Customizing Wordpress Plugin (Adding Pricing Condition based on Dates)

Halio is a WordPress plugin for any business that provides transport as a service. It facilitates the price estimation, booking and payment of journeys. Halio allows for the creation of multiple, complex pricing conditions to accommodate for some situations. It can calculate the price based on distance, time or occupants either individually or in combination. Alternatively it can charge a fixed price for certain locations, that it possible with geo-location based PRICING CONDITIONS. You can also add uber-style surge charges, for example multiplying fares by 1.5x in rush hour. THIS PROJECT REQUIRES TO CREATE AN EXTRA PRICE CONDITION: 1) Charge a fixed price for each extra day of service. Example: Service traveling from Point A to Point B on round trip generates an X estimated fare, but if the user defines the duration of the travel with diferent dates, the plugin have to consider an extra variable for include in the estimated fare those extra days. If the start date is 20/05/2016 and the return date is 24/05/2016, the final fare would consider: (Normal estimated fare with the current price conditions) + (Fixed price per extra day * Number of extra days (depending on the return date) DEMO User: [login to view URL] Admin: [login to view URL] (username: halio, password: password) PLUGIN PAGE