// ==UserScript==
// @name         斗鱼自动弹幕
// @namespace    http://tampermonkey.net/
// @version      0.1.0
// @description  自动发斗鱼弹幕
// @author       Lang
// @match        https://www.douyu.com/*
// @match        http://www.douyu.com/*
// @grant        none

// @downloadURL none
// ==/UserScript==


/*jshint multistr: true */
$("body").append("\
<div id='robot' style='position: absolute; top: 780px; left: 740px; z-index: 900; display: block; background: #65c294; padding:5px;'> \
弹幕间隔：<input id='robot-interval' placeholder='秒数' value='5' style='display:inline-block;width: 30px'/>秒<br />\
弹幕内容(多条用|或换行分隔):<br/>\
<textarea id='robot-danmu' rows='5' cols='30'>6666|666666|6666666666|6666666666666|66666</textarea><br />\
<div id='robot-play' style='display: inline-block; margin-top: 5px;padding:5px; border: 1px solid gray; float:right'>Play</div>\
</div>");

// 实现可拖动
var ismousedown = false;
var dialogleft,dialogtop;
var downX,downY;
dialog = $("#robot");
dialogleft = parseInt(dialog.css("left"));
dialogtop = parseInt(dialog.css("top"));
dialog.mousedown(function(e){
    ismousedown = true;
    downX = e.clientX;
    downY = e.clientY;
});
document.onmousemove = function(e){
    if(ismousedown){
        dialog.css("top", e.clientY - downY + dialogtop + "px");
        dialog.css("left", e.clientX - downX + dialogleft + "px");
    }
};
/*松开鼠标时要重新计算当前窗口的位置*/
document.onmouseup = function(){
    dialogleft = parseInt(dialog.css("left"));
    dialogtop = parseInt(dialog.css("top"));
    ismousedown = false;
};
//console.log($("#js-chat-speak").offset().top);
//dialog.css("top", $("#js-chat-speak").offset().top +"px");
//dialog.css("left", $("#js-chat-speak").offset().left + "px");


msg0 = ["666","66666","66666666", "666666666666", "666666666666666666666666666"];
function Robot() {}
Robot.prototype = {
    constructor: Robot,
    msg: msg0,
    lastText: '',
    suffix: ["!","!!","!!!", " @@", " :)", " T_T", " ##", " **"],
    flag: 0,
    interval: 5000,
    send: function(text) {
        $("#js-send-msg > textarea.cs-textarea").val(text);
        $("#js-send-msg > .b-btn").click();
        console.debug(text);
    },
    getText: function() {
        if(this.msg.length === 1) {
            return this.msg[0] + this.suffix[Math.floor(Math.random() * this.suffix.length)];
        }
        return this.msg[Math.floor(Math.random() * this.msg.length)];
    },
    start: function() {
        var that = this;
        this.stop();
        text = this.getText();
        while(text == this.lastText) {
            text = this.getText();
        }
        // 不能发送，冷却中
        if($("#js-send-msg > .b-btn").hasClass('b-btn-gray')) {
            nextTime = parseInt($("#js-send-msg > .b-btn").text());
            if(isNaN(nextTime)) {
                this.flag = setTimeout(function(){that.start();}, nextTime * 1000);
                return;
            }
        }
        this.send(text);
        this.lastText = text;
        this.flag = setTimeout(function(){that.start();}, this.interval);
    },
    stop: function() {
        clearTimeout(this.flag);
    },
    setMessage: function(arr) {
        if(!(arr instanceof Array)) {
            console.error("setMessage: arr should be an array!");
            return;
        }
        this.msg = arr;
        console.log("setMessage " + arr);
        if(this.msg.length === 0) {
            this.msg = msg0;
        }
    },
    setInterval: function(seconds) {
        sec = parseInt(seconds);
        console.log('set interval to ' + seconds);
        if((!isNaN(sec)) && sec > 0) {
            this.interval = sec * 1000;
        } else {
            console.warn("set interval " + seconds + " failed.");
        }
    }
};
robot = new Robot();
window.robot = robot;

$("#robot-play").click(function(){
    if($("#robot-play").text() != "Stop") {
        $("#robot-play").text("Stop");
        robot.setInterval($('#robot-interval').val());
        robot.setMessage($('#robot-danmu').val().split(/[\n|]/).filter(function(s){return s && s.trim();}));
        robot.start();
    } else {
        robot.stop();
        $("#robot-play").text("Play");
    }
});

console.log("斗鱼自动弹幕已准备.");