feat: Increase status code and support for custom http.Client(#28)

feat(request): Increase status code recognition; And support for custom `http.Client` (#28)

client.go

@@ -1,5 +1,7 @@
 package youdu
 
+import "net/http"
+
 type Config struct {
 	Addr   string
 	Buin   int
@@ -8,14 +10,43 @@ type Config struct {
 }
 
 type Client struct {
-	config    *Config
-	encryptor *Encryptor
-	token     *token
+	config *Config
+	token  *token
+
+	encryptor  *Encryptor
+	httpClient *http.Client
+}
+
+func WithEncryptor(encryptor *Encryptor) func(c *Client) {
+	return func(c *Client) {
+		c.encryptor = encryptor
+	}
+}
+
+func WithHttpClient(client *http.Client) func(c *Client) {
+	return func(c *Client) {
+		c.httpClient = client
+	}
 }
 
-func NewClient(config *Config) *Client {
-	return &Client{
-		config:    config,
-		encryptor: NewEncryptorWithConfig(config),
+type ClientOption func(c *Client)
+
+func NewClient(config *Config, opts ...ClientOption) *Client {
+	c := &Client{
+		config: config,
+	}
+
+	for _, opt := range opts {
+		opt(c)
+	}
+
+	if c.httpClient == nil {
+		c.httpClient = http.DefaultClient
+	}
+
+	if c.encryptor == nil {
+		c.encryptor = NewEncryptorWithConfig(config)
 	}
+
+	return c
 }

request.go

@@ -4,11 +4,16 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
 	"io"
 	"net/http"
 	"net/url"
 )
 
+var (
+	ErrUnexpectedResponseCode = errors.New("youdu sdk: unexpected response code")
+)
+
 type Request struct {
 	Buin    int    `json:"buin"`
 	AppId   string `json:"appId"`
@@ -137,11 +142,15 @@ func (c *Client) encodeRequestBody(opt *requestOptions) (io.Reader, error) {
 }
 
 func (c *Client) sendRequest(req *http.Request, resp interface{}, opts ...responseOption) error {
-	res, err := http.DefaultClient.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return err
 	}
 	defer res.Body.Close()
 
+	if res.StatusCode != http.StatusOK {
+		return ErrUnexpectedResponseCode
+	}
+
 	return c.decodeResponse(res.Body, resp, opts...)
 }