/**
 * WooCommerce Integration Scripts
 *
 * Handles booking form interactions for WooCommerce integration.
 *
 * @package Magdev\WpBnb
 */

(function ($) {
	'use strict';

	/**
	 * WP BnB WooCommerce Integration
	 */
	const WpBnbWC = {
		/**
		 * Settings from localization
		 */
		settings: {},

		/**
		 * Initialize
		 */
		init: function () {
			this.settings = window.wpBnbWC || {};
			this.bindEvents();
			this.initBookingForms();
		},

		/**
		 * Bind global events
		 */
		bindEvents: function () {
			// Admin: Sync all rooms button
			$(document).on('click', '.bnb-sync-rooms-btn', this.handleSyncRooms.bind(this));

			// Admin: Generate invoice button
			$(document).on('click', '.bnb-generate-invoice-btn', this.handleGenerateInvoice.bind(this));
		},

		/**
		 * Initialize booking forms
		 */
		initBookingForms: function () {
			$('.bnb-wc-booking-form').each(function () {
				new BookingForm($(this));
			});
		},

		/**
		 * Handle sync all rooms button
		 */
		handleSyncRooms: function (e) {
			e.preventDefault();
			const $btn = $(e.currentTarget);
			const $status = $btn.siblings('.sync-status');

			$btn.prop('disabled', true).addClass('updating');
			$status.text(this.settings.i18n?.syncing || 'Syncing...');

			$.ajax({
				url: this.settings.ajaxUrl,
				type: 'POST',
				data: {
					action: 'wp_bnb_sync_all_rooms',
					nonce: this.settings.nonce
				},
				success: function (response) {
					if (response.success) {
						$status.html('<span class="success">' + response.data.message + '</span>');
					} else {
						$status.html('<span class="error">' + (response.data?.message || 'Error') + '</span>');
					}
				},
				error: function () {
					$status.html('<span class="error">' + (WpBnbWC.settings.i18n?.error || 'Error occurred') + '</span>');
				},
				complete: function () {
					$btn.prop('disabled', false).removeClass('updating');
				}
			});
		},

		/**
		 * Handle generate invoice button
		 */
		handleGenerateInvoice: function (e) {
			e.preventDefault();
			const $btn = $(e.currentTarget);
			const orderId = $btn.data('order-id');

			$btn.prop('disabled', true).addClass('updating');

			$.ajax({
				url: this.settings.ajaxUrl,
				type: 'POST',
				data: {
					action: 'wp_bnb_generate_invoice',
					nonce: this.settings.nonce,
					order_id: orderId
				},
				success: function (response) {
					if (response.success) {
						location.reload();
					} else {
						alert(response.data?.message || 'Error generating invoice');
					}
				},
				error: function () {
					alert(WpBnbWC.settings.i18n?.error || 'Error occurred');
				},
				complete: function () {
					$btn.prop('disabled', false).removeClass('updating');
				}
			});
		}
	};

	/**
	 * Booking Form Handler
	 */
	class BookingForm {
		constructor($form) {
			this.$form = $form;
			this.roomId = $form.data('room-id');
			this.productId = $form.data('product-id');
			this.checkAvailabilityTimeout = null;

			this.bindEvents();
		}

		bindEvents() {
			this.$form.on('change', '.bnb-date-input', this.onDateChange.bind(this));
			this.$form.on('change', '.bnb-guests-input', this.onGuestsChange.bind(this));
			this.$form.on('change', '.bnb-service-checkbox', this.onServiceChange.bind(this));
			this.$form.on('change', '.bnb-service-qty', this.onServiceQtyChange.bind(this));
			this.$form.on('submit', this.onSubmit.bind(this));
		}

		onDateChange() {
			const checkIn = this.$form.find('[name="bnb_check_in"]').val();
			const checkOut = this.$form.find('[name="bnb_check_out"]').val();

			// Validate dates
			if (!checkIn || !checkOut) {
				this.updateAvailabilityStatus('');
				return;
			}

			const checkInDate = new Date(checkIn);
			const checkOutDate = new Date(checkOut);
			const today = new Date();
			today.setHours(0, 0, 0, 0);

			if (checkInDate < today) {
				this.updateAvailabilityStatus('unavailable', WpBnbWC.settings.i18n?.pastDate || 'Check-in cannot be in the past');
				return;
			}

			if (checkOutDate <= checkInDate) {
				this.updateAvailabilityStatus('unavailable', WpBnbWC.settings.i18n?.invalidDates || 'Check-out must be after check-in');
				return;
			}

			// Check availability
			this.checkAvailability(checkIn, checkOut);
		}

		onGuestsChange() {
			// Re-validate if needed
			const checkIn = this.$form.find('[name="bnb_check_in"]').val();
			const checkOut = this.$form.find('[name="bnb_check_out"]').val();

			if (checkIn && checkOut) {
				this.checkAvailability(checkIn, checkOut);
			}
		}

		onServiceChange(e) {
			const $checkbox = $(e.currentTarget);
			const $item = $checkbox.closest('.bnb-wc-service-item');
			const $qtyInput = $item.find('.bnb-service-qty');

			if ($checkbox.is(':checked')) {
				$item.addClass('selected');
				$qtyInput.prop('disabled', false);
			} else {
				$item.removeClass('selected');
				$qtyInput.prop('disabled', true);
			}

			this.updatePriceDisplay();
		}

		onServiceQtyChange() {
			this.updatePriceDisplay();
		}

		checkAvailability(checkIn, checkOut) {
			// Debounce
			clearTimeout(this.checkAvailabilityTimeout);

			this.updateAvailabilityStatus('checking', WpBnbWC.settings.i18n?.checking || 'Checking availability...');

			this.checkAvailabilityTimeout = setTimeout(() => {
				const guests = this.$form.find('[name="bnb_guests"]').val() || 1;

				$.ajax({
					url: WpBnbWC.settings.ajaxUrl,
					type: 'POST',
					data: {
						action: 'wp_bnb_get_availability',
						nonce: WpBnbWC.settings.nonce,
						room_id: this.roomId,
						check_in: checkIn,
						check_out: checkOut,
						guests: guests
					},
					success: (response) => {
						if (response.success) {
							const data = response.data;

							if (data.available) {
								this.updateAvailabilityStatus('available', WpBnbWC.settings.i18n?.available || 'Available');
								this.updatePriceDisplay(data.price, data.breakdown);
								this.enableSubmit();
							} else {
								this.updateAvailabilityStatus('unavailable', data.message || WpBnbWC.settings.i18n?.unavailable || 'Not available');
								this.disableSubmit();
							}
						} else {
							this.updateAvailabilityStatus('unavailable', response.data?.message || 'Error checking availability');
							this.disableSubmit();
						}
					},
					error: () => {
						this.updateAvailabilityStatus('unavailable', WpBnbWC.settings.i18n?.error || 'Error checking availability');
						this.disableSubmit();
					}
				});
			}, 500);
		}

		updateAvailabilityStatus(status, message) {
			const $statusEl = this.$form.find('.bnb-availability-status');

			if (!status) {
				$statusEl.hide();
				return;
			}

			$statusEl.removeClass('checking available unavailable').addClass(status);

			let icon = '';
			switch (status) {
				case 'checking':
					icon = '<span class="dashicons dashicons-update"></span>';
					break;
				case 'available':
					icon = '<span class="dashicons dashicons-yes-alt"></span>';
					break;
				case 'unavailable':
					icon = '<span class="dashicons dashicons-no-alt"></span>';
					break;
			}

			$statusEl.html(icon + ' ' + message).show();
		}

		updatePriceDisplay(roomPrice, breakdown) {
			const $priceDisplay = this.$form.find('.bnb-wc-price-display');

			if (!roomPrice) {
				$priceDisplay.hide();
				return;
			}

			// Calculate services total
			let servicesTotal = 0;
			const nights = breakdown?.nights || 1;

			this.$form.find('.bnb-wc-service-item').each(function () {
				const $item = $(this);
				const $checkbox = $item.find('.bnb-service-checkbox');

				if ($checkbox.is(':checked')) {
					const price = parseFloat($item.data('price')) || 0;
					const pricingType = $item.data('pricing-type');
					const qty = parseInt($item.find('.bnb-service-qty').val()) || 1;

					if (pricingType === 'per_night') {
						servicesTotal += price * qty * nights;
					} else if (pricingType === 'per_booking') {
						servicesTotal += price * qty;
					}
				}
			});

			const grandTotal = roomPrice + servicesTotal;

			// Update display
			let html = '<div class="price-row"><span>' + (WpBnbWC.settings.i18n?.roomTotal || 'Room') + '</span><span>' + WpBnbWC.formatPrice(roomPrice) + '</span></div>';

			if (servicesTotal > 0) {
				html += '<div class="price-row"><span>' + (WpBnbWC.settings.i18n?.services || 'Services') + '</span><span>' + WpBnbWC.formatPrice(servicesTotal) + '</span></div>';
			}

			html += '<div class="price-row total"><span>' + (WpBnbWC.settings.i18n?.total || 'Total') + '</span><span>' + WpBnbWC.formatPrice(grandTotal) + '</span></div>';

			$priceDisplay.html(html).show();
		}

		enableSubmit() {
			this.$form.find('.add-to-cart-btn').prop('disabled', false);
		}

		disableSubmit() {
			this.$form.find('.add-to-cart-btn').prop('disabled', true);
		}

		onSubmit(e) {
			// Form will submit normally - WooCommerce handles the add to cart
			// Just validate one more time
			const checkIn = this.$form.find('[name="bnb_check_in"]').val();
			const checkOut = this.$form.find('[name="bnb_check_out"]').val();

			if (!checkIn || !checkOut) {
				e.preventDefault();
				alert(WpBnbWC.settings.i18n?.selectDates || 'Please select check-in and check-out dates');
				return false;
			}
		}
	}

	/**
	 * Format price
	 */
	WpBnbWC.formatPrice = function (price) {
		const currency = this.settings.currency || 'CHF';
		const symbol = this.settings.currencySymbol || currency;
		const decimals = this.settings.priceDecimals || 2;
		const decimalSep = this.settings.decimalSeparator || '.';
		const thousandSep = this.settings.thousandSeparator || "'";

		const formatted = price.toFixed(decimals).replace(/\B(?=(\d{3})+(?!\d))/g, thousandSep).replace('.', decimalSep);

		return symbol + ' ' + formatted;
	};

	// Initialize on DOM ready
	$(document).ready(function () {
		WpBnbWC.init();
	});

	// Export for external use
	window.WpBnbWC = WpBnbWC;

})(jQuery);