planetmint-go/cmd/planetmint-god/cmd/genaccounts.go

package cmd

import (
	"bufio"
	"encoding/json"
	"errors"
	"fmt"

	"github.com/cosmos/cosmos-sdk/client"
	"github.com/cosmos/cosmos-sdk/client/flags"
	"github.com/cosmos/cosmos-sdk/codec"
	"github.com/cosmos/cosmos-sdk/crypto/keyring"
	"github.com/cosmos/cosmos-sdk/server"
	sdk "github.com/cosmos/cosmos-sdk/types"
	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
	authvesting "github.com/cosmos/cosmos-sdk/x/auth/vesting/types"
	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
	"github.com/cosmos/cosmos-sdk/x/genutil"
	genutiltypes "github.com/cosmos/cosmos-sdk/x/genutil/types"
	"github.com/spf13/cobra"
)

const (
	flagVestingStart = "vesting-start-time"
	flagVestingEnd   = "vesting-end-time"
	flagVestingAmt   = "vesting-amount"
)

// AddGenesisAccountCmd returns add-genesis-account cobra Command.
func AddGenesisAccountCmd(defaultNodeHome string) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "add-genesis-account [address_or_key_name] [coin][,[coin]]",
		Short: "Add a genesis account to genesis.json",
		Long: `Add a genesis account to genesis.json. The provided account must specify
the account address or key name and a list of initial coins. If a key name is given,
the address will be looked up in the local Keybase. The list of initial tokens must
contain valid denominations. Accounts may optionally be supplied with vesting parameters.
`,
		Args: cobra.ExactArgs(2),
		RunE: addGenesisAccountCmdFunc,
	}

	cmd.Flags().String(flags.FlagKeyringBackend, flags.DefaultKeyringBackend, "Select keyring's backend (os|file|kwallet|pass|test)")
	cmd.Flags().String(flags.FlagHome, defaultNodeHome, "The application home directory")
	cmd.Flags().String(flagVestingAmt, "", "amount of coins for vesting accounts")
	cmd.Flags().Int64(flagVestingStart, 0, "schedule start time (unix epoch) for vesting accounts")
	cmd.Flags().Int64(flagVestingEnd, 0, "schedule end time (unix epoch) for vesting accounts")
	flags.AddQueryFlagsToCmd(cmd)

	return cmd
}

func addGenesisAccountCmdFunc(cmd *cobra.Command, args []string) error {
	clientCtx := client.GetClientContextFromCmd(cmd)
	cdc := clientCtx.Codec

	serverCtx := server.GetServerContextFromCmd(cmd)
	config := serverCtx.Config

	config.SetRoot(clientCtx.HomeDir)

	coins, err := sdk.ParseCoinsNormalized(args[1])
	if err != nil {
		return fmt.Errorf("failed to parse coins: %w", err)
	}

	addr, err := sdk.AccAddressFromBech32(args[0])
	if err != nil {
		addr, err = resolveAddressFromKeybase(cmd, args[0], clientCtx.HomeDir, cdc)
		if err != nil {
			return err
		}
	}

	vestingStart, err := cmd.Flags().GetInt64(flagVestingStart)
	if err != nil {
		return err
	}
	vestingEnd, err := cmd.Flags().GetInt64(flagVestingEnd)
	if err != nil {
		return err
	}
	vestingAmtStr, err := cmd.Flags().GetString(flagVestingAmt)
	if err != nil {
		return err
	}

	vestingAmt, err := sdk.ParseCoinsNormalized(vestingAmtStr)
	if err != nil {
		return fmt.Errorf("failed to parse vesting amount: %w", err)
	}

	genAccount, err := createGenesisAccount(addr, coins, vestingAmt, vestingStart, vestingEnd)
	if err != nil {
		return err
	}

	genFile := config.GenesisFile()
	appState, genDoc, err := genutiltypes.GenesisStateFromGenFile(genFile)
	if err != nil {
		return fmt.Errorf("failed to unmarshal genesis state: %w", err)
	}

	if err := updateAuthGenesisState(cdc, appState, addr, genAccount); err != nil {
		return err
	}

	if err := updateBankGenesisState(cdc, appState, addr, coins); err != nil {
		return err
	}

	appStateJSON, err := json.Marshal(appState)
	if err != nil {
		return fmt.Errorf("failed to marshal application genesis state: %w", err)
	}

	genDoc.AppState = appStateJSON
	return genutil.ExportGenesisFile(genDoc, genFile)
}

func resolveAddressFromKeybase(cmd *cobra.Command, keyName string, homeDir string, cdc codec.Codec) (sdk.AccAddress, error) {
	inBuf := bufio.NewReader(cmd.InOrStdin())
	keyringBackend, err := cmd.Flags().GetString(flags.FlagKeyringBackend)
	if err != nil {
		return nil, err
	}

	kb, err := keyring.New(sdk.KeyringServiceName(), keyringBackend, homeDir, inBuf, cdc)
	if err != nil {
		return nil, err
	}

	info, err := kb.Key(keyName)
	if err != nil {
		return nil, fmt.Errorf("failed to get address from Keybase: %w", err)
	}

	addr, err := info.GetAddress()
	if err != nil {
		return nil, fmt.Errorf("failed to get address from Keybase: %w", err)
	}

	return addr, nil
}

func createGenesisAccount(addr sdk.AccAddress, coins sdk.Coins, vestingAmt sdk.Coins, vestingStart, vestingEnd int64) (authtypes.GenesisAccount, error) {
	balances := banktypes.Balance{Address: addr.String(), Coins: coins.Sort()}
	baseAccount := authtypes.NewBaseAccount(addr, nil, 0, 0)

	if !vestingAmt.IsZero() {
		baseVestingAccount := authvesting.NewBaseVestingAccount(baseAccount, vestingAmt.Sort(), vestingEnd)

		if (balances.Coins.IsZero() && !baseVestingAccount.OriginalVesting.IsZero()) ||
			baseVestingAccount.OriginalVesting.IsAnyGT(balances.Coins) {
			return nil, errors.New("vesting amount cannot be greater than total amount")
		}

		switch {
		case vestingStart != 0 && vestingEnd != 0:
			return authvesting.NewContinuousVestingAccountRaw(baseVestingAccount, vestingStart), nil

		case vestingEnd != 0:
			return authvesting.NewDelayedVestingAccountRaw(baseVestingAccount), nil

		default:
			return nil, errors.New("invalid vesting parameters; must supply start and end time or end time")
		}
	}

	return baseAccount, nil
}

func updateAuthGenesisState(cdc codec.Codec, appState map[string]json.RawMessage, addr sdk.AccAddress, genAccount authtypes.GenesisAccount) error {
	authGenState := authtypes.GetGenesisStateFromAppState(cdc, appState)

	accs, err := authtypes.UnpackAccounts(authGenState.Accounts)
	if err != nil {
		return fmt.Errorf("failed to get accounts from any: %w", err)
	}

	if accs.Contains(addr) {
		return fmt.Errorf("cannot add account at existing address %s", addr)
	}

	// Add the new account to the set of genesis accounts and sanitize the
	// accounts afterwards.
	accs = append(accs, genAccount)
	accs = authtypes.SanitizeGenesisAccounts(accs)

	genAccs, err := authtypes.PackAccounts(accs)
	if err != nil {
		return fmt.Errorf("failed to convert accounts into any's: %w", err)
	}
	authGenState.Accounts = genAccs

	authGenStateBz, err := cdc.MarshalJSON(&authGenState)
	if err != nil {
		return fmt.Errorf("failed to marshal auth genesis state: %w", err)
	}

	appState[authtypes.ModuleName] = authGenStateBz

	return nil
}

func updateBankGenesisState(cdc codec.Codec, appState map[string]json.RawMessage, addr sdk.AccAddress, coins sdk.Coins) error {
	bankGenState := banktypes.GetGenesisStateFromAppState(cdc, appState)
	balances := banktypes.Balance{Address: addr.String(), Coins: coins.Sort()}
	bankGenState.Balances = append(bankGenState.Balances, balances)
	bankGenState.Balances = banktypes.SanitizeGenesisBalances(bankGenState.Balances)

	bankGenStateBz, err := cdc.MarshalJSON(bankGenState)
	if err != nil {
		return fmt.Errorf("failed to marshal bank genesis state: %w", err)
	}

	appState[banktypes.ModuleName] = bankGenStateBz

	return nil
}