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package client
import (
"bytes"
"dborg/internal/config"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"time"
)
type Client struct {
config *config.Config
httpClient *http.Client
}
func New(cfg *config.Config) (*Client, error) {
if err := cfg.Validate(); err != nil {
return nil, err
}
return &Client{
config: cfg,
httpClient: &http.Client{
Timeout: cfg.Timeout,
},
}, nil
}
func (c *Client) doRequest(method, path string, params url.Values, body interface{}) ([]byte, error) {
fullURL := c.config.BaseURL + path
if params != nil && len(params) > 0 {
fullURL += "?" + params.Encode()
}
var reqBody io.Reader
if body != nil {
jsonData, err := json.Marshal(body)
if err != nil {
return nil, fmt.Errorf("failed to marshal request body: %w", err)
}
reqBody = bytes.NewBuffer(jsonData)
}
req, err := http.NewRequest(method, fullURL, reqBody)
if err != nil {
return nil, fmt.Errorf("failed to create request: %w", err)
}
req.Header.Set("X-API-Key", c.config.APIKey)
req.Header.Set("User-Agent", c.config.UserAgent)
if body != nil {
req.Header.Set("Content-Type", "application/json")
}
var resp *http.Response
var lastErr error
for attempt := 0; attempt <= c.config.MaxRetries; attempt++ {
if attempt > 0 {
time.Sleep(time.Duration(attempt) * time.Second)
}
resp, err = c.httpClient.Do(req)
if err != nil {
lastErr = err
continue
}
defer resp.Body.Close()
if resp.StatusCode == http.StatusOK || resp.StatusCode == http.StatusCreated {
return io.ReadAll(resp.Body)
}
bodyBytes, _ := io.ReadAll(resp.Body)
switch resp.StatusCode {
case http.StatusForbidden:
lastErr = fmt.Errorf("access denied (403): %s - This endpoint requires premium access", string(bodyBytes))
case http.StatusUnauthorized:
lastErr = fmt.Errorf("unauthorized (401): %s - Check your API key", string(bodyBytes))
case http.StatusTooManyRequests:
lastErr = fmt.Errorf("rate limit exceeded (429): %s", string(bodyBytes))
case http.StatusBadRequest:
lastErr = fmt.Errorf("bad request (400): %s", string(bodyBytes))
default:
lastErr = fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(bodyBytes))
}
if resp.StatusCode != http.StatusTooManyRequests && resp.StatusCode < 500 {
break
}
}
return nil, lastErr
}
func (c *Client) Get(path string, params url.Values) ([]byte, error) {
return c.doRequest(http.MethodGet, path, params, nil)
}
func (c *Client) Post(path string, body interface{}) ([]byte, error) {
return c.doRequest(http.MethodPost, path, nil, body)
}
func (c *Client) Delete(path string) ([]byte, error) {
return c.doRequest(http.MethodDelete, path, nil, nil)
}
func (c *Client) Patch(path string, body interface{}) ([]byte, error) {
return c.doRequest(http.MethodPatch, path, nil, body)
}
func (c *Client) Put(path string, body interface{}) ([]byte, error) {
return c.doRequest(http.MethodPut, path, nil, body)
}
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