130 lines
4.8 KiB
JavaScript
130 lines
4.8 KiB
JavaScript
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// this file should contain a class that gets info from /api/showings/{id}
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// and renders the seat chooser
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// there may be multiple seats selected at once
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// the input is a matrix with null OR a seat object
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class Seat {
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constructor(id, row, col, linked, reserved) {
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this.id = id; // database id
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this.row = row;
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this.col = col;
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this.linked = linked; // linked seat
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this.reserved = reserved;
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}
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}
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class SeatChooser {
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constructor(showingId, container) {
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if (container.innerText === '') {
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container.innerText = 'Loading...';
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}
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this.showingId = showingId; // id of the showing
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this.container = container; // the container to render the seat chooser in
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this.seats = []; // array of nulls and Seat objects
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this.selectedSeats = []; // array of Seat objects
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this.init();
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}
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async init() {
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let showingJson = await (await fetch(`/api/showings/${this.showingId}`)).json();
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let roomMatrix = await (await fetch(`/api/showings/${this.showingId}/seatMatrix`)).json();
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// Matrix<json | null> -> Matrix<Seat | null>
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console.log("Matrix<json | null> -> Matrix<Seat | null>");
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this.seats = roomMatrix.map((row, rowIndex) => {
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return row.map((seat, colIndex) => {
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if (seat === null) {
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return null;
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}
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return new Seat(
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seat['seat_id'],
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seat['seat_row'],
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seat['seat_column'],
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seat['seat_linked_id'],
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seat['reserved']
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);
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});
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});
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console.log(this.seats);
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this.render();
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}
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render() {
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console.log("rendering");
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let linkedCache = false;
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// render the seat chooser
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this.container.innerHTML = '';
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// this -> row -> seat
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this.seats.forEach((row, rowIndex) => {
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let rowDiv = document.createElement('div');
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rowDiv.classList.add('row');
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row.forEach((seat, colIndex) => {
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let seatDiv = document.createElement('div');
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if (seat) {
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seatDiv.classList.add('seat');
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seatDiv.classList.add(seat.reserved ? 'reserved' : 'available');
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if (seat.linked) {
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// if cache is false, then this is the first seat in the linked pair
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if (!linkedCache) {
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seatDiv.classList.add('linked-left');
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linkedCache = true;
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} else {
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seatDiv.classList.add('linked-right');
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linkedCache = false;
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}
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} else {
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linkedCache = false;
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}
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seatDiv.innerText = `${seat.row}-${seat.col}`;
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seatDiv.dataset.id = seat.id;
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seatDiv.dataset.row = seat.row;
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seatDiv.dataset.col = seat.col;
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seatDiv.addEventListener('click', (e) => {
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this.toggleSeat(seat, e);
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});
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} else {
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seatDiv.classList.add('no-seat');
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}
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rowDiv.appendChild(seatDiv);
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});
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this.container.appendChild(rowDiv);
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});
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}
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toggleSeat(seat, e) {
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// toggle the seat
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// because of linked seats, we need to toggle both seats
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if (seat.reserved) return;
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e.target.classList.toggle('selected');
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if (seat.linked) {
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// beware that you can click on the left or right seat
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// the left seat has class linked-left and the right seat has class linked-right
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let leftbool = e.target.classList.contains('linked-left');
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let linkedSeat = this.seats[seat.row - 1][leftbool ? seat.col - 1 : seat.col + 1];
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if (leftbool) e.target.nextElementSibling.classList.toggle('selected');
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else e.target.previousElementSibling.classList.toggle('selected');
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if (this.selectedSeats.includes(linkedSeat)) {
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this.selectedSeats.splice(this.selectedSeats.indexOf(linkedSeat), 1);
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this.selectedSeats.splice(this.selectedSeats.indexOf(seat), 1);
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} else {
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this.selectedSeats.push(linkedSeat);
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this.selectedSeats.push(seat);
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}
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} else {
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if (this.selectedSeats.includes(seat)) {
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this.selectedSeats.splice(this.selectedSeats.indexOf(seat), 1);
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} else {
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this.selectedSeats.push(seat);
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}
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}
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}
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}
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let seatChooser = new SeatChooser(1, document.getElementById('seat-chooser'));
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