Migration031.go

package migrations

import (
	"encoding/json"
	"errors"
	"fmt"
	"io/ioutil"
	"os"
	"path"
)

const (
	am01EthereumRegistryAddressMainnet = "0x5c69ccf91eab4ef80d9929b3c1b4d5bc03eb0981"
	am01EthereumRegistryAddressRinkeby = "0x5cEF053c7b383f430FC4F4e1ea2F7D31d8e2D16C"
	am01EthereumRegistryAddressRopsten = "0x403d907982474cdd51687b09a8968346159378f3"
	am01UpVersion                      = 31
	am01DownVersion                    = 30
)

// am01 - required migration struct
type am01 struct{}

type Migration031 struct{ am01 }

// Up - upgrade the state
func (am01) Up(repoPath, dbPassword string, testnet bool) error {
	var (
		configMap        = map[string]interface{}{}
		configBytes, err = ioutil.ReadFile(path.Join(repoPath, "config"))
	)
	if err != nil {
		return fmt.Errorf("reading config: %s", err.Error())
	}

	if err = json.Unmarshal(configBytes, &configMap); err != nil {
		return fmt.Errorf("unmarshal config: %s", err.Error())
	}

	c, ok := configMap["Wallets"]
	if !ok {
		return errors.New("invalid config: missing key Wallets")
	}

	walletCfg, ok := c.(map[string]interface{})
	if !ok {
		return errors.New("invalid config: invalid key Wallets")
	}

	btc, ok := walletCfg["BTC"]
	if !ok {
		return errors.New("invalid config: missing BTC Wallet")
	}

	btcWalletCfg, ok := btc.(map[string]interface{})
	if !ok {
		return errors.New("invalid config: invalid BTC Wallet")
	}

	btcWalletCfg["APIPool"] = []string{"https://btc.api.openbazaar.org/api"}
	btcWalletCfg["APITestnetPool"] = []string{"https://tbtc.api.openbazaar.org/api"}

	eth, ok := walletCfg["ETH"]
	if !ok {
		return errors.New("invalid config: missing ETH Wallet")
	}

	if eth == nil {
		eth = map[string]interface{}{}
		walletCfg["ETH"] = eth
	}

	ethWalletCfg, ok := eth.(map[string]interface{})
	if !ok {
		return errors.New("invalid config: invalid ETH Wallet")
	}

	ethWalletCfg["Type"] = "API"
	ethWalletCfg["FeeAPI"] = ""
	ethWalletCfg["API"] = []string{"https://mainnet.infura.io"}
	ethWalletCfg["APIPool"] = []string{"https://mainnet.infura.io"}
	ethWalletCfg["APITestnetPool"] = []string{"https://rinkeby.infura.io"}
	ethWalletCfg["WalletOptions"] = map[string]interface{}{
		"RegistryAddress":        am01EthereumRegistryAddressMainnet,
		"RinkebyRegistryAddress": am01EthereumRegistryAddressRinkeby,
		"RopstenRegistryAddress": am01EthereumRegistryAddressRopsten,
	}
	ethWalletCfg["LowFeeDefault"] = 7
	ethWalletCfg["MediumFeeDefault"] = 15
	ethWalletCfg["HighFeeDefault"] = 30
	ethWalletCfg["MaxFee"] = 200

	newConfigBytes, err := json.MarshalIndent(configMap, "", "    ")
	if err != nil {
		return fmt.Errorf("marshal migrated config: %s", err.Error())
	}

	if err := ioutil.WriteFile(path.Join(repoPath, "config"), newConfigBytes, os.ModePerm); err != nil {
		return fmt.Errorf("writing migrated config: %s", err.Error())
	}

	if err := writeRepoVer(repoPath, am01UpVersion); err != nil {
		return fmt.Errorf("bumping repover to %d: %s", am01UpVersion, err.Error())
	}
	return nil
}

// Down - downgrade/restore the state
func (am01) Down(repoPath, dbPassword string, testnet bool) error {
	var (
		configMap        = map[string]interface{}{}
		configBytes, err = ioutil.ReadFile(path.Join(repoPath, "config"))
	)
	if err != nil {
		return fmt.Errorf("reading config: %s", err.Error())
	}

	if err = json.Unmarshal(configBytes, &configMap); err != nil {
		return fmt.Errorf("unmarshal config: %s", err.Error())
	}

	c, ok := configMap["Wallets"]
	if !ok {
		return errors.New("invalid config: missing key Wallets")
	}

	walletCfg, ok := c.(map[string]interface{})
	if !ok {
		return errors.New("invalid config: invalid key Wallets")
	}

	btc, ok := walletCfg["BTC"]
	if !ok {
		return errors.New("invalid config: missing BTC Wallet")
	}

	btcWalletCfg, ok := btc.(map[string]interface{})
	if !ok {
		return errors.New("invalid config: invalid BTC Wallet")
	}

	btcWalletCfg["APIPool"] = []string{"https://btc.blockbook.api.openbazaar.org/api"}
	btcWalletCfg["APITestnetPool"] = []string{"https://tbtc.blockbook.api.openbazaar.org/api"}

	eth, ok := walletCfg["ETH"]
	if !ok {
		return errors.New("invalid config: missing ETH Wallet")
	}

	ethWalletCfg, ok := eth.(map[string]interface{})
	if !ok {
		return errors.New("invalid config: invalid ETH Wallet")
	}

	ethWalletCfg["APIPool"] = []string{"https://mainnet.infura.io"}
	ethWalletCfg["APITestnetPool"] = []string{"https://rinkeby.infura.io"}
	ethWalletCfg["WalletOptions"] = map[string]interface{}{
		"RegistryAddress":        am01EthereumRegistryAddressMainnet,
		"RinkebyRegistryAddress": am01EthereumRegistryAddressRinkeby,
		"RopstenRegistryAddress": am01EthereumRegistryAddressRopsten,
	}

	newConfigBytes, err := json.MarshalIndent(configMap, "", "    ")
	if err != nil {
		return fmt.Errorf("marshal migrated config: %s", err.Error())
	}

	if err := ioutil.WriteFile(path.Join(repoPath, "config"), newConfigBytes, os.ModePerm); err != nil {
		return fmt.Errorf("writing migrated config: %s", err.Error())
	}

	if err := writeRepoVer(repoPath, am01DownVersion); err != nil {
		return fmt.Errorf("dropping repover to %d: %s", am01DownVersion, err.Error())
	}
	return nil
}