// ==UserScript==
// @name         Arcturus Player Count
// @namespace    Muller_APC
// @version      0.4
// @description  Counts how many times you've played against a certain opponent
// @author       Muller
// @match        http://arcturus.su/tenhou/ranking/ranking.pl?*
// @homepage     http://osamuko.com
// @grant        none
// ==/UserScript==
// I take no responsibility for any XSS exploitations, use at your own risk

var MINIMUM_THRESHOLD = 2; // adjust as desired
var IGNORE_NONAME = true; // true or false

// http://stackoverflow.com/a/901144
function getParameterByName(name, url) {
    if (!url) url = window.location.href;
    name = name.replace(/[\[\]]/g, "\\$&");
    var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
        results = regex.exec(url);
    if (!results) return null;
    if (!results[2]) return '';
    return decodeURIComponent(results[2].replace(/\+/g, " "));
}

(function() {
    'use strict';
    var records = document.getElementById('records').innerHTML.split("<br>");
    var playerrecords = [];
    var players = [];
    var i, j = 0;
    for (i = 0; i < records.length; i++) {
        var record = records[i].split("|");
        for (j = 0; j < record.length; j++) {
            if ((j + 1) % 9 === 0) {
                playerrecords.push(record[j]);
            }
        }
    }
    for (i = 0; i < playerrecords.length; i++) {
        var currentplayers = playerrecords[i].split(".0)");
        for (j = 0; j < currentplayers.length; j++) {
            if (currentplayers[j].length > 0) {
                var currentplayer = currentplayers[j].trim();
                var index = currentplayer.indexOf("(+");
                if (index < 0)
                    index = currentplayer.indexOf("(-");
                currentplayer = currentplayer.substr(0, index);
                players.push(currentplayer);
            }
        }
    }
    var count = {};
    for(i = 0; i < players.length; i++) {
        if(!count[players[i]])
            count[players[i]] = 0;
        count[players[i]]++;
    }
    var sorted = [];
    for (var player in count) {
        sorted.push([player, count[player]]);
        sorted.sort(
            function(a, b) {
                return b[1] - a[1];
            }
        );
    }
    for (i = 0; i < sorted.length; i++) {
        var times = sorted[i][1];
        if (times < MINIMUM_THRESHOLD)
            break;
        var name = sorted[i][0];
        if (name == getParameterByName("name"))
            continue;
        else if (IGNORE_NONAME && name == "NoName")
            continue;
        console.log(name + ": " + times);
    }
    return "END";
})();