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>
    /// 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;
    }

    // 插入或更新部门的方法
    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;
            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<SysDepartment>().Where(s => s.Id == originalId).ExecuteCommand();
            
            // 重新插入，保持原有ID
            entity.Id = originalId;
            return db.Insertable(entity).IgnoreColumns(ignoreNullColumn:true).ExecuteCommand() > 0;
        }
    }

    // 将 ErpDepartment 对象转换为 SysDepartment 对象的方法
    private SysDepartment GetSysDepartment(ErpDepartment department)
    {
        var fForbidStatus = department.FForbidStatus;
        if (department.FForbidStatus == "0")
        {
            fForbidStatus = "A";
        }
        else if (department.FForbidStatus == "1")
        {
            fForbidStatus = "B";
        }

        var entity = new SysDepartment
        {
            Departmentcode = department.FNumber,
            Departmentname = department.FName,
            Depextr1 = department.FDeptProperty,
            Depextr2 = department.FGroup,
            Depextr3 = department.FWIPStockID,
            Depextr4 = fForbidStatus,
            FParentID = department.FParentID,
            FSubsidiary = string.IsNullOrEmpty(department.FUseOrgId)
                ? "1"
                : department.FUseOrgId,
            Fumbrella = string.IsNullOrEmpty(department.FCreateOrgId)
                ? "1"
                : department.FCreateOrgId,
            CreateDate = DateTime.Now,
            LastupdateDate = DateTime.Now,
            Company = "1000",
            Factory = "1000"
        };

        // 查找是否已存在相同部门编码的记录
        var existingDepartment = Db.Queryable<SysDepartment>()
            .Where(s => s.Departmentcode == entity.Departmentcode)
            .First();

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

        return entity;
    }

    // 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)
    {
        if (departments == null || !departments.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 = departments.Select(Save).ToList();
        return result.All(b => b);
    }

    // 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));
    }
}