Function findChatButton

linuxdo-helper.user.js:376–400

* 查找聊天按钮元素 * @returns {Promise } 聊天按钮元素或null

()

     * @returns {Promise<HTMLElement|null>} 聊天按钮元素或null
     */
    async function findChatButton() {
        try {
            const timeout = randomByJitter(
                ELEMENT_WAIT_TIMEOUT,
                RANDOM_DELAY_CONFIG.waitForElementJitter,
                800
            );

            const chatButton = await Promise.race([
                waitForElement(SELECTORS.chatButton),
                new Promise((_, reject) =>
                    setTimeout(() => reject(new Error('timeout')), timeout)
                )
            ]).catch(() => null);

            if (chatButton) {
                return chatButton;
            }
        } catch (e) {
            // 忽略错误，继续尝试直接查找
        }

        return document.querySelector(SELECTORS.chatButton) ||
            document.querySelector(SELECTORS.chatLink)?.closest('li');
    }

    /**
     * 查找备用插入位置