[golang] bootstrapped a client in yet another language

golang/pkg/api/api.go

@@ -0,0 +1,87 @@
+package api
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"log/slog"
+	"net/http"
+	"time"
+)
+
+type Error[T any] struct {
+	Code    int    `json:"code"`
+	Data    T      `json:"data"`
+	Message string `json:"message"`
+}
+
+type APIMessage[T any, E any] struct {
+	Data  T        `json:"data"`
+	Error Error[E] `json:"error"`
+	//meta
+}
+
+type Response struct {
+	Response []byte
+	Err      error
+}
+
+func Send[T any](c *Client, method, path string, payload any) (message APIMessage[T, any], err error) {
+	resp := make(chan *Response)
+	c.channel <- &Request{
+		method:   method,
+		path:     path,
+		payload:  payload,
+		priority: 10,
+		resp:     resp,
+	}
+	res := <-resp
+	if res.Err != nil {
+		return message, res.Err
+	}
+	err = json.Unmarshal(res.Response, &message)
+	return message, err
+}
+
+func (c *Client) sendOne(method, path string, payload any) (body []byte, err error) {
+	slog.Debug("Request", "method", method, "path", path, "payload", payload)
+	var req *http.Request
+	if payload != nil {
+		body, err = json.Marshal(payload)
+		if err == nil {
+			req, err = http.NewRequest(method, c.baseURL+path, bytes.NewBuffer(body))
+		} else {
+			return nil, err
+		}
+	} else {
+		req, err = http.NewRequest(method, c.baseURL+path, nil)
+	}
+	if err != nil {
+		return nil, err
+	}
+	req.Header = *c.headers
+	req = req.WithContext(c.ctx)
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		slog.Error("sendOne Do", "method", method, "path", path, "error", err)
+		return nil, err
+	}
+	defer func() {
+		if e := resp.Body.Close(); err == nil {
+			err = e
+		}
+	}()
+	if body, err = io.ReadAll(resp.Body); err != nil {
+		slog.Error("sendOne ReadAll", "method", method, "path", path, "error", err)
+		return nil, err
+	}
+	slog.Debug("Response", "body", string(body))
+	switch resp.StatusCode {
+	case 429:
+		e := decode429(body)
+		time.Sleep(time.Duration(e.Error.Data.RetryAfter * float64(time.Second)))
+		return c.sendOne(method, path, payload)
+	}
+	return body, nil
+}