Add support for a custom dates summary, tickets url and venue for productions.

itr.php

<?php
function itr_get_events_for_production( $production_id ) {
	
	$production = new WPT_Production( $production_id );
	$events = $production->events();

	return $events;	
	
}

function itr_get_dates_for_production( $production_id ) {

	$events = itr_get_events_for_production( $production_id );
	
	if ( empty( $events ) ) {
		return;
	}
	
	if ( 1 == count( $events ) ) {
		echo $events[0]->startdate();
	} else {
		
		$datetime_start = $events[0]->datetime() + get_option( 'gmt_offset' ) * 3600;
		$datetime_end = $events[ count( $events ) - 1 ]->datetime() + get_option( 'gmt_offset' ) * 3600;
		
		$year_start = date( 'Y', $datetime_start );
		$year_end = date( 'Y', $datetime_end );
	
		if ( $year_start != $year_end ) {
			printf( 
				'%s - %s', 
				date( 'D j F Y', $datetime_start ), 
				date( 'D j F Y', $datetime_end )
			);					
		} else {

			$month_start = date( 'm', $datetime_start );
			$month_end = date( 'm', $datetime_end );
					
			if ( $month_start != $month_end ) {
				printf( 
					'%s - %s', 
					date( 'D j F', $datetime_start ), 
					date( 'D j F Y', $datetime_end )
				);		
			} else {
				
				$day_start = date( 'd', $datetime_start );
				$day_end = date( 'd', $datetime_end );
						
				if ( $day_start != $day_end ) {
					printf( 
						'%s - %s', 
						date( 'D j F', $datetime_start ), 
						date( 'D j F Y', $datetime_end )
					);		
				} else {
					echo $events[0]->startdate();
				}
				
			}
			
		}
	
	}
	
	return ob_get_clean();

}

function itr_get_location_for_production( $production_id ) {
	
	if ( !function_exists( 'get_field' ) ) {
		return;
	}
	
	$venue = get_field( 'venue', $production_id );

	if ( !empty( $venue ) ) {
		return $venue;
	}
	
}

function itr_get_tickets_url_for_production( $production_id ) {

	if ( !function_exists( 'get_field' ) ) {
		return;
	}
	
	$tickets_text = get_field( 'tickets_text', $production_id );
	$tickets_url = get_field( 'tickets_url', $production_id );
	$class = WPT_Event::post_type_name.'_tickets_url';

	ob_start();
	
	if ( empty( $tickets_url ) && !empty( $tickets_text ) ) {
		?><span class="<?php echo $class; ?>"><?php echo $tickets_text; ?></span><?php
	} elseif ( !empty( $tickets_url ) && empty( $tickets_text ) ) {
		?><a href="<?php echo $tickets_url; ?>" class="<?php echo $class; ?>"><?php _e( 'Tickets', 'theatre' ); ?></a><?php		
	} elseif ( !empty( $tickets_url ) && !empty( $tickets_text ) ) {
		?><a href="<?php echo $tickets_url; ?>" class="<?php echo $class; ?>"><?php echo $tickets_text; ?></a><?php		
	}

	return ob_get_clean();
		
}



function itr_prepend_content_with_event_details( $content ) {
	if( class_exists( 'WPT_Production' ) && is_singular( WPT_Production::post_type_name ) && is_main_query() ) {
		ob_start();
		?><div class="event_details">
			<div class="event_dates"><?php echo itr_get_dates_for_production( get_the_id() ); ?></div>
			<div class="event_location"><?php echo itr_get_location_for_production( get_the_id() ); ?></div>
			<div class="event_tickets"><?php echo itr_get_tickets_url_for_production( get_the_id() ); ?></div>
		</div><?php
		
		echo $content;
		
		$content = ob_get_clean();
	}	
	return $content;
}
add_filter( 'the_content', 'itr_prepend_content_with_event_details', 11 );

function itr_prepend_title_with_subtitle( $title, $post_id ) {
	if ( function_exists( 'get_field' ) && is_singular( WPT_Production::post_type_name ) && is_main_query() && in_the_loop() ) {
		ob_start();
		?><div class="subtitle"><?php the_field( 'subtitle' ); ?></div><?php
		echo $title;
		$title = ob_get_clean();
	}	
	return $title;
}
add_filter( 'the_title', 'itr_prepend_title_with_subtitle', 10, 2  );

function itr_add_acf_fields() {
	if(function_exists("register_field_group"))
	{
		register_field_group(array (
			'id' => 'acf_production-details',
			'title' => 'Production details',
			'fields' => array (
				array (
					'key' => 'field_5b3c6b64d5f16',
					'label' => 'Tickets URL',
					'name' => 'tickets_url',
					'type' => 'text',
					'default_value' => '',
					'placeholder' => 'https://',
					'prepend' => '',
					'append' => '',
					'formatting' => 'none',
					'maxlength' => '',
				),				
				array (
					'key' => 'field_itr_tickets_text',
					'label' => 'Text on tickets button',
					'name' => 'tickets_text',
					'type' => 'text',
					'default_value' => '',
					'placeholder' => __( 'Tickets', 'theatre' ),
					'prepend' => '',
					'append' => '',
					'formatting' => 'none',
					'maxlength' => '',
					'instructions' => sprintf( 'Leave blank for \'%s\'', __( 'Tickets', 'theatre' ) ),
				),
				array (
					'key' => 'field_5b3c9244c9795',
					'label' => 'Subtitle',
					'name' => 'subtitle',
					'type' => 'text',
					'instructions' => 'Shown above event title on detail page.',
					'default_value' => '',
					'placeholder' => 'Eg. Royal NZ Ballet presents',
					'prepend' => '',
					'append' => '',
					'formatting' => 'html',
					'maxlength' => '',
				),
				array (
					'key' => 'field_5b3c6b3cd5f15',
					'label' => 'Venue',
					'name' => 'venue',
					'type' => 'text',
					'default_value' => '',
					'placeholder' => '',
					'prepend' => '',
					'append' => '',
					'formatting' => 'none',
					'maxlength' => '',
				),
			),
			'location' => array (
				array (
					array (
						'param' => 'post_type',
						'operator' => '==',
						'value' => 'wp_theatre_prod',
						'order_no' => 0,
						'group_no' => 0,
					),
				),
			),
			'options' => array (
				'position' => 'normal',
				'layout' => 'default',
				'hide_on_screen' => array (
				),
			),
			'menu_order' => 0,
		));
	}
	
}
add_action( 'init', 'itr_add_acf_fields' );

function itr_change_default_template_for_productions( $template ) {
	return '{{thumbnail|permalink}} {{title|permalink}} {{itr_dates}} {{venue}} {{tickets}}';
}
add_filter( 'wpt/production/template/default', 'itr_change_default_template_for_productions' );

function itr_get_production_tickets( $value, $field, $production ) {
	
	return itr_get_tickets_url_for_production( $production->ID );
}
add_filter( 'wpt_production_tickets', 'itr_get_production_tickets', 10, 3);

function itr_get_production_dates( $value, $field, WPT_Production $production ) {
	
	return itr_get_dates_for_production( $production->ID );
}
add_filter( 'wpt_production_itr_dates', 'itr_get_production_dates', 10, 3);