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candles.go
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candles.go
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package rest
import (
"github.com/bitfinexcom/bitfinex-api-go/v2"
"path"
"strings"
"net/url"
"fmt"
)
// CandleService manages the Candles endpoint.
type CandleService struct {
Synchronous
}
// Return Candles for the public account.
func (c *CandleService) Last(symbol string, resolution bitfinex.CandleResolution) (*bitfinex.Candle, error) {
if symbol == "" {
return nil, fmt.Errorf("symbol cannot be empty")
}
segments := []string{ "trade", string(resolution), symbol }
req := NewRequestWithMethod(path.Join("candles", strings.Join(segments,":"), "LAST"), "GET")
req.Params = make(url.Values)
raw, err := c.Request(req)
if err != nil {
return nil, err
}
cs, err := bitfinex.NewCandleFromRaw(symbol, resolution, raw)
if err != nil {
return nil, err
}
return cs, nil
}
// Return Candles for the public account.
func (c *CandleService) History(symbol string, resolution bitfinex.CandleResolution) (*bitfinex.CandleSnapshot, error) {
if symbol == "" {
return nil, fmt.Errorf("symbol cannot be empty")
}
segments := []string{ "trade", string(resolution), symbol }
req := NewRequestWithMethod(path.Join("candles", strings.Join(segments,":"), "HIST"), "GET")
raw, err := c.Request(req)
if err != nil {
return nil, err
}
data := make([][]float64, 0, len(raw))
for _, ifacearr := range raw {
if arr, ok := ifacearr.([]interface{}); ok {
sub := make([]float64, 0, len(arr))
for _, iface := range arr {
if flt, ok := iface.(float64); ok {
sub = append(sub, flt)
}
}
data = append(data, sub)
}
}
cs, err := bitfinex.NewCandleSnapshotFromRaw(symbol, resolution, data)
if err != nil {
return nil, err
}
return cs, nil
}
// Return Candles for the public account.
func (c *CandleService) HistoryWithQuery(
symbol string,
resolution bitfinex.CandleResolution,
start bitfinex.Mts,
end bitfinex.Mts,
limit bitfinex.QueryLimit,
sort bitfinex.SortOrder,
) (*bitfinex.CandleSnapshot, error) {
if symbol == "" {
return nil, fmt.Errorf("symbol cannot be empty")
}
segments := []string{ "trade", string(resolution), symbol }
req := NewRequestWithMethod(path.Join("candles", strings.Join(segments,":"), "HIST"), "GET")
req.Params = make(url.Values)
//req.Params.Add("end", strconv.FormatInt(start, 10))
//req.Params.Add("end", strconv.FormatInt(start, 10))
req.Params.Add("end", string(end))
req.Params.Add("start", string(start))
req.Params.Add("limit", string(limit))
req.Params.Add("sort", string(sort))
raw, err := c.Request(req)
if err != nil {
return nil, err
}
data := make([][]float64, 0, len(raw))
for _, ifacearr := range raw {
if arr, ok := ifacearr.([]interface{}); ok {
sub := make([]float64, 0, len(arr))
for _, iface := range arr {
if flt, ok := iface.(float64); ok {
sub = append(sub, flt)
}
}
data = append(data, sub)
}
}
cs, err := bitfinex.NewCandleSnapshotFromRaw(symbol, resolution, data)
if err != nil {
return nil, err
}
return cs, nil
}