Amazon's Product API limits us to get only 10 items per page, and only 10 pages at a certain query.
I have developed a code that would almost get all items; first, I have supplied a params that looks like this:
$item_params = [
"Service" => "AWSECommerceService",
"Operation" => "ItemSearch",
"AWSAccessKeyId" => env('AWS_ACCESS_KEY_ID'),
"AssociateTag" => env('AWS_ASSOCIATE_TAG_ID'),
"SearchIndex" => "HomeGarden",
"ResponseGroup" => "ItemAttributes,SalesRank,Offers",
"Sort" => "-price",
"BrowseNode" => $item_params['BrowseNode'],
"MaximumPrice" => $max_price,
"MinimumPrice" => "0"
];
then, the code will get all items under that browse node (category), SORTED BY PRICE (desc) also by specifying the MAX and MIN Price of the items to limit the search.
the pseudo-code (original code is too long)
function getProducts($item_params, $max_price = null){
$products = //request to amazon
foreach ($product as $key=>$value){
//add product to db
}
// if the total number of results on the query is not equal to zero, continue looping
if (!$products->totalResults() == 0){
$product = //get the first lowest priced item on the db
$this->getProducts($item_params, $product->price);
}
}
however I am experiencing this scenario :
Sample request output (assuming all items from amazon):
ASIN(unique id) | Price
1 | 201
2 | 194
3 | 195
.
.
n | 33
n+1 | 33
n+2 | 33
.
n+120 | 33
n+121 | 34
n+122 | 35
wherein the products from n to n+120 are equal. This will create an infinite loop to my getProducts
function. How can I avoid this? Knowing that only 10 items are returned on each request and only 10 pages.