package service

import (
	"context"
	"fmt"
	v1 "github.com/go-nunu/nunu-layout-advanced/api/v1"
	"github.com/go-nunu/nunu-layout-advanced/internal/model"
	"github.com/go-nunu/nunu-layout-advanced/internal/repository"
	"github.com/spf13/viper"
	"golang.org/x/sync/errgroup"
	"strconv"
	"time"
)

type GlobalLimitService interface {
	GetGlobalLimit(ctx context.Context, id int64) (*model.GlobalLimit, error)
	AddGlobalLimit(ctx context.Context, req v1.GlobalLimitRequest) error
	EditGlobalLimit(ctx context.Context, req v1.GlobalLimitRequest) error
	DeleteGlobalLimit(ctx context.Context, req v1.GlobalLimitRequest) error
	EditGlobalLimitBySnail(ctx context.Context, req v1.GlobalLimitEditRequest) error
}

func NewGlobalLimitService(
	service *Service,
	globalLimitRepository repository.GlobalLimitRepository,
	duedate DuedateService,
	crawler CrawlerService,
	conf *viper.Viper,
	required RequiredService,
	parser ParserService,
	host HostService,
	tcpLimit TcpLimitService,
	udpLimit UdpLimitService,
	webLimit WebLimitService,
	gateWayGroup GatewayGroupService,
	hostRep repository.HostRepository,
	gateWayGroupRep repository.GatewayGroupRepository,
	cdnService CdnService,
) GlobalLimitService {
	return &globalLimitService{
		Service:               service,
		globalLimitRepository: globalLimitRepository,
		duedate:               duedate,
		crawler:               crawler,
		Url:                   conf.GetString("crawler.Url"),
		required:              required,
		parser:                parser,
		host:                  host,
		tcpLimit:              tcpLimit,
		udpLimit:              udpLimit,
		webLimit:              webLimit,
		gateWayGroup:          gateWayGroup,
		hostRep:                hostRep,
		gateWayGroupRep:       gateWayGroupRep,
		cdnService:            cdnService,
	}
}

type globalLimitService struct {
	*Service
	globalLimitRepository repository.GlobalLimitRepository
	duedate               DuedateService
	crawler               CrawlerService
	Url                   string
	required              RequiredService
	parser                ParserService
	host                  HostService
	tcpLimit              TcpLimitService
	udpLimit              UdpLimitService
	webLimit              WebLimitService
	gateWayGroup          GatewayGroupService
	hostRep               repository.HostRepository
	gateWayGroupRep       repository.GatewayGroupRepository
	cdnService            CdnService
}

func (s *globalLimitService) GetCdnUserId(ctx context.Context, uid int64) (int64, error) {
	data, err := s.globalLimitRepository.GetGlobalLimitFirst(ctx, uid)
	if err != nil {
		return 0, err
	}
	if data != nil && data.CdnUid != 0 {
		return int64(data.CdnUid), nil
	}
	userInfo,err := s.globalLimitRepository.GetUserInfo(ctx, uid)
	if err != nil {
		return 0, err
	}
	userId, err := s.cdnService.AddUser(ctx, v1.User{
		Username: userInfo.Username,
		Email:    userInfo.Email,
		Fullname: userInfo.Username,
		Mobile:   userInfo.PhoneNumber,
	})
	if err != nil {
		return 0, err
	}
	return userId, nil
}

func (s *globalLimitService) AddGroupId(ctx context.Context,groupName string) (int64, error)  {
	groupId, err := s.cdnService.CreateGroup(ctx, v1.Group{
		Name: groupName,
	})
	if err != nil {
		return 0, err
	}
	return groupId, nil
}

func (s *globalLimitService) GlobalLimitRequire(ctx context.Context, req v1.GlobalLimitRequest) (res v1.GlobalLimitRequireResponse, err error) {
	res.ExpiredAt, err = s.duedate.NextDueDate(ctx, req.Uid, req.HostId)
	if err != nil {
		return v1.GlobalLimitRequireResponse{}, err
	}
	configCount, err := s.host.GetGlobalLimitConfig(ctx, req.HostId)
	if err != nil {
		return v1.GlobalLimitRequireResponse{}, fmt.Errorf("获取配置限制失败: %w", err)
	}

	bpsInt, err := strconv.Atoi(configCount.Bps)
	if err != nil {
		return v1.GlobalLimitRequireResponse{}, err
	}
	resultFloat := float64(bpsInt) / 2.0 / 8.0
	res.Bps = strconv.FormatFloat( resultFloat, 'f', -1, 64) + "M"

	res.MaxBytesMonth = configCount.MaxBytesMonth
	res.Operator = configCount.Operator
	res.IpCount = configCount.IpCount
	domain, err := s.hostRep.GetDomainById(ctx, req.HostId)
	if err != nil {
		return v1.GlobalLimitRequireResponse{}, err
	}
	res.GlobalLimitName = strconv.Itoa(req.Uid) + "_" + strconv.Itoa(req.HostId) + "_" + domain
	return res, nil
}

func (s *globalLimitService) GetGlobalLimit(ctx context.Context, id int64) (*model.GlobalLimit, error) {
	return s.globalLimitRepository.GetGlobalLimit(ctx, id)
}

func (s *globalLimitService) AddGlobalLimit(ctx context.Context, req v1.GlobalLimitRequest) error {
	isExist, err := s.globalLimitRepository.IsGlobalLimitExistByHostId(ctx, int64(req.HostId))
	if err != nil {
		return err
	}
	if isExist {
		return fmt.Errorf("配置限制已存在")
	}
	require, err := s.GlobalLimitRequire(ctx, req)
	if err != nil {
		return err
	}

	g, gCtx := errgroup.WithContext(ctx)
	var gatewayGroupId int
	var userId int64
	var groupId int64
	g.Go(func() error {
		gatewayGroupId, e := s.gateWayGroupRep.GetGatewayGroupWhereHostIdNull(gCtx, require.Operator, require.IpCount)
		if e != nil {
			return e
		}
		if gatewayGroupId == 0 {
			return fmt.Errorf("获取网关组失败")
		}
		return nil
	})



	g.Go(func() error {
		res, e := s.GetCdnUserId(gCtx, int64(req.Uid))
		if e != nil {
			return e
		}
		if res == 0 {
			return fmt.Errorf("获取cdn用户失败")
		}
		userId = res
		return nil
	})

	g.Go(func() error {
		res, e := s.AddGroupId(gCtx, require.GlobalLimitName)
		if e != nil {
			return e
		}
		if res == 0 {
			return fmt.Errorf("创建规则分组失败")
		}
		return nil
	})

	if err = g.Wait(); err != nil {
		return err
	}

	ruleId, err := s.cdnService.BindPlan(ctx, v1.Plan{

	})

	err = s.globalLimitRepository.AddGlobalLimit(ctx, &model.GlobalLimit{
		HostId:    req.HostId,
		Uid:       req.Uid,
		RuleId:    ,
		CdnUid:    int(userId),
		Comment:   req.Comment,
		ExpiredAt: require.ExpiredAt,
	})
	if err != nil {
		return err
	}
	return nil
}

func (s *globalLimitService) EditGlobalLimit(ctx context.Context, req v1.GlobalLimitRequest) error {
	require, err := s.GlobalLimitRequire(ctx, req)
	if err != nil {
		return err
	}
	formData := map[string]interface{}{
		"tag":             require.GlobalLimitName,
		"bps":             require.Bps,
		"max_bytes_month": require.MaxBytesMonth,
		"expired_at":      require.ExpiredAt,
	}
	data, err :=  s.globalLimitRepository.GetGlobalLimitByHostId(ctx, int64(req.HostId))
	if err != nil {
		return err
	}
	respBody, err := s.required.SendForm(ctx, "admin/info/waf_common_limit/edit?&__goadmin_edit_pk="+strconv.Itoa(data.RuleId), "admin/edit/waf_common_limit", formData)
	if err != nil {
		return err
	}
	res, err := s.parser.ParseAlert(string(respBody))
	if err != nil {
		return err
	}
	if res != "" {
		return fmt.Errorf(res)
	}
	t, err := time.Parse("2006-01-02 15:04:05", require.ExpiredAt)
	if err != nil {
		return err
	}
	expiredAt := t.Unix()
	if err := s.globalLimitRepository.UpdateGlobalLimitByHostId(ctx, &model.GlobalLimit{
		HostId:  req.HostId,
		Comment: req.Comment,
		ExpiredAt: expiredAt,
	}); err != nil {
		return err
	}
	return nil
}

func (s *globalLimitService) EditGlobalLimitBySnail(ctx context.Context, req v1.GlobalLimitEditRequest) error {
	configCount, err := s.host.GetGlobalLimitConfig(ctx, req.HostId)
	if err != nil {
		return fmt.Errorf("获取配置限制失败: %w", err)
	}
	data, err := s.globalLimitRepository.GetGlobalLimitByHostId(ctx, int64(req.HostId))
	if err != nil {
		return err
	}
	t := time.Unix(req.ExpiredAt, 0)
	expiredAt := t.Format("2006-01-02 15:04:05")
	formData := map[string]interface{}{
		"tag":             data.GlobalLimitName,
		"bps":             configCount.Bps,
		"max_bytes_month": configCount.MaxBytesMonth,
		"expired_at":      expiredAt,
	}

	respBody, err := s.required.SendForm(ctx, "admin/info/waf_common_limit/edit?&__goadmin_edit_pk="+strconv.Itoa(req.RuleId), "admin/edit/waf_common_limit", formData)

	if err != nil {
		return err
	}
	if respBody == nil {
		return nil
	}
	return nil

}

func (s *globalLimitService) DeleteGlobalLimit(ctx context.Context, req v1.GlobalLimitRequest) error {
	if err := s.globalLimitRepository.DeleteGlobalLimitByHostId(ctx, int64(req.HostId)); err != nil {
		return err
	}
	return nil
}