07.AndreyAndBilliardObjects

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

namespace _07.AndreyAndBilliardObjects_and_Classes___Exercises
{
    class Program
    {
        static void Main(string[] args)
        {
            int countProd = int.Parse(Console.ReadLine());
            var Products = new Dictionary<string, decimal>();
            var listOfCustomers = new List<Customer>();
            for (int i = 0; i < countProd; i++)
            {
                var inputProd = Console.ReadLine().Split('-');
                if (!Products.ContainsKey(inputProd[0]))
                {
                    Products.Add(inputProd[0], decimal.Parse(inputProd[1]));
                }
                else
                {
                    Products[inputProd[0]] = decimal.Parse(inputProd[1]);
                }
            }

            var inputCustomer = Console.ReadLine().Split('-');

            while (inputCustomer[0] != "end of clients")
            {
                string currClient = inputCustomer[0];
                string[] currProducts = inputCustomer[1].Split(',');
                Customer currCustomer = new Customer
                {
                    Name = currClient,
                    Product = new Dictionary<string, int>(),

                };
                currCustomer.Product.Add(currProducts[0], int.Parse(currProducts[1]));

                if (!Products.ContainsKey(currProducts[0]))
                {
                    inputCustomer = Console.ReadLine().Split('-');
                    continue;
                }

                if (listOfCustomers.Any(n => n.Name == currClient))
                {
                    Customer existingCustomer = listOfCustomers.First(k => k.Name == currClient);

                    if (!existingCustomer.Product.ContainsKey(currProducts[0]))
                    {
                        existingCustomer.Product[currProducts[0]] = 0;
                    }

                    existingCustomer.Product[currProducts[0]] += int.Parse(currProducts[1]);
                }
                else
                {
                    listOfCustomers.Add(currCustomer);
                }
                inputCustomer = Console.ReadLine().Split('-');
            }

            foreach (var cust in listOfCustomers)
            {
                foreach (var item in cust.Product)
                {
                    foreach (var itemProd in Products)
                    {
                        if (itemProd.Key == item.Key)
                        {
                            cust.Bill += item.Value * itemProd.Value;
                        }
                    }
                }
            }

            decimal totalBill = 0;

            var sortedList = listOfCustomers
                .OrderBy(a => a.Name);
            foreach (var cust in sortedList)
            {
                Console.WriteLine(cust.Name);
                foreach (var item in cust.Product)
                {
                    Console.WriteLine($"-- {item.Key} - {item.Value}");
                }
                Console.WriteLine($"Bill: {cust.Bill:f2}");
                totalBill += cust.Bill;
            }
            Console.WriteLine($"Total bill: {totalBill:f2}");

        }
    }
}