#include <MinXL/MinXL.hpp>

// Extern C is not mandatory, but it makes importing functions on VBA much easier
extern "C"
{
    // We recommend receiving data using xl::Variant&
    // Primitive numeric types are ok, but be aware that on the VBA side a 
    // Long has 4 bytes (int32_t) and an Integer has 2 bytes (int16_t).
    xl::Variant IncrementArrayBy(xl::Variant& arg, double value)
    {
        try
        {
            // MinXL will automatically check if this conversion is valid
            xl::Array<xl::Variant> array = std::move(arg);

            // xl::Variant comes with very convenient operator overloads
            for (auto& i : array)
                i += value;

            // Implicitly converts back to xl::Variant
            return std::move(array);
        }
        catch (xl::Exception& e)
        {
            // If the conversion fails, you can return the error message to Excel
            return xl::String{e.what()};
        }
    }
}