06. Vehicle Catalogue

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

namespace VehicleCatalogue
{
    class Vehicle
    {
        public Vehicle(string type, string model, string color, int horsepower)
        {
            this.Type = type;
            this.Model = model;
            this.Color = color;
            this.Horsepower = horsepower;
        }

        public string Type { get; set; }
        public string Model { get; set; }
        public string Color { get; set; }

        public int Horsepower { get; set; }

    }

    class Program
    {
        public static void Main()
        {
            List<Vehicle> vehicles = new List<Vehicle>();

            string command;

            while ((command = Console.ReadLine()) != "End")
            {
                string[] info = command.Split(" ");

                string type = info[0];
                string model = info[1];
                string color = info[2];
                string horsepower = info[3];

                vehicles.Add(new Vehicle(type, model, color, int.Parse(horsepower)));
            }

            while ((command = Console.ReadLine()) != "Close the Catalogue")
            {
                int index = IndexFinder(vehicles, command);
                string type = vehicles[index].Type;
                Console.WriteLine($"Type: {type[0].ToString().ToUpper() + type.Substring(1)}\nModel: {vehicles[index].Model}\nColor: {vehicles[index].Color}\nHorsepower: {vehicles[index].Horsepower}");
            }

            var cars = vehicles.Where(x => x.Type == "car");
            var trucks = vehicles.Where(x => x.Type == "truck");

            double carsHorsepower = cars.Count() > 0 ? (double)(cars.Select(x => x.Horsepower).ToList().Sum()) / cars.Count() : 0;
            double trucksHorsepower = trucks.Count() > 0 ? (double)(trucks.Select(x => x.Horsepower).ToList().Sum()) / trucks.Count() : 0;

            Console.WriteLine($"Cars have average horsepower of: {carsHorsepower:f2}.");
            Console.WriteLine($"Trucks have average horsepower of: {trucksHorsepower:f2}.");
        }

        static int IndexFinder(List<Vehicle> v, string m)
        {
            return v.FindIndex(x => x.Model == m);
        }
    }
}