/*
The tokenfactory module allows any account to create a new token with
the name `factory/{creator address}/{subdenom}`.

- Mint and burn user denom to and form any account
- Create a transfer of their denom between any two accounts
- Change the admin. In the future, more admin capabilities may be added.
*/
package tokenfactory

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

	"github.com/cosmos/cosmos-sdk/client"
	"github.com/cosmos/cosmos-sdk/codec"
	cdctypes "github.com/cosmos/cosmos-sdk/codec/types"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/types/module"
	"github.com/gorilla/mux"
	"github.com/grpc-ecosystem/grpc-gateway/runtime"
	"github.com/spf13/cobra"
	abci "github.com/tendermint/tendermint/abci/types"

	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
	simulation "github.com/wormhole-foundation/wormchain/x/tokenfactory/simulation"

	"github.com/wormhole-foundation/wormchain/x/tokenfactory/client/cli"
	"github.com/wormhole-foundation/wormchain/x/tokenfactory/keeper"
	"github.com/wormhole-foundation/wormchain/x/tokenfactory/types"
)

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

// ----------------------------------------------------------------------------
// AppModuleBasic
// ----------------------------------------------------------------------------

// AppModuleBasic implements the AppModuleBasic interface for the capability module.
type AppModuleBasic struct{}

func NewAppModuleBasic() AppModuleBasic {
	return AppModuleBasic{}
}

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

func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
	types.RegisterCodec(cdc)
}

// RegisterInterfaces registers the module's interface types
func (a AppModuleBasic) RegisterInterfaces(reg cdctypes.InterfaceRegistry) {
	types.RegisterInterfaces(reg)
}

// DefaultGenesis returns the x/tokenfactory module's default genesis state.
func (AppModuleBasic) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage {
	return cdc.MustMarshalJSON(types.DefaultGenesis())
}

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

	return genState.Validate()
}

// RegisterRESTRoutes registers the capability module's REST service handlers.
func (AppModuleBasic) RegisterRESTRoutes(_ client.Context, _ *mux.Router) {
}

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

// GetTxCmd returns the x/tokenfactory module's root tx command.
func (a AppModuleBasic) GetTxCmd() *cobra.Command {
	return cli.GetTxCmd()
}

// GetQueryCmd returns the x/tokenfactory module's root query command.
func (AppModuleBasic) GetQueryCmd() *cobra.Command {
	return cli.GetQueryCmd()
}

// ----------------------------------------------------------------------------
// AppModule
// ----------------------------------------------------------------------------

// AppModule implements the AppModule interface for the capability module.
type AppModule struct {
	AppModuleBasic

	keeper        keeper.Keeper
	accountKeeper types.AccountKeeper
	bankKeeper    types.BankKeeper
}

func NewAppModule(
	keeper keeper.Keeper,
	accountKeeper types.AccountKeeper,
	bankKeeper types.BankKeeper,
) AppModule {
	return AppModule{
		AppModuleBasic: NewAppModuleBasic(),
		keeper:         keeper,
		accountKeeper:  accountKeeper,
		bankKeeper:     bankKeeper,
	}
}

// Name returns the x/tokenfactory module's name.
func (am AppModule) Name() string {
	return am.AppModuleBasic.Name()
}

// Route returns the x/tokenfactory module's message routing key.
func (am AppModule) Route() sdk.Route {
	return sdk.Route{}
}

// QuerierRoute returns the x/tokenfactory module's query routing key.
func (AppModule) QuerierRoute() string { return types.QuerierRoute }

// LegacyQuerierHandler returns the x/tokenfactory module's Querier.
func (am AppModule) LegacyQuerierHandler(_ *codec.LegacyAmino) sdk.Querier {
	return nil
}

// RegisterServices registers a GRPC query service to respond to the
// module-specific GRPC queries.
func (am AppModule) RegisterServices(cfg module.Configurator) {
	types.RegisterMsgServer(cfg.MsgServer(), keeper.NewMsgServerImpl(am.keeper))
	types.RegisterQueryServer(cfg.QueryServer(), am.keeper)
}

// RegisterInvariants registers the x/tokenfactory module's invariants.
func (am AppModule) RegisterInvariants(_ sdk.InvariantRegistry) {}

// InitGenesis performs the x/tokenfactory module's genesis initialization. It
// returns no validator updates.
func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, gs json.RawMessage) []abci.ValidatorUpdate {
	var genState types.GenesisState
	cdc.MustUnmarshalJSON(gs, &genState)

	am.keeper.InitGenesis(ctx, genState)

	return []abci.ValidatorUpdate{}
}

// ExportGenesis returns the x/tokenfactory module's exported genesis state as raw
// JSON bytes.
func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage {
	genState := am.keeper.ExportGenesis(ctx)
	return cdc.MustMarshalJSON(genState)
}

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

// BeginBlock executes all ABCI BeginBlock logic respective to the tokenfactory module.
func (am AppModule) BeginBlock(_ sdk.Context, _ abci.RequestBeginBlock) {}

// EndBlock executes all ABCI EndBlock logic respective to the tokenfactory module. It
// returns no validator updates.
func (am AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
	return []abci.ValidatorUpdate{}
}

// ___________________________________________________________________________

// AppModuleSimulationV2 functions

// // GenerateGenesisState creates a randomized GenState of the tokenfactory module.
// func (am AppModule) SimulatorGenesisState(simState *module.SimulationState, s *simtypes.SimCtx) {
// 	tfDefaultGen := types.DefaultGenesis()
// 	tfDefaultGen.Params.DenomCreationFee = sdk.NewCoins(sdk.NewCoin("stake", sdk.NewInt(10000000)))
// 	tfDefaultGenJson := simState.Cdc.MustMarshalJSON(tfDefaultGen)
// 	simState.GenState[types.ModuleName] = tfDefaultGenJson
// }

// // WeightedOperations returns the all the lockup module operations with their respective weights.
// func (am AppModule) Actions() []simtypes.Action {
// 	return []simtypes.Action{
// 		simtypes.NewMsgBasedAction("create token factory token", am.keeper, simulation.RandomMsgCreateDenom),
// 		simtypes.NewMsgBasedAction("mint token factory token", am.keeper, simulation.RandomMsgMintDenom),
// 		simtypes.NewMsgBasedAction("burn token factory token", am.keeper, simulation.RandomMsgBurnDenom),
// 		simtypes.NewMsgBasedAction("change admin token factory token", am.keeper, simulation.RandomMsgChangeAdmin),
// 	}
// }

// ____________________________________________________________________________

// AppModuleSimulation functions
func (AppModule) GenerateGenesisState(simState *module.SimulationState) {
	simulation.RandomizedGenState(simState)
}

// GenerateGenesisState creates a randomized GenState of the bank module.
func (am AppModule) ProposalContents(_ module.SimulationState) []simtypes.WeightedProposalContent {
	return nil
}

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

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

// WeightedOperations returns the all the gov module operations with their respective weights.
func (am AppModule) WeightedOperations(simState module.SimulationState) []simtypes.WeightedOperation {
	return simulation.WeightedOperations(&simState, am.keeper, am.accountKeeper, am.bankKeeper)
}