Dealing with installment buying

[codemaster2008]

We have an unusual situation here and I'd like to know if someone out there knows how to deal with it.

 

I have this product, which has two payment terms: Monthly and Annually.

If the customer picks the monthly plan everything will be "normal" and account created after payment.

 

However the "Annually" term gets complicated.

The user will pay 50% (half), get the account created and pay the other half 30 days latter.

 

So, is it possible?

[WHMCS John]

I'm afraid that isn't possible.

[codemaster2008]

Hi John, it maybe sounds crazy but my idea is use action hooks to perform these tasks:

 

- Identify the product

- Automatically assign a 50% discount and a note to the order explaining it

- Create a new invoice for the other 50% due on 30 days

 

A lot of things going on under the hood but I believe will work.

When the user pay the first invoice the product is activated and this invoice is now half of the price.

 

I'm not a php programmer but after look at php documentation and the little documentation available for action hooks i can hook to the following events and test everything that i need:

 

PreCalculateCartTotals

AfterShoppingCartCheckout

PreShoppingCartCheckout

 

So my questions now are:

 

How do i remove or add items to the order/invoice from these events?

I'm planing to use use "PreCalculateCartTotals" for another thing but to the question here, If i'm not wrong i could:

 

- Change the order on PreShoppingCartCheckout (Add discount)

- Add a new invoice on AfterShoppingCartCheckout