MeTube Statistics - Exam-Dictionary-28Oct18

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

namespace _04MeTubeStatistics
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, int> videoViews = new Dictionary<string, int>();
            Dictionary<string, int> videoLikes = new Dictionary<string, int>();

            while (true)
            {
                string command = Console.ReadLine();

                if (command == "stats time")
                {
                    break;
                }

                if (command.Contains('-'))
                {
                    string[] tokens = command.Split('-');

                    string video = tokens[0];
                    int views = int.Parse(tokens[1]);

                    if (!videoViews.ContainsKey(video))
                    {
                        videoViews[video] = 0;
                        videoLikes[video] = 0;
                    }

                    videoViews[video] += views;
                }
                else if (command.Contains(':'))
                {
                    string[] tokens = command.Split(':');

                    string action = tokens[0];
                    string video = tokens[1];

                    if (action == "like")
                    {
                        if (!videoLikes.ContainsKey(video))
                        {

                           videoLikes.Add(video, 1);
                        }
                        else
                        {
                            videoLikes[video] += 1;
                        }
                    }
                    else if (action == "dislike")
                    {
                        if (!videoLikes.ContainsKey(video))
                        {
                            videoLikes.Add(video, -1);
                        }
                        else
                        {

                           videoLikes[video] -= 1;
                        }
                    }
                }
            }

            string criterion = Console.ReadLine();

            if (criterion== "by views")
            {
                foreach (var kvp in videoViews.OrderByDescending(x=>x.Value))
                {
                    string video = kvp.Key;
                    int views = kvp.Value;
                    int likes = videoLikes[video];

                    Console.WriteLine($"{video} - {views} views - {likes} likes");
                }
            }
            else
            {
                foreach (var kvp in videoLikes.OrderByDescending(x=>x.Value))
                {
                    string video = kvp.Key;
                    int likes = kvp.Value;
                    int views = videoViews[video];

                    Console.WriteLine($"{video} - {views} views - {likes} likes");
                }
            }
        }
    }
}