Initial functional commit

api.go

@@ -0,0 +1,86 @@
+package tastytrade
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+const (
+	baseURL = "https://api.tastytrade.com"
+)
+
+// TastytradeAPI represents the Tastytrade API client
+type TastytradeAPI struct {
+	httpClient *http.Client
+	authToken  string
+	host       string
+}
+
+// NewTastytradeAPI creates a new instance of TastytradeAPI
+func NewTastytradeAPI(hosts ...string) *TastytradeAPI {
+	host := baseURL
+	if len(hosts) > 0 {
+		host = hosts[0]
+	}
+	return &TastytradeAPI{
+		httpClient: &http.Client{Timeout: 10 * time.Second},
+		host:       host,
+	}
+}
+
+// fetchData sends a GET request to the specified URL with authorization
+func (api *TastytradeAPI) fetchData(url string) (map[string]interface{}, error) {
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", api.authToken)
+
+	resp, err := api.httpClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= 400 && resp.StatusCode < 500 {
+		return nil, fmt.Errorf("client error occurred: status code %d", resp.StatusCode)
+	} else if resp.StatusCode >= 500 {
+		return nil, fmt.Errorf("server error occurred: status code %d", resp.StatusCode)
+	}
+
+	var data map[string]interface{}
+	if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
+		return nil, err
+	}
+
+	return data, nil
+}
+
+// Helper function to fetch and unmarshal data
+func (api *TastytradeAPI) fetchDataAndUnmarshal(urlVal string, v interface{}) error {
+	req, err := http.NewRequest("GET", urlVal, nil)
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Authorization", api.authToken)
+
+	resp, err := api.httpClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= 400 && resp.StatusCode < 500 {
+		return fmt.Errorf("client error occurred: status code %d", resp.StatusCode)
+	} else if resp.StatusCode >= 500 {
+		return fmt.Errorf("server error occurred: status code %d", resp.StatusCode)
+	}
+
+	if err := json.NewDecoder(resp.Body).Decode(&v); err != nil {
+		return err
+	}
+
+	return nil
+}