84 | |||
| 85 | /** |
||
| 86 | * @param string $ids |
||
| 87 | */ |
||
| 88 | private function getProduct($ids) |
||
| 89 | { |
||
| 90 | $sql = 'SELECT p.id_product, p.id_supplier, p.ean13, p.upc, p.price, p.wholesale_price, p.on_sale, p.quantity, p.id_category_default, p.show_price, p.available_for_order, p.minimal_quantity, p.customizable, |
||
| 91 | p.out_of_stock, pl.link_rewrite, pl.name, i.id_image, il.legend, |
||
| 92 | cl.name AS category_default, cl.id_category AS cat_id, |
||
| 93 | ps.price AS orderprice |
||
| 94 | FROM '._DB_PREFIX_.'product as p |
||
| 95 | LEFT JOIN '._DB_PREFIX_.'image AS i ON i.id_product = p.id_product |
||
| 96 | LEFT JOIN '._DB_PREFIX_.'product_shop as ps ON ps.id_product = p.id_product |
||
| 97 | LEFT JOIN '._DB_PREFIX_.'product_lang as pl ON pl.id_product = p.id_product |
||
| 98 | LEFT JOIN '._DB_PREFIX_.'image_lang as il ON i.id_image = il.id_image |
||
| 99 | LEFT JOIN '._DB_PREFIX_.'category_lang cl ON p.id_category_default = cl.id_category |
||
| 100 | WHERE p.id_product IN ('.$ids.') |
||
| 101 | AND i.cover = 1 |
||
| 102 | AND p.active = 1 |
||
| 103 | GROUP BY p.id_product |
||
| 104 | ORDER BY p.price ASC'; |
||
| 105 | |||
| 106 | $result = $this->dbConn->fetchRowMany($sql); |
||
| 107 | |||
| 108 | return $result; |
||
| 109 | } |
||
| 110 | |||
| 111 | public function onClose(ConnectionInterface $conn) |
||
| 112 | { |
||
| 113 | // The connection is closed, remove it, as we can no longer send it messages |
||
| 114 | $this->clients->detach($conn); |
||
| 115 | Analog::log('Connection '.$conn->resourceId.' has disconnected'); |
||
| 116 | } |
||
| 117 | |||
| 118 | public function onError(ConnectionInterface $conn, \Exception $e) |
||
| 119 | { |
||
| 120 | echo "An error has occurred: {$e->getMessage()}\n"; |
||
| 121 | Analog::log('Error: '.$e->getMessage().''); |
||
| 122 | $conn->close(); |
||
| 125 |