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

namespace MES.Service.service.BasicData;

public class MesStaffManager : Repository<MesStaff>
{
    // Save 方法用于保存单个员工记录，根据类型执行不同的操作
    public bool Save(ErpStaff unit)
    {
        var entity = GetMesStaff(unit); // 将 ErpStaff 转换为 MesStaff
        var sysUser = GetUser(unit); // 获取 SysUser 实例

        return UseTransaction(db =>
        {
            switch (unit.Type)
            {
                case "0":
                    if (UpdateStaffStatus(db, entity.Id, "A")) // 启用员工
                        return 1;
                    break;
                case "1":
                    if (UpdateStaffStatus(db, entity.Id, "B")) // 禁用员工
                        return 1;
                    break;
                case "2":
                case "4":
                    if (InsertOrUpdateStaff(db, sysUser, entity)) // 插入或更新员工
                        return 1;
                    break;
                case "3":
                    if (DeleteStaff(db, sysUser, entity.Id)) // 删除员工
                        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;
    }

    // 更新员工状态的方法
    private bool UpdateStaffStatus(SqlSugarScope db, decimal staffId,
        string status)
    {
        var result = db.Updateable<MesStaff>()
            .SetColumns(s => s.FforbidStatus == status)
            .Where(s => s.Id == staffId).ExecuteCommand();

        if (result > 0)
            return true;

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

    /// <summary>
    /// 同步物料信息new_0/4
    /// </summary>
    /// <param name="db"></param>
    /// <param name="entity"></param>
    /// <returns></returns>
    private bool InsertOrUpdateStaff(SqlSugarScope db, SysUser sysUser, MesStaff entity)
    {
        // 先确保用户账号存在
        var exists = db.Queryable<SysUser>().Any(u => u.Account == sysUser.Account);
        if (!exists)
        {
            var insertUser = db.Insertable(sysUser).ExecuteCommand();
            if (insertUser <= 0) return false;
        }

        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<MesStaff>().Where(s => s.Id == originalId).ExecuteCommand();

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

    // 插入或更新员工的方法
    //private bool InsertOrUpdateStaff(SqlSugarScope db, SysUser sysUser,MesStaff entity)
    //{

    //    var exists = db.Queryable<SysUser>().Any(u => u.Account == sysUser.Account);
    //    if (!exists)
    //    {
    //        var insertUser = db.Insertable(sysUser).ExecuteCommand();
    //        if (insertUser <= 0) return false;
    //    }

    //    //db.Deleteable<SysUser>()
    //    //    .Where(s => s.Account == sysUser.Account).ExecuteCommand();

    //    db.Deleteable<MesStaff>()
    //        .Where(s => s.Id == entity.Id).ExecuteCommand();



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

    // 删除员工的方法
    private bool DeleteStaff(SqlSugarScope db, SysUser sysUser, decimal staffId)
    {
        var deleteUser = db.Deleteable<SysUser>()
            .Where(s => s.Account == sysUser.Account).ExecuteCommand();
        if (deleteUser <= 0) throw new NotImplementedException("反审核失败");
        var deleteStaff =
            db.Deleteable<MesStaff>()
                .Where(s => s.Id == staffId).ExecuteCommand();
        if (deleteStaff > 0)
            return true;

        throw new NotImplementedException("反审核失败");
    }

    /// <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<MesStaff>().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<MesStaff>().Where(x => x.Id == newId).Any())
        {
            newId++;
        }

        return newId;
    }

    // 将 ErpStaff 对象转换为 MesStaff 对象的方法
    private MesStaff GetMesStaff(ErpStaff staff)
    {
        // 查找是否已存在相同编码的记录。
        var existingCustomer = Db.Queryable<MesStaff>()
            .Where(s => s.StaffNo == staff.FStaffNumber)
            .First();

        var entity = new MesStaff
        {
            // 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(staff.Id),
            StaffNo = staff.FStaffNumber,
            StaffName = staff.FName,
            DepartmentNo = staff.FPostDeptNo,//部门编码
            DepartmentName = staff.FPostDept,//部门名称
            PositionCode = staff.FPost,//岗位编码
            PositionName = staff.FPostId,//岗位名称
            PhoneNumber = staff.FMobile,
            Remark = staff.FDescription,
            FforbidStatus = staff.FForbidStatus,
            FSubsidiary = staff.FUseOrgId,
            Fumbrella = staff.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,
            Type = staff.Type
        };

        if (staff.FStaffStartDate != null)
            entity.StartDate = DateTime.ParseExact(staff.FStaffStartDate,
                "yyyy-MM-dd HH:mm:ss", null);

        // ERP: 0=未禁用, 1=禁用
        // MES: A=未禁用, B=禁用
        if (string.IsNullOrEmpty(staff.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 = staff.FForbidStatus == "1" ? "B" : "A";
        }

        return entity;
    }

    // 将 ErpStaff 对象转换为 SysUser 对象的方法
    private SysUser GetUser(ErpStaff staff)
    {
        return new SysUser
        {
            IsStatus = true,
            Account = staff.FStaffNumber,
            UserName = staff.FName,
            Password = "248436591099D5B8925DE067E9B898CE", // 初始密码
            DepartNo = staff.FPostDept,
            Type = staff.Type,
            CreateTime = DateTime.Now
        };
    }

    // SaveList 方法用于保存多个员工记录，根据类型批量执行不同的操作
    public bool SaveList(List<ErpStaff> departments)
    {
        var list = new List<MesStaff>();
        var userList = new List<SysUser>();

        departments.ForEach(s =>
        {
            var entity = GetMesStaff(s);
            entity.Type = s.Type;
            list.Add(entity);

            var sysUser = GetUser(s);
            sysUser.Type = s.Type;
            userList.Add(sysUser);
        });

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

            return 1;
        }) > 0;
    }

    // 批量更新员工状态的方法
    private bool UpdateStaffStatusBatch(SqlSugarScope db,
        List<MesStaff> staffList, string status)
    {
        var ids = staffList.Select(it => it.Id).ToArray();
        var result = db.Updateable<MesStaff>()
            .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");
    }

    // 批量插入员工的方法
    private bool InsertStaffBatch(SqlSugarScope db, List<SysUser> userList,
        List<MesStaff> staffList)
    {
        var userInsert = userList.FindAll(s => s.Type == "2");
        var executeCommand = db.Insertable(userInsert).ExecuteCommand();
        if (executeCommand <= 0) throw new ArgumentNullException("审核失败");
        if (db.Insertable(staffList).ExecuteCommand() > 0)
            return true;

        throw new ArgumentNullException("审核失败");
    }

    // 批量删除员工的方法
    private bool DeleteStaffBatch(SqlSugarScope db, List<SysUser> userList,
        List<MesStaff> staffList)
    {
        var sid = userList.FindAll(s => s.Type == "3").Select(s => s.Account)
            .ToArray();
        var result = db.Deleteable<SysUser>()
            .Where(s => sid.Contains(s.Account)).ExecuteCommand();

        if (result <= 0) throw new ArgumentNullException("反审核失败");
        var ids = staffList.Select(it => it.Id).ToArray();
        if (db.Deleteable<MesStaff>()
                .Where(s => ids.Contains(s.Id)).ExecuteCommand() > 0)
            return true;

        throw new ArgumentNullException("反审核失败");
    }

    // 批量插入或更新员工的方法
    private bool InsertOrUpdateBatch(SqlSugarScope db, List<SysUser> userList,
        List<MesStaff> staffList)
    {
        return !(from sysUser in userList
            let entity = staffList.First(s => s.StaffNo == sysUser.Account)
            where !InsertOrUpdateStaff(db, sysUser, entity)
            select sysUser).Any();
    }
}