// fig09_09.cpp
// Program to test class Time.                     
// NOTE: This file must be linked with Time.cpp. 
#include <fmt/format.h>
#include <iostream>
#include <stdexcept> // invalid_argument exception class
#include <string_view> 
#include "Time.h" // definition of class Time from Time.h 

// displays a Time in 24-hour and 12-hour formats
void displayTime(std::string_view message, const Time& time) {
   std::cout << fmt::format("{}\n24-hour time: {}\n12-hour time: {}\n\n",
      message, time.to24HourString(), time.to12HourString());
}

int main() {
   Time t{}; // instantiate object t of class Time

   displayTime("Initial time:", t); // display t's initial value
   t.setTime(13, 27, 6); // change time
   displayTime("After setTime:", t); // display t's new value

   // attempt to set the time with invalid values
   try {
      t.setTime(99, 99, 99); // all values out of range
   }
   catch (const std::invalid_argument& e) {
      std::cout << fmt::format("Exception: {}\n\n", e.what());
   }

   // display t's value after attempting to set an invalid time
   displayTime("After attempting to set an invalid time:", t);
}

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