Joomla component - external API (affjet)

General information for the website: charity
Description of requirements/features: We would like to integrate the affjet API into a joomla component

We are currently only interested in the getTransactions($params); part of the API (at the bottom).

The affjet api is available at the below link -
http://www.affjet.com/2012/11/26/4-4-affjet-api/

We only require the date, amount, commission and status to show in the front end.

(example of how we just got the commission data when playing around with the API = $data->commission)

The below parameters will have to be editable in the backend. (CustomID may not be referenced at the affjet website but can be used as below)

$params["apiKey"] = "*******************";
$params["pageNumber"] = 0;
$params["pageSize"] = 3;
$params["startDate"] = "2013-12-01 00:00:00";
$params["endDate"] = "2013-12-30 23:59:59";
$params["customId"] = array("example");

-

The information is only updated once a day. This makes caching the information a good idea.
However the data needs to be cached for each user because the information shown by the Affjet API will change between users. The cache will have to be reset everyday at 7 in the morning for all users.

Please contact me with any questions. I may not have explained the cache part very clearly.
Specific technologies required: joomla, php, API, cache,
Extra notes: