List of filters included in the WC Pickup Store plugin. Check for filter availability in the plugin source code.

wps-filterts.php

<?php
/**
 * Add new content to be displayed in the template of store information in the Checkout page
 * 
 * @author: @keylorcr
 * @version 1.5.23 
 */
function kmchild_wps_stores_fields($the_fields) {
	foreach ($the_fields as $store_id => $value) {
		$the_fields[$store_id][] = array(
			'key' => 'content_info',
			'value' => apply_filters('the_content', get_post_field('post_content', $store_id))
		);
	}

	return $the_fields;
}
add_filter('wps_stores_fields', 'kmchild_wps_stores_fields');


/**
 * Mapping custom fields for the Checkout template
 * 
 * @author: @keylorcr
 * @version 1.5.22 
 */
function kmchild_wps_get_store_custom_fields($fields) {
	$fields[] = 'description';
	return $fields;
}
add_filter('wps_get_store_custom_fields', 'kmchild_wps_get_store_custom_fields');

/**
 * Change Shipping and Store details label
 * 
 * @author: @keylorcr
 */
function kmchild_wps_shipping_title($title) {
	$post_data = wps_validate_ajax_request();
	return 'My custom label';
}
add_filter('wps_shipping_method_label', 'kmchild_wps_shipping_title');
add_filter('wps_store_checkout_label', 'kmchild_wps_shipping_title');

/**
 * Update WPS shipping costs
 * 
 * @author: @keylorcr
 */
function kmchild_update_wps_shipping_costs($cost) {
	return 75;
}
add_filter('wps_shipping_costs', 'kmchild_update_wps_shipping_costs', 50);


/**
 * Edit WC Pickup Store shipping label
 * 
 * @author: @keylorcr
 * @version 1.7.1
 * 
 * @param string $formatted_title Set title with costs
 * @param string $title Raw title for shipping method
 * @param float $calculated_costs
 */
function kmchild_wps_formatted_shipping_title( $formatted_title, $title, $calculated_costs ) {
	return ( $calculated_costs == 0 ) ? $formatted_title . ' Free' : $title . '...etc';
}
add_filter('wps_formatted_shipping_title', 'kmchild_wps_formatted_shipping_title', 10, 3);

/**
 * Hide shipping rates when free shipping is available, but keep "WC Pickup Store"
 */
function kmchild_hide_shipping_if_free_is_available( $rates, $package ) {
	$new_rates = array();
	foreach ( $rates as $rate_id => $rate ) {
		// Check for free_shipping
		if ( 'free_shipping' === $rate->method_id ) {
			$new_rates[ $rate_id ] = $rate;
			break;
		}
	}

	if ( ! empty( $new_rates ) ) {
		// Check for wc_pickup_store
		foreach ( $rates as $rate_id => $rate ) {
			if ('wc_pickup_store' === $rate->method_id ) {
				$new_rates[ $rate_id ] = $rate;
				break;
			}
		}
		return $new_rates;
	}

	return $rates;
}
add_filter( 'woocommerce_package_rates', 'kmchild_hide_shipping_if_free_is_available', 10, 2 );

/**
 * Disable payment gateway by chosen store
 * 
 * @author @keylorcr
 */
function kmchild_wps_disable_payment_gateway_by_store( $payment_gateways ) {
	if ( isset( WC()->session ) ) {
		$store_name = WC()->session->get( 'shipping_store' );
		$store_id = wps_get_store_id_by_name( $store_name );

		// Array of stores where COD payment will be disabled
		if ( in_array( $store_id, array( 79 ) ) ) {
			unset( $payment_gateways['cod'] );
		}
	}

	return $payment_gateways;
}
add_filter( 'woocommerce_available_payment_gateways', 'kmchild_wps_disable_payment_gateway_by_store' );

/**
 * Remove shipping method based on Country
 * 
 * @since 1.0.0
 * @link https://www.xadapter.com/woocommerce-shipping-hide-shipping-methods-based-destination-country/
 */
function kmchild_remove_shipping_methods_by_country( $available_shipping_methods, $package ) {
	$customer_country = WC()->customer->get_shipping_country();

	// Way #1: Disable by a country list
	$country_list = array(
		'CR' => array( 'wc_pickup_store' ),
	);

	if ( in_array( $customer_country , array_keys( $country_list ) ) ) {
		if ( ! empty( $country_list[ $customer_country ] ) ) {
		    foreach ( $country_list[ $customer_country ] as $shipping_methods ) {
				foreach ( $available_shipping_methods as $shipping_method => $value ) {
					if ( strpos( $shipping_method, $shipping_methods ) !== false ) {
						unset( $available_shipping_methods[ $shipping_method ] );
					}
				}
		    }
		}
	}
	
	// Way #2: Enable only specific country
	$country_list = array( 'CR' );
	if ( ! in_array( $customer_country, $country_list ) ) {
		unset( $available_shipping_methods['wc_pickup_store'] );
	}

	return $available_shipping_methods;
}
add_filter( 'woocommerce_package_rates', 'kmchild_remove_shipping_methods_by_country', 10, 2 );