Must-use plugin for WordPress plugin and theme demo sites

db-dump.sh

#!/usr/bin/env bash

# Dump specific DB tables to a file.
mysqldump -u sqluser dbname wp_posts wp_postmeta > dump.sql

db-import.sh

#!/usr/bin/env bash

# Replace certain DB tables with pre-defined content. Call every hour via cron.
mysql -u root dbname < dump.sql

mu-demo.php

<?php
/**
 * A very basic set of helpers for creating locked-down WP sites.
 */

// Auto login demo user.
add_action( 'plugins_loaded', function() {
	if ( is_admin() && ! is_user_logged_in() ) {
		$user = get_user_by( 'login', 'demo' );
		$redirect_url = $_SERVER['REQUEST_URI'];

		if ( isset( $user->ID ) ) {
			wp_set_current_user( $user->ID, $user->user_login );
			wp_set_auth_cookie( $user->ID );
			do_action( 'wp_login', $user->user_login, $user );
			wp_safe_redirect( $redirect_url );
			exit;
		}
	}
} );

add_filter( 'user_has_cap', function( $allcaps ) {
	$allow_caps = array_fill_keys( [
		'wpcf7_read_contact_forms',
		'wpcf7_edit_contact_forms',
		'wpcf7_edit_contact_form',
	], true );

	return array_merge( $allcaps, $allow_caps );
} );

// Limit user capabilities to only certain things.
add_filter( 'map_meta_cap', function( $caps, $cap, $user_id, $args ) {
	$user = get_user_by( 'id', $user_id );

	$allow_caps = array(
		'wpcf7_read_contact_forms',
		'wpcf7_edit_contact_forms',
		'wpcf7_edit_contact_form',
	);

	if ( ! in_array( 'administrator', $user->roles ) ) {
		if ( in_array( $cap, $allow_caps, true ) ) {
			return array( $cap );
		}

		return array( 'do_not_allow' );
	}

	return $caps;
}, 9876, 4 );

add_action( 'admin_notices', function() {
	$url = 'https://preseto.com/go/cf7-storage?utm_source=demo_notice';

	?>
	<div class="notice notice-warning">
		<p>
			This is a demo of the <a href="<?php echo esc_url( $url ) ?>">Storage for Contact Form 7 plugin</a>.
			<a href="<?php echo esc_url( $url ) ?>" class="button button-primary">Buy Now</a>
		</p>
	</div>
	<?php
} );

add_action( 'wp_head', 'preseto_track' );
add_action( 'admin_head', 'preseto_track' );

function preseto_track() {
  // Output tracking scripts.
}