using Kean.Domain.Wcs.Commands;
using Kean.Domain.Wcs.Models;
using Kean.Domain.Wcs.Repositories;
using Kean.Domain.Wcs.SharedServices.Proxies;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;

namespace Kean.Domain.Wcs.CommandHandlers
{
    /// <summary>
    /// 扫描输入命令处理程序
    /// </summary>
    public sealed class ScanOutputsCommandHandler : CommandHandler<ScanOutputsCommand>
    {
        private readonly IWcsRepository _wcsRepository; // 控制仓库
        private readonly TaskProxy _taskProxy; // 任务代理

        /// <summary>
        /// 依赖注入
        /// </summary>
        public ScanOutputsCommandHandler(
            IWcsRepository wcsRepository,
            TaskProxy taskProxy)
        {
            _wcsRepository = wcsRepository;
            _taskProxy = taskProxy;
        }

        /// <summary>
        /// 处理程序
        /// </summary>
        public override async Task Handle(ScanOutputsCommand command, CancellationToken cancellationToken)
        {
            var queue = new Queue<Output>();
            foreach (var item in await _wcsRepository.GetOutputs())
            {
                if (item.State != item.PreState)
                {
                    if (item.State == 995 && item.PreState == 996)
                    {
                        await _wcsRepository.SyncOutput(item.Id, item.State);
                        await _taskProxy.SetTaskState(item.Task, string.Empty, "Running", string.Empty, "Task");
                    }
                    else
                    {
                        queue.Enqueue(item);
                    }
                }
                else if (item.State == 900 || item.State == 999)
                {
                    await _wcsRepository.RemoveOutput(item.Id);
                    await _wcsRepository.LogOutput(item);
                }
            }
            Output(nameof(command.UnsyncedOutputs), queue);
        }
    }
}