using Kean.Application.Command.Interfaces;
using Kean.Application.Command.ViewModels;
using Kean.Domain;
using Kean.Domain.Wcs.Commands;
using Orleans;
using System.Linq;
using System.Threading.Tasks;

namespace Kean.Application.Command.Implements
{
    /// <summary>
    /// 控制交互颗粒
    /// </summary>
    internal class WcsGrain : Grain, IWcsGrain
    {
        private readonly ICommandBus _bus; // 命令总线
        private readonly INotification _notifications; // 总线通知

        /// <summary>
        /// 依赖注入
        /// </summary>
        public WcsGrain(
            ICommandBus bus,
            INotification notifications)
        {
            _bus = bus;
            _notifications = notifications;
        }

        /*
         * 实现 Kean.Application.Command.Interfaces.IWcsService.AcceptInput 方法
         */
        public async Task<(AcceptInputCommand Fallback, Failure Failure)> AcceptInput(AcceptInputCommand command)
        {
            DeactivateOnIdle();
            await _bus.Execute(command);
            return (command.Fallback, _notifications.FirstOrDefault());
        }

        /*
         * 实现 Kean.Application.Command.Interfaces.IWcsService.SyncOutput 方法
         */
        public async Task<Failure> SyncOutput(SyncOutputCommand command)
        {
            DeactivateOnIdle();
            await _bus.Execute(command);
            return _notifications.FirstOrDefault();
        }

        /*
         * 实现 Kean.Application.Command.Interfaces.IWcsService.SyncStation 方法
         */
        public async Task<Failure> SyncStation(SyncStationCommand command)
        {
            DeactivateOnIdle();
            await _bus.Execute(command);
            return _notifications.FirstOrDefault();
        }

    }
}