package syncer

import (
	appchainmgr "github.com/meshplus/bitxhub-core/appchain-mgr"

	rpcx "gitlab.33.cn/link33/sidecar/hub/client"
	"gitlab.33.cn/link33/sidecar/model/pb"
)

type IBTPHandler func(ibtp *pb.IBTP)

type AppchainHandler func() error

type RecoverUnionHandler func(ibtp *pb.IBTP) (*rpcx.Interchain, error)

type RollbackHandler func(ibtp *pb.IBTP)

//go:generate mockgen -destination mock_syncer/mock_syncer.go -package mock_syncer -source interface.go
type Syncer interface {
	// QueryInterchainMeta queries meta including interchain and receipt related meta from bitxhub
	QueryInterchainMeta() *pb.Interchain

	// QueryIBTP query ibtp from bitxhub by its id.
	// if error occurs, it means this ibtp is not existed on bitxhub
	QueryIBTP(ibtpID string) (*pb.IBTP, bool, error)

	// ListenIBTP listen on the ibtps destined for this sidecar from bitxhub
	ListenIBTP() <-chan *pb.IBTPX

	// SendIBTP sends interchain or receipt type of ibtp to bitxhub
	// if error occurs, user need to reconstruct this ibtp cause it means ibtp is invalid on bitxhub
	SendIBTP(ibtp *pb.IBTP) error

	// GetAppchains gets appchains from bitxhub node
	// GetAppchains() ([]*appchainmgr.Appchain, error)

	////GetInterchainById gets interchain meta by appchain id
	//GetInterchainById(from string) *pb.Interchain

	// RegisterRecoverHandler registers handler that recover ibtps from bitxhub
	// RegisterRecoverHandler(RecoverUnionHandler) error

	// RegisterAppchainHandler registers handler that fetch appchains information
	// RegisterAppchainHandler(handler AppchainHandler) error

	RegisterRollbackHandler(handler RollbackHandler) error
}

type Handler interface {
	// GetAppchains gets appchains from bitxhub node
	GetAppchains() ([]*appchainmgr.Appchain, error)

	// GetInterchainById gets interchain meta by appchain id
	GetInterchainById(from string) *pb.Interchain

	// RegisterRecoverHandler registers handler that recover ibtps from bitxhub
	RegisterRecoverHandler(RecoverUnionHandler) error

	// RegisterAppchainHandler registers handler that fetch appchains information
	RegisterAppchainHandler(handler AppchainHandler) error
}