"use strict";

let crypto = require("crypto");
let VM = require('vm2').VM;

let sbhead = "\"use strict\";const mett=9000,belst=Math.random()*mett|0;";
    sbhead += Object.getOwnPropertyNames(Math).map(function(v){return "const " + v + "=Math." + v + ";"}).join("");

let handleChatCommands = function (irc, db) {
    this.irc = irc;
    this.db = db;
};

let p = handleChatCommands.prototype;

const userLevels = ["","+","%","@","&","~"];
const userLevelNames = ["user", "voiced", "halfop", "op", "admin", "owner"];
const getLevel = name => userLevelNames.indexOf(name);
const exec = require("child_process").exec;
const alphanoise = [8,20,10,14,12,11,26,16,4,21,22,13,24,6,5,15,2,23,7,19,18,25,9,3,17,1];

p.run = function (o) {
    let client = this.irc.client;
    let db = this.db;
    let level = client.chans["#w0bm"] ? client.chans["#w0bm"].users[o.from] : undefined;
    level = level !== undefined ? level.split("").map(x=>userLevels.indexOf(x)).sort().pop() : -1;
    if (level === null || level === undefined) level = -1;
    switch(o.cmd) {
        case ".adhs":
            let fuckyoujs = [...(o.args || o.from).toLowerCase()];
            fuckyoujs = fuckyoujs.filter(c => /[a-z]/.test(c));
            fuckyoujs = fuckyoujs.map((c, i) => {
                return alphanoise[((c.charCodeAt() -97) * (i+1) * 107) %26] /26;
            }).reduce((a,b)=>a+b) %1;
            client.say(o.to, (o.args || o.from) + " has " + (fuckyoujs * 100).toFixed(2) + "% adhs");
            return true;
        case ".level":
            client.say(o.to, o.from + " your level: " + userLevelNames[level]);
            return true;
        case ".reboot":
            if (level < getLevel("admin")) {
                client.say(o.to, o.from + " go kill yourself");
                break;
            }
            client.say(o.to, "kthx bai");
            setTimeout(process.exit, 100);
            return true;
        /*case ".reg":
            if (level < getLevel("admin")) {
                client.say(o.to, o.from + ": your level: " + userLevelNames[level] + ", needed level: admin");
                return true;
            }
            if (!~["open", "close"].indexOf(o.args)) {
                client.say(o.to, "momentane befehle: open und close");
                return true;
            }
            client.say(o.to, "Your word is my command");
            exec("/bin/bash /home/sirx/web/w0bm.com/resources/views/"+o.args+".sh", (err, sout, serr)=>{
                client.say(o.to, "Registration successfully " + (o.args == "open" ? "opened you can now register your account at https://w0bm.com/register" : "closed"));
            });
            break;*/

        case ".reg":
            client.say(o.to, "User limit reached");
            return true;
        case ".status":
            db.getConnection((err, con) => {
                if (err) {
                    client.say(o.to, "sorry.. datenbank is kapott D: nixc jkhsjdhjs Flummi");
                    console.error(err);
                    return;
                }
                con.query("select disabled, deleted_at, banend, banreason, verified from users where username like ?", o.args || o.from, (err, rows, fields) => {
                    if (err) {
                        client.say(o.to, "ich bin zu doof zum coden.. hier hat sich ein fehler eingeschlichen D:");
                        con.release();
                        return;
                    }
                    if (rows.length == 0) {
                        client.say(o.to, "konnte keinen benutzer mit dem namen finden D:");
                        con.release();
                        return;
                    }
                    if (rows.length > 1) {
                        client.say(o.to, "fick dich. hör auf wildcards zu nutzen… oder… wir haben ein datenbank problem…");
                        con.release();
                        return;
                    }
                    const row = rows[0];
                    const stati = [];
                    if (row.disabled) stati.push("deaktiviert");
                    if (!row.disabled) stati.push("aktiviert");
                    if (!row.verified) stati.push("nicht verifiziert");
                    if (row.banend) stati.push("gebannt mit grund: " + row.banreason + ", bis: " + row.banend);
                    if (row.deleted_at) stati.push("gelöscht seit: " + row.deleted_at);

                    client.say(o.to, (o.args || o.from) + " ist: " + stati.join(", "));
                    con.release();
                });
            });

            return true;
        case "md5sum":
        case "sha1sum":
        case "sha256sum":
        case "sha512sum":
            o.cmd = o.cmd.substr(0, o.cmd.length -3);
        case "md5":
        case "sha1":
        case "sha256":
        case "sha512":
            let crypt = crypto.createHash(o.cmd);
            crypt.update(o.args);
            client.say(o.to, "teh " + o.cmd + " sum iz: " + crypt.digest("hex"));
            return true;

        case "js":
            let s = new VM({timeout: 1000, sandbox: {}});
            let text;
            try {
                const out = s.run(sbhead + o.args + "+\"\"");
                text = out.replace(/[\r\n\t]/g, " ");
            }
            catch(e) {
                text = e.toString(); 
            }
            client.say(o.to, o.from + " it returned: " + (text.length > 400 ? "fuck you" : text));
            return true;

        case "throw":
            if (o.args != "a dice") break;
            client.say(o.to, o.from + ": the magic dice shows " + ((Math.random()*6|0)+1) + " eyes.");
            return true;

        case ".choose":
        case "choose:":
        case "choice:":
            let choices = o.args.split(",").map((str)=>str.trim());
            if (choices.length < 2) {
                client.say(o.to, "fuck you " + o.from + "!");
                return true;
            };
            let choice = ~choices.indexOf("w0bm") ? "w0bm of course!" : choices[Math.random() * choices.length | 0];
            client.say(o.to, o.from + ": i'd choose: " + choice);
            return true;

        case "b2o":
        case "b2d":
        case "b2h":
        case "o2b":
        case "o2d":
        case "o2h":
        case "d2b":
        case "d2o":
        case "d2h":
        case "h2b":
        case "h2o":
        case "h2d":
            if ({b:/[^01]/,o:/[^0-7]/,d:/[^\d]/,h:/[^\da-fA-F]/}[o.cmd[0]].test(o.args)) return false;
            client.say(o.to, o.from + ": " + parseInt(o.args, {b:2,o:8,d:10,h:16}[o.cmd[0]]).toString({b:2,o:8,d:10,h:16}[o.cmd[2]]));
            return true;
        case ".guuchan":
        case ".vizon":
        case ".lottery":
            let values = new Array(29).fill().map((v,i)=>1+i);
            let values_choices = new Array(6).fill().map(()=>values.splice(Math.random()*values.length|0,1)).sort((x,y)=>x-y).join(" ");
            client.say(o.to, "/notice guuchan !bet " + values_choices);
            return true;
        case ".d":
            client.say(o.to, o.from + ": the magic dice shows " + ((Math.random()*6|0)+1) + " eyes.");
            return true;
    }
    return false;
};

module.exports = function (irc, db) {
    let hcc = new handleChatCommands(irc, db);
    return function (o) {
        hcc.run(o);
    }
};