phreshpress is a PHP library that interacts with Cafepress's API (version 3).
Currently in supports adding images (not SVGs) to Cafepress products. By defaulte the library can position the image on the Front Center of the product. If you know the products other positions, the library can handle that too.
The library has been built from a strict OOP perspective.
Currently there are three main 'cafepress objects': User, Product, Design, and Designer (it applies a design to a product). Additionally, there is a Store object that mainly acts as a factory and simplifies the instantiation of User, Product, Design, and Designer objects.
To each Cafepress Object corresponds a 'Request' object and a 'Response' object. The Request object handles the actual POST or GET request to the API, and the Response object encapsulates the API's XML response.
Hopefully, this architecture is robust enough to make it easy to implement new additions and extensions.
Here is an example:
$email = 'my@emailaddress.com';
$password = 'mysekritpassword';
$appKey = 'appkeyfromcafepress';
$storeName = 'storename';
$imgPath = '/image.png';
$merchandiseId = '2';
$cp = new Cafepress_Store( $appKey, $storeName);
$cp->authenticate( $email, $password );
//echo out the marketURI for that product and it's design
echo $cp->createProductWithFrontDesign( $merchandiseId, $imgPath );
GNU Public License v3
Add more documentation, although IMHO, the code is fairly clean and straightforward.
It's probably best to fork this project if you want to work on it further. I'm making it available to the public in hopes that someone can take it further than I currently want to.