// ==UserScript==
// @name         QQ空间说说删除脚本
// @namespace    none
// @version      1.0.1
// @description  用于一键删除QQ空间的说说，大概700毫秒左右删除一条
// @author       gogofishman
// @license MIT
// @include      *://user.qzone.qq.com/*
// @downloadURL none
// ==/UserScript==

var isStart = false;
var delayTime = 500;
var completed = 0;

(function () {
    'use strict';

    window.onload = AddDiv;
})();

//添加控制面板
function AddDiv() {
    let newDiv = document.createElement('div');
    newDiv.id = 'ShuoShuoDelete';

    //样式
    let style = newDiv.style;
    style.width = '200px';
    style.height = '200px';
    style.position = 'fixed';
    style.top = '41px';
    style.right = '0';
    style.zIndex = '99999';
    style.padding = '10px';
    style.backgroundColor = 'white';
    style.backgroundImage = 'url(https://p.sda1.dev/13/3f9eb408f25616eb024b972f7fd1a70d/忍野忍.png)'
    style.backgroundRepeat = 'no-repeat';
    style.backgroundSize = 'cover';
    style.boxShadow = '0px 2px 5px rgba(0, 0, 0, 0.5)';

    //内容
    newDiv.innerHTML = '' +
        '    <style>' +
        '       .shuoshuoDelete * {margin-top: 5px;margin-bottom: 5px;font-size: 14px}' +
        '    </style>' +
        '    <div class="shuoshuoDelete" style="margin: 0 auto;text-align: center">\n' +
        '       <h1 style="font-size: 17px;margin-bottom: 10px">QQ空间说说删除脚本</h1>\n' +
        '       <h2>删除顺序：</h2>\n' +
        '       <input type="radio" name="order" value="正序" checked>正序\n' +
        '       <input type="radio" name="order" value="倒序">倒序\n' +
        '       <br>\n' +
        '       <div style="margin-top: 20px">\n' +
        '           <button id="shuoshuoDelete_start" style="padding: 5px">启动</button>\n' +
        '           <button id="shuoshuoDelete_end" style="padding: 5px">停止</button>\n' +
        '       </div>\n' +
        '       <p id="shuoshuoDelete_state" style="color: red">未运行</p>' +
        '    </div>'

    let div = document.getElementById('layBackground');
    if (div !== null) {
        div.appendChild(newDiv);

        //添加启动停止
        document.getElementById('shuoshuoDelete_start').addEventListener('click', start);
        document.getElementById('shuoshuoDelete_end').addEventListener('click', end);
    }
}

function sleep(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
}

function Print(text) {
    console.log(`[说说脚本] - ${text}`)
}

/**
 * 等待直到条件成立
 * @param {function} control 控制条件
 * @param {number} step 每次验证间隔时间 ms
 * @param {number} timeOut 超时时间 ms
 * @returns {Promise<void>}
 * @constructor
 */
async function WaitUntil(control, step = 500, timeOut = 10000) {
    let count = 0;
    let outCount = timeOut / step;

    while (count <= outCount) {
        count++;
        await sleep(step);
        let _c = control();
        if (_c) {
            return;
        }
    }
}

//启动
function start() {
    if (isStart) return;
    if (confirm("是否开始删除说说？")) {
        isStart = true;
        ChangeStateText('正在删除', 'green')
        Print("开始删除...");
        completed = 0;
        DeleteRun().then(() => Print('删除完成'));
    }
}

//停止
function end() {
    if (!isStart) return;
    isStart = false;
    Print("停止删除!")
}

//改变状态文字
function ChangeStateText(text, color) {
    let p = document.getElementById('shuoshuoDelete_state');
    p.innerText = text;
    p.style.color = color;
}

//删除程序
async function DeleteRun() {

    //删除顺序
    let order = document.querySelector('input[name="order"]:checked').value;

    //转到说说页面
    let shushuo = document.querySelector('a[title="说说"]');
    if (shushuo == null) return;
    shushuo.click();

    //等待跳转成功,10秒超时
    await WaitUntil(
        () => document.querySelector('.app_canvas_frame') != null
    )
    if (document.querySelector('.app_canvas_frame') == null) {
        Print('跳转超时！')
        return;
    }
    Print('跳转到说说界面')

    //如果倒序，跳转到最后一页
    if (order === '倒序') {
        Print('倒序')

        await WaitUntil(
            () => document.querySelector('.app_canvas_frame').contentDocument.querySelector('a[title="末页"]') != null
        )

        let last = document.querySelector('.app_canvas_frame').contentDocument.querySelector('a[title="末页"]');
        if (last != null) {
            last.click()
            await sleep(3000);

            Print("跳转到末页...")
            Print("开始删除当前页说说...")
        }
    }

    //开始删除
    DeleteCurrentPage(order);
}

//删除当前页中所有的说说
async function DeleteCurrentPage(order) {
    if (!isStart) {
        alert("已停止删除说说功能！")
        ChangeStateText(`已停止 ${completed}`,'red')
        return
    }
    //等待页面加载完成
    if (order !== '倒序') {
        await WaitUntil(() => document.querySelector('.app_canvas_frame').contentDocument.querySelector('a[title="末页"]') != null)
    }else{
        await WaitUntil(() => document.querySelector('.app_canvas_frame').contentDocument.querySelector('a[title="首页"]') != null)
    }

    //获取第一个说说
    let li = document.querySelector('.app_canvas_frame').contentDocument.querySelector('.feed');
    if (li == null) {
        Print('当前页删除完成！')
        NextPage(order);
    } else {
        //删除
        let button = li.querySelector('.del_btn');
        if (button != null) {
            button.click();
            await WaitUntil(() => document.querySelector('.qz_dialog_layer_btn') != null)
            document.querySelector('.qz_dialog_layer_btn').click();

            Print('删除说说+1');
            completed++;
            ChangeStateText(`正在删除 ${completed}` , 'green')
            
            await sleep(delayTime);
        }

        //往下循环执行
        DeleteCurrentPage(order);
    }
}

async function NextPage(order) {
    let html = document.querySelector('.app_canvas_frame').contentDocument;
    let next = order !== '倒序' ? html.querySelector('a[title="下一页"]') : html.querySelector('a[title="上一页"]');

    if (next != null) {
        next.click()
        Print("点击下一页")
        await WaitUntil(() => document.querySelector('.app_canvas_frame').contentDocument.getElementById('msgList').childElementCount > 0)
        DeleteCurrentPage(order);
    }else {
        //全部完成
        ChangeStateText('未运行','red')
    }
}