package hard

import (
	"context"
	"encoding/json"

	"github.com/grpc-ecosystem/grpc-gateway/runtime"
	"github.com/spf13/cobra"

	"github.com/cosmos/cosmos-sdk/client"
	"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"

	abci "github.com/cometbft/cometbft/abci/types"

	"github.com/0glabs/0g-chain/x/hard/client/cli"
	"github.com/0glabs/0g-chain/x/hard/keeper"
	"github.com/0glabs/0g-chain/x/hard/types"
)

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

// AppModuleBasic app module basics object
type AppModuleBasic struct{}

// Name get module name
func (AppModuleBasic) Name() string {
	return types.ModuleName
}

// RegisterLegacyAminoCodec register module codec
func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
	types.RegisterLegacyAminoCodec(cdc)
}

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

// ValidateGenesis performs genesis state validation for the hard module.
func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncodingConfig, bz json.RawMessage) error {
	var gs types.GenesisState
	err := cdc.UnmarshalJSON(bz, &gs)
	if err != nil {
		return err
	}
	return gs.Validate()
}

// RegisterInterfaces implements InterfaceModule.RegisterInterfaces
func (a AppModuleBasic) RegisterInterfaces(registry codectypes.InterfaceRegistry) {
	types.RegisterInterfaces(registry)
}

// RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the gov module.
func (a AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
	if err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx)); err != nil {
		panic(err)
	}
}

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

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

// GetQueryCmd returns no root query command for the hard module.
func (AppModuleBasic) GetQueryCmd() *cobra.Command {
	return cli.GetQueryCmd()
}

//____________________________________________________________________________

// AppModule app module type
type AppModule struct {
	AppModuleBasic

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

// NewAppModule creates a new AppModule object
func NewAppModule(keeper keeper.Keeper, accountKeeper types.AccountKeeper, bankKeeper types.BankKeeper, pricefeedKeeper types.PricefeedKeeper) AppModule {
	return AppModule{
		AppModuleBasic:  AppModuleBasic{},
		keeper:          keeper,
		accountKeeper:   accountKeeper,
		bankKeeper:      bankKeeper,
		pricefeedKeeper: pricefeedKeeper,
	}
}

// Name module name
func (AppModule) Name() string {
	return types.ModuleName
}

// RegisterInvariants register module invariants
func (AppModule) RegisterInvariants(_ sdk.InvariantRegistry) {}

// RegisterServices registers module services.
func (am AppModule) RegisterServices(cfg module.Configurator) {
	types.RegisterMsgServer(cfg.MsgServer(), keeper.NewMsgServerImpl(am.keeper))
	types.RegisterQueryServer(cfg.QueryServer(), keeper.NewQueryServerImpl(am.keeper, am.accountKeeper, am.bankKeeper))
}

// InitGenesis performs genesis initialization for the hard module. It returns
// no validator updates.
func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, gs json.RawMessage) []abci.ValidatorUpdate {
	var genState types.GenesisState
	// Initialize global index to index in genesis state
	cdc.MustUnmarshalJSON(gs, &genState)

	InitGenesis(ctx, am.keeper, am.accountKeeper, genState)
	return []abci.ValidatorUpdate{}
}

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

// BeginBlock module begin-block
func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock) {
	BeginBlocker(ctx, am.keeper)
}

// EndBlock module end-block
func (am AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
	return []abci.ValidatorUpdate{}
}