quantites-and-units.php

<?php
/*
Plugin Name: Quantities and Units for WooCommerce
Plugin URI: https://github.com/devterm-its/quantities-and-units-for-woocommerce/
Description: Easily require your customers to buy a minimum / maximum / incremental amount of products to continue with their checkout.
Version: 1.1.0
Author: devterm IT Solutions GmbH & Co. KG, Nicholas Verwymeren
Author URI: https://devterm.de
*/

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

if ( ! class_exists( 'WC_Quantities_and_Units' ) ) :

class WC_Quantities_and_Units {

	public $wc_version;

	/**
	 * @var WooCommerce Supplier instance
	 * @since 2.1
	 */
	protected static $_instance = null;

	/**
	 * Main Incremental Product Quantities Instance
	 *
	 * @return WooCommerce Supplier - Main instance
	 */
	public static function instance() {
		if ( is_null( self::$_instance ) ) {
			self::$_instance = new self();
		}
		return self::$_instance;
	}

	private $product_unit;

	public function product_unit() {
		return $this->product_unit;
	}

	public function __construct() {

		// Activation / Deactivation Hooks
		register_activation_hook( __FILE__, array( $this, 'activation_hook' ) );
		register_activation_hook( __FILE__, array( $this, 'update_rules_with_roles' ) );
		register_deactivation_hook( __FILE__, array( $this, 'deactivation_hook' ) );

		// Include Required Files
		require_once( 'includes/wcqu-functions.php' );
		require_once( 'includes/class-wcqu-filters.php' );
		require_once( 'includes/class-wcqu-actions.php' );
		require_once( 'includes/class-wcqu-product-meta-box.php' );
		require_once( 'includes/class-wcqu-post-type.php' );
		require_once( 'includes/class-wcqu-validations.php' );
		require_once( 'includes/class-wcqu-advanced-rules.php' );
		require_once( 'includes/class-wcqu-units-box.php' );
		$this->product_unit = require_once( 'includes/class-wcqu-product-unit.php' );

		// Add Scripts and styles
		add_action( 'wp_enqueue_scripts', array( $this, 'input_value_validation' ) );
		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_styles' ) );
		add_action( 'admin_init', array( $this, 'quantity_styles' ) );

		// Set WC Version Number
		add_action( 'init', array( $this, 'get_wc_version' ) );

		// Control Admin Notices
//		add_action( 'admin_notices', array( $this, 'thumbnail_plugin_notice' ) );
		add_action( 'admin_init', array( $this, 'thumbnail_plugin_notice_ignore' ) );

		add_action( 'plugins_loaded', array( $this, 'plugins_loaded' ) );
	}

	public function plugins_loaded() {
		// Remove intval restriction, we'll allow decimals
		remove_filter( 'woocommerce_stock_amount', 'intval' );

		// allow decimal floats
		add_filter( 'woocommerce_stock_amount', 'floatval' );
	}

	/*
	*	Adds default option values
	*/
	public function activation_hook() {

		$options = get_option( 'ipq_options' );

		$defaults = array (
			'ipq_site_rule_active'	=> '',
			'ipq_site_min'			=> '',
			'ipq_site_max' 			=> '',
			'ipq_site_step' 		=> '',
			'ipq_site_rule_active'	=> '',
			'ipq_show_qty_note' 	=> '',
			'ipq_qty_text'			=> 'Minimum Qty: %MIN%',
			'ipq_show_qty_note_pos' => 'below',
			'ipq_qty_class'			=> ''
		);

		// If no options set the defaults
		if ( $options == false ) {
			add_option( 'ipq_options', $defaults, '', false );

		// Otherwise check that all option are set
		} else {
			$needs_update = FALSE;

			// Check and assign each unset value
			foreach ( $defaults as $key => $value ) {
				if ( !isset( $options[$key] ) ) {
					$options[$key] = $value;
					$needs_update = TRUE;
				}
			}

			// If values are missing update the options
			if ( $needs_update === TRUE ) {
				update_option( 'ipq_options', $options );
			}
		}
	}

	/*
	*	'Checks' all user roles for pre-2.1 rules
	*
	*	@status To be depricated in version 2.3
	*/
	public function update_rules_with_roles() {

		// Construct default roles list to apply
		global $wp_roles;
		$roles = $wp_roles->get_names();
		$applied_roles = array();
		foreach ( $roles as $slug => $name ) {
			array_push( $applied_roles, $slug );
		}

		$args = array (
			'posts_per_page'   	=> -1,
			'post_type'        	=> 'quantity-rule',
			'post_status'      	=> 'publish',
		);

		$rules = get_posts( $args );

		// Loop through rules
		foreach ( $rules as $rule ) {
			// If their rule value is false, apply all roles
			$roles = get_post_meta( $rule->ID, '_roles', true );

			if ( $roles == false ) {
				update_post_meta( $rule->ID, '_roles', $applied_roles, false );
			}
		}
	}

	/*
	*	Remove thumbnail plugin notice meta value
	*/
	public function deactivation_hook() {

		$args = array(
			'meta_key'     => 'wpbo_thumbnail_input_notice',
			'meta_value'   => 'true',
		 );

		$admins = get_users( $args );

		foreach ( $admins as $admin ) {
			delete_user_meta( $admin->ID, 'wpbo_thumbnail_input_notice' );
		}
	}

	public function enqueue_styles() {
		wp_enqueue_style(
				'wcqu_quantity_styles',
				plugins_url( '/assets/css/styles.css', __FILE__ )
		);
	}

	/*
	*	Include JS to round any value that isn't a multiple of the
	*	step up.
	*/
	public function input_value_validation() {

		global $post, $woocommerce;

		// Only display script if we are on a single product or cart page
		if ( is_object( $post ) and $post->post_type == 'product' or is_cart() ) {

			wp_enqueue_script(
				'ipq_validation',
				plugins_url( '/assets/js/ipq_input_value_validation.js', __FILE__ ),
				array( 'jquery' )
			);

			// Only localize parameters for variable products
			if ( ! is_cart() ) {

				// Get the product
				$pro = wc_get_product( $post );

				// Check if variable
				if ( $pro->get_type() == 'variable' ) {

					// See what rules are being applied
					$rule_result = wcqu_get_applied_rule( $pro );

					// If the rule result is inactive, we're done
					if ( $rule_result == 'inactive' or $rule_result == null ) {
						return;

					// Get values for Override, Sitewide and Rule Controlled Products
					} else {
						$values = wcqu_get_value_from_rule( 'all', $pro, $rule_result );
					}

					// Check if the product is out of stock
					$stock = $pro->get_stock_quantity();

					// Check if the product is under stock management and out of stock
					if ( strlen( $stock ) != 0 and $stock <= 0 ) {

						if ( $values['min_oos'] != '' ) {
							$values['min_value'] = $values['min_oos'];
						}

						if ( $values['max_oos'] != '' ) {
							$values['max_value'] = $values['max_oos'];
						}

					}

					// Output admin-ajax.php URL with sma eprotocol as current page
					$params = array (
						'min' => $values['min_value'],
						'max' => $values['max_value'],
						'step' => $values['step']
					);

					wp_localize_script( 'ipq_validation', 'ipq_validation', $params );
				}
			}
		}
	}

	/*
	*	Include Styles
	*/
	public function quantity_styles() {

		if ( is_admin() ) {

			wp_enqueue_style(
				'wcqu_admin_quantity_styles',
				plugins_url( '/assets/css/admin-styles.css', __FILE__ )
			);

			wp_enqueue_script(
				'wcqu_admin_script',
				plugins_url( '/assets/js/ipq_admin_script.js', __FILE__ ),
				array( 'jquery' )
			);
		}
	}

	/*
	*	Set what version of WooCommerce the user has installed
	*/
	public function get_wc_version() {

		if ( ! function_exists( 'get_plugins' ) )
			require_once( ABSPATH . 'wp-admin/includes/plugin.php' );

		$plugin_folder = get_plugins( '/' . 'woocommerce' );
		$plugin_file = 'woocommerce.php';

		if ( isset( $plugin_folder[$plugin_file]['Version'] ) ) {
			$this->wc_version = $plugin_folder[$plugin_file]['Version'];
		} else {
			$this->wc_version = NULL;
		}
	}

	/*
	* 	General Admin Notice to Encourage users to download thumbnail input as well
	*/
	public function thumbnail_plugin_notice() {

		global $current_user;
		$user_id = $current_user->ID;

		// Check if Thumbnail Plugin is activated
		if ( !in_array( 'woocommerce-thumbnail-input-quantities/woocommerce-thumbnail-input-quantity.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) ) {

			// Check if User has Dismissed this message already
			if ( ! get_user_meta( $user_id, 'wpbo_thumbnail_input_notice' ) ) {

				echo '<div class="updated">
			       <p><strong>Notice:</strong> It is highly recommended you install and activate the <a href="http://wordpress.org/plugins/woocommerce-thumbnail-input-quantities/" target="_blank">WooCommerce Thumbnail Input Quantites</a> plugin to display input boxes on products thumbnails. <a href="';

			       // Echo the current url
			       echo site_url() . $_SERVER['REQUEST_URI'];

			       // Echo notice variable as nth get variable with &
			       if ( strpos( $_SERVER['REQUEST_URI'] , '?' ) !== false ) {
				       echo '&wpbo_thumbnail_plugin_dismiss=0';
				   // Echo notice variable as first get variable with ?
			       } else {
				       echo '?wpbo_thumbnail_plugin_dismiss=0';
			       }

			    echo '">Dismiss Notice</a></p></div>';
			}
		}
	}

	/*
	*	Make Admin Notice Dismissable
	*/
	public function thumbnail_plugin_notice_ignore() {
		global $current_user;
		$user_id = $current_user->ID;

		if ( isset($_GET['wpbo_thumbnail_plugin_dismiss']) && '0' == $_GET['wpbo_thumbnail_plugin_dismiss'] ) {
			add_user_meta($user_id, 'wpbo_thumbnail_input_notice', 'true', true);
		}
	}
}

endif;

/**
 * Returns the main instance of WCS to prevent the need to use globals.
 *
 * @since  1.0
 * @return WCS_Supplier
 */
function wc_quantities_and_units() {
	return WC_Quantities_and_Units::instance();
}

// Global for backwards compatibility.
$GLOBALS['WC_Quantities_and_Units'] = wc_quantities_and_units();