first commit

class/class.Feed.php

@@ -0,0 +1,119 @@
+<?php
+
+class Feed
+{
+    private $type;
+    private $cache;
+
+    /***** Supported types feed addresses ******/
+
+    private $feeds = [
+        'heureka' => 'http://www.heureka.cz/direct/xml-export/shops/heureka-sekce.xml',
+        'google' => 'http://shared.kupshop.cz/tmp/google_ctegories.xml',
+    ];
+
+    /**** Interface ***/
+
+    public function __construct($type = 'heureka')
+    {
+        $this->type = $type;
+    }
+
+    public function getHeurekaCategories()
+    {
+        return $this->getCategories();
+    }
+
+    public function getCategories()
+    {
+        if (!empty($this->cache)) {
+            return $this->cache;
+        }
+
+        global $cfg;
+
+        $cacheFile = $cfg['Path']['shared_dirs']."tmp/categories_{$this->type}";
+
+        if (file_exists($cacheFile)) {
+            return unserialize(file_get_contents($cacheFile));
+        }
+
+        $xml = simplexml_load_file($this->feeds[$this->type]);
+
+        $categories = $this->parseCategories($xml);
+
+        $fileHandle = fopen($cacheFile, 'wb');
+        fwrite($fileHandle, serialize($categories));
+        fflush($fileHandle);
+        fclose($fileHandle);
+
+        $this->cache = $categories;
+
+        return $categories;
+    }
+
+    public function getCategoryTree(&$tree)
+    {
+        $this->formatCategory($tree, $this->getCategories(), 0);
+
+        return $tree;
+    }
+
+    public function getFullCategory($cat_id)
+    {
+        return $this->findCategory($this->getCategories(), $cat_id);
+    }
+
+    /**** Non-Interface function *****/
+
+    private function parseCategories(&$parent)
+    {
+        $categories = [];
+
+        foreach ($parent->CATEGORY as $category) {
+            $id = intval(strval($category->CATEGORY_ID));
+            $name = strval($category->CATEGORY_NAME);
+            $categories[$id] = ['name' => $name];
+
+            if (!empty($category->CATEGORY)) {
+                $categories[$id]['children'] = $this->parseCategories($category);
+            }
+        }
+
+        return $categories;
+    }
+
+    private function formatCategory(&$tree, $categories, $level)
+    {
+        foreach ($categories as $id => $category) {
+            $tree[strval($id)] = str_pad('', $level, '-').' '.$category['name'];
+
+            if (!empty($category['children'])) {
+                $this->formatCategory($tree, $category['children'], $level + 1);
+            }
+        }
+
+        return $categories;
+    }
+
+    private function findCategory($categories, $cat_id)
+    {
+        foreach ($categories as $id => $category) {
+            if ($id == $cat_id) {
+                return [$category['name']];
+            }
+
+            if (!empty($category['children'])) {
+                $ret = $this->findCategory($category['children'], $cat_id);
+
+                if ($ret !== false) {
+                    array_unshift($ret, $category['name']);
+
+                    return $ret;
+                }
+            }
+        }
+
+        return false;
+    }
+}