package edgegroup

import (
	"errors"
	"fmt"

	portainer "github.com/portainer/portainer/api"

	"github.com/rs/zerolog/log"
)

type ServiceTx struct {
	service *Service
	tx      portainer.Transaction
}

func (service ServiceTx) BucketName() string {
	return BucketName
}

// EdgeGroups return a slice containing all the Edge groups.
func (service ServiceTx) EdgeGroups() ([]portainer.EdgeGroup, error) {
	var groups = make([]portainer.EdgeGroup, 0)

	err := service.tx.GetAllWithJsoniter(
		BucketName,
		&portainer.EdgeGroup{},
		func(obj interface{}) (interface{}, error) {
			group, ok := obj.(*portainer.EdgeGroup)
			if !ok {
				log.Debug().Str("obj", fmt.Sprintf("%#v", obj)).Msg("failed to convert to EdgeGroup object")
				return nil, fmt.Errorf("Failed to convert to EdgeGroup object: %s", obj)
			}
			groups = append(groups, *group)

			return &portainer.EdgeGroup{}, nil
		})

	return groups, err
}

// EdgeGroup returns an Edge group by ID.
func (service ServiceTx) EdgeGroup(ID portainer.EdgeGroupID) (*portainer.EdgeGroup, error) {
	var group portainer.EdgeGroup
	identifier := service.service.connection.ConvertToKey(int(ID))

	err := service.tx.GetObject(BucketName, identifier, &group)
	if err != nil {
		return nil, err
	}

	return &group, nil
}

// UpdateEdgeGroup updates an edge group.
func (service ServiceTx) UpdateEdgeGroup(ID portainer.EdgeGroupID, group *portainer.EdgeGroup) error {
	identifier := service.service.connection.ConvertToKey(int(ID))
	return service.tx.UpdateObject(BucketName, identifier, group)
}

// UpdateEdgeGroupFunc is a no-op inside a transaction.
func (service ServiceTx) UpdateEdgeGroupFunc(ID portainer.EdgeGroupID, updateFunc func(edgeGroup *portainer.EdgeGroup)) error {
	return errors.New("cannot be called inside a transaction")
}

// DeleteEdgeGroup deletes an Edge group.
func (service ServiceTx) DeleteEdgeGroup(ID portainer.EdgeGroupID) error {
	identifier := service.service.connection.ConvertToKey(int(ID))
	return service.tx.DeleteObject(BucketName, identifier)
}

func (service ServiceTx) Create(group *portainer.EdgeGroup) error {
	return service.tx.CreateObject(
		BucketName,
		func(id uint64) (int, interface{}) {
			group.ID = portainer.EdgeGroupID(id)
			return int(group.ID), group
		},
	)
}