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

namespace MES.Service.service.BasicData;

public class SysDepartmentManager : Repository<SysDepartment>
{
    // 当前类已经继承了 Repository 增、删、查、改的方法

    // Save 方法用于保存单个部门记录，根据类型执行不同的操作
    public bool Save(ErpDepartment department)
    {
        var entity =
            GetSysDepartment(department); // 将 ErpDepartment 转换为 SysDepartment

        return UseTransaction(db =>
        {
            switch (department.Type)
            {
                case "0":
                    if (UpdateDepartmentStatus(db, entity.Id, "A")) // 启用部门
                        return 1;
                    break;
                case "1":
                    if (UpdateDepartmentStatus(db, entity.Id, "B")) // 禁用部门
                        return 1;
                    break;
                case "3":
                    if (DeleteDepartment(db, entity.Id)) // 删除部门
                        return 1;
                    break;
                case "2":
                case "4":
                    if (InsertOrUpdateDepartment(db, entity)) // 插入或更新部门
                        return 1;
                    break;
                default:
                    throw new ArgumentNullException(
                        $"type没有{department.Type}这个类型的参数");
            }

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

    // 更新部门状态的方法
    private bool UpdateDepartmentStatus(SqlSugarScope db, decimal departmentId,
        string status)
    {
        var result = db.Updateable<SysDepartment>()
            .SetColumns(s => s.Depextr4 == status)
            .Where(s => s.Id == departmentId).ExecuteCommand();

        if (result > 0)
            return true;

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

    // 插入新部门的方法
    private bool InsertDepartment(SqlSugarScope db, SysDepartment entity)
    {
        var insert = db.Insertable(entity).ExecuteCommand();
        if (insert > 0)
            return true;

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

    // 删除部门的方法
    private bool DeleteDepartment(SqlSugarScope db, decimal departmentId)
    {
        var deleteById = db.Deleteable<SysDepartment>()
            .Where(s => s.Id == departmentId).ExecuteCommand();
        if (deleteById > 0)
            return true;

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

    /// <summary>
    /// 同步物料信息new_0/4
    /// </summary>
    /// <param name="db"></param>
    /// <param name="entity"></param>
    /// <returns></returns>
    private bool InsertOrUpdateDepartment(SqlSugarScope db, SysDepartment entity)
    {
        if (entity.Id == 0)
        {
            // 新增情况：生成新ID并插入
            var newId = GenerateNewId();
            entity.Id = newId;
            entity.Departmentid = 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<SysDepartment>().Where(s => s.Id == originalId).ExecuteCommand();

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

    // 插入或更新部门的方法
    //private bool InsertOrUpdateDepartment(SqlSugarScope db,SysDepartment entity)
    //{
    //    db.Deleteable<SysDepartment>()
    //        .Where(s => s.Id == entity.Id).ExecuteCommand();

    //    var insert = db.Insertable(entity).ExecuteCommand();
    //    return insert > 0;
    //}

    // 将 ErpDepartment 对象转换为 SysDepartment 对象的方法
    private SysDepartment GetSysDepartment(ErpDepartment department)
    {
        // 查找是否已存在相同编码的记录。
        var existingCustomer = Db.Queryable<SysDepartment>()
            .Where(s => s.Departmentcode == department.FNumber)
            .First();

        var entity = new SysDepartment
        {
            // 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,
            Departmentid = existingCustomer?.Departmentid ?? 0,
            //Id = Convert.ToDecimal(department.Id),
            //Departmentid = Convert.ToDecimal(department.Id),
            Departmentcode = department.FNumber,//主键
            Departmentname = department.FName,
            Depextr1 = department.FDeptProperty,
            Depextr2 = department.FGroup,
            Depextr3 = department.FWIPStockID,
            Depextr4 = department.FForbidStatus,
            FParentID = department.FParentID,
            FSubsidiary = department.FUseOrgId,
            Fumbrella = department.FCreateOrgId,
            // 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,
            //CreateDate = DateTime.Now,
            LastupdateDate = DateTime.Now,
            Company = "1000",
            Factory = "1000",

            Remark4 = department.remark4,
            Remark5 = department.remark5,

            WorkshopCenterCode = department.FNumber_WORKSHOP,
            WorkshopCenterName = department.FName_WORKSHOP,
            FactoryName = department.factory_name
        };

        // ERP: 0=未禁用, 1=禁用
        // MES: A=未禁用, B=禁用
        if (string.IsNullOrEmpty(department.FForbidStatus))
        {
            entity.Depextr4 = "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.Depextr4 = department.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<SysDepartment>().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<SysDepartment>().Where(x => x.Id == newId).Any())
        {
            newId++;
        }

        return newId;
    }

    // SaveList 方法用于保存多个部门记录，根据类型批量执行不同的操作
    public bool SaveList(List<ErpDepartment> departments)
    {
        var list = new List<SysDepartment>();
        departments.ForEach(s =>
        {
            var entity =
                GetSysDepartment(s); // 将 ErpDepartment 转换为 SysDepartment
            entity.Type = s.Type;
            list.Add(entity);
        });

        var groupBy = list.GroupBy(s => s.Type)
            .ToDictionary(g => g.Key, g => g.ToList());
        return UseTransaction(db =>
        {
            foreach (var departmentGroup in groupBy)
                switch (departmentGroup.Key)
                {
                    case "0":
                        if (!UpdateDepartmentStatusBatch(db,
                                departmentGroup.Value, "A")) // 批量启用部门
                            throw new NotImplementedException("启用失败");
                        break;
                    case "1":
                        if (!UpdateDepartmentStatusBatch(db,
                                departmentGroup.Value, "B")) // 批量禁用部门
                            throw new NotImplementedException("禁用失败");
                        break;
                    case "3":
                        if (!DeleteDepartmentBatch(db,
                                departmentGroup.Value)) // 批量删除部门
                            throw new NotImplementedException("删除失败");
                        break;
                    case "2":
                    case "4":
                        if (!InsertOrUpdateDepartmentBatch(db,
                                departmentGroup.Value)) // 批量插入或更新部门
                            throw new NotImplementedException("同步失败");
                        break;
                    default:
                        throw new ArgumentNullException(
                            $"type没有{departmentGroup.Key}这个类型的参数");
                }

            return 1;
        }) > 0;
    }

    // 批量更新部门状态的方法
    private bool UpdateDepartmentStatusBatch(SqlSugarScope db,
        List<SysDepartment> departmentList, string status)
    {
        var ids = departmentList.Select(it => it.Id).ToArray();
        var result = db.Updateable<SysDepartment>()
            .SetColumns(s => s.Depextr4 == 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");
    }

    // 批量插入部门的方法
    private bool InsertDepartmentBatch(SqlSugarScope db,
        List<SysDepartment> departmentList)
    {
        var insertRange = db.Insertable(departmentList).ExecuteCommand();
        if (insertRange > 0)
            return true;

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

    // 批量删除部门的方法
    private bool DeleteDepartmentBatch(SqlSugarScope db,
        List<SysDepartment> departmentList)
    {
        var ids = departmentList.Select(it => it.Id).ToArray();
        var deleteByIds =
            db.Deleteable<SysDepartment>()
                .Where(s => ids.Contains(s.Id)).ExecuteCommand();

        if (deleteByIds > 0)
            return true;

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

    // 批量插入或更新部门的方法
    private bool InsertOrUpdateDepartmentBatch(SqlSugarScope db,
        List<SysDepartment> departmentList)
    {
        return departmentList.All(
            entity => InsertOrUpdateDepartment(db, entity));
    }
}