const express = require('express');
const database = require('./database');
const cardGen = require('./cardGen');
const app = express();
const http = require('http').Server(app);
const port = process.env.PORT || 3000;

const io = require('socket.io')(http);
// util is what nodejs uses for console.log, but has a depth of 2 set
// so console.logs show [Array]/[Object] instead of useful info.
// This can be overridden console.log(util.inspect(LOGDATA, true, 4, true))
// 4 being new depth, true (last one) is to show colours
const util = require('util')

app.use(express.static(__dirname + '/public'));

http.listen(port, () => console.log('listening on port ' + port));
database.connect();

io.on('connection', onConnection);

// Variables
let	numRooms = 0;
let	numRoomsToPreGen = 1;
const	maxRooms = 3;
const	maxPlayersPerRoom = 2;
const	maxSpectatorsPerRoom = 0;

// All the room
//let data = []; // Normal array
let data = {}; // Object array (this one for returning to player, and JSON stringify while keeping named ids)
let roomData = {};
for (let roomId = 1; roomId <= numRoomsToPreGen; roomId++) {
	// Never have more rooms than max rooms!!!
	if(numRooms > maxRooms){
		break;
	}

	createRoom(roomId);
}

// For testing
cardGen.requestDeck();

function requestDeckStart(socket){
	// For future:
	// Don't try to use promises between server/client
	// It's painful and doesn't appear to work. Instead, let client have a loading
	// screen, or wait for a while before doing something that requires server data
	// like loading the decks... Then have the socket.on clientside trigger
	// whatever functions, and stuff needs to happen
	// Wasted so much time trying to do async server-client stuff. Don't bother
	response = {success: false, message: 'Failed requestDeckStart() server.js'};
	cardGen.requestDeck().then(data => {
		response.success = true;
		response.message = data;
		io.to(socket.id).emit('responseGetDeck', response);
			
	})
	.catch(err => {
		response.message = err;
		io.to(socket.id).emit('responseGetDeck', err);
	});
}
// End For testing

function onConnection(socket){

	console.log('+ User connected');
	console.log('');

	socket.on('requestGetCards', function(deckId, playerId) {
		requestGetCards(socket, deckId, playerId);
	});
	// New testing fella (working afaik)
	// TODO: request specific deckId/playerId (and multiples, i.e. get 6 decks at same
	// time, based on deckId/playerId combo. Maybe pass as array [deckId, playerId],[deck
	socket.on('requestDeck', function() {
		requestDeckStart(socket);
	});
	socket.on("exampleEvent", (data) => {
		io.emit("exampleEvent", "hello from server");
	});

	socket.on('requestRooms', function(filter) {
		requestRooms(socket, filter);
	});

	socket.on('requestJoinRoom', function(playerName, roomId) {
		requestJoinRoom(socket, playerName, roomId);
	});

	socket.on('requestCreateRoom', function(playerName) {
		requestCreateRoom(socket, playerName);
	});

}

function requestRooms(socket, filter){
	console.log('+ requestRooms recieved');
	console.log('- filter: '+filter);

	let response = getRooms(filter, dump = true);
        io.to(socket.id).emit('returnRooms', response);

	console.log('');
}

function getRooms(filter = 'all', dump = false){
	console.log('+ getRooms');
	let response = {
		random:		'randomStuff',
		roomData:	roomData,
	};

	if(dump){
		console.log(response);
		console.log('');
	}

	return response;
}

function requestCreateRoom(socket, playerName){
	console.log('+ createRoom recieved');
	console.log('- requested by: '+playerName);

	response = createRoom(roomId = false, dump = true);
	io.to(socket.id).emit('returnCreateRoom', response);

	if(response.success){
		let response = getRooms(filter = 'all', dump = true);
		io.to(socket.id).emit('returnRooms', response);
	}

	console.log('');
}

function createRoom(roomId = false, dump = true){
	let roomName = false;
	if(roomId == false){
		roomId = numRooms + 1;
	}
	console.log(roomId);

	let response = {	
		success:	false,
		message:	'No idea bossman'
	};

	// Max room limit reached
	console.log(numRooms);
	console.log(maxRooms);
	if(numRooms >= maxRooms){
		console.log('- Room limit reached');

		response = {	
			success:	false,
			message:	'No space '+numRooms+' out of '+maxRooms+' created.'
		};

	// Create room
	}else{
		console.log('- Creating room')
		let room = {};
		room['id'] = roomId;
		room['name'] = 'Room:'+room['id'];
		roomName = room['name'];
		room['password'] = '';
		room['timeout'] = {};
		room['timeout']['s'] = 10;
		room['people'] = 0;

		//room['deck'] = [];
		//room['turn'] = 0;

		// Removed players for now, players may be seperate
		// and back-end only with an assoc. to current room
		
		//let players = {};
		//for (let j = 0; j < maxPlayersPerRoom; j++) {
			//let p = {};
			//p['id'] = 0;
			//p['name'] = "";
			//p['hand'] = {};
			//players[j] = p;
		//}

		//room['players'] = players;
		roomData[roomId] = room;
		numRooms = numRooms + 1;

		response = {	
			success:	true,
			message:	'Room Created: '+roomName,
		};
	}

	if(dump){
		console.log(response);
		console.log('');
	}
	return response;
}

// TODO: break into requestJoinRoom, and JoinRoom?
// Maybe not needed here? As won't be done via backend?
function requestJoinRoom(socket, playerName, roomId){

	console.log('+ requestJoinRoom recieved');
	socket.playerName = playerName;

	for (let i = 1; i <= numRooms; i++) {
		let name = 'Room_' + i;
		let people = roomData[i]['people'];

		console.log('- people: '+people);
		console.log('- maxPlayersPerRoom: '+maxPlayersPerRoom);

		if (true || people < maxPlayersPerRoom) {

			people = roomData[i]['people'] += 1;
			socket.join(name);
			console.log('>> User ' + socket.playerName +
			' connected on ' + name + ' (' + (people) + '/' + maxPlayersPerRoom + ')');

			io.to(socket.id).emit('responseJoinRoom', name);

			if (people >= maxPlayersPerRoom) {
				console.log('- starting game');
				//startGame(name);
			}

			return;

		}
	}

	io.to(socket.id).emit('responseRoom', 'error');
	console.log('>> Rooms exceeded');

}

// Change to Decks, or 'getPlayerDecks' for the game
// Could also be a specific deck if player clicks into one? Although maybe when entering
// decks they get all their decks (maybe just id actually) then load from there?
function requestGetCards(socket, deckId, playerId){
	console.log(deckId);
	console.log(playerId);
	let response = {'success':false, 'message':'Nothing happened'};
	response.success = true;

	// Await promise, once it's done get the data, if errors send err
	database.getCardsFromDeck(deckId, playerId).then(data => {
		console.log(data);
		response.message = data;
		io.to(socket.id).emit('responseGetCards', response);
	})
	.catch(err => {
		response.message = err;
		io.to(socket.id).emit('responseGetCards', err);
	})
}