/* ----------------------------------------------------------------------------    

 Question Server
 GitLab: <https://gitlab.com/YourFriendlyNeighborhoodDealer/question-node-server>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.

 ------------------------------------------------------------------------- */

var express = require('express');
var bodyParser = require('body-parser');
var busboy = require('connect-busboy');
var fs = require('fs');
var app = express();

var logger = require('./logger.js');
var utils = require('./utils.js');
var actions = require('./actions.js');
var stat = require('./stat.js');

var bodyParser = require('body-parser');

const recivedFiles = "public/recivedfiles";
const publicFile = "public/data/public";
const staticFile = "public/data/static";
const countFile = "public/data/count";
const manFile = "public/man.html";
const simpOutFile = "public/simplified";
const inputFile = "stats/inputs";
const msgFile = "stats/msgs";
const logFile = "stats/logs";
const port = 8080;

var highlights = ["public", "static", "manual", "isgetting", "postfeedback",
	"postquestions"
];

try {
	var stdin = process.openStdin();
	stdin.addListener("data", function(d) {
		var input = d.toString().trim();

		if (input == "hello")
			console.log("hello, messages: \n" + newMessages);
		if (input == "clear" || input == "c")
			console.clear();

	});
} catch (e) {
	console.log("Failed to open STDIN");
	console.log(e);
}

var newMessages = "";

app.set('view engine', 'ejs');
app.use(function(req, res, next) {
	var ip = req.headers['cf-connecting-ip'] || req.connection.remoteAddress;
	if (req.headers['cf-connecting-ip']) {
		next();
	} else {
		res.status(404);
		res.end();
		logger.Log("[BLOCK]: " + req.connection.remoteAddress + " blocked, " + req.url, logger.GetColor("redbg"));
	}
});
app.use(function(req, res, next) {
	res.on('finish', function() {
		if (res.statusCode != 404 && req.connection.remoteAddress != "::1")
			Log(req);
		else
			Log(req, true);
	});
	stat.Inc(req.url);
	next();
});
app.use(express.static('public'));
app.use(busboy({
	limits: {
		fileSize: 10 * 1024 * 1024
	}
}));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
	limit: '5mb',
	extended: true
}));
app.use(bodyParser.json({
	limit: '5mb'
}));

app.get('/', function(req, res) {
	res.render('main', {
		pdata: utils.ReadFile(publicFile),
		sdata: utils.ReadFile(staticFile)
	});
	res.end();
});

app.get('/manual', function(req, res) {
	res.write(utils.ReadFile(manFile));
	res.end();
});

app.get('/public', function(req, res) {
	res.write(utils.ReadFile(publicFile));
	res.end();
});

app.get('/static', function(req, res) {
	res.write(utils.ReadFile(staticFile));
	res.end();
});

app.post('/postquestions', function(req, res) {
	//res.redirect('back');
	var log = "Questions posted! ";
	if (req.body.data_field == undefined) {
		res.render('submitted', {
			log: [],
			msg: "Nincsen beküldött adat!"
		});
		log += "Sent data is undefined! ";

	} else {
		try {
			utils.AppendToFile("\n" + logger.GetDateString() + "\n" + req.body.data_field, inputFile);
		} catch (e) {
			console.log(e);
		}
		var r = actions.CheckData(req.body.data_field);
		if (r.count > 0) {
			var c = utils.ReadFile(countFile);
			if (parseInt(c) >= r.count) {
				res.render('submitted', {
					log: r.log,
					msg: "Amit beküldtél kevesebb, vagy ugyanannyi kérdést tartalmaz! Az új kérdéseidet az eredeti végére másold! " +
						"Új: " + r.count + " vs régi: " + c
				});
				log += "Sent data contains less questions: " + r.count + ", ";

			} else {
				res.render('submitted', {
					log: r.log,
					msg: "Sikeres frissítés! + " + (r.count - parseInt(c)) +
						" új kérdés beküldve. néhány üzenet:"
				});
				utils.WriteFile(req.body.data_field, publicFile);
				utils.WriteFile(r.count.toString(), countFile);
				utils.WriteBackup();
				log += "Wrote to file. ";
			}
			log += "Prev count : " + parseInt(c) + ", ";

		} else {
			res.render('submitted', {
				log: r.log,
				msg: "A fordító nem bírta értelmezni az elküldött adatokat! Ellenőrizd a kimenetet, és az elküldött adatokat."
			});
			log += "Could't parse data! ";
		}
		log += "NLOAD result: " + r.count;
	}
	logger.Log(log, logger.GetColor("blue"));
});

app.get('/postquestions', function(req, res) {
	res.render('main', {
		pdata: utils.ReadFile(publicFile),
		sdata: utils.ReadFile(staticFile)
	});
});

app.post('/postfeedback', function(req, res) {
	res.redirect('back');
	newMessages += "\n" + req.body.message_field;
	logger.Log("[UMSG]: " + req.body.message_field, logger.GetColor("bluebg"), true);
	utils.AppendToFile(logger.GetDateString() + ": " + req.body.message_field, msgFile);
});

app.get('/postfeedback', function(req, res) {
	res.render('main', {
		pdata: utils.ReadFile(publicFile),
		sdata: utils.ReadFile(staticFile)
	});
});

app.post('/isAdding', function(req, res) {
	res.end('OK');
	actions.ProcessIncomingRequest(req.body.datatoadd);
	utils.WriteBackup();
});

app.get('/sanityCheck', function(req, res) {
	res.end('Hello guys');
});

app.route('/badtestsender').post(function(req, res, next) {
	var fstream;
	req.pipe(req.busboy);
	req.busboy.on('file', function(fieldname, file, filename) {
		logger.Log("[UPL]: Uploading: " + filename, logger.GetColor("blue"));

		fstream = fs.createWriteStream(recivedFiles + "/" + filename + " | " + Date().toString());
		file.pipe(fstream);
		fstream.on('close', function() {
			logger.Log("[UPL]: Upload Finished of " + filename, logger.GetColor("blue"));
			res.render("uploaded");
		});
		fstream.on('error', function(err) {
			console.log("ERROR:" + err);
			res.end("file uploaded");
		});
	});
});

app.get('/sanityCheck', function(req, res) {
	res.end('Uploaded :) go back now');
});

app.get('*', function(req, res) {
	res.render('404');
	res.status(404);
	utils.AppendToFile(logger.GetDateString() + ": " + "404 GET", logFile);
});

app.post('*', function(req, res) {
	res.status(404);
	utils.AppendToFile(logger.GetDateString() + ": " + "404 POST", logFile);
	Log(req, true);
});

stat.Load();
app.listen(port);
logger.Log("[START]: Server listening on port " + port + "...");

function Log(req, toFile) {
	try {
		var ip = req.headers['cf-connecting-ip'] || req.connection.remoteAddress;
		var logEntry = "[RSND]: " + ip + ", " + req.headers['user-agent'] +
			" " + req.method + " " + req.url;
		var color = logger.GetColor("green");
		for (var i = 0; i < highlights.length; i++)
			if (req.url.toLowerCase().includes(highlights[i])) {
				color = logger.GetColor("blue");
				break;
			}
		if (req.url.toLowerCase().includes("isadding"))
			color = logger.GetColor("yellow");
		if (!toFile) {
			logger.Log(logEntry, color);
		} else {
			utils.AppendToFile(logger.GetDateString() + ": " + logEntry + "\n\t" + JSON.stringify(req.headers) +
				"\n\t" + JSON.stringify(req
					.body) + "\n", logFile);
		}

	} catch (e) {
		logger.Log("Error at logging lol", logger.GetColor("redbg"), true);
	}
}