using System;
using System.Collections;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Linq;
using System.Data.Linq;
using System.Web.Security;
using System.Web.UI.WebControls;
using Model;
using BLL;
using System.Collections.Generic;

namespace BLL
{
    public static class WbsDetailService
    {
        /// <summary>
        /// 根据Id获取一个WBS明细信息
        /// </summary>
        /// <param name="wbsDetailId">WBS明细Id</param>
        public static Model.WbsDetail GetWbsDetailByWbsDetailId(string wbsDetailId)
        {
            return Funs.DB.WbsDetail.FirstOrDefault(e => e.WbsDetailId == wbsDetailId);
        }

        /// <summary>
        /// 根据ToWbs判断是否存在WBS明细信息
        /// </summary>
        /// <param name="toWbs">toWbs</param>
        public static bool IsExitWbsDetailByToWbs(string toWbs)
        {
            return (from x in Funs.DB.WbsDetail where x.ToWbs == toWbs select x).Count() > 0;
        }

        /// <summary>
        /// 根据toWbs和toFlag和年及月获取对应WBS明细信息
        /// </summary>
        /// <param name="toWbs">对应wbsId</param>
        /// <param name="toFlag">对应标志</param>
        /// <param name="years">年</param>
        /// <param name="months">月</param>
        public static Model.WbsDetail GetWbsDetailByWbsFlagYearMonth(string toWbs, int toFlag, DateTime months)
        {
            return (from x in Funs.DB.WbsDetail where x.ToWbs == toWbs && x.ToFlag == toFlag && x.Months == months select x).FirstOrDefault();
        }

        public static Model.WbsDetail GetWbsDetailByToWbsFlag(string toWbs, int toFlag)
        {
            return (from x in Funs.DB.WbsDetail where x.ToWbs == toWbs && x.ToFlag == toFlag select x).FirstOrDefault();
        }

        /// <summary>
        /// 根据ToWbs和月份判断是否存在未审核WBS明细信息
        /// </summary>
        /// <param name="toWbs">toWbs</param>
        public static bool IsExitNoCompleteApproveWbsDetailByToWbs(string toWbs, int toFlag, DateTime months)
        {
            bool result;
            var q = Funs.DB.WbsDetail.FirstOrDefault(e => e.ToWbs == toWbs && e.ToFlag == toFlag && e.Months == months);
            if (q != null)
            {
                if (q.IsCompleteApprove == null && (q.CompleteValue != null || q.RealValue != null))
                {
                    result = true;
                }
                else
                {
                    result = false;
                }
            }
            else
            {
                result = false;
            }
            return result;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="toWbs"></param>
        /// <param name="toFlag"></param>
        /// <param name="months"></param>
        /// <returns></returns>
        public static bool IsExitWbsDetailByToWbsOrMonth(string toWbs, int toFlag, DateTime months)
        {
            bool result = false;
            var q = Funs.DB.WbsDetail.FirstOrDefault(e => e.ToWbs == toWbs && e.ToFlag == toFlag && e.Months == months);
            if (q != null)
            {
                result = true;
            }
            return result;
        }

        /// <summary>
        /// 根据年及月获取之前月份的对应WBS明细信息集合（含当月）
        /// </summary>
        /// <param name="years">年</param>
        /// <param name="months">月</param>
        public static List<Model.WbsDetail> GetTotalWbsDetailsByYearMonth2(string toWbs, DateTime months)
        {
            return (from x in Funs.DB.WbsDetail where x.ToWbs == toWbs && x.Months <= months select x).ToList();
        }

        /// <summary>
        /// 根据ToWbs月获取所有月份的对应WBS明细信息集合
        /// </summary>
        /// <param name="toWbs">toWbs</param>
        public static List<Model.WbsDetail> GetTotalWbsDetailsByToWbs(string toWbs)
        {
            return (from x in Funs.DB.WbsDetail where x.ToWbs == toWbs orderby x.Months select x).ToList();
        }

        /// <summary>
        /// 根据年及月获取之前月份的对应WBS明细信息集合（含当月）
        /// </summary>
        /// <param name="years">年</param>
        /// <param name="months">月</param>
        public static List<Model.WbsDetail> GetTotalWbsDetailsByYearMonth(string toWbs, int toFlag, DateTime months)
        {
            return (from x in Funs.DB.WbsDetail where x.ToWbs == toWbs && x.ToFlag == toFlag && x.Months <= months select x).ToList();
        }

        /// <summary>
        /// 增加WBS明细
        /// </summary>
        /// <param name="user">WBS明细</param>
        public static void AddWbsDetail(Model.WbsDetail wbsDetail)
        {
            Model.SGGLDB db = Funs.DB;
            Model.WbsDetail newWbsDetail = new Model.WbsDetail();
            newWbsDetail.WbsDetailId = wbsDetail.WbsDetailId;
            newWbsDetail.ToWbs = wbsDetail.ToWbs;
            newWbsDetail.ToFlag = wbsDetail.ToFlag;
            newWbsDetail.Way = wbsDetail.Way;
            newWbsDetail.Months = wbsDetail.Months;
            newWbsDetail.EngineeringQuantity = wbsDetail.EngineeringQuantity;
            newWbsDetail.PlanValue = wbsDetail.PlanValue;
            newWbsDetail.PlanValueRate = wbsDetail.PlanValueRate;
            newWbsDetail.CompleteValue = wbsDetail.CompleteValue;
            newWbsDetail.CompleteValueRate = wbsDetail.CompleteValueRate;
            newWbsDetail.RealValue = wbsDetail.RealValue;
            newWbsDetail.RealValueRate = wbsDetail.RealValueRate;

            db.WbsDetail.InsertOnSubmit(newWbsDetail);
            db.SubmitChanges();
        }

        /// <summary>
        /// 修改WBS明细
        /// </summary>
        /// <param name="user">WBS明细</param>
        public static void UpdateWbsDetail(Model.WbsDetail wbsDetail)
        {
            Model.SGGLDB db = Funs.DB;
            Model.WbsDetail newWbsDetail = db.WbsDetail.First(e => e.WbsDetailId == wbsDetail.WbsDetailId);

            newWbsDetail.EngineeringQuantity = wbsDetail.EngineeringQuantity;
            newWbsDetail.PlanValue = wbsDetail.PlanValue;
            newWbsDetail.PlanValueRate = wbsDetail.PlanValueRate;
            newWbsDetail.CompleteValue = wbsDetail.CompleteValue;
            newWbsDetail.CompleteValueRate = wbsDetail.CompleteValueRate;
            newWbsDetail.RealValue = wbsDetail.RealValue;
            newWbsDetail.RealValueRate = wbsDetail.RealValueRate;
            newWbsDetail.IsCompleteApprove = wbsDetail.IsCompleteApprove;
            newWbsDetail.IsRealApprove = wbsDetail.IsRealApprove;

            db.SubmitChanges();
        }

        /// <summary>
        /// 根据Id删除WBS明细信息
        /// </summary>
        /// <param name="userId"></param>
        public static void DeleteWbsDetail(string wbsDetailId)
        {
            Model.SGGLDB db = Funs.DB;
            Model.WbsDetail ins = db.WbsDetail.First(e => e.WbsDetailId == wbsDetailId);
            db.WbsDetail.DeleteOnSubmit(ins);
            db.SubmitChanges();
        }

        /// <summary>
        /// 根据toWbs删除WBS明细信息
        /// </summary>
        /// <param name="userId"></param>
        public static void DeleteWbsDetailByToWbs(string toWbs)
        {
            Model.SGGLDB db = Funs.DB;
            var details = from x in db.WbsDetail where x.ToWbs == toWbs select x;
            if (details.Count() > 0)
            {
                db.WbsDetail.DeleteAllOnSubmit(details);
                db.SubmitChanges();
            }
        }

        /// <summary>
        /// 根据月份总数和当前是第几月及总计划费用获取当前月份的计划值
        /// </summary>
        /// <param name="monthCount">月份总数</param>
        /// <param name="monthNum">当前是第几月</param>
        /// <param name="weightMoney">总计划费用</param>
        /// <returns>当前月份的计划值</returns>
        public static decimal GetMonthPlanValueByMonthCountAndMonthNumAndWeightMonth(int monthCount, int monthNum, decimal weightMoney)
        {
            decimal monthValue = 0;
            int halfLevelCount = 0;    //一半的阶级总数，比如12个月，则一半共有21个阶级，共21X
            int levelCount = 0;     //总共有多少阶级，比如12个月，则共有42个阶级，共42X
            int count = 0;          //阶级绝对数，比如12个月，则共分为6个阶级，1X,2X,3X,4X,5X,6X
            decimal oneValue = 0;     //每一阶级即X的值
            if (monthCount % 2 == 0)   //月份总数为偶数
            {
                count = monthCount / 2;
                for (int i = 1; i < count + 1; i++)
                {
                    halfLevelCount += i;
                }
                levelCount = halfLevelCount * 2;
                //oneValue = decimal.Round(Convert.ToDecimal(weightMoney / levelCount), 2);
                oneValue = decimal.Round(Convert.ToDecimal(Math.Floor((weightMoney * 100) / levelCount) / 100), 2);//不进行四舍五入

                if (monthNum > count)    //当前月份大于中间的月份，比如12个月，当前为第8月，则阶级为5X
                {
                    monthNum = monthCount - monthNum + 1;
                }
                monthValue = monthNum * oneValue;
            }
            else    //月份总数为奇数
            {
                count = (monthCount - 1) / 2;
                for (int i = 1; i < count + 1; i++)
                {
                    halfLevelCount += i;
                }
                levelCount = halfLevelCount * 2 + (count + 1);

                //oneValue = decimal.Round(Convert.ToDecimal(weightMoney / levelCount), 2);
                oneValue = decimal.Round(Convert.ToDecimal(Math.Floor((weightMoney * 100) / levelCount) / 100), 2);

                if (monthNum > (count + 1))    //当前月份大于中间的月份，比如13个月，当前为第8月，则阶级为6X
                {
                    monthNum = monthCount - monthNum + 1;
                }
                monthValue = monthNum * oneValue;
            }
            return monthValue;
        }
    }
}