client code for poll voting

internal/client/poll.go

@@ -5,6 +5,8 @@
 package client
 
 import (
+	"bytes"
+	"encoding/json"
 	"fmt"
 	"net/http"
 
@@ -29,3 +31,25 @@ func (g *Client) GetPoll(pollID string) (model.Poll, error) {
 
 	return poll, nil
 }
+
+func (g *Client) VoteInPoll(pollID string, choices []int) error {
+	form := struct {
+		Choices []int `json:"choices"`
+	}{
+		Choices: choices,
+	}
+
+	data, err := json.Marshal(form)
+	if err != nil {
+		return fmt.Errorf("unable to encode the JSON form: %w", err)
+	}
+
+	requestBody := bytes.NewBuffer(data)
+	url := g.Authentication.Instance + pollPath + "/" + pollID + "/vote"
+
+	if err := g.sendRequest(http.MethodPost, url, requestBody, nil); err != nil {
+		return fmt.Errorf("received an error after sending the request to vote in the poll: %w", err)
+	}
+
+	return nil
+}