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;

}

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' );

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 = get_product( $post );

// Check if variable

if ( $pro->product_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);

}

}