using System.Globalization;
using System.Text.RegularExpressions;

List<User> users = new();

while (Console.In.ReadLine() is { } entry) {
	if (!entry.Contains("\"cdn.chaos.stream\" \"GET /hls/"))
		continue;
	if (!entry.Contains(".ts HTTP"))
		continue;

	var match = Regex.Match(entry, "^\\[(.*?)\\].*?GET \\/hls\\/(.+?)-(\\d+)\\.ts HTTP\\/\\d\\.\\d\" 200");
	if (!match.Success)
		continue;

	var timestamp  = match.Groups[1].Value;
	var streamkey  = match.Groups[2].Value;
	var fragmentId = match.Groups[3].Value;

	if (users.All(p => p.Streamkey != streamkey))
		users.Add(new User(streamkey));

	var user = users.First(p => p.Streamkey == streamkey);

	if (user.Fragments.All(p => p.Id != fragmentId))
		user.Fragments.Add(new Fragment(timestamp, fragmentId));
	else
		user.Fragments.First(p => p.Id == fragmentId).Count++;

	UpdateScreen();
}

void UpdateScreen() {
	var output = new List<(string streamkey, int count)>();
	foreach (var user in users.OrderBy(p => p.Streamkey)) {
		user.Fragments.RemoveAll(p => p.Time < DateTime.Now - TimeSpan.FromMinutes(1));
		if (user.Fragments.Any())
			output.Add((user.Streamkey, user.Fragments.TakeLast(6).First().Count));
	}

	var paddingOffset = users.Select(p => p.Streamkey).Aggregate("", (max, cur) => max.Length > cur.Length ? max : cur).Length;
	Console.Clear();
	Console.WriteLine($"Viewcount as of {DateTime.Now:yyyy-MM-dd HH:mm:ss}");
	foreach (var item in output) {
		Console.WriteLine($"{item.streamkey.PadRight(paddingOffset)} - {item.count}");
	}
}

internal class User {
	public List<Fragment> Fragments = new();
	public string         Streamkey;

	public User(string streamkey) {
		Streamkey = streamkey;
	}
}

internal class Fragment {
	public string   Id;
	public DateTime Time;
	public int      Count = 1;

	public Fragment(string timestamp, string id) {
		Time = DateTime.ParseExact(timestamp, "dd/MMM/yyyy:HH:mm:ss K", DateTimeFormatInfo.InvariantInfo);
		Id   = id;
	}
}