Crypto and warrants added

warrants.go

@@ -0,0 +1,75 @@
+package tastytrade
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+type Warrant struct {
+	Symbol         string `json:"symbol"`
+	InstrumentType string `json:"instrument-type"`
+	ListedMarket   string `json:"listed-market"`
+	Description    string `json:"description"`
+	IsClosingOnly  bool   `json:"is-closing-only"`
+	Active         bool   `json:"active"`
+}
+
+type ListWarrantsResult struct {
+	Data struct {
+		Items []Warrant `json:"items"`
+	} `json:"data"`
+	Context string `json:"context"`
+}
+
+type GetWarrantResult struct {
+	Data    Warrant `json:"data"`
+	Context string  `json:"context"`
+}
+
+// ListWarrants retrieves list of warrants
+func (api *TastytradeAPI) ListWarrants(symbols ...string) (ListWarrantsResult, error) {
+	url := fmt.Sprintf("%s/instruments/warrants", api.host)
+	if len(symbols) > 0 {
+		url = fmt.Sprintf("%s?symbols=%s", url, strings.Join(symbols, ","))
+	}
+	data, err := api.fetchData(url)
+	if err != nil {
+		return ListWarrantsResult{}, err
+	}
+
+	var response ListWarrantsResult
+	jsonData, err := json.Marshal(data)
+	if err != nil {
+		return ListWarrantsResult{}, err
+	}
+
+	err = json.Unmarshal(jsonData, &response)
+	if err != nil {
+		return ListWarrantsResult{}, err
+	}
+
+	return response, nil
+}
+
+// GetWarrant retrieves a specific warrant
+func (api *TastytradeAPI) GetWarrant(symbol string) (GetWarrantResult, error) {
+	url := fmt.Sprintf("%s/instruments/warrants/%s", api.host, symbol)
+	data, err := api.fetchData(url)
+	if err != nil {
+		return GetWarrantResult{}, err
+	}
+
+	var response GetWarrantResult
+	jsonData, err := json.Marshal(data)
+	if err != nil {
+		return GetWarrantResult{}, err
+	}
+
+	err = json.Unmarshal(jsonData, &response)
+	if err != nil {
+		return GetWarrantResult{}, err
+	}
+
+	return response, nil
+}