Pull Request Overview

This PR adds support for Device Access Tokens using OAuth Device Code Flow to the Helix Twitch API client. This enables authentication for standalone devices like game consoles and CLIs that may not have easy access to a web browser.

• Added DeviceAccessToken field to the Options struct and corresponding getter/setter methods
• Implemented RequestDeviceVerificationURI and RequestDeviceAccessToken methods for the device code flow
• Updated token precedence logic in setRequestHeaders to include device tokens (between app and user tokens)

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

func (c *Client) refreshToken() error {
	resp, err := c.RefreshUserAccessToken(c.opts.RefreshToken)
	if err != nil || resp.StatusCode != http.StatusOK {
		statusCode := -1
		var errorMessage string
		if resp != nil {
			statusCode = resp.StatusCode
			errorMessage = resp.ErrorMessage
		}
		return fmt.Errorf("failed to refresh token: (%d: %s) %v", statusCode, errorMessage, err)
	}

	c.mu.Lock()
	c.opts.UserAccessToken = resp.Data.AccessToken
	c.opts.RefreshToken = resp.Data.RefreshToken
	c.mu.Unlock()

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Thanks!