package cmd

import (
	"errors"
	"io"

	dbm "github.com/cosmos/cosmos-db"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"

	"cosmossdk.io/client/v2/offchain"
	"cosmossdk.io/log"
	"cosmossdk.io/simapp"
	confixcmd "cosmossdk.io/tools/confix/cmd"
	authcmd "cosmossdk.io/x/auth/client/cli"

	"github.com/cosmos/cosmos-sdk/client"
	"github.com/cosmos/cosmos-sdk/client/debug"
	"github.com/cosmos/cosmos-sdk/client/keys"
	"github.com/cosmos/cosmos-sdk/client/pruning"
	"github.com/cosmos/cosmos-sdk/client/rpc"
	"github.com/cosmos/cosmos-sdk/client/snapshot"
	"github.com/cosmos/cosmos-sdk/server"
	servertypes "github.com/cosmos/cosmos-sdk/server/types"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/types/module"
	"github.com/cosmos/cosmos-sdk/x/genutil"
	genutilcli "github.com/cosmos/cosmos-sdk/x/genutil/client/cli"
	genutiltypes "github.com/cosmos/cosmos-sdk/x/genutil/types"
)

func initRootCmd(
	rootCmd *cobra.Command,
	moduleManager *module.Manager,
) {
	cfg := sdk.GetConfig()
	cfg.Seal()

	rootCmd.AddCommand(
		genutilcli.InitCmd(moduleManager),
		NewTestnetCmd(moduleManager),
		debug.Cmd(),
		confixcmd.ConfigCommand(),
		pruning.Cmd(newApp),
		snapshot.Cmd(newApp),
	)

	server.AddCommands(rootCmd, newApp, server.StartCmdOptions[servertypes.Application]{})

	// add keybase, auxiliary RPC, query, genesis, and tx child commands
	rootCmd.AddCommand(
		server.StatusCommand(),
		genesisCommand(moduleManager, appExport),
		queryCommand(),
		txCommand(),
		keys.Commands(),
		offchain.OffChain(),
	)
}

// genesisCommand builds genesis-related `simd genesis` command. Users may provide application specific commands as a parameter
func genesisCommand(moduleManager *module.Manager, appExport servertypes.AppExporter, cmds ...*cobra.Command) *cobra.Command {
	cmd := genutilcli.Commands(moduleManager.Modules[genutiltypes.ModuleName].(genutil.AppModule), moduleManager, appExport)
	for _, subCmd := range cmds {
		cmd.AddCommand(subCmd)
	}
	return cmd
}

func queryCommand() *cobra.Command {
	cmd := &cobra.Command{
		Use:                        "query",
		Aliases:                    []string{"q"},
		Short:                      "Querying subcommands",
		DisableFlagParsing:         false,
		SuggestionsMinimumDistance: 2,
		RunE:                       client.ValidateCmd,
	}

	cmd.AddCommand(
		rpc.WaitTxCmd(),
		server.QueryBlockCmd(),
		authcmd.QueryTxsByEventsCmd(),
		server.QueryBlocksCmd(),
		authcmd.QueryTxCmd(),
		server.QueryBlockResultsCmd(),
	)

	return cmd
}

func txCommand() *cobra.Command {
	cmd := &cobra.Command{
		Use:                        "tx",
		Short:                      "Transactions subcommands",
		DisableFlagParsing:         false,
		SuggestionsMinimumDistance: 2,
		RunE:                       client.ValidateCmd,
	}

	cmd.AddCommand(
		authcmd.GetSignCommand(),
		authcmd.GetSignBatchCommand(),
		authcmd.GetMultiSignCommand(),
		authcmd.GetMultiSignBatchCmd(),
		authcmd.GetValidateSignaturesCommand(),
		authcmd.GetBroadcastCommand(),
		authcmd.GetEncodeCommand(),
		authcmd.GetDecodeCommand(),
		authcmd.GetSimulateCmd(),
	)

	return cmd
}

// newApp creates the application
func newApp(
	logger log.Logger,
	db dbm.DB,
	traceStore io.Writer,
	appOpts servertypes.AppOptions,
) servertypes.Application {
	baseappOptions := server.DefaultBaseappOptions(appOpts)
	return simapp.NewSimApp(
		logger, db, traceStore, true,
		appOpts,
		baseappOptions...,
	)
}

// appExport creates a new simapp (optionally at a given height) and exports state.
func appExport(
	logger log.Logger,
	db dbm.DB,
	traceStore io.Writer,
	height int64,
	forZeroHeight bool,
	jailAllowedAddrs []string,
	appOpts servertypes.AppOptions,
	modulesToExport []string,
) (servertypes.ExportedApp, error) {
	viperAppOpts, ok := appOpts.(*viper.Viper)
	if !ok {
		return servertypes.ExportedApp{}, errors.New("appOpts is not viper.Viper")
	}

	// overwrite the FlagInvCheckPeriod
	viperAppOpts.Set(server.FlagInvCheckPeriod, 1)
	appOpts = viperAppOpts

	var simApp *simapp.SimApp
	if height != -1 {
		simApp = simapp.NewSimApp(logger, db, traceStore, false, appOpts)

		if err := simApp.LoadHeight(height); err != nil {
			return servertypes.ExportedApp{}, err
		}
	} else {
		simApp = simapp.NewSimApp(logger, db, traceStore, true, appOpts)
	}

	return simApp.ExportAppStateAndValidators(forZeroHeight, jailAllowedAddrs, modulesToExport)
}