04. Phone/TechModule_ExtGroup

using System;
using System.Collections.Generic;
using System.Linq;

public class Phone
{
    static void Main()
    {
        string[] phonenumbers = Console.ReadLine().Split();
        string[] names = Console.ReadLine().Split();

        string input = Console.ReadLine();

        while (!input.Equals("done"))
        {
            string[] inputCommands = input.Split();
            string command = inputCommands[0];
            string nameNumber = inputCommands[1];

            for (int i = 0; i < names.Length; i++)
            {
                if (command.Equals("call"))
                {
                    if (nameNumber.Equals(phonenumbers[i]))
                    {
                        CallNumber(nameNumber, phonenumbers[i], names[i]);
                    }
                    else if (nameNumber.Equals(names[i]))
                    {
                        CallName(nameNumber, names[i], phonenumbers[i]);
                    }
                }

                if (command.Equals("message"))
                {
                    if (nameNumber.Equals(phonenumbers[i]))
                    {
                        MessageNumber(nameNumber, phonenumbers[i], names[i]);
                    }

                    else if (nameNumber.Equals(names[i]))
                    {
                        MessageName(nameNumber, names[i], phonenumbers[i]);
                    }
                }
            }

            input = Console.ReadLine();
        }


    }

    private static void MessageNumber(string nameNumber, string v1, string v2)
    {
        Console.WriteLine($"sending sms to {v2}...");

        int sum = 0;
        for (int i = 0; i < v1.Length; i++)
        {
            if (v1[i] >= 49 && v1[i] <= 57)
            {
                sum += (v1[i] - 48);
            }
        }

        if (sum % 2 == 0)
        {
            Console.WriteLine("meet me there");
        }

        else
        {
            Console.WriteLine("busy");
        }
    }

    private static void MessageName(string nameNumber, string v1, string v2)
    {
        Console.WriteLine($"sending sms to {v2}...");

        int sum = 0;
        for (int i = 0; i < v2.Length; i++)
        {
            if (v2[i] >= 49 && v2[i] <= 57)
            {
                sum += (v2[i] - 48);
            }
        }

        if (sum % 2 == 0)
        {
            Console.WriteLine("meet me there");
        }

        else
        {
            Console.WriteLine("busy");
        }
    }

    private static void CallName(string nameNumber, string v1, string v2)
    {
        Console.WriteLine($"calling {v2}...");

        int sum = 0;
        for (int i = 0; i < v2.Length; i++)
        {
            if (v2[i] >= 49 && v2[i] <= 57)
            {
                sum += (v2[i] - 48);
            }
        }

        TimeSpan time = TimeSpan.FromSeconds(sum);

        if (sum % 2 == 0)
        {
            Console.WriteLine("call ended. duration: {0:00}:{1:00}", time.Minutes, time.Seconds);
        }

        else
        {
            Console.WriteLine("no answer");
        }
    }

    private static void CallNumber(string nameNumber, string v1, string v2)
    {
        Console.WriteLine($"calling {v2}...");

        int sum = 0;
        for (int i = 0; i < v1.Length; i++)
        {
            if (v1[i] >= 49 && v1[i] <= 57)
            {
                sum += (v1[i]-48);
            }
        }

        TimeSpan time = TimeSpan.FromSeconds(sum);

        if (sum % 2 == 0)
        {
            Console.WriteLine("call ended. duration: {0:00}:{1:00}", time.Minutes, time.Seconds);
        }

        else
        {
            Console.WriteLine("no answer");
        }
    }


}