// ==UserScript==
// @name         NGA Missing Floor Detector
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  自动检测NGA楼层缺失
// @author       东云曦月
// @match        https://bbs.nga.cn/read.php*
// @icon         https://img4.nga.178.com/ngabbs/post/smile/pg04.png
// @grant        none
// @license      MIT
// ==/UserScript==
(function() {
'use strict';
var body = document.body.innerHTML
var patt = /a name=.l\d+./g
var floors = body.match(patt)
if (floors != null){
//alert('楼层数：' + floors.length)
var app = new Array()
var min = 10000000;
for (var i = 0; i < floors.length; i++){
//alert(floors[i])
var num_str = floors[i].match(/\d+/g)
//alert(num_str)
var index = parseInt(num_str)
if (app.length == 0 || app.indexOf(index) == -1){
app.push(index)
if (index < min){
min = index;
}
//alert('!')
}
}
//alert(app)
min = min / 20 * 20
var missing = new Array()
for (i = min; i < min + 20; i++){
if (app.indexOf(i) == -1){
missing.push(i)
}
}
if (missing.length == 0){
alert('无缺失楼层')
}
else{
alert('缺失以下楼层：' + missing)
}
}
else {
alert('没有匹配，请尝试刷新')
}
})();