forked from go-numb/go-dydx
/
helper.go
79 lines (66 loc) · 1.79 KB
/
helper.go
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package helpers
import (
"fmt"
"math/rand"
"net/url"
"strconv"
"strings"
"time"
"github.com/ethereum/go-ethereum/common/hexutil"
solsha3 "github.com/miguelmota/go-solidity-sha3"
uuid "github.com/satori/go.uuid"
)
var namespace = Must(FromString("0f9da948-a6fb-4c45-9edc-4685c3f3317d"))
func getUserId(address string) string {
return uuid.NewV5(namespace, address).String()
}
func GetAccountId(address string) string {
return uuid.NewV5(namespace, getUserId(strings.ToLower(address))+strconv.Itoa(0)).String()
}
func FromString(input string) (u uuid.UUID, err error) {
err = u.UnmarshalText([]byte(input))
return
}
func Must(u uuid.UUID, err error) uuid.UUID {
if err != nil {
panic(err)
}
return u
}
func RandomClientId() string {
rand.Seed(time.Now().UnixNano())
return fmt.Sprintf("%016d", rand.Intn(10000000000000000))
}
func GenerateQueryPath(url string, params url.Values) string {
if len(params) == 0 {
return url
}
return fmt.Sprintf("%s?%s", url, params.Encode())
}
func CreateTypedSignature(signature string, sigType int) string {
return fmt.Sprintf("%s0%s", fixRawSignature(signature), strconv.Itoa(sigType))
}
func fixRawSignature(signature string) string {
stripped := strings.TrimPrefix(signature, "0x")
if len(stripped) != 130 {
panic(fmt.Sprintf("Invalid raw signature: %s", signature))
}
rs := stripped[:128]
v := stripped[128:130]
if v == "00" {
return "0x" + rs + "1b"
}
if v == "01" {
return "0x" + rs + "1c"
}
if v == "1b" || v == "1c" {
return "0x" + stripped
}
panic(fmt.Sprintf("Invalid v value: %s", v))
}
func HashString(input string) string {
return hexutil.Encode(solsha3.SoliditySHA3([]string{"string"}, input))
}
func ExpireAfter(duration time.Duration) string {
return time.Now().Add(duration).UTC().Format("2006-01-02T15:04:05.999Z")
}