// ==UserScript==
// @icon          https://www.douyu.com/favicon.ico
// @name          独轮车-说书人自动弹幕发射器
// @namespace     https://github.com/zhenshiluosuo/Storyteller-AutoBarrageForDouyuTV
// @author        闪光魔法师
// @description   适配斗鱼直播平台的自动弹幕发射器 抽象独轮车 说书人 Github:https://github.com/zhenshiluosuo/Storyteller-AutoBarrageForDouyuTV
// @match         *://www.douyu.com/*
// @version       0.0.2
// @grant         none
// @downloadURL none
// ==/UserScript==
(function () {
    'use strict';

    let tip = false;
    let div1 = document.createElement('div');//默认悬浮窗
    let div2 = document.createElement('div');//控制台
    let css1 = 'background: #1A59B7;color:#ffffff;overflow: hidden;z-index: 998;position: fixed;padding:5px;text-align:center;width: 75px;height: 22px;border-bottom-left-radius: 4px;border-bottom-right-radius: 4px;border-top-left-radius: 4px;border-top-right-radius: 4px;right: 10px;top: 30%;'
    let css2 = 'background: #E5E4E4;color:#ffffff;overflow: hidden;z-index: 999;position: fixed;padding:5px;text-align:center;width: 150px;height: 275px;border-color: #FFFFFF;border: 3px;border-bottom-left-radius: 4px;border-bottom-right-radius: 4px;border-top-left-radius: 4px;border-top-right-radius: 4px;right: 10px;top: 30%;display: none;';
    let max_danmu_long = 43;//弹幕字数限制
    const min_danmu_long = 20;//最小弹幕长度
    const error_danmu_long = 30;//防止无法断句弹幕长度
    let cycle_time;//弹幕周期，单位毫秒 建议设定至6000毫秒以上 过低有系统屏蔽风险
    let story;//textarea内容
    let story_arr = [];//story分段
    let index;//小说分段
    let interval;//定时器

    init();//初始化

//核心功能函数
    function init() {
        div1.id = 'DuLunChe';
        div1.id = 'DuLunChe1';
        div1.style.cssText = css1;
        div2.style.cssText = css2;
        div1.innerHTML = '独轮车控制台';
        div2.innerHTML = '<select id="DuLunCheSelect"><option value="0">单句模式</option><option value="1">说书模式</option><option value="2">多句转轮</option></select><textarea id="DuLunCheText" rows="10" cols="20" placeholder="输入要发射的内容 斗鱼限制单次最多43字"></textarea><div  style="margin: 0 auto;"><input type="text" placeholder="间隔时间(ms) 最少3000" id="DuLunCheTime"/><button id="DuLunCheBtn" style="background-color: #FFFFFF;">出动！</button><br><button id="DuLunCheYincang" style="background-color: #FFFFFF;">隐藏控制台</button></div>';
        div1.onclick = () => {
            div2.style.setProperty('display','block');
            if(!tip){
                tip = true;
                alert('欢迎使用说书人自动弹幕发射装置V3.0，本插件由斗鱼用户重载操作符和祖冲之丶丶基于祖冲之丶丶版制作，项目地址：https://github.com/zhenshiluosuo/Storyteller-AutoBarrageForDouyuTV/ 多句转轮模式每句之间请用回车分隔，斗鱼字数限制43，为了自己的账号和他人观看体验，建议发言间隔调至8000以上，喜欢的好兄弟打个星星吧~求求了！！！');
            }
        };
        document.body.appendChild(div1);
        document.body.appendChild(div2);
        document.getElementById('DuLunCheYincang').onclick = () => {
            div2.style.setProperty('display','none');
        };
        document.getElementById('DuLunCheBtn').onclick = () => {
            if(document.getElementById('DuLunCheBtn').innerText === '出动！') run();
            else finish();
        }
    }

    function run() {
        let btn = document.getElementsByClassName('ChatSend-button')[0];
        let txt = document.getElementsByClassName('ChatSend-txt')[0];
        document.getElementById('DuLunCheBtn').innerText = '中止';
        story = document.getElementById('DuLunCheText').value;
        cycle_time = parseInt(document.getElementById('DuLunCheTime').value);
        if(!story.length || !cycle_time){
            alert('请勿空置运行！');
            finish();
            return;
        }else if(cycle_time <= 2999) {
            alert('请珍惜账号 加大发言间隔！');
            finish();
            document.getElementById('DuLunCheTime').value = '9999';
            return;
        }
        let _value = document.getElementById('DuLunCheSelect').value;
        if(_value === '0') {
            if (story.length > max_danmu_long){
                story = story.slice(0,max_danmu_long + 1);
            }
            interval = setInterval(() => {
                txt.value = story;
                if (btn.innerHTML === '发送') {
                    btn.click();
                }
            }, cycle_time);
        }else {
            if(_value === '1')
                get_better_sentence();
            else
                multiple();
            let len = story_arr.length;
            index = 0;
            interval = setInterval(() => {
                if(index === len){//小说循环
                    index = 0;
                }
                txt.value = story_arr[index++];
                if (btn.innerHTML === '发送') {
                    btn.click();
                }
            }, cycle_time);
        }
    }

    function finish() {
        document.getElementById('DuLunCheBtn').innerText = '出动！';
        clearInterval(interval);
        story_arr = [];
    }

    function get_better_sentence() {
        let len = story.length;
        let flag = 0;//引号标记
        let str = '';
        for (let i = 0; i < len; i++) {
            if((story.charAt(i) === '。' || story.charAt(i) === '！' || story.charAt(i) === '？' || story.charAt(i) === '…' || story.charAt(i) === ' ') && str.length >= min_danmu_long && !flag) {
                str += story.charAt(i);
                story_arr.push(str);
                str = '';
            }else if(story.charAt(i) === '“' || story.charAt(i) === '『' || story.charAt(i) === '「') {
                str += story.charAt(i);
                flag = 1;
            }else if(story.charAt(i) === '”' || story.charAt(i) === '』' || story.charAt(i) === '」') {
                str += story.charAt(i);
                flag = 0;
            }else if((story.charAt(i) === '，' || story.charAt(i) === '；' || story.charAt(i) === '：' || story.charAt(i) === '。' || story.charAt(i) === '！' || story.charAt(i) === '？' || story.charAt(i) === '…') && str.length >= error_danmu_long) {
                str += story.charAt(i);
                story_arr.push(str);
                str = '';
            }else if(str.length >= max_danmu_long || i === len - 1) {
                str += story.charAt(i);
                story_arr.push(str);
                str = '';
            }else if(story.charAt(i) === ' ' && i < len - 1 && story.charAt(i + 1) === ' ') {
                continue;
            }else {
                str += story.charAt(i);
            }
        }
    }

    function multiple() {
        let len = story.length;
        let str = '';
        let flag = true;
        for (let i = 0; i < len; i++){
            if((story.charAt(i) === '\n') && str.length){
                story_arr.push(str);
                str = '';
            }else if(str.length > 43){
                continue;
            }else{
                str += story.charAt(i);
                if(i === len - 1){
                    story_arr.push(str);
                }
            }
        }
    }

})();