Viết phần mềm

For wholesale, I need a new module for OpenCart (version 2.0.2.0) to manage client payment transaction and reporting for billing. List functions should be developed: - Click a button to transfer the value of Order into a Debit. - Manualy creat a Credit after receiving customer bank transfer. - Manualy create a random Credit / Debit for a customer. - Make a "Transaction History Report" or "Balance report" on each customer for printing (view attacment for example) The module must be installed and removed easily by Opencart Extension Installer (OCMod or VQMod) ASAP.