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bncclient.go
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bncclient.go
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package bncclient
import (
"fmt"
"github.com/binance-chain/go-sdk/client/basic"
"github.com/binance-chain/go-sdk/client/query"
"github.com/binance-chain/go-sdk/client/websocket"
"github.com/binance-chain/go-sdk/types/msg"
"github.com/binance-chain/go-sdk/types/tx"
"github.com/renproject/mercury/types"
"github.com/renproject/mercury/types/bnctypes"
)
type Client interface {
PrintTime()
Balances(from bnctypes.Address) (int64, error)
}
type client struct {
network bnctypes.Network
queryClient query.QueryClient
basicClient basic.BasicClient
wsClient websocket.WSClient
}
func New(network bnctypes.Network) Client {
var baseURL string
switch network {
case bnctypes.Testnet:
baseURL = "dex.binance.org"
case bnctypes.Mainnet:
baseURL = "testnet-dex.binance.org"
default:
panic(types.ErrUnknownNetwork)
}
c := basic.NewClient(baseURL)
return &client{
basicClient: c,
queryClient: query.NewClient(c),
wsClient: websocket.NewClient(c),
}
}
func (client *client) PrintTime() {
t, err := client.queryClient.GetTime()
if err != nil {
fmt.Println(err)
return
}
fmt.Println(t.ApTime, t.BlockTime)
}
func (client *client) OpenOrder(from bnctypes.Address) {
return client.BuildTx(from, msg.NewCreateOrderMsg(from.AccAddress(), "", 0))
}
func (client *client) Mint(from bnctypes.Address, symbol string, amount int64) (types.Tx, error) {
return client.BuildTx(from, msg.NewMintMsg(
from.AccAddress(),
symbol,
amount,
))
}
func (client *client) BuildTx(from bnctypes.Address, m msg.Msg) (types.Tx, error) {
acc, err := client.queryClient.GetAccount(from.String())
if err != nil {
return nil, err
}
// prepare message to sign
signMsg := tx.StdSignMsg{
ChainID: client.network.String(),
AccountNumber: acc.Number,
Sequence: acc.Sequence,
Memo: "",
Msgs: []msg.Msg{m},
Source: tx.Source,
}
// special logic for createOrder, to save account query
if orderMsg, ok := m.(msg.CreateOrderMsg); ok {
orderMsg.ID = msg.GenerateOrderID(signMsg.Sequence+1, from.AccAddress())
signMsg.Msgs[0] = orderMsg
}
// validate messages
for _, m := range signMsg.Msgs {
if err := m.ValidateBasic(); err != nil {
return nil, err
}
}
return bnctypes.NewTx(signMsg), nil
}