using AngleSharp.Dom;
using MES.Service.DB;
using MES.Service.Dto.webApi;
using MES.Service.Modes;
using SqlSugar;

namespace MES.Service.service.BasicData;
/// <summary>
/// 物料单位信息
/// </summary>
public class MesUnitManager : Repository<MesUnit>
{
    public bool Save(ErpUnit unit)
    {
        var entity = GetMesUnit(unit);

        return UseTransaction(db =>
        {
            switch (unit.Type)
            {
                case "0":
                    if (UpdateUnitStatus(db, entity.Id, "A"))
                        return 1;
                    break;
                case "1":
                    if (UpdateUnitStatus(db, entity.Id, "B"))
                        return 1;
                    break;
                case "3":
                    if (DeleteUnit(db, entity.Id))
                        return 1;
                    break;
                case "2":
                case "4":
                    if (InsertOrUpdate(db, entity))
                        return 1;
                    break;
                default:
                    throw new ArgumentNullException(
                        $"type没有{unit.Type}这个类型的参数");
            }

            throw new NotImplementedException("操作失败");
        }) > 0;
    }

    public bool SaveList(List<ErpUnit> units)
    {
        var list = units.Select(GetMesUnit).ToList();
        var groupBy = list.GroupBy(s => s.Type)
            .ToDictionary(g => g.Key, g => g.ToList());

        return UseTransaction(db =>
        {
            foreach (var unitGroup in groupBy)
                switch (unitGroup.Key)
                {
                    case "0":
                        if (!UpdateUnitStatusBatch(db, unitGroup.Value, "A"))
                            throw new NotImplementedException("启用失败");
                        break;
                    case "1":
                        if (!UpdateUnitStatusBatch(db, unitGroup.Value, "B"))
                            throw new NotImplementedException("禁用失败");
                        break;
                    case "3":
                        if (!DeleteUnitBatch(db, unitGroup.Value))
                            throw new NotImplementedException("删除失败");
                        break;
                    case "2":
                    case "4":
                        if (!InsertOrUpdateBatch(db, unitGroup.Value))
                            throw new NotImplementedException("同步失败");
                        break;
                    default:
                        throw new ArgumentNullException(
                            $"type没有{unitGroup.Key}这个类型的参数");
                }

            return 1;
        }) > 0;
    }

    private bool UpdateUnitStatus(SqlSugarScope db, decimal unitId,
        string status)
    {
        var result = db.Updateable<MesUnit>()
            .SetColumns(s => s.Fforbidstatus == status)
            .Where(s => s.Id == unitId).ExecuteCommand();

        if (result > 0)
            return true;

        throw new NotImplementedException(status == "A" ? "启用失败" : "禁用失败");
    }

    private bool InsertUnit(SqlSugarScope db, MesUnit entity)
    {
        var insert = db.Insertable(entity).ExecuteCommand();
        if (insert > 0)
            return true;

        throw new NotImplementedException("插入失败");
    }

    private bool DeleteUnit(SqlSugarScope db, decimal unitId)
    {
        var deleteById = db.Deleteable<MesUnit>()
            .Where(s => s.Id == unitId).ExecuteCommand();
        if (deleteById > 0)
            return true;

        throw new NotImplementedException("删除失败");
    }

    private MesUnit GetMesUnit(ErpUnit unit)
    {
        // 查找是否已存在相同编码的记录。
        var existingCustomer = Db.Queryable<MesUnit>()
            .Where(s => s.Fnumber == unit.FNumber)
            .First();

        var entity = new MesUnit
        {
            // 如果存在，使用现有的ID，后续将删除后重新插入
            // 如果不存在，设为0，InsertOrUpdate方法将生成新ID
            Id = existingCustomer?.Id ?? 0,
            //Id = Convert.ToDecimal(unit.Id),
            Fnumber = unit.FNumber,
            Fname = unit.FName,
            Funitgroupid = unit.FUnitGroupId,
            Fconvertdenominator = Convert.ToDouble(unit.ConvertDenominator),
            Fcurrentunitid = unit.FCurrentUnitId,
            Fconvertnumerator = unit.FConvertNumerator,
            Fbaseunit = unit.FBaseUnit,
            Froundtype = unit.FRoundType,
            Fprecision = unit.FPrecision,
            Fdescription = unit.FDescription,
            Fforbidstatus = unit.FForbidStatus,
            // 如果存在，使用现有的CreateDate，后续将删除后重新插入
            // 如果不存在，设为当前时间
            CreateDate = existingCustomer?.CreateDate ?? DateTime.Now,
            LastupdateDate = DateTime.Now,
            Company = "1000",
            Factory = "1000",
            Type = unit.Type
        };

        // ERP: 0=未禁用, 1=禁用
        // MES: A=未禁用, B=禁用
        if (string.IsNullOrEmpty(unit.FForbidStatus))
        {
            entity.Fforbidstatus = "A";
        }
        else
        {
            //我期望的值是A=否,B=是
            //实际给我的值是0或1，我希望为我转换从A和B的方式
            entity.Fforbidstatus = unit.FForbidStatus == "1" ? "B" : "A";
        }

        return entity;
    }

    /// <summary>
    /// 生成新的ID，确保不重复
    /// </summary>
    private decimal GenerateNewId()
    {
        // 处理空表的情况，从1开始
        var maxId = Db.Queryable<MesUnit>().Max(x => (decimal?)x.Id) ?? 0;
        var newId = maxId + 1;

        // 双重检查，确保生成的ID不存在
        while (Db.Queryable<MesUnit>().Where(x => x.Id == newId).Any())
        {
            newId++;
        }

        return newId;
    }

    private bool UpdateUnitStatusBatch(SqlSugarScope db, List<MesUnit> unitList,
        string status)
    {
        var ids = unitList.Select(it => it.Id).ToArray();
        var result = db.Updateable<MesUnit>()
            .SetColumns(s => s.Fforbidstatus == status)
            .Where(s => ids.Contains(s.Id)).ExecuteCommand();

        if (result > 0)
            return true;

        throw new NotImplementedException(status == "A" ? "启用失败" : "禁用失败");
    }

    private bool InsertUnitBatch(SqlSugarScope db, List<MesUnit> unitList)
    {
        var insertRange = db.Insertable(unitList).ExecuteCommand();
        if (insertRange > 0)
            return true;

        throw new NotImplementedException("插入失败");
    }

    private bool DeleteUnitBatch(SqlSugarScope db, List<MesUnit> unitList)
    {
        var ids = unitList.Select(it => it.Id).ToArray();
        var deleteByIds = db.Deleteable<MesUnit>()
            .Where(s => ids.Contains(s.Id)).ExecuteCommand();
        return deleteByIds > 0;
    }

    /// <summary>
    /// 同步物料单位信息new_0/4
    /// </summary>
    /// <param name="db"></param>
    /// <param name="entity"></param>
    /// <returns></returns>
    private bool InsertOrUpdate(SqlSugarScope db, MesUnit entity)
    {
        if (entity.Id == 0)
        {
            // 新增情况：生成新ID并插入
            var newId = GenerateNewId();
            entity.Id = newId;
            return db.Insertable(entity).ExecuteCommand() > 0;
        }
        else
        {
            // 更新情况：删除后重新插入，保持原有ID
            var originalId = entity.Id;

            // 先删除原记录（如果存在）
            db.Deleteable<MesUnit>().Where(s => s.Id == originalId).ExecuteCommand();

            // 重新插入，保持原有ID
            entity.Id = originalId;
            return db.Insertable(entity).ExecuteCommand() > 0;
        }
    }

    /// <summary>
    /// 同步物料单位信息old_0/4
    /// </summary>
    /// <param name="db"></param>
    /// <param name="entity"></param>
    /// <returns></returns>
    //private bool InsertOrUpdate(SqlSugarScope db, MesUnit entity)
    //{
    //    db.Deleteable<MesUnit>()
    //        .Where(s => s.Id == entity.Id).ExecuteCommand();
    //    var insert = db.Insertable(entity).ExecuteCommand();
    //    return insert > 0;
    //}

    private bool InsertOrUpdateBatch(SqlSugarScope db, List<MesUnit> unitList)
    {
        return unitList.All(entity => InsertOrUpdate(db, entity));
    }
}