using System.Collections.Concurrent;
using Microsoft.Extensions.Logging;

namespace ConsoleApp2.Services;

public class TaskManager
{
    private readonly ConcurrentBag<Task> _tasks;
    private readonly ILogger _logger;

    public int RunningTaskCount => _tasks.Count(task => !task.IsCompleted);
    public IReadOnlyCollection<Task> Tasks => _tasks;
    public bool MainTaskCompleted { get; set; }

    public TaskManager(ILogger<TaskManager> logger)
    {
        _tasks = new ConcurrentBag<Task>();
        _logger = logger;
    }

    public Task<TResult> CreateTask<TResult>(Func<TResult> func)
    {
        var task = Task.Factory.StartNew(func);
        _tasks.Add(task);
        _logger.LogDebug("New task created.");
        return task;
    }
}