namespace MES.Service.service.BasicData;

using MES.Service.DB;
using MES.Service.Dto.webApi;
using MES.Service.Modes;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;

public class MesStaffManager : Repository<MesStaff>
{
    // 保存单个员工记录
    public bool Save(ErpStaff unit)
    {
        if (unit == null) throw new ArgumentNullException(nameof(unit));

        var entity = GetMesStaff(unit);
        //var mesStaffPositionLink = GetMesStaffPositionLink(unit);
        List<MesStaffPositionLink> mesStaffPositionLink = null;

        return UseTransaction(db =>
        {
            switch (unit.Type)
            {
                case "0": return UpdateStaffStatus(db, entity.Id, "A") ? 1 : 0;
                case "1": return UpdateStaffStatus(db, entity.Id, "B") ? 1 : 0;
                case "2":
                case "4":
                    // return InsertOrUpdateStaff(db,
                    //     new List<SysUser> { sysUser },
                    //     new List<MesStaff> { entity }, mesStaffPositionLink)
                    //     ? 1
                    //     : 0;
                    return InsertUser(db, entity) ? 1 : 0;
                case "3":
                    // return DeleteStaff(db, new List<SysUser> { sysUser },
                    //     new List<MesStaff> { entity })
                    //     ? 1
                    //     : 0;
                    return DeleteStaff(db, entity) ? 1 : 0;
                default: throw new ArgumentException($"不支持的类型: {unit.Type}");
            }
        }) > 0;
    }

    /// <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;
    }

    private bool InsertUser(SqlSugarScope db, MesStaff entity)
    {
        if (entity.Id == 0)
        {
            // 新增情况：生成新ID并插入
            var newId = GenerateNewId();
            entity.Id = newId;
            
            var sysUser = GetUser(entity);
            var staffInsertId = db.Insertable(entity).ExecuteReturnIdentity();
            
            if (staffInsertId > 0)
            {
                sysUser.StaffId = staffInsertId.ToString();
                return db.Insertable(sysUser).ExecuteCommand() > 0;
            }
            return false;
        }
        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();
            db.Deleteable<SysUser>().Where(s => s.StaffId == originalId.ToString()).ExecuteCommand();
            
            // 重新插入，保持原有ID
            entity.Id = originalId;
            var sysUser = GetUser(entity);
            
            var staffInsert = db.Insertable(entity).ExecuteCommand();
            if (staffInsert > 0)
            {
                return db.Insertable(sysUser).ExecuteCommand() > 0;
            }
            return false;
        }
    }

    private bool DeleteStaff(SqlSugarScope db, MesStaff entity)
    {
        var executeCommand = db.Deleteable<MesStaff>()
            .Where(s => s.Id == entity.Id)
            .ExecuteCommand();

        db.Deleteable<SysUser>()
            .Where(s => s.StaffId == entity.Id.ToString())
            .ExecuteCommand();

        return executeCommand > 0;
    }

    // 保存多个员工记录
    public bool SaveList(List<ErpStaff> departments)
    {
        if (departments == null || !departments.Any())
        {
            Console.WriteLine("警告: 传入的员工列表为空");
            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);
    }

    // 插入或更新员工（批量版本）
    private bool InsertOrUpdateBatch(SqlSugarScope db, List<SysUser> sysUsers,
        List<MesStaff> entities, List<MesStaffPositionLink> positionLinks)
    {
        if (!sysUsers.Any() || !entities.Any())
        {
            Console.WriteLine("警告: SysUser或MesStaff列表为空，跳过插入操作");
            return false;
        }

        try
        {
            // 1. 批量插入 SysUser（仅新增）
            var newSysUsers = sysUsers
                .Where(u =>
                    !db.Queryable<SysUser>().Any(e => e.StaffId == u.StaffId))
                .ToList();

            if (newSysUsers.Any())
            {
                Console.WriteLine($"准备插入 {newSysUsers.Count} 个新SysUser");
                var insertCount = db.Insertable(newSysUsers).ExecuteCommand();

                if (insertCount != newSysUsers.Count)
                {
                    throw new InvalidOperationException(
                        $"SysUser插入失败，期望插入 {newSysUsers.Count} 条，实际插入 {insertCount} 条");
                }

                Console.WriteLine($"成功插入 {insertCount} 个SysUser");
            }

            // 2. 批量删除并插入 MesStaff
            var staffIds = entities.Select(e => e.Id).ToList();
            db.Deleteable<MesStaff>().Where(s => staffIds.Contains(s.Id))
                .ExecuteCommand();

            var staffInsertCount = db.Insertable(entities).IgnoreColumns(true)
                .ExecuteCommand();
            if (staffInsertCount != entities.Count)
            {
                throw new InvalidOperationException(
                    $"MesStaff插入失败，期望插入 {entities.Count} 条，实际插入 {staffInsertCount} 条");
            }

            // 3. 处理岗位关联（如果有）
            if (positionLinks != null && positionLinks.Any())
            {
                var positionStaffIds = positionLinks.Select(p => p.StaffId)
                    .Distinct().ToList();
                db.Deleteable<MesStaffPositionLink>()
                    .Where(p => positionStaffIds.Contains(p.StaffId))
                    .ExecuteCommand();

                var positionInsertCount = db.Insertable(positionLinks)
                    .PageSize(500).IgnoreColumnsNull().ExecuteCommand();
                if (positionInsertCount != positionLinks.Count)
                {
                    throw new InvalidOperationException(
                        $"MesStaffPositionLink插入失败，期望插入 {positionLinks.Count} 条，实际插入 {positionInsertCount} 条");
                }
            }

            return true;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"批量插入/更新失败: {ex.Message}");
            Console.WriteLine($"SQL: {db.Ado.SqlExecutionTime}");

            // 记录完整的错误堆栈
            Console.WriteLine($"堆栈跟踪: {ex.StackTrace}");

            // 记录失败的数据
            if (sysUsers != null && sysUsers.Any())
            {
                Console.WriteLine(
                    $"失败的SysUser数据: {string.Join(", ", sysUsers.Select(u => u.Account))}");
            }

            throw;
        }
    }

    // 插入或更新员工（兼容旧版本，调用批量方法）
    private bool InsertOrUpdateStaff(SqlSugarScope db, List<SysUser> sysUsers,
        List<MesStaff> entities, List<MesStaffPositionLink> positionLinks)
    {
        return InsertOrUpdateBatch(db, sysUsers, entities, positionLinks);
    }

    // 批量更新员工状态
    private bool UpdateStaffStatusBatch(SqlSugarScope db,
        List<MesStaff> staffList, string status)
    {
        if (!staffList.Any())
        {
            Console.WriteLine("警告: 员工列表为空，跳过状态更新");
            return false;
        }

        var ids = staffList.Select(s => s.Id).ToList();
        var updateCount = db.Updateable<MesStaff>()
            .SetColumns(s => s.FforbidStatus == status)
            .Where(s => ids.Contains(s.Id))
            .ExecuteCommand();

        if (updateCount <= 0)
        {
            throw new InvalidOperationException(
                $"更新员工状态失败，状态: {status}，影响行数: {updateCount}");
        }

        Console.WriteLine($"成功更新 {updateCount} 个员工状态为 {status}");
        return true;
    }

    // 批量删除员工
    private bool DeleteStaffBatch(SqlSugarScope db, List<SysUser> sysUsers,
        List<MesStaff> entities)
    {
        if (!sysUsers.Any() || !entities.Any())
        {
            Console.WriteLine("警告: SysUser或MesStaff列表为空，跳过删除操作");
            return false;
        }

        try
        {
            // 1. 删除 SysUser
            var userAccounts = sysUsers.Select(u => u.Account).ToList();
            var userDeleteCount = db.Deleteable<SysUser>()
                .Where(u => userAccounts.Contains(u.Account)).ExecuteCommand();

            // 2. 删除 MesStaff
            var staffIds = entities.Select(e => e.Id).ToList();
            var staffDeleteCount = db.Deleteable<MesStaff>()
                .Where(s => staffIds.Contains(s.Id)).ExecuteCommand();

            // 3. 删除岗位关联 ：使用Any方法（推荐）
            db.Deleteable<MesStaffPositionLink>()
                .Where(p => staffIds.Any(id => id == p.StaffId))
                .ExecuteCommand();

            Console.WriteLine(
                $"成功删除 {userDeleteCount} 个SysUser和 {staffDeleteCount} 个MesStaff");
            return userDeleteCount > 0 && staffDeleteCount > 0;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"批量删除失败: {ex.Message}");
            Console.WriteLine($"SQL: {db.Ado.SqlExecutionTime}");
            throw;
        }
    }

    // 更新员工状态
    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)
        {
            throw new InvalidOperationException(
                $"更新员工状态失败，员工ID: {staffId}，状态: {status}");
        }

        return true;
    }

    // 删除员工（调用批量方法）
    private bool DeleteStaff(SqlSugarScope db, List<SysUser> sysUsers,
        List<MesStaff> entities)
    {
        return DeleteStaffBatch(db, sysUsers, entities);
    }

    // 将 ErpStaff 对象转换为 MesStaff 对象
    private MesStaff GetMesStaff(ErpStaff staff)
    {
        if (staff == null) throw new ArgumentNullException(nameof(staff));

        try
        {
            var entity = new MesStaff
            {
                Guid = Guid.NewGuid(),
                StaffNo = staff.FStaffNumber,
                StaffName = staff.FName,
                DepartmentName = staff.FPostDept,
                PositionCode = staff.FPostId,
                PhoneNumber = staff.FMobile,
                Remark = staff.FDescription,
                FforbidStatus = staff.FForbidStatus,
                FSubsidiary = string.IsNullOrEmpty(staff.FUseOrgId)
                    ? "1"
                    : staff.FUseOrgId,
                Fumbrella = string.IsNullOrEmpty(staff.FCreateOrgId)
                    ? "1"
                    : staff.FCreateOrgId,
                CreateDate = DateTime.Now,
                LastupdateDate = DateTime.Now,
                Type = staff.Type
            };

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

            // 查找是否已存在相同员工编码的记录
            var existingStaff = Db.Queryable<MesStaff>()
                .Where(s => s.StaffNo == entity.StaffNo)
                .First();

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

            return entity;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"转换ErpStaff到MesStaff失败: {ex.Message}");
            Console.WriteLine(
                $"输入数据: {staff.Id}, {staff.FStaffNumber}, {staff.FName}");
            throw;
        }
    }

    // 将 ErpStaff 对象转换为 SysUser 对象
    private SysUser GetUser(MesStaff entity)
    {
        if (entity == null) throw new ArgumentNullException(nameof(entity));

        try
        {
            return new SysUser
            {
                StaffId = entity.Id.ToString(), // 确保Sid与员工ID一致
                IsStatus = true,
                Account = entity.StaffNo,
                UserName = entity.StaffName,
                Password = "E1ADC3949BA59ABBE56E057F2F883E", // 初始密码
                DepartNo = entity.DepartmentName,
                CreateTime = DateTime.Now
            };
        }
        catch (Exception ex)
        {
            throw new NotImplementedException(ex.Message);
        }
    }

    // 获取员工岗位关联列表
    private List<MesStaffPositionLink> GetMesStaffPositionLink(ErpStaff staff)
    {
        if (staff == null) return new List<MesStaffPositionLink>();

        try
        {
            var staffDetails = new List<MesStaffPositionLink>();

            if (staff.ErpStaffDetails != null &&
                staff.ErpStaffDetails.Count > 0)
            {
                staffDetails = staff.ErpStaffDetails.Select(staffDetail =>
                    new MesStaffPositionLink
                    {
                        StaffId = Convert.ToDecimal(staff.Id),
                        PositionId =
                            string.IsNullOrEmpty(
                                staffDetail.fPostId?.ToString())
                                ? null
                                : Convert.ToDecimal(staffDetail.fPostId),
                        FPostDeptId =
                            string.IsNullOrEmpty(staffDetail.fPostDeptid
                                ?.ToString())
                                ? null
                                : Convert.ToDecimal(staffDetail.fPostDeptid),
                        FStaffStartDate =
                            string.IsNullOrEmpty(staffDetail.fStaffStartDate
                                ?.ToString())
                                ? null
                                : DateTime.ParseExact(
                                    staffDetail.fStaffStartDate,
                                    "yyyy-MM-dd HH:mm:ss", null)
                    }).ToList();
            }

            return staffDetails;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"转换岗位关联数据失败: {ex.Message}");
            Console.WriteLine($"员工ID: {staff.Id}");
            throw;
        }
    }
}