'Fix issue #708: Error handling, naming conventions, and commenting'

internal/gitlabnet/twofactorverify/client.go

 package twofactorverify
 
 import (
-	"context"
-	"errors"
-	"fmt"
-	"net/http"
-
-	"gitlab.com/gitlab-org/gitlab-shell/v14/client"
-	"gitlab.com/gitlab-org/gitlab-shell/v14/internal/command/commandargs"
-	"gitlab.com/gitlab-org/gitlab-shell/v14/internal/config"
-	"gitlab.com/gitlab-org/gitlab-shell/v14/internal/gitlabnet"
-	"gitlab.com/gitlab-org/gitlab-shell/v14/internal/gitlabnet/discover"
+    "context"
+    "errors"
+    "fmt"
+    "net/http"
+    "log"
+
+    "gitlab.com/gitlab-org/gitlab-shell/v14/client"
+    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/command/commandargs"
+    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/config"
+    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/gitlabnet"
+    "gitlab.com/gitlab-org/gitlab-shell/v14/internal/gitlabnet/discover"
 )
 
+// Client is the main struct for handling two-factor authentication operations.
 type Client struct {
-	config *config.Config
-	client *client.GitlabNetClient
+    config *config.Config
+    client *client.GitlabNetClient
 }
 
+// Response represents the response from the two-factor authentication API.
 type Response struct {
-	Success bool   `json:"success"`
-	Message string `json:"message"`
+    Success bool   `json:"success"`
+    Message string `json:"message"`
 }
 
+// RequestBody is the request body for the two-factor authentication API.
 type RequestBody struct {
-	KeyId      string `json:"key_id,omitempty"`
-	UserId     int64  `json:"user_id,omitempty"`
-	OTPAttempt string `json:"otp_attempt,omitempty"`
+    KeyID      string `json:"key_id,omitempty"`
+    UserID     int64  `json:"user_id,omitempty"`
+    OTPAttempt string `json:"otp_attempt,omitempty"`
 }
 
+// NewClient creates a new Client instance.
 func NewClient(config *config.Config) (*Client, error) {
-	client, err := gitlabnet.GetClient(config)
-	if err != nil {
-		return nil, fmt.Errorf("Error creating http client: %v", err)
-	}
+    client, err := gitlabnet.GetClient(config)
+    if err != nil {
+        return nil, fmt.Errorf("Error creating http client: %v", err)
+    }
 
-	return &Client{config: config, client: client}, nil
+    return &Client{config: config, client: client}, nil
 }
 
+// VerifyOTP verifies a one-time password (OTP) for a user.
 func (c *Client) VerifyOTP(ctx context.Context, args *commandargs.Shell, otp string) error {
-	requestBody, err := c.getRequestBody(ctx, args, otp)
-	if err != nil {
-		return err
-	}
-
-	response, err := c.client.Post(ctx, "/two_factor_manual_otp_check", requestBody)
-	if err != nil {
-		return err
-	}
-	defer response.Body.Close()
-
-	return parse(response)
+    requestBody, err := c.getRequestBody(ctx, args, otp)
+    if err != nil {
+        return err
+    }
+
+    response, err := c.client.Post(ctx, "/two_factor_manual_otp_check", requestBody)
+    if err != nil {
+        return err
+    }
+    defer func() {
+        if err := response.Body.Close(); err != nil {
+            log.Printf("Error closing response body: %v", err)
+        }
+    }()
+
+    return parse(response)
 }
 
+// PushAuth handles two-factor authentication via push notification.
 func (c *Client) PushAuth(ctx context.Context, args *commandargs.Shell) error {
-	requestBody, err := c.getRequestBody(ctx, args, "")
-	if err != nil {
-		return err
-	}
-
-	response, err := c.client.Post(ctx, "/two_factor_push_otp_check", requestBody)
-	if err != nil {
-		return err
-	}
-	defer response.Body.Close()
-
-	return parse(response)
+    requestBody, err := c.getRequestBody(ctx, args, "")
+    if err != nil {
+        return err
+    }
+
+    response, err := c.client.Post(ctx, "/two_factor_push_otp_check", requestBody)
+    if err != nil {
+        return err
+    }
+    defer func() {
+        if err := response.Body.Close(); err != nil {
+            log.Printf("Error closing response body: %v", err)
+        }
+    }()
+
+    return parse(response)
 }
 
 func parse(hr *http.Response) error {
-	response := &Response{}
-	if err := gitlabnet.ParseJSON(hr, response); err != nil {
-		return err
-	}
+    response := &Response{}
+    if err := gitlabnet.ParseJSON(hr, response); err != nil {
+        return err
+    }
 
-	if !response.Success {
-		return errors.New(response.Message)
-	}
+    if !response.Success {
+        return errors.New(response.Message)
+    }
 
-	return nil
+    return nil
 }
 
 func (c *Client) getRequestBody(ctx context.Context, args *commandargs.Shell, otp string) (*RequestBody, error) {
-	client, err := discover.NewClient(c.config)
+    client, err := discover.NewClient(c.config)
 
-	if err != nil {
-		return nil, err
-	}
+    if err != nil {
+        return nil, err
+    }
 
-	var requestBody *RequestBody
-	if args.GitlabKeyId != "" {
-		requestBody = &RequestBody{KeyId: args.GitlabKeyId, OTPAttempt: otp}
-	} else {
-		userInfo, err := client.GetByCommandArgs(ctx, args)
-
-		if err != nil {
-			return nil, err
-		}
-
-		requestBody = &RequestBody{UserId: userInfo.UserId, OTPAttempt: otp}
-	}
-
-	return requestBody, nil
-}
+    var requestBody *RequestBody
+    if args.GitlabKeyId != "" {
+        requestBody = &
\ No newline at end of file