using System;
using System.Collections.Generic;
using System.Linq;
using YwxAppWpfDanMu.Services;

namespace YwxAppWpfDanMu.Utils
{
    public class DanMuQueueProcessor
    {
        private readonly DanMuDispatcher _dispatcher;
        private readonly Queue<Action> _queue = new Queue<Action>();
        private bool _isProcessing;

        public DanMuQueueProcessor(DanMuDispatcher dispatcher)
        {
            _dispatcher = dispatcher ?? throw new ArgumentNullException(nameof(dispatcher));
        }

        public void Enqueue(Action action)
        {
            lock (_queue)
            {
                _queue.Enqueue(action);

                if (!_isProcessing)
                {
                    _isProcessing = true;
                    _dispatcher.BeginInvoke(ProcessQueue);
                }
            }
        }

        public void EnqueueBatch(Action batchAction)
        {
            Enqueue(() =>
            {
                var actions = new List<Action>();
                batchAction();

                // 处理批处理逻辑
                lock (_queue)
                {
                    while (_queue.Count > 0)
                    {
                        actions.Add(_queue.Dequeue());
                    }
                }

                // 执行所有动作
                foreach (var action in actions)
                {
                    action();
                }
            });
        }

        private void ProcessQueue()
        {
            Action action = null;

            lock (_queue)
            {
                if (_queue.Count > 0)
                {
                    action = _queue.Dequeue();
                }
                else
                {
                    _isProcessing = false;
                    return;
                }
            }

            try
            {
                action();
            }
            catch (Exception ex)
            {
                // 记录错误日志
            }
            finally
            {
                _dispatcher.BeginInvoke(ProcessQueue);
            }
        }
    }
}