module.go

package module

import (
	"context"
	"encoding/json"
	"fmt"
	"math/rand"

	"github.com/gorilla/mux"
	"github.com/grpc-ecosystem/grpc-gateway/runtime"
	"github.com/spf13/cobra"
	flag "github.com/spf13/pflag"

	abci "github.com/tendermint/tendermint/abci/types"
	cfg "github.com/tendermint/tendermint/config"

	"github.com/cosmos/cosmos-sdk/client"
	"github.com/cosmos/cosmos-sdk/client/tx"
	"github.com/cosmos/cosmos-sdk/codec"
	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/types/module"
	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"

	"github.com/bianjieai/iritamod/modules/node"
	"github.com/bianjieai/iritamod/modules/node/client/cli"
	"github.com/bianjieai/iritamod/modules/node/client/rest"
	"github.com/bianjieai/iritamod/modules/node/keeper"
	"github.com/bianjieai/iritamod/modules/node/types"

	spartannode "github.com/bianjieai/spartan-cosmos/module/node"
	spartannodekeeper "github.com/bianjieai/spartan-cosmos/module/node/keeper"
)

var (
	_ module.AppModule           = AppModule{}
	_ module.AppModuleBasic      = AppModuleBasic{}
	_ module.AppModuleSimulation = AppModule{}
)

// AppModuleBasic defines the basic application module used by the node module.
type AppModuleBasic struct {
	cdc codec.Codec
}

// Name returns the node module's name.
func (AppModuleBasic) Name() string {
	return types.ModuleName
}

// RegisterLegacyAminoCodec registers the node module's types for the given codec.
func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
	types.RegisterLegacyAminoCodec(cdc)
}

// DefaultGenesis returns default genesis state as raw bytes for the node module.
func (AppModuleBasic) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage {
	return cdc.MustMarshalJSON(types.DefaultGenesisState())
}

// ValidateGenesis performs genesis state validation for the node module.
func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncodingConfig, bz json.RawMessage) error {
	var data types.GenesisState
	if err := cdc.UnmarshalJSON(bz, &data); err != nil {
		return fmt.Errorf("failed to unmarshal %s genesis state: %w", types.ModuleName, err)
	}

	return node.ValidateGenesis(data)
}

// RegisterRESTRoutes registers the REST routes for the node module.
func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {
	rest.RegisterRoutes(clientCtx, rtr)
}

// RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the node module.
func (a AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
	_ = types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx))
}

// GetTxCmd returns the root tx command for the node module.
func (AppModuleBasic) GetTxCmd() *cobra.Command {
	return nil
}

// GetQueryCmd returns the root query command for the node module.
func (AppModuleBasic) GetQueryCmd() *cobra.Command {
	return cli.GetQueryCmd()
}

// RegisterInterfaces registers interfaces and implementations of the node module.
func (AppModuleBasic) RegisterInterfaces(registry codectypes.InterfaceRegistry) {
	types.RegisterInterfaces(registry)
	spartannode.RegisterInterfaces(registry)
}

// _____________________________________
// extra helpers

// CreateValidatorMsgHelpers - used for gen-tx
func (AppModuleBasic) CreateValidatorMsgHelpers(ipDefault string) (
	fs *flag.FlagSet, pubkeyFlag, powerFlag, defaultsDesc string) {
	return cli.CreateValidatorMsgHelpers(ipDefault)
}

// PrepareFlagsForTxCreateValidator - used for gen-tx
func (AppModuleBasic) PrepareFlagsForTxCreateValidator(config *cfg.Config, nodeID string, chainID string, cert string) {
	cli.PrepareFlagsForTxCreateValidator(config, nodeID, chainID, cert)
}

// BuildCreateValidatorMsg - used for gen-tx
func (AppModuleBasic) BuildCreateValidatorMsg(cliCtx client.Context, txBldr tx.Factory) (tx.Factory, sdk.Msg, error) {
	return cli.BuildCreateValidatorMsg(cliCtx, txBldr)
}

// ____________________________________________________________________________

// AppModule implements an application module for the node module.
type AppModule struct {
	AppModuleBasic

	k spartannodekeeper.Keeper
}

// NewAppModule creates a new AppModule object
func NewAppModule(cdc codec.Codec, keeper spartannodekeeper.Keeper) AppModule {
	return AppModule{
		AppModuleBasic: AppModuleBasic{cdc: cdc},
		k:              keeper,
	}
}

// Name returns the node module's name.
func (AppModule) Name() string {
	return types.ModuleName
}

// RegisterServices registers module services.
func (am AppModule) RegisterServices(cfg module.Configurator) {
	types.RegisterMsgServer(cfg.MsgServer(), am.k)
	types.RegisterQueryServer(cfg.QueryServer(), keeper.Querier{Keeper: am.k.Keeper})
}

// RegisterInvariants registers the node module invariants.
func (am AppModule) RegisterInvariants(ir sdk.InvariantRegistry) {}

// Route returns the message routing key for the node module.
func (am AppModule) Route() sdk.Route {
	return sdk.NewRoute(types.RouterKey, nil) //TODO
}

// QuerierRoute returns the node module's querier route name.
func (AppModule) QuerierRoute() string {
	return types.QuerierRoute
}

// LegacyQuerierHandler returns the node module sdk.Querier.
func (am AppModule) LegacyQuerierHandler(legacyQuerierCdc *codec.LegacyAmino) sdk.Querier {
	return keeper.NewQuerier(am.k.Keeper, legacyQuerierCdc)
}

// InitGenesis performs genesis initialization for the node module. It returns
// no validator updates.
func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate {
	var genesisState types.GenesisState
	cdc.MustUnmarshalJSON(data, &genesisState)
	return node.InitGenesis(ctx, am.cdc, am.k.Keeper, genesisState)
}

// ExportGenesis returns the exported genesis state as raw bytes for the node module.
func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage {
	gs := node.ExportGenesis(ctx, am.k.Keeper)
	return cdc.MustMarshalJSON(gs)
}

// ConsensusVersion implements AppModule/ConsensusVersion.
func (AppModule) ConsensusVersion() uint64 { return 1 }

// BeginBlock returns the begin blocker for the node module.
func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock) {
	node.BeginBlocker(ctx, am.k.Keeper)
}

// EndBlock returns the end blocker for the node module. It returns no validator updates.
func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
	return node.EndBlocker(ctx, am.k.Keeper)
}

// ____________________________________________________________________________

// AppModuleSimulation functions

// GenerateGenesisState creates a randomized GenState of the node module.
func (AppModule) GenerateGenesisState(simState *module.SimulationState) {}

// ProposalContents doesn't return any content functions for governance proposals.
func (AppModule) ProposalContents(simState module.SimulationState) []simtypes.WeightedProposalContent {
	return nil
}

// RandomizedParams creates randomized node param changes for the simulator.
func (AppModule) RandomizedParams(r *rand.Rand) []simtypes.ParamChange {
	return nil
}

// RegisterStoreDecoder registers a decoder for node module's types
func (am AppModule) RegisterStoreDecoder(sdr sdk.StoreDecoderRegistry) {}

// WeightedOperations returns the all the node module operations with their respective weights.
func (am AppModule) WeightedOperations(simState module.SimulationState) []simtypes.WeightedOperation {
	return nil
}