#include "hello.hpp"

#include <iostream>
#include <print>

namespace hello {

// unnamed namespace -> contains helper functions etc that are local to this file
namespace {

// helper function (not part of the class)
void greet_(std::string_view name, std::ostream& out, std::ostream& err) {
    if (name.empty()) {
        err << "Invalid name!" << std::endl;
        return;
    }
    std::println("Hi {}, how are you?", name);
}

}

// definition of the member function declared in the header
void Greeter::greet(std::string_view name) {
    greet_(name, std::cout, std::cerr);
}

} // namespace hello