package opsdev

import (
	"context"

	"dashoo.cn/opms_libary/myerrors"
	opsdevdao "dashoo.cn/opms_parent/app/dao/opsdev"
	opsdevmodel "dashoo.cn/opms_parent/app/model/opsdev"
	"dashoo.cn/opms_parent/app/service"
	"github.com/gogf/gf/database/gdb"
	"github.com/gogf/gf/frame/g"
	"github.com/gogf/gf/os/gtime"
	"github.com/gogf/gf/util/gconv"
)

// PlatMeetingService 会议业务逻辑实现类
type PlatMeetingService struct {
	*service.ContextService
	MeetingDao      *opsdevdao.PlatMeetingDao
	AttendeeDao     *opsdevdao.PlatMeetingAttendeeDao
	WorkHourDao     *opsdevdao.PlatMeetingWorkHourDao
}

// NewPlatMeetingService 初始化service
func NewPlatMeetingService(ctx context.Context) (svc *PlatMeetingService, err error) {
	svc = new(PlatMeetingService)
	if svc.ContextService, err = svc.Init(ctx); err != nil {
		return nil, err
	}
	svc.MeetingDao = opsdevdao.NewPlatMeetingDao(svc.Tenant)
	svc.AttendeeDao = opsdevdao.NewPlatMeetingAttendeeDao(svc.Tenant)
	svc.WorkHourDao = opsdevdao.NewPlatMeetingWorkHourDao(svc.Tenant)
	return svc, nil
}

// GetList 分页查询会议列表
func (s *PlatMeetingService) GetList(req *opsdevmodel.PlatMeetingSearchReq) (total int, list []*opsdevmodel.PlatMeetingRsp, err error) {
	db := s.MeetingDao.FieldsEx(s.MeetingDao.Columns.DeletedTime)

	if req.MeetingTitle != "" {
		db = db.Where(s.MeetingDao.Columns.MeetingTitle+" like ?", "%"+req.MeetingTitle+"%")
	}
	if req.OrganizerName != "" {
		db = db.Where(s.MeetingDao.Columns.OrganizerName+" like ?", "%"+req.OrganizerName+"%")
	}
	if req.DeptId > 0 {
		db = db.Where(s.MeetingDao.Columns.DeptId, req.DeptId)
	}
	if req.MeetingDateStart != "" {
		db = db.Where(s.MeetingDao.Columns.MeetingDate+" >= ?", req.MeetingDateStart)
	}
	if req.MeetingDateEnd != "" {
		db = db.Where(s.MeetingDao.Columns.MeetingDate+" <= ?", req.MeetingDateEnd)
	}

	total, err = db.Count()
	if err != nil {
		return 0, nil, myerrors.DbError("获取会议总数失败")
	}

	pageNum, pageSize := req.GetPage()
	db = db.Order(s.MeetingDao.Columns.CreatedTime + " desc")

	var entities []*opsdevmodel.PlatMeeting
	err = db.Page(pageNum, pageSize).Scan(&entities)
	if err != nil {
		return 0, nil, myerrors.DbError("查询会议列表失败")
	}

	if err = gconv.Structs(entities, &list); err != nil {
		return 0, nil, myerrors.DbError("数据转换失败")
	}

	// 查询每个会议的参会人员
	for _, item := range list {
		attendees, _ := s.getAttendeesByMeetingId(int(item.Id))
		item.Attendees = attendees
	}

	return
}

// GetById 根据ID获取会议详情
func (s *PlatMeetingService) GetById(id int) (*opsdevmodel.PlatMeetingRsp, error) {
	var entity opsdevmodel.PlatMeeting
	err := s.MeetingDao.FieldsEx(s.MeetingDao.Columns.DeletedTime).
		WherePri(s.MeetingDao.Columns.Id, id).Scan(&entity)
	if err != nil {
		return nil, myerrors.DbError("查询会议失败")
	}
	if entity.Id <= 0 {
		return nil, myerrors.TipsError("会议不存在")
	}

	var rsp opsdevmodel.PlatMeetingRsp
	if err := gconv.Struct(entity, &rsp); err != nil {
		return nil, myerrors.DbError("数据转换失败")
	}

	attendees, err := s.getAttendeesByMeetingId(id)
	if err != nil {
		return nil, err
	}
	rsp.Attendees = attendees

	return &rsp, nil
}

// Create 新增会议（含参会人员 + 工时生成）
func (s *PlatMeetingService) Create(req *opsdevmodel.PlatMeetingAddReq) error {
	data := g.Map{
		s.MeetingDao.Columns.MeetingTitle:   req.MeetingTitle,
		s.MeetingDao.Columns.MeetingContent: req.MeetingContent,
		s.MeetingDao.Columns.OrganizerId:    req.OrganizerId,
		s.MeetingDao.Columns.OrganizerName:  req.OrganizerName,
		s.MeetingDao.Columns.DeptId:         req.DeptId,
		s.MeetingDao.Columns.Duration:       req.Duration,
		s.MeetingDao.Columns.Remark:         req.Remark,
	}
	if req.MeetingDate != "" {
		data[s.MeetingDao.Columns.MeetingDate] = req.MeetingDate
	}

	service.SetCreatedInfo(data, s.GetCxtUserId(), s.GetCxtUserName())

	return s.MeetingDao.Transaction(context.TODO(), func(ctx context.Context, tx *gdb.TX) error {
		result, err := s.MeetingDao.TX(tx).Data(data).Insert()
		if err != nil {
			return myerrors.DbError("新增会议失败")
		}
		meetingId, err := result.LastInsertId()
		if err != nil {
			return myerrors.DbError("获取会议ID失败")
		}

		if err := s.batchInsertAttendees(tx, int(meetingId), req.UserIds, req.UserNames); err != nil {
			return err
		}

		// 生成发起人工时
		workDate := gtime.Now()
		if req.MeetingDate != "" {
			workDate = gtime.NewFromStr(req.MeetingDate)
		}
		orgWhData := g.Map{
			s.WorkHourDao.Columns.MeetingId:  int(meetingId),
			s.WorkHourDao.Columns.AttendeeId: 0,
			s.WorkHourDao.Columns.UserId:     req.OrganizerId,
			s.WorkHourDao.Columns.UserName:   req.OrganizerName,
			s.WorkHourDao.Columns.WorkDate:   workDate,
			s.WorkHourDao.Columns.WorkHour:   req.Duration,
			s.WorkHourDao.Columns.Remark:     req.MeetingTitle,
		}
		service.SetCreatedInfo(orgWhData, s.GetCxtUserId(), s.GetCxtUserName())
		if _, err := s.WorkHourDao.TX(tx).Data(orgWhData).Insert(); err != nil {
			return myerrors.DbError("生成发起人工时失败")
		}

		// 生成参会人员工时
		attendees, err := s.AttendeeDao.TX(tx).FieldsEx(s.AttendeeDao.Columns.DeletedTime).
			Where(s.AttendeeDao.Columns.MeetingId, int(meetingId)).All()
		if err != nil {
			return myerrors.DbError("查询参会人员失败")
		}
		for _, row := range attendees {
			whData := g.Map{
				s.WorkHourDao.Columns.MeetingId:  int(meetingId),
				s.WorkHourDao.Columns.AttendeeId: row.Id,
				s.WorkHourDao.Columns.UserId:     row.UserId,
				s.WorkHourDao.Columns.UserName:   row.UserName,
				s.WorkHourDao.Columns.WorkDate:   workDate,
				s.WorkHourDao.Columns.WorkHour:   req.Duration,
				s.WorkHourDao.Columns.Remark:     req.MeetingTitle,
			}
			service.SetCreatedInfo(whData, s.GetCxtUserId(), s.GetCxtUserName())
			if _, err := s.WorkHourDao.TX(tx).Data(whData).Insert(); err != nil {
				return myerrors.DbError("生成参会人工时失败")
			}
		}

		// 标记参会人工时已生成
		if _, err := s.AttendeeDao.TX(tx).
			Data(g.Map{s.AttendeeDao.Columns.WorkHourGenerated: 1}).
			Where(s.AttendeeDao.Columns.MeetingId, int(meetingId)).Update(); err != nil {
			return myerrors.DbError("更新参会人标记失败")
		}

		return nil
	})
}

// UpdateById 更新会议
func (s *PlatMeetingService) UpdateById(req *opsdevmodel.PlatMeetingUpdateReq) error {
	var entity opsdevmodel.PlatMeeting
	err := s.MeetingDao.FieldsEx(s.MeetingDao.Columns.DeletedTime).
		WherePri(s.MeetingDao.Columns.Id, req.Id).Scan(&entity)
	if err != nil {
		return myerrors.DbError("查询会议失败")
	}
	if entity.Id <= 0 {
		return myerrors.TipsError("会议不存在")
	}

	data := g.Map{}
	if req.MeetingTitle != "" {
		data[s.MeetingDao.Columns.MeetingTitle] = req.MeetingTitle
	}
	if req.MeetingContent != "" {
		data[s.MeetingDao.Columns.MeetingContent] = req.MeetingContent
	}
	if req.MeetingDate != "" {
		data[s.MeetingDao.Columns.MeetingDate] = req.MeetingDate
	}
	if req.Duration > 0 {
		data[s.MeetingDao.Columns.Duration] = req.Duration
	}
	if req.OrganizerId > 0 {
		data[s.MeetingDao.Columns.OrganizerId] = req.OrganizerId
	}
	if req.OrganizerName != "" {
		data[s.MeetingDao.Columns.OrganizerName] = req.OrganizerName
	}
	if req.DeptId > 0 {
		data[s.MeetingDao.Columns.DeptId] = req.DeptId
	}
	if req.Remark != "" {
		data[s.MeetingDao.Columns.Remark] = req.Remark
	}

	if len(data) == 0 && len(req.UserIds) == 0 {
		return nil
	}

	service.SetUpdatedInfo(data, s.GetCxtUserId(), s.GetCxtUserName())

	return s.MeetingDao.Transaction(context.TODO(), func(ctx context.Context, tx *gdb.TX) error {
		if len(data) > 0 {
			_, err = s.MeetingDao.TX(tx).FieldsEx(service.UpdateFieldEx...).
				Data(data).WherePri(s.MeetingDao.Columns.Id, req.Id).Update()
			if err != nil {
				return myerrors.DbError("更新会议失败")
			}
		}

		// 全量替换参会人员
		if len(req.UserIds) > 0 {
			if _, err := s.AttendeeDao.TX(tx).
				Where(s.AttendeeDao.Columns.MeetingId, req.Id).Delete(); err != nil {
				return myerrors.DbError("清除旧参会人员失败")
			}
			if err := s.batchInsertAttendees(tx, req.Id, req.UserIds, req.UserNames); err != nil {
				return err
			}
		}
		return nil
	})
}

// DeleteByIds 删除会议（软删除会议及参会人员）
func (s *PlatMeetingService) DeleteByIds(ids []int64) error {
	if len(ids) == 0 {
		return myerrors.TipsError("请选择需要删除的记录")
	}

	return s.MeetingDao.Transaction(context.TODO(), func(ctx context.Context, tx *gdb.TX) error {
		// 软删除参会人员
		for _, id := range ids {
			if _, err := s.AttendeeDao.TX(tx).
				Where(s.AttendeeDao.Columns.MeetingId, id).Delete(); err != nil {
				return myerrors.DbError("删除参会人员失败")
			}
		}
		// 软删除会议
		if _, err := s.MeetingDao.TX(tx).WhereIn(s.MeetingDao.Columns.Id, ids).Delete(); err != nil {
			return myerrors.DbError("删除会议失败")
		}
		return nil
	})
}

// AddAttendees 追加参会人员
func (s *PlatMeetingService) AddAttendees(req *opsdevmodel.PlatMeetingAddAttendeeReq) error {
	// 校验会议存在
	var entity opsdevmodel.PlatMeeting
	err := s.MeetingDao.FieldsEx(s.MeetingDao.Columns.DeletedTime).
		WherePri(s.MeetingDao.Columns.Id, req.MeetingId).Scan(&entity)
	if err != nil {
		return myerrors.DbError("查询会议失败")
	}
	if entity.Id <= 0 {
		return myerrors.TipsError("会议不存在")
	}

	return s.MeetingDao.Transaction(context.TODO(), func(ctx context.Context, tx *gdb.TX) error {
		// 查询已存在参会人，避免重复插入
		existing, err := s.AttendeeDao.TX(tx).
			Where(s.AttendeeDao.Columns.MeetingId, req.MeetingId).
			WhereIn(s.AttendeeDao.Columns.UserId, req.UserIds).
			Fields(s.AttendeeDao.Columns.UserId).All()
		if err != nil {
			return myerrors.DbError("查询已有参会人员失败")
		}

		existingIds := make(map[int]bool)
		for _, row := range existing {
			existingIds[row["user_id"].Int()] = true
		}

		for i, userId := range req.UserIds {
			if existingIds[userId] {
				continue
			}
			userName := ""
			if i < len(req.UserNames) {
				userName = req.UserNames[i]
			}
			attendeeData := g.Map{
				s.AttendeeDao.Columns.MeetingId: req.MeetingId,
				s.AttendeeDao.Columns.UserId:    userId,
				s.AttendeeDao.Columns.UserName:  userName,
			}
			service.SetCreatedInfo(attendeeData, s.GetCxtUserId(), s.GetCxtUserName())
			if _, err := s.AttendeeDao.TX(tx).Data(attendeeData).Insert(); err != nil {
				return myerrors.DbError("新增参会人员失败")
			}
		}
		return nil
	})
}

// Complete 结束会议——为发起人和参会人员补生成工时
func (s *PlatMeetingService) Complete(req *opsdevmodel.PlatMeetingCompleteReq) error {
	var entity opsdevmodel.PlatMeeting
	err := s.MeetingDao.FieldsEx(s.MeetingDao.Columns.DeletedTime).
		WherePri(s.MeetingDao.Columns.Id, req.Id).Scan(&entity)
	if err != nil {
		return myerrors.DbError("查询会议失败")
	}
	if entity.Id <= 0 {
		return myerrors.TipsError("会议不存在")
	}
	if entity.Duration <= 0 {
		return myerrors.TipsError("会议时长未设置，无法生成工时")
	}

	return s.MeetingDao.Transaction(context.TODO(), func(ctx context.Context, tx *gdb.TX) error {
		workDate := gtime.Now()
		if entity.MeetingDate != nil {
			workDate = entity.MeetingDate
		}

		// 检查发起人工时是否已存在
		orgCount, err := s.WorkHourDao.TX(tx).FieldsEx(s.WorkHourDao.Columns.DeletedTime).
			Where(s.WorkHourDao.Columns.MeetingId, req.Id).
			Where(s.WorkHourDao.Columns.UserId, entity.OrganizerId).
			Where(s.WorkHourDao.Columns.AttendeeId, 0).Count()
		if err != nil {
			return myerrors.DbError("查询发起人工时失败")
		}
		if orgCount == 0 {
			orgWhData := g.Map{
				s.WorkHourDao.Columns.MeetingId:  req.Id,
				s.WorkHourDao.Columns.AttendeeId: 0,
				s.WorkHourDao.Columns.UserId:     entity.OrganizerId,
				s.WorkHourDao.Columns.UserName:   entity.OrganizerName,
				s.WorkHourDao.Columns.WorkDate:   workDate,
				s.WorkHourDao.Columns.WorkHour:   entity.Duration,
				s.WorkHourDao.Columns.Remark:     entity.MeetingTitle,
			}
			service.SetCreatedInfo(orgWhData, s.GetCxtUserId(), s.GetCxtUserName())
			if _, err := s.WorkHourDao.TX(tx).Data(orgWhData).Insert(); err != nil {
				return myerrors.DbError("生成发起人工时失败")
			}
		}

		// 查询未生成工时的参会人员
		attendees, err := s.AttendeeDao.TX(tx).FieldsEx(s.AttendeeDao.Columns.DeletedTime).
			Where(s.AttendeeDao.Columns.MeetingId, req.Id).
			Where(s.AttendeeDao.Columns.WorkHourGenerated, 0).All()
		if err != nil {
			return myerrors.DbError("查询参会人员失败")
		}

		for _, row := range attendees {
			whData := g.Map{
				s.WorkHourDao.Columns.MeetingId:  req.Id,
				s.WorkHourDao.Columns.AttendeeId: row.Id,
				s.WorkHourDao.Columns.UserId:     row.UserId,
				s.WorkHourDao.Columns.UserName:   row.UserName,
				s.WorkHourDao.Columns.WorkDate:   workDate,
				s.WorkHourDao.Columns.WorkHour:   entity.Duration,
				s.WorkHourDao.Columns.Remark:     entity.MeetingTitle,
			}
			service.SetCreatedInfo(whData, s.GetCxtUserId(), s.GetCxtUserName())
			if _, err := s.WorkHourDao.TX(tx).Data(whData).Insert(); err != nil {
				return myerrors.DbError("生成参会人工时失败")
			}
		}

		// 标记参会人工时已生成
		if _, err := s.AttendeeDao.TX(tx).
			Data(g.Map{s.AttendeeDao.Columns.WorkHourGenerated: 1}).
			Where(s.AttendeeDao.Columns.MeetingId, req.Id).Update(); err != nil {
			return myerrors.DbError("更新参会人标记失败")
		}

		return nil
	})
}

// GetWorkHourList 获取会议工时记录列表
func (s *PlatMeetingService) GetWorkHourList(meetingId int) ([]*opsdevmodel.PlatMeetingWorkHourRsp, error) {
	var entities []*opsdevmodel.PlatMeetingWorkHour
	err := s.WorkHourDao.FieldsEx(s.WorkHourDao.Columns.DeletedTime).
		Where(s.WorkHourDao.Columns.MeetingId, meetingId).
		Order(s.WorkHourDao.Columns.Id + " asc").Scan(&entities)
	if err != nil {
		return nil, myerrors.DbError("查询工时记录失败")
	}

	var list []*opsdevmodel.PlatMeetingWorkHourRsp
	if err := gconv.Structs(entities, &list); err != nil {
		return nil, myerrors.DbError("数据转换失败")
	}
	return list, nil
}

// getAttendeesByMeetingId 根据会议ID查询参会人员
func (s *PlatMeetingService) getAttendeesByMeetingId(meetingId int) ([]*opsdevmodel.PlatMeetingAttendeeRsp, error) {
	var entities []*opsdevmodel.PlatMeetingAttendee
	err := s.AttendeeDao.FieldsEx(s.AttendeeDao.Columns.DeletedTime).
		Where(s.AttendeeDao.Columns.MeetingId, meetingId).
		Order(s.AttendeeDao.Columns.Id + " asc").Scan(&entities)
	if err != nil {
		return nil, myerrors.DbError("查询参会人员失败")
	}

	var list []*opsdevmodel.PlatMeetingAttendeeRsp
	if err := gconv.Structs(entities, &list); err != nil {
		return nil, myerrors.DbError("数据转换失败")
	}
	return list, nil
}

// batchInsertAttendees 批量新增参会人员（需在事务内调用）
func (s *PlatMeetingService) batchInsertAttendees(
	tx *gdb.TX, meetingId int, userIds []int, userNames []string,
) error {
	for i, userId := range userIds {
		userName := ""
		if i < len(userNames) {
			userName = userNames[i]
		}
		data := g.Map{
			s.AttendeeDao.Columns.MeetingId: meetingId,
			s.AttendeeDao.Columns.UserId:    userId,
			s.AttendeeDao.Columns.UserName:  userName,
		}
		service.SetCreatedInfo(data, s.GetCxtUserId(), s.GetCxtUserName())
		if _, err := s.AttendeeDao.TX(tx).Data(data).Insert(); err != nil {
			return myerrors.DbError("新增参会人员失败")
		}
	}
	return nil
}