package p2p

import (
	"reflect"

	p2ppb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
)

// RPCTopicMappings represent the protocol ID to protobuf message type map for easy
// lookup. These mappings should be used for outbound sending only. Peers may respond
// with a different message type as defined by the p2p protocol.
var RPCTopicMappings = map[string]interface{}{
	"/eth2/beacon_chain/req/status/1":                 &p2ppb.Status{},
	"/eth2/beacon_chain/req/goodbye/1":                new(uint64),
	"/eth2/beacon_chain/req/beacon_blocks_by_range/1": &p2ppb.BeaconBlocksByRangeRequest{},
	"/eth2/beacon_chain/req/beacon_blocks_by_root/1":  [][32]byte{},
}

// RPCTypeMapping is the inverse of RPCTopicMappings so that an arbitrary protobuf message
// can be mapped to a protocol ID string.
var RPCTypeMapping = make(map[reflect.Type]string)

func init() {
	for k, v := range RPCTopicMappings {
		RPCTypeMapping[reflect.TypeOf(v)] = k
	}
}