remove entity.go and rename validate to verify func

Author: mahdifarzadi

arcaptcha.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"io/ioutil"
 	"net/http"
-	"strconv"
 )
 
 const arcaptchaApi = "https://arcaptcha.ir/2/siteverify"
@@ -15,55 +14,58 @@ type Website struct {
 	SecretKey string
 }
 
+type verifyReq struct {
+	SiteKey     string `json:"site_key"`
+	SecretKey   string `json:"secret_key"`
+	ChallengeID string `json:"challenge_id"`
+}
+
+type VerifyResp struct {
+	Success    bool     `json:"success"`
+	ErrorCodes []string `json:"error-codes"`
+}
+
 func NewWebsite(siteKey, secretKey string) *Website {
 	return &Website{
 		SiteKey:   siteKey,
 		SecretKey: secretKey,
 	}
 }
 
-func (w *Website) ValidateCaptcha(challengeID string) (success bool, err error) {
-
-	data := &verifyCaptchaRequest{
+func (w *Website) Verify(token string) (VerifyResp, error) {
+	data := &verifyReq{
 		SiteKey:     w.SiteKey,
 		SecretKey:   w.SecretKey,
-		ChallengeID: challengeID,
+		ChallengeID: token,
 	}
+	var resp VerifyResp
+	err := sendRequest(http.MethodPost, arcaptchaApi, data, &resp)
+	return resp, err
+}
+
+func sendRequest(method, url string, data interface{}, resp interface{}) error {
 	bin, err := json.Marshal(data)
 	if err != nil {
-		return
+		return err
 	}
-
-	req, err := http.NewRequest(
-		http.MethodPost,
-		arcaptchaApi,
-		bytes.NewBuffer(bin),
-	)
+	req, err := http.NewRequest(method, url, bytes.NewBuffer(bin))
 	if err != nil {
-		return
+		return err
 	}
-
 	req.Header.Add("Content-Type", "application/json")
-	req.Header.Add("Content-Length", strconv.Itoa(len(string(bin))))
-
 	res, err := http.DefaultClient.Do(req)
 	if err != nil {
-		return
+		return err
 	}
 	defer func() {
 		_ = res.Body.Close()
 	}()
-
 	bin, err = ioutil.ReadAll(res.Body)
 	if err != nil {
-		return
+		return err
 	}
-
-	var response VerifyCaptchaResponse
-	if err = json.Unmarshal(bin, &response); err != nil {
-		return
+	if err = json.Unmarshal(bin, resp); err != nil {
+		return err
 	}
-
-	success = response.Success
-	return
+	return nil
 }