eventbrite-for-the-events-calendar/includes/class-eb4tec-shortcodes.php

<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

final class EB4TEC_Shortcodes {

	public function __construct(
		private readonly EB4TEC_API_Client     $api,
		private readonly EB4TEC_Ticket_Manager $ticket_manager,
	) {
		add_action( 'init', [ $this, 'register_shortcodes' ] );
	}

	public function register_shortcodes(): void {
		add_shortcode( 'eb4tec_capacity', [ $this, 'capacity_shortcode' ] );
		add_shortcode( 'eb4tec_tickets',  [ $this, 'tickets_shortcode' ] );
	}

	/**
	 * [eb4tec_capacity event_id="123" post_id="456"]
	 * Renders remaining ticket capacity for an event.
	 */
	public function capacity_shortcode( array $atts ): string {
		$post_id = $this->resolve_post_id( $atts );
		if ( ! $post_id ) {
			return '';
		}

		$total     = (int) get_post_meta( $post_id, '_eb4tec_capacity', true );
		$available = $this->ticket_manager->get_available_capacity( $post_id );

		if ( $total <= 0 ) {
			return '';
		}

		if ( $available <= 0 ) {
			return '<span class="eb4tec-capacity eb4tec-capacity--sold-out">' .
				esc_html__( 'Sold out', 'eb4tec' ) .
				'</span>';
		}

		return sprintf(
			'<span class="eb4tec-capacity">%s</span>',
			esc_html( sprintf(
				/* translators: 1: available spots, 2: total capacity */
				_n( '%1$d of %2$d spot remaining', '%1$d of %2$d spots remaining', $available, 'eb4tec' ),
				$available,
				$total
			) )
		);
	}

	/**
	 * [eb4tec_tickets event_id="123" post_id="456"]
	 * Renders a list of public Eventbrite ticket classes with a Buy button.
	 */
	public function tickets_shortcode( array $atts ): string {
		$post_id = $this->resolve_post_id( $atts );
		if ( ! $post_id ) {
			return '';
		}

		$eb_event_id = (string) get_post_meta( $post_id, '_eb4tec_event_id', true );
		if ( ! $eb_event_id ) {
			return '';
		}

		$result = $this->api->get_ticket_classes( $eb_event_id );
		if ( is_wp_error( $result ) ) {
			return '';
		}

		$ticket_classes = $result['ticket_classes'] ?? [];
		$wp_label       = strtolower( (string) get_option( 'eb4tec_wp_ticket_label', 'WordPress Purchase' ) );
		$product_id     = (int) get_post_meta( $post_id, '_eb4tec_wp_product_id', true );
		$buy_url        = $product_id ? get_permalink( $product_id ) : '';

		// Filter out the hidden WordPress Purchase class.
		$public_classes = array_filter( $ticket_classes, function( array $tc ) use ( $wp_label ): bool {
			return strtolower( $tc['name'] ?? '' ) !== $wp_label;
		} );

		if ( empty( $public_classes ) ) {
			return '';
		}

		$output = '<ul class="eb4tec-ticket-classes">';

		foreach ( $public_classes as $tc ) {
			$name        = esc_html( $tc['name'] ?? '' );
			$description = esc_html( $tc['description'] ?? '' );
			$free        = ! empty( $tc['free'] );
			$price       = $free ? esc_html__( 'Free', 'eb4tec' ) : esc_html( $tc['cost']['display'] ?? '' );
			$sold_out    = ! empty( $tc['sold_out'] );
			$hidden      = ! empty( $tc['hidden'] );

			if ( $hidden ) {
				continue;
			}

			$output .= '<li class="eb4tec-ticket-class">';
			$output .= '<strong class="eb4tec-ticket-name">' . $name . '</strong>';
			if ( $description ) {
				$output .= ' <span class="eb4tec-ticket-description">' . $description . '</span>';
			}
			$output .= ' <span class="eb4tec-ticket-price">' . $price . '</span>';

			if ( $sold_out ) {
				$output .= ' <span class="eb4tec-ticket-sold-out">' . esc_html__( 'Sold out', 'eb4tec' ) . '</span>';
			}
			$output .= '</li>';
		}

		$output .= '</ul>';

		// Add Buy Tickets button if a WC product exists.
		if ( $buy_url ) {
			$available = $this->ticket_manager->get_available_capacity( $post_id );
			if ( $available > 0 ) {
				$output .= sprintf(
					'<a href="%s" class="button eb4tec-buy-button">%s</a>',
					esc_url( $buy_url ),
					esc_html__( 'Buy Tickets', 'eb4tec' )
				);
			} else {
				$output .= '<span class="eb4tec-sold-out-badge">' . esc_html__( 'Sold Out', 'eb4tec' ) . '</span>';
			}
		}

		return $output;
	}

	private function resolve_post_id( array $atts ): int {
		$atts = shortcode_atts( [
			'post_id'  => 0,
			'event_id' => '',
		], $atts );

		if ( ! empty( $atts['post_id'] ) ) {
			return (int) $atts['post_id'];
		}

		if ( ! empty( $atts['event_id'] ) ) {
			// Look up TEC post by Eventbrite event ID.
			$query = new WP_Query( [
				'post_type'      => 'tribe_events',
				'post_status'    => [ 'publish', 'draft' ],
				'posts_per_page' => 1,
				'fields'         => 'ids',
				'meta_query'     => [ [
					'key'   => '_eb4tec_event_id',
					'value' => sanitize_text_field( $atts['event_id'] ),
				] ],
			] );
			return $query->posts[0] ?? 0;
		}

		// Default to the current event in the loop.
		return get_the_ID() ?: 0;
	}
}