// ==UserScript==
// @name         Bilibili B站开播提醒
// @namespace    http://tampermonkey.net/
// @version      0.6
// @description  请手动打开我的关注页面并放置在后台(https://link.bilibili.com/p/center/) 有主播开播时自动发送系统级浏览器提醒
// @author       P
// @include      https://link.bilibili.com/p/center/*
// @connect      bilibili.com
// @grant GM_xmlhttpRequest
// @grant GM_openInTab
// @grant GM_notification
// @downloadURL none
// ==/UserScript==
console.log("开播提醒init")
var baseURL = "https://live.bilibili.com/"
var save={}
var all = 0
shim_GM_notification ()

//Source: https://blog.csdn.net/dingwen_888/article/details/81977352
function difference(setA, setB) {
    var _difference = new Set(setA);
    for (var elem of setB) {
        _difference.delete(elem);
    }
    return _difference;
}
/*--- Cross-browser Shim code follows:
Source: https://stackoverflow.com/questions/36779883/userscript-notifications-work-on-chrome-but-not-firefox
*/
function shim_GM_notification () {
    if (typeof GM_notification === "function") {
        return;
    }
    window.GM_notification = function (ntcOptions) {
        checkPermission ();

        function checkPermission () {
            if (Notification.permission === "granted") {
                fireNotice ();
            }
            else if (Notification.permission === "denied") {
                console.log ("User has denied notifications for this page/site!");
                return;
            }
            else {
                Notification.requestPermission ( function (permission) {
                    console.log ("New permission: ", permission);
                    checkPermission ();
                } );
            }
        }

        function fireNotice () {
            if ( ! ntcOptions.title) {
                console.log ("Title is required for notification");
                return;
            }
            if (ntcOptions.text && !ntcOptions.body) {
                ntcOptions.body = ntcOptions.text;
            }
            var ntfctn = new Notification (ntcOptions.title, ntcOptions);

            if (ntcOptions.onclick) {
                ntfctn.onclick = ntcOptions.onclick;
            }
            if (ntcOptions.timeout) {
                setTimeout ( function() {
                    ntfctn.close ();
                }, ntcOptions.timeout);
            }
        }
    }
}

function newSetFromDict(d){
    var mem=new Set()
    for (var i in d){
        mem.add(i)
    }
    return mem
}
const ON=1
function append_notify(mem,res,i){
    var status;
    var done=0
    var uid
    if(mem===null){
        mem=newSetFromDict(save)
        //console.log(mem) //DEBUG
    }
    for(var each in res.data.list){
        //console.log(res.data.list[each])
        uid=res.data.list[each]["roomid"]
        status=res.data.list[each]["live_status"]
        if(status!=ON){
            done=1
            break
        }
        if (!(uid in save)){
            save[uid] = status
            continue //DEBUG
        }else if (save[uid]==status){
            continue
        }
        save[uid]=status

        mem.add(uid)
        var notificationDetails = function(){
            var tempUrl = uid
            return {
                text:       res.data.list[each]["title"],
                title:      res.data.list[each]["uname"]+'开播了',
                image:      res.data.list[each]["face"],
                timeout:    60000,
                onclick:    function () {
                    console.log ("Notice clicked.");
                    GM_openInTab(baseURL+tempUrl,{active: true, insert: true})
                    //window.focus ();
                }
            }
        }()
        GM_notification (notificationDetails)

    }
    //Rem
    //console.log(done)
    if(done==0){
        check(i+1,mem)
    }else{
        for (var left in difference(newSetFromDict(save),mem)){save[left]=2}
    }
}

function check(i=1,mem=null){
    console.log ('Interval Check Running.');
    GM_xmlhttpRequest({
        method: 'GET',
        url: `https://api.live.bilibili.com/i/api/following?page=`+i+`&pageSize=9`,
        onload: response => {
            var res=JSON.parse(response.responseText)
            append_notify(mem,res,i)
        }
    });

}

check()
function notifyTitle(s){
    GM_notification ({
        text:       "嗷呜",
        title:      s,
        timeout:    3000,
        image: "https://s1.hdslb.com/bfs/static/blive/live-web-center/static/img/progress-tv.e11a9bf.gif"
    })
}
notifyTitle('Bilibili开播提醒启动了')
//window.onbeforeunload = function(event){notifyTitle('Bilibili开播提醒已退出')}
window.onunload = function(event) {notifyTitle('Bilibili开播提醒已退出')}
window.setInterval(check,10000)