"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[o.to] ? client.chans[o.to].users[o.from] : undefined;
	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":
			/*if (level < getLevel("admin")) {
				client.say(o.to, o.from + ": dein level: " + userLevelNames[level] + ", benötigtes level: admin");
				return true;
			}*/

			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(", "));
					/*var vid = rows[0];
					if (!vid.id) {
						client.say(to, from + ": konnte kein video finden D:");
						con.release();
						return;
					}
					var txt = [];
					if (vid.deleted_at) txt.push("\x02gelöscht\x0f");
					if (webm) txt.push("Link: \x02https://w0bm.com/" + vid.id + "\x0f");
					["interpret", "songtitle", "category", "username", "comments"].forEach((v, i) => {
						if (vid[v]) {
							txt.push(
								["Interpret", "Titel", "Kategorie", "Uploader", "Kommentare"][i] + ": "
								+"\x02" + vid[v] + "\x0f");
						}
					});

					client.say(to, txt.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;
	}
	return false;
};

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