LoveCalc

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace LoveCalc
{
    /// <summary>
    /// An application that takes 2 peoples first and last name and then compares them to the word loves.
    /// Counts how many of the letters from loves apears in the names and then gives a 5 digit total.
    /// Each individual number then gets added. For example
    /// L 2
    /// O 0
    /// V 0
    /// E 3
    /// S 2
    /// 2+0,0+0,0+3,3+2 = 2,0,3,5
    /// 2+0,0+3,3+5
    /// etc until you are left with a 2 digit number representing the percentage of love
    /// I have also added a section that you can use to impress your partner by setting a default message
    /// when you enter you and your partners name
    /// </summary>
    class Program
    {
        static void Main(string[] args)
        {
            while (true) //Loop used to keep asking for user input.
            {
                Console.ForegroundColor = ConsoleColor.Magenta;
                Console.WriteLine("**************************************************");
                Console.WriteLine("******************    ******    ******************");
                Console.WriteLine("****************        **        ****************");
                Console.WriteLine("***************                    ***************");
                Console.WriteLine("***************  LOVE CALCULATOR   ***************");
                Console.WriteLine("***************                    ***************");
                Console.WriteLine("****************                  ****************");
                Console.WriteLine("*****************                *****************");
                Console.WriteLine("*******************            *******************");
                Console.WriteLine("**********************      **********************");
                Console.WriteLine("************************  ************************");
                Console.WriteLine("**************************************************");
                Console.ForegroundColor = ConsoleColor.White;
                Console.WriteLine();

                //Ask for the users name and their partners name and define a string for each.
                Console.WriteLine("Welcome to the Love Calculator.");
                Console.WriteLine();
                Console.Write("Please enter YOUR FIRST name: ");
                string yourNameOne = Console.ReadLine();
                Console.WriteLine();
                Console.Write("Now enter YOUR LAST name: ");
                string yourNameTwo = Console.ReadLine();
                Console.WriteLine();
                Console.Write("Please enter your PARTNERS FIRST name: ");
                string partnerNameOne = Console.ReadLine();
                Console.WriteLine();
                Console.Write("Now enter your PARTNERS LAST name: ");
                string partnerNameTwo = Console.ReadLine();
                Console.WriteLine();

                // Send the names to be calculated by a function
                int totalCompatability = LoveCalculation(yourNameOne, yourNameTwo, partnerNameOne, partnerNameTwo);

                // Display the calculated number that is used for the compatability score.
                Console.ForegroundColor = ConsoleColor.Magenta;
                Console.WriteLine("Compatability Score: " + totalCompatability + "%");
                Console.WriteLine();
                Console.ForegroundColor = ConsoleColor.White;

                Console.Write("<enter> to continue, <esc> or q to quit: "); //Tell the user to use <esc> or q to quit.
                var key = (int)Console.ReadKey(true).Key; //Retrieve the user input
                if (key == 27 /* <esc> key*/ || key == 81 /* letter q*/)
                    break;
                Console.Clear(); //Clear the console for the next try.
            }
        }

        /// <summary>
        /// This function is used to calculate the compatability rate. It takes the names and notes how many times
        /// the letter from the word LOVES appears within the string and then adds them together individually
        /// for example: L+O, O+V, V+E, E+S then does the same with the total of each of those until it has a
        /// 2 digit number.
        /// </summary>
        /// <param name="combinedNames"></param>
        /// <returns></returns>
        static int LoveCalculation(string nameOne, string nameTwo, string nameThree, string nameFour)
        {
            // Concatenate strings and make uppercase so that it is easier to compare
            // incase people do or do not use capitals for starting their name.
            string concatNames = nameOne + nameTwo + nameThree + nameFour;
            string upperNames = concatNames.ToUpper();

            // Check for your predetermined string. Here I have set me and my girlfriend
            // If it finds it it outputs the function called PreSetString which is found at the bottom of the code.
            if (upperNames == "RACHELSTRAUGHANDEANTEARSE" || upperNames == "DEANTEARSERACHELSTRAUGHAN")
            {
                PreSetString();
            }

            // Count how many of the letters from the word LOVES appears within the string created from the
            // users input of names.
            // *** I had to find the code from StackOverflow for this part ***
            int countL = upperNames.Split('L').Length - 1;
            int countO = upperNames.Split('O').Length - 1;
            int countV = upperNames.Split('V').Length - 1;
            int countE = upperNames.Split('E').Length - 1;
            int countS = upperNames.Split('S').Length - 1;

            // Run first calculation of L+O, O+V, V+E, E+S
            int lO = countL + countO;
            int oV = countO + countV;
            int vE = countV + countE;
            int eS = countE + countS;

            // Run next calculation
            int loov = lO + oV;
            int ovve = oV + vE;
            int vees = vE + eS;

            // Run next calculation - We're nearly there!
            int loovovve = loov + ovve;
            int ovvevees = ovve + vees;

            // Concatenate final 2 numbers to create compatability percentage
            // *** I had to find the code from StackOverflow for this part ***
            int total = Convert.ToInt32(string.Format("{0}{1}", loovovve, ovvevees));

            // An additional calculation is needed if the final number is 3 digits rather  than 2.
            // For an example the final 2 numbers could be a 5 and a 9 which would would be concatenated
            // to a figure showing 59% however is you got a 15 and a 9 the the figure would show as 159
            // so here we check the length of the number and if its 3 we do an additional calculation.
            // *** I had to find the code from StackOverflow for this part ***
            string totalString = total.ToString();

            while (totalString.Length >= 3)
            {

                 if (totalString.Length == 3)
                {
                    string[] x = new string[totalString.Length];
                    for (int i = 0; i < totalString.Length; i++)
                    {
                        x[i] = totalString.Substring(i, 1);
                    }

                    int finalNum1 = Convert.ToInt32(x[0]);
                    int finalNum2 = Convert.ToInt32(x[1]);
                    int finalNum3 = Convert.ToInt32(x[2]);

                    int newTotal1 = finalNum1 + finalNum2;
                    int newTotal2 = finalNum2 + finalNum3;

                    total = Convert.ToInt32(string.Format("{0}{1}", newTotal1, newTotal2));

                }

                // This if statement is the same as above but looks for a length of 4 in case you returned
                //something like an 11 and a 12 which would return 1112% so we need further calculations to
                // return a 2 digit number.
                if (totalString.Length == 4)
                {
                    string[] x = new string[totalString.Length];
                    for (int i = 0; i < totalString.Length; i++)
                    {
                        x[i] = totalString.Substring(i, 1);
                    }

                    int finalNum1 = Convert.ToInt32(x[0]);
                    int finalNum2 = Convert.ToInt32(x[1]);
                    int finalNum3 = Convert.ToInt32(x[2]);
                    int finalNum4 = Convert.ToInt32(x[3]);

                    int newTotal1 = finalNum1 + finalNum2;
                    int newTotal2 = finalNum2 + finalNum3;
                    int newTotal3 = finalNum3 + finalNum4;

                    int nextTotal1 = newTotal1 + newTotal2;
                    int nextTotal2 = newTotal2 + newTotal3;

                    total = Convert.ToInt32(string.Format("{0}{1}", nextTotal1, nextTotal2));

                }
                totalString = total.ToString();

            }

            return total;
        }

        /// <summary>
        /// This code is ran if your predetermined string is matched. It shows a default message and score and then the real score.
        /// </summary>
        static void PreSetString()
        {
            Console.ForegroundColor = ConsoleColor.Magenta;
            Console.WriteLine("There is no couple in the world that belongs together more than you two!");
            Console.Write("\nCompatability Score: 100%\n");
            Console.ForegroundColor = ConsoleColor.White;
            Console.WriteLine();
            Console.WriteLine("Your Real Score is: ");


        }
    }
}