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

namespace MES.Service.service.BasicData;

public class MesItemsManager : Repository<MesItems>
{
    public bool Save(ErpItems item)
    {
        var entity = GetMesItems(item);

        return UseTransaction(db =>
        {
            switch (item.Type)
            {
                case "0":
                    if (UpdateItemStatus(db, entity.Id, "A"))
                        return 1;
                    break;
                case "1":
                    if (UpdateItemStatus(db, entity.Id, "B"))
                        return 1;
                    break;
                case "3":
                    if (DeleteItem(db, entity.Id))
                        return 1;
                    break;
                case "2":
                case "4":
                case "5":
                    if (InsertOrUpdate(db, entity))
                        return 1;
                    break;
                default:
                    throw new ArgumentNullException(
                        $"type没有{item.Type}这个类型的参数");
            }

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

    public bool SaveList(List<ErpItems> items)
    {
        if (items == null || !items.Any())
        {
            Console.WriteLine("警告: 传入的物料列表为空");
            return false;
        }

        // 逐条处理，全部成功才返回true（事务内批量处理更优，此处保持原有逻辑）
        var result = items.Select(Save).ToList();
        return result.All(b => b);
    }

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

        if (result > 0)
            return true;

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

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

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

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

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

    private MesItems GetMesItems(ErpItems item)
    {
        var entity = new MesItems
        {
            Guid = Guid.NewGuid(),
            Type = item.Type,
            ItemNo = item.FNumber,
            ItemName = item.FName,
            ItemModel = item.FSpecification,
            ItemUnit = item.FBaseUnitId,
            DepotCode = item.FStockId,
            Fmaterialgroup = item.FMaterialGroup,
            Remarks = item.FDescription,
            Fissuetype = item.FIssueType,
            Fpurchaserid = item.FPurchaserId,
            Fpurchaseunitid = item.FPurchaseUnitId,
            Storeunit = item.FStoreUnitID,
            Saleunit = item.FSaleUnitId,
            Fforbidstatus = item.FForbidStatus,
            MaterialProperti = item.FErpClsID,
            ProductionWorkshop = item.FWorkShopId,
            ProduceUnit = item.FPRODUCEUNITID,
            SubconUnit = item.FSUBCONUNITID,
            FSubsidiary = string.IsNullOrEmpty(item.FUseOrgId) ? "1" : item.FUseOrgId,
            Fumbrella = string.IsNullOrEmpty(item.FCreateOrgId) ? "1" : item.FCreateOrgId,
            LossPercent = item.FLOSSPERCENT,
            MnemonicCode = item.FMnemonicCode,
            ExpPeriod = item.FExpPeriod,
            LastupdateDate = DateTime.Now,
            CreateDate = DateTime.Now,
            Company = "1000",
            Factory = "1000"
        };

        // 查找是否已存在相同物料编码的记录
        var existingItem = Db.Queryable<MesItems>()
            .Where(s => s.ItemNo == entity.ItemNo)
            .First();

        if (existingItem != null)
        {
            // 如果存在，使用现有的ID，后续将删除后重新插入
            entity.Id = existingItem.Id;
            entity.ItemId = existingItem.Id;
        }
        else
        {
            // 如果不存在，设为0，InsertOrUpdate方法将生成新ID
            entity.Id = 0;
            entity.ItemId = 0;
        }

        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<MesItems>().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<MesItems>().Where(x => x.Id == newId).Any())
        {
            newId++;
        }
        
        return newId;
    }

    private bool UpdateItemStatusBatch(SqlSugarScope db,
        List<MesItems> itemList, string status)
    {
        var ids = itemList.Select(it => it.Id).ToArray();
        var result = db.Updateable<MesItems>()
            .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 InsertItemBatch(SqlSugarScope db, List<MesItems> itemList)
    {
        var insertRange = db.Insertable(itemList).ExecuteCommand();
        if (insertRange > 0)
            return true;

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

    private bool DeleteItemBatch(SqlSugarScope db, List<MesItems> itemList)
    {
        var ids = itemList.Select(it => it.Id).ToArray();
        var deleteByIds = db.Deleteable<MesItems>()
            .Where(s => ids.Contains(s.Id)).ExecuteCommand();
        if (deleteByIds > 0)
            return true;

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

    private bool InsertOrUpdate(SqlSugarScope db, MesItems entity)
    {
        // 确保ItemId与Id保持一致
        entity.ItemId = entity.Id;
        
        if (entity.Id == 0)
        {
            // 新增情况：生成新ID并插入
            var newId = GenerateNewId();
            entity.Id = newId;
            entity.ItemId = newId;
            return db.Insertable(entity).IgnoreColumns(ignoreNullColumn:true).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<MesItems>().Where(s => s.Id == originalId).ExecuteCommand();
            
            // 重新插入，保持原有ID
            entity.Id = originalId;
            entity.ItemId = originalId;
            return db.Insertable(entity).IgnoreColumns(ignoreNullColumn:true).ExecuteCommand() > 0;
        }
    }

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