package repository

import (
	"context"
	"errors"
	"fmt"
	"github.com/go-nunu/nunu-layout-advanced/internal/model"
	"gorm.io/gorm"
)

type GatewayGroupRepository interface {
	GetGatewayGroup(ctx context.Context, id int64) (*model.GatewayGroup, error)
	AddGatewayGroup(ctx context.Context, req *model.GatewayGroup) error
	EditGatewayGroup(ctx context.Context, req *model.GatewayGroup) error
	DeleteGatewayGroup(ctx context.Context, req *model.GatewayGroup) error
	GetGatewayGroupWhereHostIdNull(ctx context.Context,operator int, count int) (int, error)
	GetGatewayGroupByHostId(ctx context.Context, hostId int64) (*[]model.GatewayGroup, error)
}

func NewGatewayGroupRepository(
	repository *Repository,
) GatewayGroupRepository {
	return &gatewayGroupRepository{
		Repository: repository,
	}
}

type gatewayGroupRepository struct {
	*Repository
}

func (r *gatewayGroupRepository) GetGatewayGroup(ctx context.Context, id int64) (*model.GatewayGroup, error) {
	var gatewayGroup model.GatewayGroup

	return &gatewayGroup, nil
}

func (r *gatewayGroupRepository) AddGatewayGroup(ctx context.Context, req *model.GatewayGroup) error {
	if err := r.DB(ctx).Create(req).Error; err != nil {
		return err
	}
	return nil
}

func (r *gatewayGroupRepository) EditGatewayGroup(ctx context.Context, req *model.GatewayGroup) error {
	if err := r.DB(ctx).Model(&model.GatewayGroup{}).Where("rule_id = ?", req.RuleId).Updates(req).Error; err != nil {
		return err
	}
	return nil
}

func (r *gatewayGroupRepository) DeleteGatewayGroup(ctx context.Context, req *model.GatewayGroup) error {
	if err := r.DB(ctx).Model(&model.GatewayGroup{}).Where("id = ?", req.Id).Delete(req).Error; err != nil {
		return err
	}
	return nil
}

func (r *gatewayGroupRepository) GetGatewayGroupWhereHostIdNull(ctx context.Context,operator int, count int) (int, error) {
	var id int
	subQuery := r.DB(ctx).Model(&model.GateWayGroupIp{}).
		Select("gateway_group_id").
		Group("gateway_group_id").
		Having("COUNT(*) = ?", count)

	err := r.DB(ctx).Model(&model.GatewayGroup{}).
		Where("operator = ?", operator).
		Where("id IN (?)", subQuery).
		Where("host_id = ?", 0).
		Select("rule_id").First(&id).Error
	if err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound){
			return 0, fmt.Errorf("库存不足,请联系客服补充网关组库存")
		}
		return 0, err
	}

	return id, nil
}

func (r *gatewayGroupRepository) GetGatewayGroupByHostId(ctx context.Context, hostId int64) (*[]model.GatewayGroup, error) {
	res := []model.GatewayGroup{}
	if err := r.DB(ctx).Where("host_id = ?", hostId).Find(&res).Error; err != nil {
		return nil, err
	}
	return &res, nil
}