// ==UserScript==
// @name         去你的热搜 - 移除H5版微博的热搜显示
// @namespace    http://tampermonkey.net/
// @version      0.4
// @description  移除H5版微博的热搜显示
// @author       You
// @match        https://m.weibo.cn/*
// @grant        none
// @license      WTFPL
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // 函数：根据特定父类名更改特定子类名元素的文本内容
    function changeTextByParentAndChild(parentClass, childClass, newText) {
        let parents = document.getElementsByClassName(parentClass);
        for (let parent of parents) {
            let childElements = parent.getElementsByClassName(childClass);
            for (let childElement of childElements) {
                childElement.textContent = newText;
            }
        }
    }

    // 函数：根据特定父类名更改输入元素的占位符
    function changePlaceholderByParent(parentClass, newPlaceholder) {
        let parents = document.getElementsByClassName(parentClass);
        for (let parent of parents) {
            let inputElements = parent.getElementsByTagName('input');
            for (let inputElement of inputElements) {
                if (inputElement.getAttribute('type') === 'search') {
                    inputElement.setAttribute('placeholder', newPlaceholder);
                }
            }
        }
    }

    // 函数：移除具有特定类名的元素
    function removeElementsByClass(className) {
        let elements = document.getElementsByClassName(className);
        while (elements.length > 0) {
            elements[0].parentNode.removeChild(elements[0]);
        }
    }

    // 创建一个MutationObserver来监视DOM中的变化
    let observer = new MutationObserver(function(mutations) {
        mutations.forEach(function(mutation) {
            // 检查添加的节点中是否包含具有指定父类和子类名的元素
            let addedNodes = mutation.addedNodes;
            for (let node of addedNodes) {
                if (node.getElementsByClassName) {
                    let parents = node.getElementsByClassName('nav-search');
                    for (let parent of parents) {
                        changeTextByParentAndChild('nav-search', 'm-text-cut', '微博搜索');
                    }

                    changePlaceholderByParent('nt-search', '微博搜索');

                    if (document.querySelector('.nt-search')) {
                        removeElementsByClass('card16');
                    }
                }
            }
        });
    });

    // 开始观察文档的变化
    observer.observe(document.body, {
        childList: true,
        subtree: true
    });
})();