// Copyright 2014 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.

// geth is a command-line client for Ethereum.
package main

import (
	"fmt"
	"os"
	"slices"
	"sort"
	"time"

	"github.com/ethereum/go-ethereum/accounts"
	"github.com/ethereum/go-ethereum/cmd/utils"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/console/prompt"
	"github.com/ethereum/go-ethereum/eth/downloader"
	"github.com/ethereum/go-ethereum/ethclient"
	"github.com/ethereum/go-ethereum/internal/debug"
	"github.com/ethereum/go-ethereum/internal/flags"
	"github.com/ethereum/go-ethereum/log"
	"github.com/ethereum/go-ethereum/node"
	"go.uber.org/automaxprocs/maxprocs"

	// Force-load the tracer engines to trigger registration
	_ "github.com/ethereum/go-ethereum/eth/tracers/js"
	_ "github.com/ethereum/go-ethereum/eth/tracers/live"
	_ "github.com/ethereum/go-ethereum/eth/tracers/native"

	"github.com/urfave/cli/v2"
)

const (
	clientIdentifier = "geth" // Client identifier to advertise over the network
)

var (
	// flags that configure the node
	nodeFlags = slices.Concat([]cli.Flag{
		utils.IdentityFlag,
		utils.UnlockedAccountFlag,
		utils.PasswordFileFlag,
		utils.BootnodesFlag,
		utils.MinFreeDiskSpaceFlag,
		utils.KeyStoreDirFlag,
		utils.ExternalSignerFlag,
		utils.NoUSBFlag, // deprecated
		utils.USBFlag,
		utils.SmartCardDaemonPathFlag,
		utils.OverrideOsaka,
		utils.OverrideBPO1,
		utils.OverrideBPO2,
		utils.OverrideVerkle,
		utils.OverrideGenesisFlag,
		utils.EnablePersonal, // deprecated
		utils.TxPoolLocalsFlag,
		utils.TxPoolNoLocalsFlag,
		utils.TxPoolJournalFlag,
		utils.TxPoolRejournalFlag,
		utils.TxPoolPriceLimitFlag,
		utils.TxPoolPriceBumpFlag,
		utils.TxPoolAccountSlotsFlag,
		utils.TxPoolGlobalSlotsFlag,
		utils.TxPoolAccountQueueFlag,
		utils.TxPoolGlobalQueueFlag,
		utils.TxPoolLifetimeFlag,
		utils.BlobPoolDataDirFlag,
		utils.BlobPoolDataCapFlag,
		utils.BlobPoolPriceBumpFlag,
		utils.SyncModeFlag,
		utils.SyncTargetFlag,
		utils.ExitWhenSyncedFlag,
		utils.GCModeFlag,
		utils.SnapshotFlag,
		utils.TxLookupLimitFlag, // deprecated
		utils.TransactionHistoryFlag,
		utils.ChainHistoryFlag,
		utils.LogHistoryFlag,
		utils.LogNoHistoryFlag,
		utils.LogExportCheckpointsFlag,
		utils.StateHistoryFlag,
		utils.TrienodeHistoryFlag,
		utils.TrienodeHistoryFullValueCheckpointFlag,
		utils.LightKDFFlag,
		utils.EthRequiredBlocksFlag,
		utils.LegacyWhitelistFlag, // deprecated
		utils.CacheFlag,
		utils.CacheDatabaseFlag,
		utils.CacheTrieFlag,
		utils.CacheTrieJournalFlag,   // deprecated
		utils.CacheTrieRejournalFlag, // deprecated
		utils.CacheGCFlag,
		utils.CacheSnapshotFlag,
		utils.CacheNoPrefetchFlag,
		utils.CachePreimagesFlag,
		utils.CacheLogSizeFlag,
		utils.FDLimitFlag,
		utils.CryptoKZGFlag,
		utils.ListenPortFlag,
		utils.DiscoveryPortFlag,
		utils.MaxPeersFlag,
		utils.MaxPendingPeersFlag,
		utils.MiningEnabledFlag, // deprecated
		utils.MinerGasLimitFlag,
		utils.MinerGasPriceFlag,
		utils.MinerEtherbaseFlag, // deprecated
		utils.MinerExtraDataFlag,
		utils.MinerMaxBlobsFlag,
		utils.MinerRecommitIntervalFlag,
		utils.MinerPendingFeeRecipientFlag,
		utils.MinerNewPayloadTimeoutFlag, // deprecated
		utils.NATFlag,
		utils.NoDiscoverFlag,
		utils.DiscoveryV4Flag,
		utils.DiscoveryV5Flag,
		utils.LegacyDiscoveryV5Flag, // deprecated
		utils.NetrestrictFlag,
		utils.NodeKeyFileFlag,
		utils.NodeKeyHexFlag,
		utils.DNSDiscoveryFlag,
		utils.DeveloperFlag,
		utils.DeveloperGasLimitFlag,
		utils.DeveloperPeriodFlag,
		utils.VMEnableDebugFlag,
		utils.VMTraceFlag,
		utils.VMTraceJsonConfigFlag,
		utils.VMWitnessStatsFlag,
		utils.VMStatelessSelfValidationFlag,
		utils.NetworkIdFlag,
		utils.EthStatsURLFlag,
		utils.GpoBlocksFlag,
		utils.GpoPercentileFlag,
		utils.GpoMaxGasPriceFlag,
		utils.GpoIgnoreGasPriceFlag,
		configFileFlag,
		utils.LogDebugFlag,
		utils.LogBacktraceAtFlag,
		utils.BeaconApiFlag,
		utils.BeaconApiHeaderFlag,
		utils.BeaconThresholdFlag,
		utils.BeaconNoFilterFlag,
		utils.BeaconConfigFlag,
		utils.BeaconGenesisRootFlag,
		utils.BeaconGenesisTimeFlag,
		utils.BeaconCheckpointFlag,
		utils.BeaconCheckpointFileFlag,
		utils.LogSlowBlockFlag,
	}, utils.NetworkFlags, utils.DatabaseFlags)

	rpcFlags = []cli.Flag{
		utils.HTTPEnabledFlag,
		utils.HTTPListenAddrFlag,
		utils.HTTPPortFlag,
		utils.HTTPCORSDomainFlag,
		utils.AuthListenFlag,
		utils.AuthPortFlag,
		utils.AuthVirtualHostsFlag,
		utils.JWTSecretFlag,
		utils.HTTPVirtualHostsFlag,
		utils.GraphQLEnabledFlag,
		utils.GraphQLCORSDomainFlag,
		utils.GraphQLVirtualHostsFlag,
		utils.HTTPApiFlag,
		utils.HTTPPathPrefixFlag,
		utils.WSEnabledFlag,
		utils.WSListenAddrFlag,
		utils.WSPortFlag,
		utils.WSApiFlag,
		utils.WSAllowedOriginsFlag,
		utils.WSPathPrefixFlag,
		utils.IPCDisabledFlag,
		utils.IPCPathFlag,
		utils.InsecureUnlockAllowedFlag,
		utils.RPCGlobalGasCapFlag,
		utils.RPCGlobalEVMTimeoutFlag,
		utils.RPCGlobalTxFeeCapFlag,
		utils.RPCGlobalLogQueryLimit,
		utils.AllowUnprotectedTxs,
		utils.BatchRequestLimit,
		utils.BatchResponseMaxSize,
		utils.RPCTxSyncDefaultTimeoutFlag,
		utils.RPCTxSyncMaxTimeoutFlag,
		utils.RPCGlobalRangeLimitFlag,
		utils.RPCTelemetryFlag,
		utils.RPCTelemetryEndpointFlag,
		utils.RPCTelemetryUserFlag,
		utils.RPCTelemetryPasswordFlag,
		utils.RPCTelemetryInstanceIDFlag,
		utils.RPCTelemetryTagsFlag,
		utils.RPCTelemetrySampleRatioFlag,
	}

	metricsFlags = []cli.Flag{
		utils.MetricsEnabledFlag,
		utils.MetricsEnabledExpensiveFlag,
		utils.MetricsHTTPFlag,
		utils.MetricsPortFlag,
		utils.MetricsEnableInfluxDBFlag,
		utils.MetricsInfluxDBEndpointFlag,
		utils.MetricsInfluxDBDatabaseFlag,
		utils.MetricsInfluxDBUsernameFlag,
		utils.MetricsInfluxDBPasswordFlag,
		utils.MetricsInfluxDBTagsFlag,
		utils.MetricsInfluxDBIntervalFlag,
		utils.MetricsEnableInfluxDBV2Flag,
		utils.MetricsInfluxDBTokenFlag,
		utils.MetricsInfluxDBBucketFlag,
		utils.MetricsInfluxDBOrganizationFlag,
		utils.StateSizeTrackingFlag,
	}
)

var app = flags.NewApp("the go-ethereum command line interface")

func init() {
	// Initialize the CLI app and start Geth
	app.Action = geth
	app.Commands = []*cli.Command{
		// See chaincmd.go:
		initCommand,
		importCommand,
		exportCommand,
		importHistoryCommand,
		exportHistoryCommand,
		importPreimagesCommand,
		removedbCommand,
		dumpCommand,
		dumpGenesisCommand,
		pruneHistoryCommand,
		downloadEraCommand,
		// See accountcmd.go:
		accountCommand,
		walletCommand,
		// See consolecmd.go:
		consoleCommand,
		attachCommand,
		javascriptCommand,
		// See misccmd.go:
		versionCommand,
		licenseCommand,
		// See config.go
		dumpConfigCommand,
		// see dbcmd.go
		dbCommand,
		// See cmd/utils/flags_legacy.go
		utils.ShowDeprecated,
		// See snapshot.go
		snapshotCommand,
	}
	if logTestCommand != nil {
		app.Commands = append(app.Commands, logTestCommand)
	}
	sort.Sort(cli.CommandsByName(app.Commands))

	app.Flags = slices.Concat(
		nodeFlags,
		rpcFlags,
		consoleFlags,
		debug.Flags,
		metricsFlags,
	)
	// CHANGE(taiko): append Taiko flags into the original GETH flags
	app.Flags = append(app.Flags, &utils.TaikoFlag)
	app.Flags = append(app.Flags, &utils.TaikoDevnetUnzenTimeFlag)

	flags.AutoEnvVars(app.Flags, "GETH")

	app.Before = func(ctx *cli.Context) error {
		maxprocs.Set() // Automatically set GOMAXPROCS to match Linux container CPU quota.
		flags.MigrateGlobalFlags(ctx)
		if err := debug.Setup(ctx); err != nil {
			return err
		}
		flags.CheckEnvVars(ctx, app.Flags, "GETH")
		return nil
	}
	app.After = func(ctx *cli.Context) error {
		debug.Exit()
		prompt.Stdin.Close() // Resets terminal mode.
		return nil
	}
}

func main() {
	if err := app.Run(os.Args); err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}

// prepare manipulates memory cache allowance and setups metric system.
// This function should be called before launching devp2p stack.
func prepare(ctx *cli.Context) {
	// If we're running a known preset, log it for convenience.
	switch {
	case ctx.IsSet(utils.SepoliaFlag.Name):
		log.Info("Starting Geth on Sepolia testnet...")

	case ctx.IsSet(utils.HoleskyFlag.Name):
		log.Info("Starting Geth on Holesky testnet...")

	case ctx.IsSet(utils.HoodiFlag.Name):
		log.Info("Starting Geth on Hoodi testnet...")

	case !ctx.IsSet(utils.NetworkIdFlag.Name):
		log.Info("Starting Geth on Ethereum mainnet...")
	}
}

// geth is the main entry point into the system if no special subcommand is run.
// It creates a default node based on the command line arguments and runs it in
// blocking mode, waiting for it to be shut down.
func geth(ctx *cli.Context) error {
	if args := ctx.Args().Slice(); len(args) > 0 {
		return fmt.Errorf("invalid command: %q", args[0])
	}

	prepare(ctx)
	stack := makeFullNode(ctx)
	defer stack.Close()

	startNode(ctx, stack, false)
	stack.Wait()
	return nil
}

// startNode boots up the system node and all registered protocols, after which
// it starts the RPC/IPC interfaces and the miner.
func startNode(ctx *cli.Context, stack *node.Node, isConsole bool) {
	// Start up the node itself
	utils.StartNode(ctx, stack, isConsole)

	if ctx.IsSet(utils.UnlockedAccountFlag.Name) {
		log.Warn(`The "unlock" flag has been deprecated and has no effect`)
	}

	// Register wallet event handlers to open and auto-derive wallets
	events := make(chan accounts.WalletEvent, 16)
	stack.AccountManager().Subscribe(events)

	// Create a client to interact with local geth node.
	rpcClient := stack.Attach()
	ethClient := ethclient.NewClient(rpcClient)

	go func() {
		// Open any wallets already attached
		for _, wallet := range stack.AccountManager().Wallets() {
			if err := wallet.Open(""); err != nil {
				log.Warn("Failed to open wallet", "url", wallet.URL(), "err", err)
			}
		}
		// Listen for wallet event till termination
		for event := range events {
			switch event.Kind {
			case accounts.WalletArrived:
				if err := event.Wallet.Open(""); err != nil {
					log.Warn("New wallet appeared, failed to open", "url", event.Wallet.URL(), "err", err)
				}
			case accounts.WalletOpened:
				status, _ := event.Wallet.Status()
				log.Info("New wallet appeared", "url", event.Wallet.URL(), "status", status)

				var derivationPaths []accounts.DerivationPath
				if event.Wallet.URL().Scheme == "ledger" {
					derivationPaths = append(derivationPaths, accounts.LegacyLedgerBaseDerivationPath)
				}
				derivationPaths = append(derivationPaths, accounts.DefaultBaseDerivationPath)

				event.Wallet.SelfDerive(derivationPaths, ethClient)

			case accounts.WalletDropped:
				log.Info("Old wallet dropped", "url", event.Wallet.URL())
				event.Wallet.Close()
			}
		}
	}()

	// Spawn a standalone goroutine for status synchronization monitoring,
	// close the node when synchronization is complete if user required.
	if ctx.Bool(utils.ExitWhenSyncedFlag.Name) {
		go func() {
			sub := stack.EventMux().Subscribe(downloader.DoneEvent{})
			defer sub.Unsubscribe()
			for {
				event := <-sub.Chan()
				if event == nil {
					continue
				}
				done, ok := event.Data.(downloader.DoneEvent)
				if !ok {
					continue
				}
				if timestamp := time.Unix(int64(done.Latest.Time), 0); time.Since(timestamp) < 10*time.Minute {
					log.Info("Synchronisation completed", "latestnum", done.Latest.Number, "latesthash", done.Latest.Hash(),
						"age", common.PrettyAge(timestamp))
					stack.Close()
				}
			}
		}()
	}
}
