// rozstawienie stołów po wirtualnej sali
var Tables = function(viewport, quantity) {

   var that = this;
   that.quantity = quantity;
   that.viewport = viewport;
   that.dim = 0;

   that.tables = [];

   that.singleDiv = jQuery('<div>').css({position: 'absolute'}).addClass('table'); // reprezentacja pojedynczego stołu
   that.direction = undefined;
   that.setDirection = function(direction) { // ustawia orientację sali/ustawienie stołów
		var alignment = direction.split('-'); // dzielimy kierunek na składową horyzontalną i wertykalną
		var rows = 2; // stoły stoją w dwóch rzędach
		var cols = parseInt(Math.ceil(that.quantity / 2)); // i w tylu kolumnach, ilu trzeba
		if (alignment[0] == 'top' || alignment[0] == 'bottom') { // chyba, że stoją w drugą stronę
			rows = cols; // to wtedy w tylu rzędach, ilu kolumnach i w w tylu kolumnach, ile 2.
			cols = 2;
		}
		var width = that.viewport.width / cols; // wyznaczamy rozmiar obszaru zajmowanego przez pojedynczy stół
		var height = that.viewport.height / rows;
		that.dim = Math.min(width, height) * 0.5; // stół zajmuje dłuższym bokiem (mimo, że jest kwadratowy, jeden bok jest względnie dłuższy wobec w/w obszaru) połowę przeznaczonego obszaru
		that.singleDiv.css({height: that.dim, width: that.dim});
		var positions = [];
		for (var i = 0; i < that.quantity; i++) { // pozycjonujemy kolejne stoliki (w przestrzeni (0,0) - (1,1))
			var position = { top: 0, left: 0 };
			switch (alignment[1]) {
			case 'straight': // w dwóch rzędach/kolumnach
				position.top = parseInt(Math.floor(2 * i / that.quantity));
				position.left = i % parseInt((that.quantity+1) / 2);
			   break;
			case 'uturn': // w dwóch rzędach/kolumnach, ale zakręcają
				position.top = parseInt(Math.floor(2 * i / that.quantity));
				position.left = Math.min(i, (that.quantity-1-i));
			   break;
			case 'snake': // wężykiem
				position.top = i % 4;
				position.top = Math.min(position.top, 3 - position.top);
				position.left = parseInt(Math.floor(i / 2));
			   break;
			}
			positions[i] = position;
		}
		if (that.quantity % 2) { // nieparzysty stolik wysuwamy na środek, dla wężyka - ostatni, dla pozostałych - środkowy
			var skewed = (alignment[1] == 'snake') ? (that.quantity - 1) : ((that.quantity - 1) / 2);
			positions[skewed].top = 0.5;
		}
		that.tables = [];
		for (var i = 0; i < that.quantity; i++) {
			that.tables[i] = that.singleDiv.clone();
			that.tables[i].text(i+1);
			switch (alignment[0]) {
			case 'left':
				positions[i].left += (width-that.dim)/(width*2);
				positions[i].top += (height-that.dim)/(height*2);
				that.tables[i].css({left: positions[i].left * width,
							           top: positions[i].top * height});
			   break;
			case 'right':
				positions[i].left -= (width-that.dim)/(width*2);
				positions[i].top += (height-that.dim)/(height*2);
				that.tables[i].css({left: (Math.ceil(that.quantity / 2) - positions[i].left - 1) * width,
							           top: positions[i].top * height});
			   break;
			case 'top':
				positions[i].left += (height-that.dim)/(height*2);
				positions[i].top += (width-that.dim)/(width*2);
				that.tables[i].css({top: positions[i].left * height,
							           left: positions[i].top * width});
			   break;
			case 'bottom':
				positions[i].left -= (height-that.dim)/(height*2);
				positions[i].top += (width-that.dim)/(width*2);
				that.tables[i].css({top: (Math.ceil(that.quantity / 2) - positions[i].left - 1) * height,
							           left: positions[i].top * width});
			   break;
			}
		}
   }

   that.getPosition = function(position, size) { // podaje współrzędne pikselowe dla danej pozycji zawodnika (/[0-9]+[WNES]/) lub stołu
		var pos = position.toString().match(/^(\d+)([NEWS]?)$/);
		if (!pos) {
			throw 'Illegal position';
		}
		var tableNo = parseInt(pos[1]);
		if (tableNo > that.tables.length || tableNo < 1) {
			throw 'Table number out of range';
		}
		var offset = { left: parseInt(that.tables[tableNo-1].css('left')),
				         top: parseInt(that.tables[tableNo-1].css('top')) };
		switch (pos[2]) {
		case 'N': // N u góry
			offset.left += that.dim / 2;
			break;
		case 'E': // E po prawej
			offset.left += that.dim;
			offset.top += that.dim / 2;
			break;
		case 'S': // S u dołu
			offset.left += that.dim / 2;
			offset.top += that.dim;
			break;
		case 'W': // W po lewej
			offset.top += that.dim / 2;
			break;
		default: // stół od lewej góry
			offset.top += that.dim / 2;
			offset.left += that.dim / 2;
		}
		if (size) { // jeśli podajemy rozmiar pikselowy stolika, dostajemy korektę na środek stołu
			offset.top -= size/2;
			offset.left -= size/2;
		}
		return offset;
	}

	that.display = function() {
		for (var i = 0; i < that.tables.length; i++) {
			that.viewport.container.append(that.tables[i]);
		}
   }

};

// para.
var Pair = function(startingPosition, number, movement) {
   var that = this;
   that.players = [ startingPosition, startingPosition.replace("N", "S").replace("E", "W") ]; // para składa się z 2 graczy, N gra z S, E gra z W
   that.number = number;
   that.movement = movement;
   that.containers = [];
   that.size = that.movement.tables.dim * 0.3; // para ma rozmiar 30% obszaru stolika. sprawdzić, czy nie gra Klichowicz.
   that.colour = '#'+('00000'+(Math.random()*(1<<24)|0).toString(16)).slice(-6); // para ma jeden kolor, ale losowy
   for (var i = 0; i < 2; i++) {
		that.containers[i] = jQuery('<div>').addClass('player').css({backgroundColor: that.colour, position: 'absolute', lineHeight: that.size+'px', width: that.size, height: that.size, borderRadius: that.size}).text(that.number);
   }

   that.moveTo = function(position) {
		for (var i = 0; i < 2; i++) {
			if (position) { // przesuwamy parę na określoną pozycję
				that.players[i] = position;
				var pos = that.movement.tables.getPosition(position, that.size);
				that.containers[i].animate(pos, 1000);
				position = position.replace('N', 'S').replace('E', 'W');
			}
			else { // albo kończymy turniej i ściągamy ją do rogu
				that.containers[i].animate({left: 0, top: 0}, 1000);
			}
		}
   }

   that.display = function() {
		for (var i = 0; i < 2; i++) {
			movement.viewport.container.append(that.containers[i]);
			that.containers[i].animate(that.movement.tables.getPosition(that.players[i], that.size), 1000); // wypuszczamy zawodników na salę
		}
   }
}

// pudełko rozdaniowe
var Set = function(startingPosition, movement, number) {
   var that = this;
   that.movement = movement;
   that.number = number;
   that.position = startingPosition;
   that.colour = '#'+('00000'+(Math.random()*(1<<24)|0).toString(16)).slice(-6); // losowy kolor
   that.size = that.movement.tables.dim * 0.2;
   that.container = jQuery('<div>').addClass('cards').css({position: 'absolute', width: that.size, height: that.size*1.5, backgroundColor: that.colour, top: that.movement.viewport.height-that.size}).text(that.number);

   that.getPosition = function(position) { // translacja pozycji na pozycję w pikselach
		var pos;
		if (parseInt(position) == pos && position > 0) { // jeśli rozdanie leży na stole, to leży na stole
			pos = that.movement.tables.getPosition(position, that.size);
		}
		else { // jesli nie lezy na stole, leży na zbiornicy
			var after = parseInt(position);
			pos = that.movement.tables.getPosition(after, that.size);
			var afterPos = that.movement.tables.getPosition(after%that.movement.tables.quantity+1, that.size);
			if (after == that.movement.tables.quantity) { // zbiornica na końcu sali
				pos.top = Math.min(Math.max(0, pos.top + (pos.top - afterPos.top) * (position - after)), that.movement.viewport.height - that.size);
				pos.left = Math.min(Math.max(0, pos.left + (pos.left - afterPos.left) * (position - after)), that.movement.viewport.width - that.size);
			}
			else { // zbiornica między stołami
				pos.top = Math.min(Math.max(0, pos.top + (afterPos.top - pos.top) * (position - after)), that.movement.viewport.height - that.size);
				pos.left = Math.min(Math.max(0, pos.left + (afterPos.left - pos.left) * (position - after)), that.movement.viewport.width - that.size);
			}
		}
		pos.top -= that.size * 0.25;
		return pos;
   }

   that.moveTo = function(position) {
		that.position = position;
		if (position) {
			that.container.animate(that.getPosition(position), 1000);
		}
		else {
			that.container.animate({left: 0, top: that.movement.viewport.height - that.size}, 1000); // na koniec turnieju ściągamy rozdania
		}
   }

   that.display = function() {
		that.movement.viewport.container.append(that.container);
		that.moveTo(that.position); // rozdania puszczane na salę
   }
}

// reprezentacja schematu
var Movement = function(viewport, movement, tables, summary) {
   var that = this;
   that.viewport = viewport;
   that.data = movement;
   that.tables = tables;
   that.round = 1;
   that.summary = summary;

   that.pairs = [];
   for (var i = 0; i < tables.quantity * 2; i++) { // rozstawiamy pary z kolejnych pozycji z movements.json
		that.pairs[that.data.positions[i]] = new Pair(parseInt(Math.ceil((i+1)/2)) + ['N','E'][i%2], that.data.positions[i], that);
		that.pairs[that.data.positions[i]].display();
   }

   that.sets = [];
   var lastTable = 0;
   var emptySets = 0;
   for (var i = 0; i < that.data.sets.length; i++) { // kolejne komplety z movements.json
		if (that.data.sets[i]) { // komplet zaczyna na stoliku
			lastTable = that.data.sets[i];
			emptySets = 0;
		}
		else { // komplet zaczyna na zbiornicy
			emptySets++;
			for (var j = i - emptySets + 1; j <= i; j++) {
				that.data.sets[j] = lastTable + 0.25 + 0.5*(j - i + emptySets)/(emptySets+1); // więc jest na wirtualnym stoliku ułamkowym
			}
		}
   }
   for (var i = 0; i < that.data.sets.length; i++) {
		that.sets[i] = new Set(that.data.sets[i], that, i+1);
		that.sets[i].display();
   }

	// krok głównej pętli rotacji
   that.step = function() {
		if (summary) {
			summary.update(that); // aktualizacja tabelki krzyżowej
		}
		if (that.round < that.data.rounds) { // przechodzimy do kolejnej rundy...
			for (var p in that.pairs) {
				var position = that.pairs[p].players[0];
				var ind = that.data.movement.indexOf(position);
				if (ind > -1) { // pary chodzące (obecne w rotacji z movements.json) chodzą
					that.pairs[p].moveTo(that.data.movement[(ind+1)%that.data.movement.length]);
				}
				else { // pozostałe siedzą, ale musimy je najpierw usadzić
					that.pairs[p].moveTo(position);
				}
			}
			that.data.sets.unshift(that.data.sets.pop()); // rotujemy komplety
			for (var s in that.sets) {
				that.sets[s].moveTo(that.data.sets[s]);
			}
			that.round++;
			return true;
		}
		else { // ...albo zwijamy się z sali
			for (var p in that.pairs) {
				that.pairs[p].moveTo();
			}
			for (var s in that.sets) {
				that.sets[s].moveTo();
			}
			return false;
		}
   }
}

// tabelka krzyżówki
var Summary = function(pairs) {

   var that = this;

   that.pairs = pairs;
   that.table = jQuery('<table>').addClass('summary');
	// generujemy tabelką z pustymi komórkami, ew. nagłówkami
   for (var i = 0; i <= that.pairs; i++) {
		var row = jQuery('<tr>');
		for (var j = 0; j <= that.pairs; j++) {
			var cell;
			if (i == 0 && j) {
				cell = jQuery('<th>');
				cell.text(j);
			}
			else if (j == 0 && i) {
				cell = jQuery('<th>');
				cell.text(that.pairs - i + 1);
			}
			else {
				cell = jQuery('<td>');
			}
			row.append(cell);
		}
		that.table.append(row);
   }

   that.update = function(movement) {
		for (var pair in movement.pairs) { // kolorujemy pary
			that.table.find('th:contains('+movement.pairs[pair].number+')').css({backgroundColor: movement.pairs[pair].colour});
		}
		var played = [];
		for (var t = 1; t <= movement.tables.quantity; t++) {
			played[t] = { set: movement.data.sets.indexOf(t),
				           pairs: [] };
		}
		// oznaczanie rozdań (kompletów) rozegranych przez pary
		for (var p in movement.pairs) {
			played[parseInt(movement.pairs[p].players[0])].pairs.push(parseInt(p));
		}
		for (var pl in played) {
			played[pl].pairs.sort(function(a,b){return b-a;});
			var cell = that.table.find('tr').eq(movement.tables.quantity*2 + 1 - played[pl].pairs[0]).find('td').eq(played[pl].pairs[1]-1);
			cell.css({backgroundColor: movement.sets[played[pl].set].colour});
			cell.text(pl);
		}
   }

   that.clear = function() {
		that.table.remove();
   }

   that.render = function(where) {
		if (!where) {
			where = jQuery('body');
		}
		jQuery(where).append(that.table);
   }
}

var Viewport = function(width, height) {
   var that = this;
   that.width = width;
   that.height = height;
   that.container = jQuery('<div>').css({height: that.height, width: that.width, position: 'relative'}).addClass('viewport');

   that.clear = function() {
		that.container.html('');
   }

   that.render = function(where) {
		if (!where) {
			where = jQuery('body');
		}
		jQuery(where).append(that.container);
   }
};

var Control = function(movement) {
   var that = this;

   that.movement = movement;

   that.setMovement = function(movement) {
		that.movement = movement;
   }

   that.step = function() {
		if (!that.movement.step()) {
			that.stop();
			that.container.hide();
		};
		if (that.autoplay) {
			that.autoTimeout = setTimeout(that.step, 1500);
		}
   }

   that.autoplay = false;
   that.autoTimeout = undefined;
   that.play = function() {
		that.autoplay = true;
		that.step();
		that.playButton.hide();
		that.stopButton.show();
		that.stepButton.hide();
   }

   that.stop = function() {
		that.autoplay = false;
		clearTimeout(that.autoTimeout);
		that.stopButton.hide();
		that.playButton.show();
		that.stepButton.show();
   }


   that.container = jQuery('<div>').addClass('controls');

   that.stepButton = jQuery('<div>').addClass('step').text('>|');
   that.playButton = jQuery('<div>').addClass('play').text('>');
   that.stopButton = jQuery('<div>').addClass('stop').text('||');

   that.container.append(that.stepButton).append(that.playButton).append(that.stopButton);
   jQuery('body').append(that.container);

   that.stepButton.bind('click', that.step);
   that.playButton.bind('click', that.play);
   that.stopButton.bind('click', that.stop);

}

jQuery(document).ready(function() {
   var vp = new Viewport(jQuery(window).width()*0.6, jQuery(window).height()*0.9);
   vp.render();
   var movements;
   var moveList = jQuery('.selector .list');
   jQuery.getJSON('movements.json', function(data) {
		movements = data;
		for (var m in movements) {
			var move = m.split('-');
			var listCell = jQuery('<div>').addClass('list-movement').attr('data-movement', m).text(move[0]);
			var listRow = moveList.find('div[data-rounds="'+move[1]+'"]');
			if (listRow.size()) {
				listRow.append(listCell);
			}
			else {
				moveList.append(jQuery('<div>').addClass('list-row').attr('data-rounds', move[1]).append(jQuery('<div>').addClass('list-movement').text(move[1])).append(listCell));
			}
		}
		var sum;
		var control = new Control();
		control.container.hide();
		jQuery('.selector .list .list-movement[data-movement]').click(function() {
			vp.clear();
			if (sum) {
				sum.clear();
			}
			control.stop();
			var move = movements[jQuery(this).attr('data-movement')];
			var t = new Tables(vp, move.tables);
			var direction = jQuery('.layout .direction').val() + '-' + jQuery('.layout .way').val();
			t.setDirection(direction);
			t.display();
			sum = new Summary(move.tables * 2);
			sum.render();
			move = new Movement(vp, move, t, sum);
			control.setMovement(move);
			control.container.show();
		});
   });
});