package accounts

import (
	"fmt"

	"github.com/pkg/errors"
	"github.com/prysmaticlabs/prysm/validator/accounts/userprompt"
	"github.com/prysmaticlabs/prysm/validator/accounts/wallet"
	"github.com/prysmaticlabs/prysm/validator/keymanager"
	"github.com/prysmaticlabs/prysm/validator/keymanager/remote"
	"github.com/urfave/cli/v2"
)

// EditWalletConfigurationCli for a user's on-disk wallet, being able to change
// things such as remote gRPC credentials for remote signing, derivation paths
// for HD wallets, and more.
func EditWalletConfigurationCli(cliCtx *cli.Context) error {
	w, err := wallet.OpenWalletOrElseCli(cliCtx, func(cliCtx *cli.Context) (*wallet.Wallet, error) {
		return nil, wallet.ErrNoWalletFound
	})
	if err != nil {
		return errors.Wrap(err, "could not open wallet")
	}
	if w.KeymanagerKind() != keymanager.Remote {
		return errors.New(
			fmt.Sprintf("Keymanager type: %s doesn't support configuration editing",
				w.KeymanagerKind().String()))
	}
	return editRemoteWallet(cliCtx, w)
}

func editRemoteWallet(cliCtx *cli.Context, w *wallet.Wallet) error {
	enc, err := w.ReadKeymanagerConfigFromDisk(cliCtx.Context)
	if err != nil {
		return errors.Wrap(err, "could not read config")
	}
	opts, err := remote.UnmarshalOptionsFile(enc)
	if err != nil {
		return errors.Wrap(err, "could not unmarshal config")
	}
	log.Info("Current configuration")
	// Prints the current configuration to stdout.
	fmt.Println(opts)
	newCfg, err := userprompt.InputRemoteKeymanagerConfig(cliCtx)
	if err != nil {
		return errors.Wrap(err, "could not get keymanager config")
	}
	encodedCfg, err := remote.MarshalOptionsFile(cliCtx.Context, newCfg)
	if err != nil {
		return errors.Wrap(err, "could not marshal config file")
	}
	if err := w.WriteKeymanagerConfigToDisk(cliCtx.Context, encodedCfg); err != nil {
		return errors.Wrap(err, "could not write config to disk")
	}
	return nil
}