Host RPC: use checksum format for contract addresses (#1674)

go/host/rpc/clientapi/client_api_obscuro.go

@@ -1,6 +1,7 @@
 package clientapi
 
 import (
+	gethcommon "github.com/ethereum/go-ethereum/common"
 	"github.com/ten-protocol/go-ten/go/common"
 	"github.com/ten-protocol/go-ten/go/common/host"
 )
@@ -22,6 +23,35 @@ func (api *ObscuroAPI) Health() (*host.HealthCheck, error) {
 }
 
 // Config returns the config status of obscuro host + enclave + db
-func (api *ObscuroAPI) Config() (*common.ObscuroNetworkInfo, error) {
-	return api.host.ObscuroConfig()
+func (api *ObscuroAPI) Config() (*ChecksumFormattedObscuroNetworkConfig, error) {
+	config, err := api.host.ObscuroConfig()
+	if err != nil {
+		return nil, err
+	}
+	return checksumFormatted(config), nil
+}
+
+// ChecksumFormattedObscuroNetworkConfig serialises the addresses as EIP55 checksum addresses.
+type ChecksumFormattedObscuroNetworkConfig struct {
+	ManagementContractAddress gethcommon.AddressEIP55
+	L1StartHash               gethcommon.Hash
+	SequencerID               gethcommon.AddressEIP55
+	MessageBusAddress         gethcommon.AddressEIP55
+	L2MessageBusAddress       gethcommon.AddressEIP55
+	ImportantContracts        map[string]gethcommon.AddressEIP55 // map of contract name to address
+}
+
+func checksumFormatted(info *common.ObscuroNetworkInfo) *ChecksumFormattedObscuroNetworkConfig {
+	importantContracts := make(map[string]gethcommon.AddressEIP55)
+	for name, addr := range info.ImportantContracts {
+		importantContracts[name] = gethcommon.AddressEIP55(addr)
+	}
+	return &ChecksumFormattedObscuroNetworkConfig{
+		ManagementContractAddress: gethcommon.AddressEIP55(info.ManagementContractAddress),
+		L1StartHash:               info.L1StartHash,
+		SequencerID:               gethcommon.AddressEIP55(info.SequencerID),
+		MessageBusAddress:         gethcommon.AddressEIP55(info.MessageBusAddress),
+		L2MessageBusAddress:       gethcommon.AddressEIP55(info.L2MessageBusAddress),
+		ImportantContracts:        importantContracts,
+	}
 }