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trade.go
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trade.go
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package cmds
import (
"io"
"os"
"path/filepath"
"text/template"
"time"
"github.com/spf13/cobra"
"github.com/transmutate-io/atomicswap/cryptos"
"github.com/transmutate-io/atomicswap/internal/cmdutil"
"github.com/transmutate-io/atomicswap/internal/flagutil"
"github.com/transmutate-io/atomicswap/internal/flagutil/exitcodes"
"github.com/transmutate-io/atomicswap/internal/tplutil"
"github.com/transmutate-io/atomicswap/stages"
"github.com/transmutate-io/atomicswap/trade"
"github.com/transmutate-io/cryptocore/types"
"gopkg.in/yaml.v2"
)
var (
TradeCmd = &cobra.Command{
Use: "trade",
Short: "trade commands",
Aliases: []string{"t"},
}
newTradeCmd = &cobra.Command{
Use: "new <name> <own_amount> <own_crypto> <trader_amount> <trader_crypto> <duration>",
Short: "create a new trade",
Aliases: []string{"n"},
Args: cobra.ExactArgs(6),
Run: cmdNewTrade,
}
listTradesCmd = &cobra.Command{
Use: "list",
Short: "list trades to output",
Aliases: []string{"l", "ls"},
Args: cobra.NoArgs,
Run: cmdListTrades,
}
renameTradeCmd = &cobra.Command{
Use: "rename <old_name> <new_name>",
Short: "rename trade",
Aliases: []string{"ren", "r"},
Args: cobra.ExactArgs(2),
Run: cmdRenameTrade,
}
deleteTradeCmd = &cobra.Command{
Use: "delete <name>",
Short: "delete a trade",
Aliases: []string{"d", "del", "rm"},
Args: cobra.ExactArgs(1),
Run: cmdDeleteTrade,
}
exportTradesCmd = &cobra.Command{
Use: "export [name1] [name2] [...]",
Short: "export trades to output",
Aliases: []string{"exp", "e"},
Run: cmdExportTrades,
}
importTradesCmd = &cobra.Command{
Use: "import",
Short: "import trades from input",
Aliases: []string{"imp", "i"},
Args: cobra.NoArgs,
Run: cmdImportTrades,
}
)
func init() {
flagutil.AddFlags(flagutil.FlagFuncMap{
listTradesCmd.Flags(): []flagutil.FlagFunc{
flagutil.AddVerbose,
flagutil.AddFormat,
flagutil.AddOutput,
},
exportTradesCmd.Flags(): []flagutil.FlagFunc{
flagutil.AddAll,
flagutil.AddOutput,
},
importTradesCmd.Flags(): []flagutil.FlagFunc{
flagutil.AddInput,
},
})
cmdutil.AddCommands(TradeCmd, []*cobra.Command{
newTradeCmd,
listTradesCmd,
renameTradeCmd,
deleteTradeCmd,
exportTradesCmd,
importTradesCmd,
})
}
func newTrade(ownAmount types.Amount, ownCrypto *cryptos.Crypto, traderAmount types.Amount, traderCrypto *cryptos.Crypto, dur time.Duration) (trade.Trade, error) {
tr, err := trade.NewOnChainBuy(
ownAmount, ownCrypto,
traderAmount, traderCrypto,
dur,
)
if err != nil {
return nil, err
}
th := trade.NewHandler(trade.DefaultStageHandlers)
th.InstallStageHandler(stages.SendProposal, trade.InterruptHandler)
for _, i := range th.Unhandled(tr.Stager().Stages()...) {
th.InstallStageHandler(i, trade.NoOpHandler)
}
if err = th.HandleTrade(tr); err != nil {
return nil, err
}
return tr, nil
}
func cmdNewTrade(cmd *cobra.Command, args []string) {
tr, err := newTrade(
types.Amount(args[1]), mustParseCrypto(args[2]),
types.Amount(args[3]), mustParseCrypto(args[4]),
mustParseDuration(args[5]),
)
if err != nil {
cmdutil.ErrorExit(exitcodes.ExecutionError, err)
}
mustSaveTrade(cmd, args[0], tr)
}
func listTrades(td string, out io.Writer, tpl *template.Template) error {
return eachTrade(td, func(name string, tr trade.Trade) error {
return tpl.Execute(out, newTradeInfo(name, tr))
})
}
func cmdListTrades(cmd *cobra.Command, args []string) {
tpl := tplutil.MustOpenTemplate(cmd.Flags(), tradeListTemplates, nil)
out, closeOut := flagutil.MustOpenOutput(cmd.Flags())
defer closeOut()
if err := listTrades(tradesDir(cmd), out, tpl); err != nil {
cmdutil.ErrorExit(exitcodes.ExecutionError, err)
}
}
func cmdDeleteTrade(cmd *cobra.Command, args []string) {
err := os.Remove(tradePath(cmd, args[0]))
if err != nil {
cmdutil.ErrorExit(exitcodes.ExecutionError, err)
}
}
type tradeSelectFunc = func(name string, tr trade.Trade) bool
func exportTrades(td string, tradeSelect tradeSelectFunc) (map[string]trade.Trade, error) {
trades := make(map[string]trade.Trade, 16)
err := eachTrade(td, func(name string, tr trade.Trade) error {
if tradeSelect(name, tr) {
trades[name] = tr
}
return nil
})
if err != nil {
return nil, err
}
return trades, nil
}
func cmdExportTrades(cmd *cobra.Command, args []string) {
var ts tradeSelectFunc
if flagutil.MustAll(cmd.Flags()) {
ts = func(name string, tr trade.Trade) bool { return true }
} else {
names := make(map[string]struct{}, len(args))
for _, i := range args {
names[i] = struct{}{}
}
ts = func(name string, tr trade.Trade) bool {
_, ok := names[name]
return ok
}
}
trades, err := exportTrades(tradesDir(cmd), ts)
if err != nil {
cmdutil.ErrorExit(exitcodes.ExecutionError, err)
}
if len(trades) == 0 {
cmdutil.ErrorExit(exitcodes.ExecutionError, "no trades selected")
}
out, closeOut := flagutil.MustOpenOutput(cmd.Flags())
defer closeOut()
if err = yaml.NewEncoder(out).Encode(trades); err != nil {
cmdutil.ErrorExit(exitcodes.ExecutionError, err)
}
}
func cmdImportTrades(cmd *cobra.Command, args []string) {
in, closeIn := flagutil.MustOpenInput(cmd.Flags())
defer closeIn()
trades := make(map[string]*trade.OnChainTrade, 16)
if err := yaml.NewDecoder(in).Decode(trades); err != nil {
cmdutil.ErrorExit(exitcodes.ExecutionError, err)
}
for n, tr := range trades {
mustSaveTrade(cmd, filepath.FromSlash(n), tr)
}
}
func renameFile(oldPath string, newPath string) error {
d, _ := filepath.Split(newPath)
if err := os.MkdirAll(d, 0755); err != nil {
return err
}
return os.Rename(oldPath, newPath)
}
func cmdRenameTrade(cmd *cobra.Command, args []string) {
if err := renameFile(tradePath(cmd, args[0]), tradePath(cmd, args[1])); err != nil {
cmdutil.ErrorExit(exitcodes.ExecutionError, err)
}
}