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multisigs.go
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multisigs.go
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package mixin
import (
"context"
"errors"
"fmt"
"sort"
"time"
"github.com/shopspring/decimal"
)
const (
UTXOStateUnspent = "unspent"
UTXOStateSigned = "signed"
UTXOStateSpent = "spent"
)
const (
MultisigActionSign = "sign"
MultisigActionUnlock = "unlock"
)
const (
MultisigStateInitial = "initial"
MultisigStateSigned = "signed"
)
type (
MultisigUTXO struct {
Type string `json:"type"`
UserID string `json:"user_id"`
UTXOID string `json:"utxo_id"`
AssetID string `json:"asset_id"`
TransactionHash Hash `json:"transaction_hash"`
OutputIndex int `json:"output_index"`
Sender string `json:"sender,omitempty"`
Amount decimal.Decimal `json:"amount"`
Threshold uint8 `json:"threshold"`
Members []string `json:"members"`
Memo string `json:"memo"`
State string `json:"state"`
CreatedAt time.Time `json:"created_at"`
UpdatedAt time.Time `json:"updated_at"`
SignedBy string `json:"signed_by"`
SignedTx string `json:"signed_tx"`
}
MultisigRequest struct {
Type string `json:"type"`
RequestID string `json:"request_id"`
UserID string `json:"user_id"`
AssetID string `json:"asset_id"`
Amount decimal.Decimal `json:"amount"`
Threshold uint8 `json:"threshold"`
Senders []string `json:"senders"`
Receivers []string `json:"receivers"`
Signers []string `json:"signers"`
Memo string `json:"memo"`
Action string `json:"action"`
State string `json:"state"`
TransactionHash Hash `json:"transaction_hash"`
RawTransaction string `json:"raw_transaction"`
CreatedAt time.Time `json:"created_at"`
UpdatedAt time.Time `json:"updated_at"`
CodeID string `json:"code_id"`
}
)
func (utxo MultisigUTXO) Asset() Hash {
return NewHash([]byte(utxo.AssetID))
}
func HashMembers(ids []string) string {
sort.Slice(ids, func(i, j int) bool { return ids[i] < ids[j] })
var in string
for _, id := range ids {
in = in + id
}
return NewHash([]byte(in)).String()
}
// ReadMultisigs return a list of multisig utxos
func (c *Client) ReadMultisigs(ctx context.Context, offset time.Time, limit int) ([]*MultisigUTXO, error) {
params := make(map[string]string)
if !offset.IsZero() {
params["offset"] = offset.UTC().Format(time.RFC3339Nano)
}
if limit > 0 {
params["limit"] = fmt.Sprint(limit)
}
var utxos []*MultisigUTXO
if err := c.Get(ctx, "/multisigs", params, &utxos); err != nil {
return nil, err
}
return utxos, nil
}
// ReadMultisigOutputs return a list of multisig outputs, including unspent, signed, spent utxos
func (c *Client) ReadMultisigOutputs(ctx context.Context, members []string, threshold uint8, offset time.Time, limit int) ([]*MultisigUTXO, error) {
params := make(map[string]string)
if !offset.IsZero() {
params["offset"] = offset.UTC().Format(time.RFC3339Nano)
}
if limit > 0 {
params["limit"] = fmt.Sprint(limit)
}
if len(members) > 0 {
if threshold < 1 || int(threshold) > len(members) {
return nil, errors.New("invalid members")
}
params["members"] = HashMembers(members)
params["threshold"] = fmt.Sprint(threshold)
}
var utxos []*MultisigUTXO
if err := c.Get(ctx, "/multisigs/outputs", params, &utxos); err != nil {
return nil, err
}
return utxos, nil
}
// CreateMultisig create a multisig request
func (c *Client) CreateMultisig(ctx context.Context, action, raw string) (*MultisigRequest, error) {
params := map[string]string{
"action": action,
"raw": raw,
}
var req MultisigRequest
if err := c.Post(ctx, "/multisigs/requests", params, &req); err != nil {
return nil, err
}
return &req, nil
}
// SignMultisig sign a multisig request
func (c *Client) SignMultisig(ctx context.Context, reqID, pin string) (*MultisigRequest, error) {
uri := "/multisigs/requests/" + reqID + "/sign"
params := map[string]string{
"pin": c.EncryptPin(pin),
}
var req MultisigRequest
if err := c.Post(ctx, uri, params, &req); err != nil {
return nil, err
}
return &req, nil
}
// CancelMultisig cancel a multisig request
func (c *Client) CancelMultisig(ctx context.Context, reqID string) error {
uri := "/multisigs/requests/" + reqID + "/cancel"
if err := c.Post(ctx, uri, nil, nil); err != nil {
return err
}
return nil
}
// UnlockMultisig unlock a multisig request
func (c *Client) UnlockMultisig(ctx context.Context, reqID, pin string) error {
var (
uri = "/multisigs/requests/" + reqID + "/unlock"
params = map[string]string{
"pin": c.EncryptPin(pin),
}
)
if err := c.Post(ctx, uri, params, nil); err != nil {
return err
}
return nil
}