using Infrastructure.Attribute;
using JinianNet.JNTemplate;
using MDM.Attribute;
using MDM.Model.Material;
using MDM.Model.Process;
using MDM.Models.Flow;
using MDM.Models.Session;
using MDM.Service;
using NPOI.SS.Formula.Functions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MDM.Services.Flows
{
    /// <summary>
    /// 普通流程功能函数
    /// </summary>
  // [AppService(ServiceType = typeof(CommonFlowService), ServiceLifetime = LifeTime.Singleton)]
    public class CommonFlowService : BaseService<Object>
    {

        /// <summary>
        /// 普通入站站流程
        /// </summary>
        /// <returns></returns>
        [RIZOFlow(FlowType = "common_inbound_flow")]
        public  InStationApplyResult CommonInboundStationFlow(string operationCode, string processCode)
        {
            // 参数验证
            if (string.IsNullOrWhiteSpace(operationCode) || string.IsNullOrWhiteSpace(processCode))
            {
                return InStationApplyResult.InvalidParameters;
            }

            // 获取产品是否开工
            var product = GetProductBySn(processCode);
            if (product == null)
            {
                // 产品未开工，不得入站
                return InStationApplyResult.ProductNotStartWork;
            }

            // 判断正常件还是返工件,完工件

            if (product.ProductStatus == 2)
            {
                // 完工件不得入站
                return InStationApplyResult.ProductCompleted;
            }

            // 返工件进行 进站处理
            if (product.ProductStatus == 3)
            {
                // 返工件入站
                return InStationApplyResult.Success;
            }

            // 正常件进行 进站处理
            if (product.ProductStatus == 1)
            {
                return HandleInProductionProduct(product, operationCode);
            }

            return InStationApplyResult.Success;
        }

        private ProductLifecycle GetProductBySn(string productSn)
        {
            return Context.Queryable<ProductLifecycle>()
                .Where(it => it.ProductSN == productSn)
                .First();
        }

        private InStationApplyResult HandleInProductionProduct(ProductLifecycle product, string operationCode)
        {
            // 检查是否重复进站
            if (IsRepeatInStation(product.ProductSN, operationCode))
            {
                //重复入站，禁止入站
                return InStationApplyResult.RepeatInStation;
            }

            // 获取工序信息
            var processOperation = GetProcessOperation(product.RoutingCode, operationCode);
            if (processOperation == null)
            {
                // 工序不存在 异常
                return InStationApplyResult.OperationNotFound;
            }

            // 检查是否可以跳站
            if (processOperation.IsSkippable == 1)
            {
                // 允许跳站，直接入站成功
                return InStationApplyResult.Success;
            }

            // 检查上一工序状态
            return CheckPreviousOperationStatus(product.ProductSN, product.RoutingCode, processOperation.OperationSeq);
        }

        private bool IsRepeatInStation(string productSn, string operationCode)
        {
            return Context.Queryable<ProductPassstationRecord>()
                .Where(it => it.ProductSN == productSn && it.OperationCode == operationCode)
                .Any();
        }

        private ProcessOperation GetProcessOperation(string routingCode, string operationCode)
        {
            return Context.Queryable<ProcessOperation>()
                .Where(it => it.FkRoutingCode == routingCode && it.OperationCode == operationCode)
                .First();
        }

        private InStationApplyResult CheckPreviousOperationStatus(string productSn, string routingCode, int? currentOperationSeq)
        {
            // 获取上一个工序
            var lastOperation = Context.Queryable<ProcessOperation>()
                .Where(it => it.FkRoutingCode == routingCode)
                .Where(it => it.OperationSeq < currentOperationSeq)
                .OrderByDescending(it => it.OperationSeq)
                .First();

            if (lastOperation == null)
            {
                return InStationApplyResult.PreviousOperationNotFound;
            }

            // 获取上一工序的通过记录状态
            var lastOperationStatus = Context.Queryable<ProductPassstationRecord>()
                .Where(it => it.ProductSN == productSn && it.OperationCode == lastOperation.OperationCode)
                .Select(it => it.ProuductStatus)
                .First();

            return lastOperationStatus switch
            {
                // 上一个工序未入站,禁止入站
                null => InStationApplyResult.PreviousOperationNotStarted,
                //  上一个工序进站但未出站,禁止入站
                1 => InStationApplyResult.PreviousOperationInProgress,
                // 上一个工序已完成,允许入站
                2 => InStationApplyResult.Success,
                // 上一个工序有异常,禁止入站
                3 => InStationApplyResult.PreviousOperationHasException,
                _ => InStationApplyResult.UnknownStatus
            };
        }
    }
}