package clitest

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"github.com/stretchr/testify/require"

	cmn "github.com/tendermint/tendermint/libs/common"

	"github.com/cosmos/cosmos-sdk/client/keys"
	"github.com/cosmos/cosmos-sdk/client/tx"
	"github.com/cosmos/cosmos-sdk/cmd/gaia/app"
	"github.com/cosmos/cosmos-sdk/codec"
	"github.com/cosmos/cosmos-sdk/server"
	"github.com/cosmos/cosmos-sdk/tests"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/x/auth"
	"github.com/cosmos/cosmos-sdk/x/gov"
	"github.com/cosmos/cosmos-sdk/x/slashing"
	"github.com/cosmos/cosmos-sdk/x/staking"
)

const (
	denom        = "stake"
	keyFoo       = "foo"
	keyBar       = "bar"
	fooDenom     = "footoken"
	feeDenom     = "feetoken"
	fee2Denom    = "fee2token"
	keyBaz       = "baz"
	keyFooBarBaz = "foobarbaz"
)

var startCoins = sdk.Coins{
	sdk.NewInt64Coin(feeDenom, 1000000),
	sdk.NewInt64Coin(fee2Denom, 1000000),
	sdk.NewInt64Coin(fooDenom, 1000),
	sdk.NewInt64Coin(denom, 150),
}

//___________________________________________________________________________________
// Fixtures

// Fixtures is used to setup the testing environment
type Fixtures struct {
	ChainID  string
	RPCAddr  string
	Port     string
	GDHome   string
	GCLIHome string
	P2PAddr  string
	T        *testing.T
}

// NewFixtures creates a new instance of Fixtures with many vars set
func NewFixtures(t *testing.T) *Fixtures {
	tmpDir, err := ioutil.TempDir("", "gaia_integration_"+t.Name()+"_")
	require.NoError(t, err)
	servAddr, port, err := server.FreeTCPAddr()
	require.NoError(t, err)
	p2pAddr, _, err := server.FreeTCPAddr()
	require.NoError(t, err)
	return &Fixtures{
		T:        t,
		GDHome:   filepath.Join(tmpDir, ".gaiad"),
		GCLIHome: filepath.Join(tmpDir, ".gaiacli"),
		RPCAddr:  servAddr,
		P2PAddr:  p2pAddr,
		Port:     port,
	}
}

// InitFixtures is called at the beginning of a test
// and initializes a chain with 1 validator
func InitFixtures(t *testing.T) (f *Fixtures) {
	f = NewFixtures(t)

	// Reset test state
	f.UnsafeResetAll()

	// Ensure keystore has foo and bar keys
	f.KeysDelete(keyFoo)
	f.KeysDelete(keyBar)
	f.KeysDelete(keyBar)
	f.KeysDelete(keyFooBarBaz)
	f.KeysAdd(keyFoo)
	f.KeysAdd(keyBar)
	f.KeysAdd(keyBaz)
	f.KeysAdd(keyFooBarBaz, "--multisig-threshold=2", fmt.Sprintf(
		"--multisig=%s,%s,%s", keyFoo, keyBar, keyBaz))

	// Ensure that CLI output is in JSON format
	f.CLIConfig("output", "json")

	// NOTE: GDInit sets the ChainID
	f.GDInit(keyFoo)
	f.CLIConfig("chain-id", f.ChainID)

	// Start an account with tokens
	f.AddGenesisAccount(f.KeyAddress(keyFoo), startCoins)
	f.GenTx(keyFoo)
	f.CollectGenTxs()
	return
}

// Cleanup is meant to be run at the end of a test to clean up an remaining test state
func (f *Fixtures) Cleanup(dirs ...string) {
	clean := append(dirs, f.GDHome, f.GCLIHome)
	for _, d := range clean {
		err := os.RemoveAll(d)
		require.NoError(f.T, err)
	}
}

// Flags returns the flags necessary for making most CLI calls
func (f *Fixtures) Flags() string {
	return fmt.Sprintf("--home=%s --node=%s", f.GCLIHome, f.RPCAddr)
}

//___________________________________________________________________________________
// gaiad

// UnsafeResetAll is gaiad unsafe-reset-all
func (f *Fixtures) UnsafeResetAll(flags ...string) {
	cmd := fmt.Sprintf("gaiad --home=%s unsafe-reset-all", f.GDHome)
	executeWrite(f.T, addFlags(cmd, flags))
	err := os.RemoveAll(filepath.Join(f.GDHome, "config", "gentx"))
	require.NoError(f.T, err)
}

// GDInit is gaiad init
// NOTE: GDInit sets the ChainID for the Fixtures instance
func (f *Fixtures) GDInit(moniker string, flags ...string) {
	cmd := fmt.Sprintf("gaiad init -o --moniker=%s --home=%s", moniker, f.GDHome)
	_, stderr := tests.ExecuteT(f.T, addFlags(cmd, flags), app.DefaultKeyPass)

	var chainID string
	var initRes map[string]json.RawMessage

	err := json.Unmarshal([]byte(stderr), &initRes)
	require.NoError(f.T, err)

	err = json.Unmarshal(initRes["chain_id"], &chainID)
	require.NoError(f.T, err)

	f.ChainID = chainID
}

// AddGenesisAccount is gaiad add-genesis-account
func (f *Fixtures) AddGenesisAccount(address sdk.AccAddress, coins sdk.Coins, flags ...string) {
	cmd := fmt.Sprintf("gaiad add-genesis-account %s %s --home=%s", address, coins, f.GDHome)
	executeWriteCheckErr(f.T, addFlags(cmd, flags))
}

// GenTx is gaiad gentx
func (f *Fixtures) GenTx(name string, flags ...string) {
	cmd := fmt.Sprintf("gaiad gentx --name=%s --home=%s --home-client=%s", name, f.GDHome, f.GCLIHome)
	executeWriteCheckErr(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

// CollectGenTxs is gaiad collect-gentxs
func (f *Fixtures) CollectGenTxs(flags ...string) {
	cmd := fmt.Sprintf("gaiad collect-gentxs --home=%s", f.GDHome)
	executeWriteCheckErr(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

// GDStart runs gaiad start with the appropriate flags and returns a process
func (f *Fixtures) GDStart(flags ...string) *tests.Process {
	cmd := fmt.Sprintf("gaiad start --home=%s --rpc.laddr=%v --p2p.laddr=%v", f.GDHome, f.RPCAddr, f.P2PAddr)
	proc := tests.GoExecuteTWithStdout(f.T, addFlags(cmd, flags))
	tests.WaitForTMStart(f.Port)
	tests.WaitForNextNBlocksTM(1, f.Port)
	return proc
}

//___________________________________________________________________________________
// gaiacli keys

// KeysDelete is gaiacli keys delete
func (f *Fixtures) KeysDelete(name string, flags ...string) {
	cmd := fmt.Sprintf("gaiacli keys delete --home=%s %s", f.GCLIHome, name)
	executeWrite(f.T, addFlags(cmd, append(append(flags, "-y"), "-f")))
}

// KeysAdd is gaiacli keys add
func (f *Fixtures) KeysAdd(name string, flags ...string) {
	cmd := fmt.Sprintf("gaiacli keys add --home=%s %s", f.GCLIHome, name)
	executeWriteCheckErr(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

// KeysShow is gaiacli keys show
func (f *Fixtures) KeysShow(name string, flags ...string) keys.KeyOutput {
	cmd := fmt.Sprintf("gaiacli keys show --home=%s %s", f.GCLIHome, name)
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var ko keys.KeyOutput
	err := keys.UnmarshalJSON([]byte(out), &ko)
	require.NoError(f.T, err)
	return ko
}

// KeyAddress returns the SDK account address from the key
func (f *Fixtures) KeyAddress(name string) sdk.AccAddress {
	ko := f.KeysShow(name)
	accAddr, err := sdk.AccAddressFromBech32(ko.Address)
	require.NoError(f.T, err)
	return accAddr
}

//___________________________________________________________________________________
// gaiacli config

// CLIConfig is gaiacli config
func (f *Fixtures) CLIConfig(key, value string, flags ...string) {
	cmd := fmt.Sprintf("gaiacli config --home=%s %s %s", f.GCLIHome, key, value)
	executeWriteCheckErr(f.T, addFlags(cmd, flags))
}

//___________________________________________________________________________________
// gaiacli tx send/sign/broadcast

// TxSend is gaiacli tx send
func (f *Fixtures) TxSend(from string, to sdk.AccAddress, amount sdk.Coin, flags ...string) (bool, string, string) {
	cmd := fmt.Sprintf("gaiacli tx send %v --amount=%s --to=%s --from=%s", f.Flags(), amount, to, from)
	return executeWriteRetStdStreams(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

// TxSign is gaiacli tx sign
func (f *Fixtures) TxSign(signer, fileName string, flags ...string) (bool, string, string) {
	cmd := fmt.Sprintf("gaiacli tx sign %v --name=%s %v", f.Flags(), signer, fileName)
	return executeWriteRetStdStreams(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

// TxBroadcast is gaiacli tx sign
func (f *Fixtures) TxBroadcast(fileName string, flags ...string) (bool, string, string) {
	cmd := fmt.Sprintf("gaiacli tx broadcast %v --json %v", f.Flags(), fileName)
	return executeWriteRetStdStreams(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

// TxMultisign is gaiacli tx multisign
func (f *Fixtures) TxMultisign(fileName, name string, signaturesFiles []string,
	flags ...string) (bool, string, string) {

	cmd := fmt.Sprintf("gaiacli tx multisign %v %s %s %s", f.Flags(),
		fileName, name, strings.Join(signaturesFiles, " "),
	)
	return executeWriteRetStdStreams(f.T, cmd)
}

//___________________________________________________________________________________
// gaiacli tx staking

// TxStakingCreateValidator is gaiacli tx staking create-validator
func (f *Fixtures) TxStakingCreateValidator(from, consPubKey string, amount sdk.Coin, flags ...string) (bool, string, string) {
	cmd := fmt.Sprintf("gaiacli tx staking create-validator %v --from=%s --pubkey=%s", f.Flags(), from, consPubKey)
	cmd += fmt.Sprintf(" --amount=%v --moniker=%v --commission-rate=%v", amount, from, "0.05")
	cmd += fmt.Sprintf(" --commission-max-rate=%v --commission-max-change-rate=%v", "0.20", "0.10")
	return executeWriteRetStdStreams(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

// TxStakingUnbond is gaiacli tx staking unbond
func (f *Fixtures) TxStakingUnbond(from, shares string, validator sdk.ValAddress, flags ...string) bool {
	cmd := fmt.Sprintf("gaiacli tx staking unbond %v --from=%s --validator=%s --shares-amount=%v", f.Flags(), from, validator, shares)
	return executeWrite(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

//___________________________________________________________________________________
// gaiacli tx gov

// TxGovSubmitProposal is gaiacli tx gov submit-proposal
func (f *Fixtures) TxGovSubmitProposal(from, typ, title, description string, deposit sdk.Coin, flags ...string) (bool, string, string) {
	cmd := fmt.Sprintf("gaiacli tx gov submit-proposal %v --from=%s --type=%s", f.Flags(), from, typ)
	cmd += fmt.Sprintf(" --title=%s --description=%s --deposit=%s", title, description, deposit)
	return executeWriteRetStdStreams(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

// TxGovDeposit is gaiacli tx gov deposit
func (f *Fixtures) TxGovDeposit(proposalID int, from string, amount sdk.Coin, flags ...string) (bool, string, string) {
	cmd := fmt.Sprintf("gaiacli tx gov deposit %d %s --from=%s %v", proposalID, amount, from, f.Flags())
	return executeWriteRetStdStreams(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

// TxGovVote is gaiacli tx gov vote
func (f *Fixtures) TxGovVote(proposalID int, option gov.VoteOption, from string, flags ...string) (bool, string, string) {
	cmd := fmt.Sprintf("gaiacli tx gov vote %d %s --from=%s %v", proposalID, option, from, f.Flags())
	return executeWriteRetStdStreams(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
}

//___________________________________________________________________________________
// gaiacli query account

// QueryAccount is gaiacli query account
func (f *Fixtures) QueryAccount(address sdk.AccAddress, flags ...string) auth.BaseAccount {
	cmd := fmt.Sprintf("gaiacli query account %s %v", address, f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var initRes map[string]json.RawMessage
	err := json.Unmarshal([]byte(out), &initRes)
	require.NoError(f.T, err, "out %v, err %v", out, err)
	value := initRes["value"]
	var acc auth.BaseAccount
	cdc := codec.New()
	codec.RegisterCrypto(cdc)
	err = cdc.UnmarshalJSON(value, &acc)
	require.NoError(f.T, err, "value %v, err %v", string(value), err)
	return acc
}

//___________________________________________________________________________________
// gaiacli query txs

// QueryTxs is gaiacli query txs
func (f *Fixtures) QueryTxs(page, limit int, tags ...string) []tx.Info {
	cmd := fmt.Sprintf("gaiacli query txs --page=%d --limit=%d --tags='%s' %v", page, limit, queryTags(tags), f.Flags())
	out, _ := tests.ExecuteT(f.T, cmd, "")
	var txs []tx.Info
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &txs)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return txs
}

// QueryTxsInvalid query txs with wrong parameters and compare expected error
func (f *Fixtures) QueryTxsInvalid(expectedErr error, page, limit int, tags ...string) {
	cmd := fmt.Sprintf("gaiacli query txs --page=%d --limit=%d --tags='%s' %v", page, limit, queryTags(tags), f.Flags())
	_, err := tests.ExecuteT(f.T, cmd, "")
	require.EqualError(f.T, expectedErr, err)
}

//___________________________________________________________________________________
// gaiacli query staking

// QueryStakingValidator is gaiacli query staking validator
func (f *Fixtures) QueryStakingValidator(valAddr sdk.ValAddress, flags ...string) staking.Validator {
	cmd := fmt.Sprintf("gaiacli query staking validator %s %v", valAddr, f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var validator staking.Validator
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &validator)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return validator
}

// QueryStakingUnbondingDelegationsFrom is gaiacli query staking unbonding-delegations-from
func (f *Fixtures) QueryStakingUnbondingDelegationsFrom(valAddr sdk.ValAddress, flags ...string) []staking.UnbondingDelegation {
	cmd := fmt.Sprintf("gaiacli query staking unbonding-delegations-from %s %v", valAddr, f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var ubds []staking.UnbondingDelegation
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &ubds)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return ubds
}

// QueryStakingDelegationsTo is gaiacli query staking delegations-to
func (f *Fixtures) QueryStakingDelegationsTo(valAddr sdk.ValAddress, flags ...string) []staking.Delegation {
	cmd := fmt.Sprintf("gaiacli query staking delegations-to %s %v", valAddr, f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var delegations []staking.Delegation
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &delegations)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return delegations
}

// QueryStakingPool is gaiacli query staking pool
func (f *Fixtures) QueryStakingPool(flags ...string) staking.Pool {
	cmd := fmt.Sprintf("gaiacli query staking pool %v", f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var pool staking.Pool
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &pool)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return pool
}

// QueryStakingParameters is gaiacli query staking parameters
func (f *Fixtures) QueryStakingParameters(flags ...string) staking.Params {
	cmd := fmt.Sprintf("gaiacli query staking params %v", f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var params staking.Params
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &params)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return params
}

//___________________________________________________________________________________
// gaiacli query gov

// QueryGovParamDeposit is gaiacli query gov param deposit
func (f *Fixtures) QueryGovParamDeposit() gov.DepositParams {
	cmd := fmt.Sprintf("gaiacli query gov param deposit %s", f.Flags())
	out, _ := tests.ExecuteT(f.T, cmd, "")
	var depositParam gov.DepositParams
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &depositParam)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return depositParam
}

// QueryGovParamVoting is gaiacli query gov param voting
func (f *Fixtures) QueryGovParamVoting() gov.VotingParams {
	cmd := fmt.Sprintf("gaiacli query gov param voting %s", f.Flags())
	out, _ := tests.ExecuteT(f.T, cmd, "")
	var votingParam gov.VotingParams
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &votingParam)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return votingParam
}

// QueryGovParamTallying is gaiacli query gov param tallying
func (f *Fixtures) QueryGovParamTallying() gov.TallyParams {
	cmd := fmt.Sprintf("gaiacli query gov param tallying %s", f.Flags())
	out, _ := tests.ExecuteT(f.T, cmd, "")
	var tallyingParam gov.TallyParams
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &tallyingParam)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return tallyingParam
}

// QueryGovProposals is gaiacli query gov proposals
func (f *Fixtures) QueryGovProposals(flags ...string) gov.Proposals {
	cmd := fmt.Sprintf("gaiacli query gov proposals %v", f.Flags())
	stdout, stderr := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	if strings.Contains(stderr, "No matching proposals found") {
		return gov.Proposals{}
	}
	require.Empty(f.T, stderr)
	var out gov.Proposals
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(stdout), &out)
	require.NoError(f.T, err)
	return out
}

// QueryGovProposal is gaiacli query gov proposal
func (f *Fixtures) QueryGovProposal(proposalID int, flags ...string) gov.Proposal {
	cmd := fmt.Sprintf("gaiacli query gov proposal %d %v", proposalID, f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var proposal gov.Proposal
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &proposal)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return proposal
}

// QueryGovVote is gaiacli query gov vote
func (f *Fixtures) QueryGovVote(proposalID int, voter sdk.AccAddress, flags ...string) gov.Vote {
	cmd := fmt.Sprintf("gaiacli query gov vote %d %s %v", proposalID, voter, f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var vote gov.Vote
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &vote)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return vote
}

// QueryGovVotes is gaiacli query gov votes
func (f *Fixtures) QueryGovVotes(proposalID int, flags ...string) []gov.Vote {
	cmd := fmt.Sprintf("gaiacli query gov votes %d %v", proposalID, f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var votes []gov.Vote
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &votes)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return votes
}

// QueryGovDeposit is gaiacli query gov deposit
func (f *Fixtures) QueryGovDeposit(proposalID int, depositor sdk.AccAddress, flags ...string) gov.Deposit {
	cmd := fmt.Sprintf("gaiacli query gov deposit %d %s %v", proposalID, depositor, f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var deposit gov.Deposit
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &deposit)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return deposit
}

// QueryGovDeposits is gaiacli query gov deposits
func (f *Fixtures) QueryGovDeposits(propsalID int, flags ...string) []gov.Deposit {
	cmd := fmt.Sprintf("gaiacli query gov deposits %d %v", propsalID, f.Flags())
	out, _ := tests.ExecuteT(f.T, addFlags(cmd, flags), "")
	var deposits []gov.Deposit
	cdc := app.MakeCodec()
	err := cdc.UnmarshalJSON([]byte(out), &deposits)
	require.NoError(f.T, err, "out %v\n, err %v", out, err)
	return deposits
}

//___________________________________________________________________________________
// query slashing

// QuerySlashingParams is gaiacli query slashing params
func (f *Fixtures) QuerySlashingParams() slashing.Params {
	cmd := fmt.Sprintf("gaiacli query slashing params %s", f.Flags())
	res, errStr := tests.ExecuteT(f.T, cmd, "")
	require.Empty(f.T, errStr)
	cdc := app.MakeCodec()
	var params slashing.Params
	err := cdc.UnmarshalJSON([]byte(res), &params)
	require.NoError(f.T, err)
	return params
}

//___________________________________________________________________________________
// executors

func executeWriteCheckErr(t *testing.T, cmdStr string, writes ...string) {
	require.True(t, executeWrite(t, cmdStr, writes...))
}

func executeWrite(t *testing.T, cmdStr string, writes ...string) (exitSuccess bool) {
	exitSuccess, _, _ = executeWriteRetStdStreams(t, cmdStr, writes...)
	return
}

func executeWriteRetStdStreams(t *testing.T, cmdStr string, writes ...string) (bool, string, string) {
	proc := tests.GoExecuteT(t, cmdStr)

	// Enables use of interactive commands
	for _, write := range writes {
		_, err := proc.StdinPipe.Write([]byte(write + "\n"))
		require.NoError(t, err)
	}

	// Read both stdout and stderr from the process
	stdout, stderr, err := proc.ReadAll()
	if err != nil {
		fmt.Println("Err on proc.ReadAll()", err, cmdStr)
	}

	// Log output.
	if len(stdout) > 0 {
		t.Log("Stdout:", cmn.Green(string(stdout)))
	}
	if len(stderr) > 0 {
		t.Log("Stderr:", cmn.Red(string(stderr)))
	}

	// Wait for process to exit
	proc.Wait()

	// Return succes, stdout, stderr
	return proc.ExitState.Success(), string(stdout), string(stderr)
}

//___________________________________________________________________________________
// utils

func addFlags(cmd string, flags []string) string {
	for _, f := range flags {
		cmd += " " + f
	}
	return strings.TrimSpace(cmd)
}

func queryTags(tags []string) (out string) {
	for _, tag := range tags {
		out += tag + "&"
	}
	return strings.TrimSuffix(out, "&")
}

func writeToNewTempFile(t *testing.T, s string) *os.File {
	fp, err := ioutil.TempFile(os.TempDir(), "cosmos_cli_test_")
	require.Nil(t, err)
	_, err = fp.WriteString(s)
	require.Nil(t, err)
	return fp
}

func marshalStdTx(t *testing.T, stdTx auth.StdTx) []byte {
	cdc := app.MakeCodec()
	bz, err := cdc.MarshalBinaryBare(stdTx)
	require.NoError(t, err)
	return bz
}

func unmarshalStdTx(t *testing.T, s string) (stdTx auth.StdTx) {
	cdc := app.MakeCodec()
	require.Nil(t, cdc.UnmarshalJSON([]byte(s), &stdTx))
	return
}