WC_Shipping - Code Metrics - Inspection of "Shipping zones" - woothemes/woocommerce - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#9826)

by Mike

created 2015-12-18 14:24 UTC

WC_Shipping C

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	344
Duplicated Lines	0.87 %

Coupling/Cohesion

Components	3
Dependencies	5

Metric	Value
wmc	59
lcom	3
cbo	5
dl	3
loc	344
rs	6.1905

17 Methods

Rating	Name	Duplication	Size	Complexity
A	instance()	0	6	2
A	__clone()	0	3	1
A	__wakeup()	0	3	1
A	__construct()	0	7	2
A	init()	0	3	1
B	get_shipping_method_class_names()	0	20	5
A	load_shipping_methods()	0	19	3
A	register_shipping_method()	0	9	3
A	unregister_shipping_methods()	0	3	1
A	get_shipping_methods()	0	6	2
A	get_shipping_classes()	0	7	3
B	get_default_method()	0	17	6
C	calculate_shipping()	3	61	17
D	calculate_shipping_for_package()	0	35	9
A	get_packages()	0	3	1
A	reset_shipping()	0	6	1
A	sort_shipping_methods()	0	4	1

How to fix Duplicated Code Complexity

Duplicated Code

Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.

Common duplication problems, and corresponding solutions are:

If you have the same expression in different places: Extract expression to a method
If you have the same method in different sub-classes: Extract method, and pull up field to the parent class
If you have the same code in unrelated classes: Consider extracting the code to a new class, and injecting that class

Complex Class

Tip: Before tackling complexity, make sure that you eliminate any duplication first. This often can reduce the size of classes significantly.

Complex classes like WC_Shipping often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

While breaking up the class, it is a good idea to analyze how other classes use WC_Shipping, and based on these observations, apply Extract Interface, too.

<?php

/**
 * WooCommerce Shipping Class
 *
 * Handles shipping and loads shipping methods via hooks.
 *
 * @class 		WC_Shipping
 * @version		2.6.0
 * @package		WooCommerce/Classes/Shipping
 * @category	Class
 * @author 		WooThemes
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * WC_Shipping
 */
class WC_Shipping {

	/** @var bool True if shipping is enabled. */
	public $enabled					 = false;

	/** @var array Stores methods loaded into woocommerce. */
	public $shipping_methods         = null;

	/** @var float Stores the cost of shipping */
	public $shipping_total 			 = 0;

	/** @var array Stores an array of shipping taxes. */
	public $shipping_taxes			 = array();

	/** @var array Stores the shipping classes. */
	public $shipping_classes		 = array();

	/** @var array Stores packages to ship and to get quotes for. */
	public $packages				 = array();

	/**
	 * @var WC_Shipping The single instance of the class
	 * @since 2.1
	 */
	protected static $_instance = null;

	/**
	 * Main WC_Shipping Instance.
	 *
	 * Ensures only one instance of WC_Shipping is loaded or can be loaded.
	 *
	 * @since 2.1
	 * @static
	 * @return WC_Shipping Main instance
	 */
	public static function instance() {
		if ( is_null( self::$_instance ) ) {
			self::$_instance = new self();
		}
		return self::$_instance;
	}

	/**
	 * Cloning is forbidden.
	 *
	 * @since 2.1
	 */
	public function __clone() {
		_doing_it_wrong( __FUNCTION__, __( 'Cheatin&#8217; huh?', 'woocommerce' ), '2.1' );
	}

	/**
	 * Unserializing instances of this class is forbidden.
	 *
	 * @since 2.1
	 */
	public function __wakeup() {
		_doing_it_wrong( __FUNCTION__, __( 'Cheatin&#8217; huh?', 'woocommerce' ), '2.1' );
	}

	/**
	 * Initialize shipping.
	 */
	public function __construct() {
		$this->enabled = 'yes' === get_option( 'woocommerce_calc_shipping' );

		if ( $this->enabled ) {
			$this->init();
		}
	}

    /**
     * init function.
     */
    public function init() {
		do_action( 'woocommerce_shipping_init' );
	}

	/**
	 * Shipping methods register themselves by returning their main class name through the woocommerce_shipping_methods filter.
	 * @return array
	 */
	public function get_shipping_method_class_names() {
		// Unique Method ID => Method Class name
		$shipping_methods = apply_filters( 'woocommerce_shipping_methods', array(
			'flat_rate'              => 'WC_Shipping_Flat_Rate',
			'free_shipping'                 => 'WC_Shipping_Free_Shipping',
			'local_pickup'                  => 'WC_Shipping_Local_Pickup'
		) );

		// For backwards compatibility with 2.5.x we load any ENABLED legacy shipping methods here
		$maybe_load_legacy_methods = array( 'flat_rate', 'free_shipping', 'international_delivery', 'local_delivery', 'local_pickup' );

		foreach ( $maybe_load_legacy_methods as $method ) {
			$options = get_option( 'woocommerce_' . $method . '_settings' );
			if ( $options && isset( $options['enabled'] ) && 'yes' === $options['enabled'] ) {
				$shipping_methods[ 'legacy_' . $method ] = 'WC_Shipping_Legacy_' . $method;
			}
		}

		return $shipping_methods;
	}

	/**
	 * Load shipping methods.
	 *
	 * Loads all shipping methods which are hooked in.
	 * If a $package is passed some methods may add themselves conditionally and zones will be used.
	 *
	 * @param array $package
	 * @return array
	 */
	public function load_shipping_methods( $package = array() ) {
		if ( $package ) {

			$shipping_zone          = WC_Shipping_Zones::get_zone_matching_package( $package );
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
			$this->shipping_methods = $shipping_zone->get_shipping_methods();
		} else {
			$this->shipping_methods = array();
		}

		// For the settings in the backend, and for non-shipping zone methods, we still need to load any registered classes here.
		foreach ( $this->get_shipping_method_class_names() as $method_id => $method_class ) {
			$this->register_shipping_method( $method_class );
		}

		// Methods can register themselves manually through this hook if necessary.
		do_action( 'woocommerce_load_shipping_methods', $package );

		// Return loaded methods
		return $this->get_shipping_methods();
	}

	/**
	 * Register a shipping method.
	 *
	 * @param object|string $method Either the name of the method's class, or an instance of the method's class.
	 */
	public function register_shipping_method( $method ) {
		if ( ! is_object( $method ) ) {
			if ( ! class_exists( $method ) ) {
				return false;
			}
			$method = new $method();
		}
		$this->shipping_methods[ $method->id ] = $method;
	}

	/**
	 * Unregister shipping methods.
	 */
	public function unregister_shipping_methods() {
		$this->shipping_methods = array();
	}

	/**
	 * Returns all registered shipping methods.
	 *
	 * @access public
	 * @return array
	 */
	public function get_shipping_methods() {
		if ( is_null( $this->shipping_methods ) ) {
			$this->load_shipping_methods();
		}
		return $this->shipping_methods;
	}

	/**
	 * Get an array of shipping classes.
	 *
	 * @access public
	 * @return array
	 */
	public function get_shipping_classes() {
		if ( empty( $this->shipping_classes ) ) {
			$classes                = get_terms( 'product_shipping_class', array( 'hide_empty' => '0' ) );
			$this->shipping_classes = ! is_wp_error( $classes ) ? $classes : array();
		}
		return $this->shipping_classes;
	}

	/**
	 * Get the default method.
	 * @param  array  $available_methods
	 * @param  boolean $current_chosen_method
	 * @return string
	 */
	private function get_default_method( $available_methods, $current_chosen_method = false ) {
		if ( ! empty( $available_methods ) ) {
			if ( ! empty( $current_chosen_method ) ) {
				if ( isset( $available_methods[ $current_chosen_method ] ) ) {
					return $available_methods[ $current_chosen_method ]->id;
				} else {
					foreach ( $available_methods as $method_key => $method ) {
						if ( strpos( $method->id, $current_chosen_method ) === 0 ) {
							return $method->id;
						}
					}
				}
			}
			return current( $available_methods )->id;
		}
		return '';
	}

	/**
	 * Calculate shipping for (multiple) packages of cart items.
	 *
	 * @param array $packages multi-dimensional array of cart items to calc shipping for
	 */
	public function calculate_shipping( $packages = array() ) {
		$this->shipping_total = null;
		$this->shipping_taxes = array();
		$this->packages       = array();

		if ( ! $this->enabled || empty( $packages ) ) {
			return;
		}

		// Calculate costs for passed packages
		foreach ( $packages as $package_key => $package ) {
			$this->packages[ $package_key ] = $this->calculate_shipping_for_package( $package );
		}

		// Get all chosen methods
		$chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
		$method_counts  = WC()->session->get( 'shipping_method_counts' );

		// Get chosen methods for each package
		foreach ( $this->packages as $i => $package ) {
			$chosen_method    = false;
			$method_count     = false;

			if ( ! empty( $chosen_methods[ $i ] ) ) {
				$chosen_method = $chosen_methods[ $i ];
			}

			if ( ! empty( $method_counts[ $i ] ) ) {
				$method_count = absint( $method_counts[ $i ] );
			}

			if ( sizeof( $package['rates'] ) > 0 ) {

				// If not set, not available, or available methods have changed, set to the DEFAULT option
				if ( empty( $chosen_method ) || ! isset( $package['rates'][ $chosen_method ] ) || $method_count !== sizeof( $package['rates'] ) ) {
					$chosen_method        = apply_filters( 'woocommerce_shipping_chosen_method', $this->get_default_method( $package['rates'], $chosen_method ), $package['rates'] );
					$chosen_methods[ $i ] = $chosen_method;
					$method_counts[ $i ]  = sizeof( $package['rates'] );
					do_action( 'woocommerce_shipping_method_chosen', $chosen_method );
				}

				// Store total costs
				if ( $chosen_method ) {
					$rate = $package['rates'][ $chosen_method ];

					// Merge cost and taxes - label and ID will be the same
					$this->shipping_total += $rate->cost;

					if ( ! empty( $rate->taxes ) && is_array( $rate->taxes ) ) {
						foreach ( array_keys( $this->shipping_taxes + $rate->taxes ) as $key ) {

							$this->shipping_taxes[ $key ] = ( isset( $rate->taxes[$key] ) ? $rate->taxes[$key] : 0 ) + ( isset( $this->shipping_taxes[$key] ) ? $this->shipping_taxes[$key] : 0 );
						}
					}
				}
			}
		}

		// Save all chosen methods (array)
		WC()->session->set( 'chosen_shipping_methods', $chosen_methods );
		WC()->session->set( 'shipping_method_counts', $method_counts );
	}

	/**
	 * Calculate shipping rates for a package,
	 *
	 * Calculates each shipping methods cost. Rates are stored in the session based on the package hash to avoid re-calculation every page load.
	 *
	 * @param array $package cart items
	 * @return array
	 */
	public function calculate_shipping_for_package( $package = array() ) {
		if ( ! $this->enabled || ! $package ) {

			return false;
		}

		// Check if we need to recalculate shipping for this package
		$package_hash   = 'wc_ship_' . md5( json_encode( $package ) . WC_Cache_Helper::get_transient_version( 'shipping' ) );
		$status_options = get_option( 'woocommerce_status_options', array() );
		$stored_rates   = WC()->session->get( 'shipping_for_package' );

		if ( ! is_array( $stored_rates ) || $package_hash !== $stored_rates['package_hash'] || ! empty( $status_options['shipping_debug_mode'] ) ) {
			// Calculate shipping method rates
			$package['rates'] = array();

			foreach ( $this->load_shipping_methods( $package ) as $shipping_method ) {
$collection = json_decode($data, true);
if ( ! is_array($collection)) {
    throw new \RuntimeException('$collection must be an array.');
}

foreach ($collection as $item) { /** ... */ }
				// Shipping instances need an ID
				if ( ! $shipping_method->supports( 'shipping-zones' ) || $shipping_method->get_instance_id() ) {
					$package['rates'] = array_merge( $package['rates'], $shipping_method->get_rates_for_package( $package ) );
				}
			}

			// Filter the calculated rates
			$package['rates'] = apply_filters( 'woocommerce_package_rates', $package['rates'], $package );

			// Store in session to avoid recalculation
			WC()->session->set( 'shipping_for_package', array(
				'package_hash' => $package_hash,
				'rates'        => $package['rates']
			) );
		} else {
			$package['rates'] = $stored_rates['rates'];
		}

		return $package;
	}

	/**
	 * Get packages.
	 * @return array
	 */
	public function get_packages() {
		return $this->packages;
	}

	/**
	 * Reset shipping.
	 *
	 * Reset the totals for shipping as a whole.
	 */
	public function reset_shipping() {
		unset( WC()->session->chosen_shipping_methods );
		$this->shipping_total = null;
		$this->shipping_taxes = array();
		$this->packages = array();
	}

	/**
	 * @deprecated 2.6.0 Was previously used to determine sort order of methods, but this is now controlled by zones and thus unused.
	 */
	public function sort_shipping_methods() {
		_deprecated_function( 'sort_shipping_methods', '2.6', '' );
		return $this->shipping_methods;
	}
}


1		<?php
		1 ignored issue – show Coding Style Compatibility introduced 2015-12-15 16:38 UTC by Report Bug Copy Issue Report For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 21 and the first side effect is on line 15. The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file. The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place. To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1. Loading history...
2		/**
3		* WooCommerce Shipping Class
4		*
5		* Handles shipping and loads shipping methods via hooks.
6		*
7		* @class WC_Shipping
8		* @version 2.6.0
9		* @package WooCommerce/Classes/Shipping
10		* @category Class
11		* @author WooThemes
12		*/
13
14		if ( ! defined( 'ABSPATH' ) ) {
15		exit;
16		}
17
18		/**
19		* WC_Shipping
20		*/
21		class WC_Shipping {
22
23		/** @var bool True if shipping is enabled. */
24		public $enabled = false;
25
26		/** @var array Stores methods loaded into woocommerce. */
27		public $shipping_methods = null;
28
29		/** @var float Stores the cost of shipping */
30		public $shipping_total = 0;
31
32		/** @var array Stores an array of shipping taxes. */
33		public $shipping_taxes = array();
34
35		/** @var array Stores the shipping classes. */
36		public $shipping_classes = array();
37
38		/** @var array Stores packages to ship and to get quotes for. */
39		public $packages = array();
40
41		/**
42		* @var WC_Shipping The single instance of the class
43		* @since 2.1
44		*/
45		protected static $_instance = null;
46
47		/**
48		* Main WC_Shipping Instance.
49		*
50		* Ensures only one instance of WC_Shipping is loaded or can be loaded.
51		*
52		* @since 2.1
53		* @static
54		* @return WC_Shipping Main instance
55		*/
56		public static function instance() {
57		if ( is_null( self::$_instance ) ) {
58		self::$_instance = new self();
59		}
60		return self::$_instance;
61		}
62
63		/**
64		* Cloning is forbidden.
65		*
66		* @since 2.1
67		*/
68		public function __clone() {
69		_doing_it_wrong( __FUNCTION__, __( 'Cheatin’ huh?', 'woocommerce' ), '2.1' );
70		}
71
72		/**
73		* Unserializing instances of this class is forbidden.
74		*
75		* @since 2.1
76		*/
77		public function __wakeup() {
78		_doing_it_wrong( __FUNCTION__, __( 'Cheatin’ huh?', 'woocommerce' ), '2.1' );
79		}
80
81		/**
82		* Initialize shipping.
83		*/
84		public function __construct() {
85		$this->enabled = 'yes' === get_option( 'woocommerce_calc_shipping' );
86
87		if ( $this->enabled ) {
88		$this->init();
89		}
90		}
91
92		/**
93		* init function.
94		*/
95		public function init() {
96		do_action( 'woocommerce_shipping_init' );
97		}
98
99		/**
100		* Shipping methods register themselves by returning their main class name through the woocommerce_shipping_methods filter.
101		* @return array
102		*/
103		public function get_shipping_method_class_names() {
104		// Unique Method ID => Method Class name
105		$shipping_methods = apply_filters( 'woocommerce_shipping_methods', array(
106		'flat_rate' => 'WC_Shipping_Flat_Rate',
107		'free_shipping' => 'WC_Shipping_Free_Shipping',
108		'local_pickup' => 'WC_Shipping_Local_Pickup'
109		) );
110
111		// For backwards compatibility with 2.5.x we load any ENABLED legacy shipping methods here
112		$maybe_load_legacy_methods = array( 'flat_rate', 'free_shipping', 'international_delivery', 'local_delivery', 'local_pickup' );
113
114		foreach ( $maybe_load_legacy_methods as $method ) {
115		$options = get_option( 'woocommerce_' . $method . '_settings' );
116		if ( $options && isset( $options['enabled'] ) && 'yes' === $options['enabled'] ) {
117		$shipping_methods[ 'legacy_' . $method ] = 'WC_Shipping_Legacy_' . $method;
118		}
119		}
120
121		return $shipping_methods;
122		}
123
124		/**
125		* Load shipping methods.
126		*
127		* Loads all shipping methods which are hooked in.
128		* If a $package is passed some methods may add themselves conditionally and zones will be used.
129		*
130		* @param array $package
131		* @return array
132		*/
133		public function load_shipping_methods( $package = array() ) {
134		if ( $package ) {
		0 ignored issues – show Bug Best Practice introduced 2015-12-15 16:38 UTC by Report Bug Copy Issue Report The expression `$package` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
135		$shipping_zone = WC_Shipping_Zones::get_zone_matching_package( $package );
		0 ignored issues – show Documentation introduced 2015-12-15 16:38 UTC by Report Bug Copy Issue Report `$package` is of type `array`, but the function expects a `object`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
136		$this->shipping_methods = $shipping_zone->get_shipping_methods();
137		} else {
138		$this->shipping_methods = array();
139		}
140
141		// For the settings in the backend, and for non-shipping zone methods, we still need to load any registered classes here.
142		foreach ( $this->get_shipping_method_class_names() as $method_id => $method_class ) {
143		$this->register_shipping_method( $method_class );
144		}
145
146		// Methods can register themselves manually through this hook if necessary.
147		do_action( 'woocommerce_load_shipping_methods', $package );
148
149		// Return loaded methods
150		return $this->get_shipping_methods();
151		}
152
153		/**
154		* Register a shipping method.
155		*
156		* @param object\|string $method Either the name of the method's class, or an instance of the method's class.
157		*/
158		public function register_shipping_method( $method ) {
159		if ( ! is_object( $method ) ) {
160		if ( ! class_exists( $method ) ) {
161		return false;
162		}
163		$method = new $method();
164		}
165		$this->shipping_methods[ $method->id ] = $method;
166		}
167
168		/**
169		* Unregister shipping methods.
170		*/
171		public function unregister_shipping_methods() {
172		$this->shipping_methods = array();
173		}
174
175		/**
176		* Returns all registered shipping methods.
177		*
178		* @access public
179		* @return array
180		*/
181		public function get_shipping_methods() {
182		if ( is_null( $this->shipping_methods ) ) {
183		$this->load_shipping_methods();
184		}
185		return $this->shipping_methods;
186		}
187
188		/**
189		* Get an array of shipping classes.
190		*
191		* @access public
192		* @return array
193		*/
194		public function get_shipping_classes() {
195		if ( empty( $this->shipping_classes ) ) {
196		$classes = get_terms( 'product_shipping_class', array( 'hide_empty' => '0' ) );
197		$this->shipping_classes = ! is_wp_error( $classes ) ? $classes : array();
198		}
199		return $this->shipping_classes;
200		}
201
202		/**
203		* Get the default method.
204		* @param array $available_methods
205		* @param boolean $current_chosen_method
206		* @return string
207		*/
208		private function get_default_method( $available_methods, $current_chosen_method = false ) {
209		if ( ! empty( $available_methods ) ) {
210		if ( ! empty( $current_chosen_method ) ) {
211		if ( isset( $available_methods[ $current_chosen_method ] ) ) {
212		return $available_methods[ $current_chosen_method ]->id;
213		} else {
214		foreach ( $available_methods as $method_key => $method ) {
215		if ( strpos( $method->id, $current_chosen_method ) === 0 ) {
216		return $method->id;
217		}
218		}
219		}
220		}
221		return current( $available_methods )->id;
222		}
223		return '';
224		}
225
226		/**
227		* Calculate shipping for (multiple) packages of cart items.
228		*
229		* @param array $packages multi-dimensional array of cart items to calc shipping for
230		*/
231		public function calculate_shipping( $packages = array() ) {
232		$this->shipping_total = null;
233		$this->shipping_taxes = array();
234		$this->packages = array();
235
236		if ( ! $this->enabled \|\| empty( $packages ) ) {
237		return;
238		}
239
240		// Calculate costs for passed packages
241		foreach ( $packages as $package_key => $package ) {
242		$this->packages[ $package_key ] = $this->calculate_shipping_for_package( $package );
243		}
244
245		// Get all chosen methods
246		$chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
247		$method_counts = WC()->session->get( 'shipping_method_counts' );
248
249		// Get chosen methods for each package
250		foreach ( $this->packages as $i => $package ) {
251		$chosen_method = false;
252		$method_count = false;
253
254		if ( ! empty( $chosen_methods[ $i ] ) ) {
255		$chosen_method = $chosen_methods[ $i ];
256		}
257
258		if ( ! empty( $method_counts[ $i ] ) ) {
259		$method_count = absint( $method_counts[ $i ] );
260		}
261
262		if ( sizeof( $package['rates'] ) > 0 ) {
263
264		// If not set, not available, or available methods have changed, set to the DEFAULT option
265		if ( empty( $chosen_method ) \|\| ! isset( $package['rates'][ $chosen_method ] ) \|\| $method_count !== sizeof( $package['rates'] ) ) {
266		$chosen_method = apply_filters( 'woocommerce_shipping_chosen_method', $this->get_default_method( $package['rates'], $chosen_method ), $package['rates'] );
267		$chosen_methods[ $i ] = $chosen_method;
268		$method_counts[ $i ] = sizeof( $package['rates'] );
269		do_action( 'woocommerce_shipping_method_chosen', $chosen_method );
270		}
271
272		// Store total costs
273		if ( $chosen_method ) {
274		$rate = $package['rates'][ $chosen_method ];
275
276		// Merge cost and taxes - label and ID will be the same
277		$this->shipping_total += $rate->cost;
278
279		if ( ! empty( $rate->taxes ) && is_array( $rate->taxes ) ) {
280	View Code Duplication	foreach ( array_keys( $this->shipping_taxes + $rate->taxes ) as $key ) {
		0 ignored issues – show Duplication introduced 2015-11-21 02:57 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
281		$this->shipping_taxes[ $key ] = ( isset( $rate->taxes[$key] ) ? $rate->taxes[$key] : 0 ) + ( isset( $this->shipping_taxes[$key] ) ? $this->shipping_taxes[$key] : 0 );
282		}
283		}
284		}
285		}
286		}
287
288		// Save all chosen methods (array)
289		WC()->session->set( 'chosen_shipping_methods', $chosen_methods );
290		WC()->session->set( 'shipping_method_counts', $method_counts );
291		}
292
293		/**
294		* Calculate shipping rates for a package,
295		*
296		* Calculates each shipping methods cost. Rates are stored in the session based on the package hash to avoid re-calculation every page load.
297		*
298		* @param array $package cart items
299		* @return array
300		*/
301		public function calculate_shipping_for_package( $package = array() ) {
302		if ( ! $this->enabled \|\| ! $package ) {
		0 ignored issues – show Bug Best Practice introduced 2015-11-22 00:57 UTC by Report Bug Copy Issue Report The expression `$package` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
303		return false;
304		}
305
306		// Check if we need to recalculate shipping for this package
307		$package_hash = 'wc_ship_' . md5( json_encode( $package ) . WC_Cache_Helper::get_transient_version( 'shipping' ) );
308		$status_options = get_option( 'woocommerce_status_options', array() );
309		$stored_rates = WC()->session->get( 'shipping_for_package' );
310
311		if ( ! is_array( $stored_rates ) \|\| $package_hash !== $stored_rates['package_hash'] \|\| ! empty( $status_options['shipping_debug_mode'] ) ) {
312		// Calculate shipping method rates
313		$package['rates'] = array();
314
315		foreach ( $this->load_shipping_methods( $package ) as $shipping_method ) {
		0 ignored issues – show Bug introduced 2015-12-15 16:38 UTC by Report Bug Copy Issue Report The expression `$this->load_shipping_methods($package)` of type `null\|array` is not guaranteed to be traversable. How about adding an additional type check? There are different options of fixing this problem. If you want to be on the safe side, you can add an additional type-check: $collection = json_decode($data, true); if ( ! is_array($collection)) { throw new \RuntimeException('$collection must be an array.'); } foreach ($collection as $item) { /** ... / } If you are sure that the expression is traversable, you might want to add a doc comment cast* to improve IDE auto-completion and static analysis: /** @var array $collection / $collection = json_decode($data, true); foreach ($collection as $item) { /* .. / } Mark the issue as a false-positive*: Just hover the remove button, in the top-right corner of this issue for more options. Loading history...
316		// Shipping instances need an ID
317		if ( ! $shipping_method->supports( 'shipping-zones' ) \|\| $shipping_method->get_instance_id() ) {
318		$package['rates'] = array_merge( $package['rates'], $shipping_method->get_rates_for_package( $package ) );
319		}
320		}
321
322		// Filter the calculated rates
323		$package['rates'] = apply_filters( 'woocommerce_package_rates', $package['rates'], $package );
324
325		// Store in session to avoid recalculation
326		WC()->session->set( 'shipping_for_package', array(
327		'package_hash' => $package_hash,
328		'rates' => $package['rates']
329		) );
330		} else {
331		$package['rates'] = $stored_rates['rates'];
332		}
333
334		return $package;
335		}
336
337		/**
338		* Get packages.
339		* @return array
340		*/
341		public function get_packages() {
342		return $this->packages;
343		}
344
345		/**
346		* Reset shipping.
347		*
348		* Reset the totals for shipping as a whole.
349		*/
350		public function reset_shipping() {
351		unset( WC()->session->chosen_shipping_methods );
352		$this->shipping_total = null;
353		$this->shipping_taxes = array();
354		$this->packages = array();
355		}
356
357		/**
358		* @deprecated 2.6.0 Was previously used to determine sort order of methods, but this is now controlled by zones and thus unused.
359		*/
360		public function sort_shipping_methods() {
361		_deprecated_function( 'sort_shipping_methods', '2.6', '' );
362		return $this->shipping_methods;
363		}
364		}
365

woothemes / woocommerce