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utils.go
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/
utils.go
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package notifier
import (
"crypto/md5"
"fmt"
"io"
"math/big"
"github.com/fox-one/pando/core"
"github.com/fox-one/pando/pkg/number"
"github.com/gofrs/uuid"
"github.com/shopspring/decimal"
)
func mixinRawTransactionTraceId(hash string, index uint8) string {
h := md5.New()
_, _ = io.WriteString(h, hash)
b := new(big.Int).SetInt64(int64(index))
h.Write(b.Bytes())
s := h.Sum(nil)
s[6] = (s[6] & 0x0f) | 0x30
s[8] = (s[8] & 0x3f) | 0x80
sid, err := uuid.FromBytes(s)
if err != nil {
panic(err)
}
return sid.String()
}
func getDebt(cat *core.Collateral, vat *core.Vault) decimal.Decimal {
return number.Ceil(cat.Rate.Mul(vat.Art), 8)
}
func getCollateralRate(cat *core.Collateral, vat *core.Vault) string {
ink := vat.Ink
debt := getDebt(cat, vat)
rate := decimal.Zero
if debt.IsPositive() {
rate = ink.Mul(cat.Price).Div(debt).Truncate(6)
}
return fmt.Sprintf(`%s%%`, rate.Shift(2))
}