how i can create my own local currency payment gateway ?

I want to create my own online shopping site . It will be locally targeting so , I want to know how to add payment gateways which is use debit card works with banks here at my country (Libya) and with local currency .. there are different major banks here , and we have POS but I want to add a payment bottom at my site . WHAT IS BEST ADVICE TO ME TO ACREATE SIMPLE PAYMENT IN THIS SITUATION