Program.cs

// #1 the ourAnimals array will store the following: 
string animalSpecies = "";
string animalID = "";
string animalAge = "";
string animalPhysicalDescription = "";
string animalPersonalityDescription = "";
string animalNickname = "";
string suggestedDonation = "";

// #2 variables that support data entry
int maxPets = 8;
string? readResult;
string menuSelection = "";
decimal decimalDonation = 0.00m;

// #3 array used to store runtime data, there is no persisted data
string[,] ourAnimals = new string[maxPets, 7];

// #4 create sample data ourAnimals array entries
for (int i = 0; i < maxPets; i++)
{
    switch (i)
    {
        case 0:
            animalSpecies = "dog";
            animalID = "d1";
            animalAge = "2";
            animalPhysicalDescription = "medium sized cream colored female golden retriever weighing about 45 pounds. housebroken.";
            animalPersonalityDescription = "loves to have her belly rubbed and likes to chase her tail. gives lots of kisses.";
            animalNickname = "lola";
            suggestedDonation = "85.00";
            break;

        case 1:
            animalSpecies = "dog";
            animalID = "d2";
            animalAge = "9";
            animalPhysicalDescription = "large reddish-brown male golden retriever weighing about 85 pounds. housebroken.";
            animalPersonalityDescription = "loves to have his ears rubbed when he greets you at the door, or at any time! loves to lean-in and give doggy hugs.";
            animalNickname = "gus";
            break;

        case 2:
            animalSpecies = "cat";
            animalID = "c3";
            animalAge = "1";
            animalPhysicalDescription = "small white female weighing about 8 pounds. litter box trained.";
            animalPersonalityDescription = "friendly";
            animalNickname = "snow";
            break;

        case 3:
            animalSpecies = "cat";
            animalID = "c4";
            animalAge = "3";
            animalPhysicalDescription = "Medium sized, long hair, yellow, female, about 10 pounds. Uses litter box.";
            animalPersonalityDescription = "A people loving cat that likes to sit on your lap.";
            animalNickname = "Lion";
            break;

        default:
            animalSpecies = "";
            animalID = "";
            animalAge = "";
            animalPhysicalDescription = "";
            animalPersonalityDescription = "";
            animalNickname = "";
            break;
    }

    ourAnimals[i, 0] = "ID #: " + animalID;
    ourAnimals[i, 1] = "Species: " + animalSpecies;
    ourAnimals[i, 2] = "Age: " + animalAge;
    ourAnimals[i, 3] = "Nickname: " + animalNickname;
    ourAnimals[i, 4] = "Physical description: " + animalPhysicalDescription;
    ourAnimals[i, 5] = "Personality: " + animalPersonalityDescription;
    if (!decimal.TryParse(suggestedDonation, out decimalDonation))
    {
        decimalDonation = 45.00m; // if suggestedDonation NOT a number, default to 45.00
    }
    ourAnimals[i, 6] = $"Suggested Donation: {decimalDonation:C2}";
}

// #5 display the top-level menu options
do
{
    // NOTE: the Console.Clear method is throwing an exception in debug sessions
    Console.Clear();

    Console.WriteLine("Welcome to the Contoso PetFriends app. Your main menu options are:");
    Console.WriteLine(" 1. List all of our current pet information");
    Console.WriteLine(" 2. Display all dogs with a specified characteristic");
    Console.WriteLine();
    Console.WriteLine("Enter your selection number (or type Exit to exit the program)");

    readResult = Console.ReadLine();
    if (readResult != null)
    {
        menuSelection = readResult.ToLower();
    }

    // use switch-case to process the selected menu option
    switch (menuSelection)
    {
        case "1":
            // list all pet info
            for (int i = 0; i < maxPets; i++)
            {
                if (ourAnimals[i, 0] != "ID #: ")
                {
                    Console.WriteLine();
                    for (int j = 0; j < 7; j++)
                    {
                        Console.WriteLine(ourAnimals[i, j]);
                    }
                }
            }
            Console.WriteLine("\n\rPress the Enter key to continue");
            readResult = Console.ReadLine();

            break;

        case "2":
            // Display all dogs with a specified characteristic
            string dogCharacteristic = "";

            while (dogCharacteristic == "")
            {
                // have the user enter physical characteristics to search for
                Console.WriteLine($"\nEnter the search terms separated by commas");
                readResult = Console.ReadLine();
                if (readResult != null)
                {
                    dogCharacteristic = readResult.Trim();
                }
            }

            string[] terms = dogCharacteristic
                .Split(',', StringSplitOptions.RemoveEmptyEntries)
                .Select(t => t.Trim().ToLower())
                .Where(t => t.Length > 0)
                .ToArray();

            while (terms.Length == 0)
            {
                Console.WriteLine("Please enter at least one non-empty search term.");
                readResult = Console.ReadLine();
                dogCharacteristic = (readResult ?? "").Trim();
                terms = dogCharacteristic
                    .Split(',', StringSplitOptions.RemoveEmptyEntries)
                    .Select(t => t.Trim().ToLower())
                    .Where(t => t.Length > 0)
                    .ToArray();
            }

            Array.Sort(terms, StringComparer.Ordinal);

            // >>> Clean spinner countdown: rotates icons, ticks down 2 → 1 → 0 <<<
            string[] spinnerIcons = { "|", "/", "-", "\\" };
            int spinSeconds = Math.Max(1, terms.Length);
            int termIndex = -1;
            int iconIndex = 0;

            for (int remaining = spinSeconds; remaining >= 0; remaining--)
            {
                // move to the next search term each second
                termIndex = (termIndex + 1) % terms.Length;
                string currentTerm = terms[termIndex];

                // spin for one second
                int framesPerSecond = 6;
                for (int f = 0; f < framesPerSecond; f++)
                {
                    string countdown = (remaining == 0) ? "0" : $"{remaining}/{spinSeconds}";
                    Console.Write($"\rsearching for {currentTerm} {spinnerIcons[iconIndex % spinnerIcons.Length]} {countdown}   ");
                    iconIndex++;
                    System.Threading.Thread.Sleep(1000 / framesPerSecond);
                }
            }

            // clear the spinner line after finishing
            Console.Write("\r" + new string(' ', Console.WindowWidth) + "\r");

            bool noMatchesDog = true;
            string dogDescription = "";

            // #6 loop through the ourAnimals array to search for matching animals
            for (int i = 0; i < maxPets; i++)
            {
                if (ourAnimals[i, 1].Contains("dog"))
                {
                    // #7 Search combined descriptions and report results
                    dogDescription = ourAnimals[i, 4] + "\n" + ourAnimals[i, 5];
                    string combinedLower = dogDescription.ToLower();

                    bool matchedThisDog = false;
                    foreach (var term in terms)
                    {
                        if (combinedLower.Contains(term))
                        {
                            string nickLabeled = ourAnimals[i, 3] ?? "";
                            string dogName = nickLabeled.StartsWith("Nickname: ", StringComparison.OrdinalIgnoreCase)
                                ? nickLabeled.Substring("Nickname: ".Length)
                                : nickLabeled;

                            Console.WriteLine($"\nOur dog {dogName} is a match for your search for {term}!");
                            matchedThisDog = true;
                        }
                    }

                    if (matchedThisDog)
                    {
                        Console.WriteLine(ourAnimals[i, 3]);
                        Console.WriteLine(dogDescription);
                        noMatchesDog = false;
                    }
                }
            }

            if (noMatchesDog)
            {
                Console.WriteLine("No matches found for any available dogs");
            }
            Console.WriteLine("Press the Enter key to continue.");
            readResult = Console.ReadLine();
            break;

        default:
            break;
    }

} while (menuSelection != "exit");