OrderTotalCalculator::calculate() - Code Metrics - silvershop/silvershop-core - Measure and Improve Code Quality continuously with Scrutinizer

OrderTotalCalculator::calculate() F
last analyzed 2023-09-27 17:41 UTC

↳ Parent: OrderTotalCalculator

Complexity

Conditions	14
Paths	769

Size

Total Lines	75
Code Lines	39

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	14
eloc	39
c	1
b	0
f	0
nc	769
nop	0
dl	0
loc	75
rs	2.4208

How to fix Long Method Complexity

<?php

namespace SilverShop\Cart;

use ErrorException;
use Exception;
use Monolog\Logger;
use SilverShop\Model\Order;
use SilverStripe\Core\ClassInfo;
use SilverStripe\Core\Injector\Injectable;
use SilverStripe\ORM\DB;

/**
 * Handles the calculation of order totals.
 *
 * Creates (if necessary) and calculates values for each modifier,
 * and subsequently the total of the order.
 * Caches to prevent recalculation, unless dirty.
 */
class OrderTotalCalculator
{
    use Injectable;

    private static $dependencies = [

        'logger' => '%$SilverShop\Logger',
    ];

    /**
     * @var Logger
     */
    public $logger;

    /**
     * @var Order
     */
    protected $order;

    public function __construct(Order $order)
    {
        $this->order = $order;
    }

    /**
     * @return float
     * @throws Exception
     * @throws \Psr\Container\NotFoundExceptionInterface
     */
    public function calculate()
    {
        $runningtotal = $this->order->SubTotal();
        $sort = 1;
        $existingmodifiers = $this->order->Modifiers();

        $modifierclasses = Order::config()->modifiers;

        //check if modifiers are even in use
        if (!is_array($modifierclasses) || empty($modifierclasses)) {
            return $runningtotal;
        }

        $modifierclasses = array_unique($modifierclasses);

        if (DB::get_conn()->supportsTransactions()) {
            DB::get_conn()->transactionStart();
        }

        set_error_handler(
            function ($severity, $message, $file, $line) {
                throw new ErrorException($message, 0, $severity, $file, $line);
            },
            E_ALL & ~(E_STRICT | E_NOTICE)
        );

        try {
            foreach ($modifierclasses as $ClassName) {
                if ($modifier = $this->getModifier($ClassName)) {
                    $modifier->Sort = $sort;
                    $runningtotal = $modifier->modify($runningtotal);
                    if ($modifier->isChanged()) {
                        $modifier->write();
                    }
                }
                $sort++;
            }
            //clear old modifiers out
            if ($existingmodifiers) {
                foreach ($existingmodifiers as $modifier) {
                    if (!in_array($modifier->ClassName, $modifierclasses)) {
                        $modifier->delete();
                        $modifier->destroy();
                    }
                }
            }
        } catch (Exception $ex) {
            // Rollback the transaction if an error occurred
            if (DB::get_conn()->supportsTransactions()) {
                DB::get_conn()->transactionRollback();
            }
            // throw the exception after rollback
            throw $ex;
        } finally {
            // restore the error handler, no matter what
            restore_error_handler();
        }

        // Everything went through fine, complete the transaction
        if (DB::get_conn()->supportsTransactions()) {
            DB::get_conn()->transactionEnd();
        }

        //prevent negative sales from ever occurring
        if ($runningtotal < 0) {
            $this->logger->error(
                "Order (ID = {$this->order->ID}) was calculated to equal $runningtotal.\n
                Order totals should never be negative!\n
                The order total was set to $0"
            );

            $runningtotal = 0;
        }

        return $runningtotal;
    }

    /**
     * Retrieve a modifier of a given class for the order.
     * Modifier will be retrieved from database if it already exists,
     * or created if it is always required.
     *
     * @param string  $className
     * @param boolean $forcecreate - force the modifier to be created.
     */
    public function getModifier($className, $forcecreate = false)
    {
        if (!ClassInfo::exists($className)) {
            user_error("Modifier class \"$className\" does not exist.");
        }
        //search for existing
        $modifier = $className::get()
            ->filter("OrderID", $this->order->ID)
            ->first();
        if ($modifier) {
            //remove if no longer valid
            if (!$modifier->valid()) {
                //TODO: need to provide feedback message - why modifier was removed
                $modifier->delete();
                $modifier->destroy();
                return null;
            }
            return $modifier;
        }
        $modifier = $className::create();
        if ($modifier->required() || $forcecreate) { //create any modifiers that are required for every order
            $modifier->OrderID = $this->order->ID;
            $modifier->write();
            $this->order->Modifiers()->add($modifier);

            return $modifier;
        }

        return null;
    }
}


1			<?php
2
3			namespace SilverShop\Cart;
4
5			use ErrorException;
6			use Exception;
7			use Monolog\Logger;
8			use SilverShop\Model\Order;
9			use SilverStripe\Core\ClassInfo;
10			use SilverStripe\Core\Injector\Injectable;
11			use SilverStripe\ORM\DB;
12
13			/**
14			* Handles the calculation of order totals.
15			*
16			* Creates (if necessary) and calculates values for each modifier,
17			* and subsequently the total of the order.
18			* Caches to prevent recalculation, unless dirty.
19			*/
20			class OrderTotalCalculator
21			{
22			use Injectable;
23
24			private static $dependencies = [
			0 ignored issues – show introduced 2018-02-08 22:43 UTC by Report Bug Copy Issue Report The private property `$dependencies` is not used, and could be removed. Loading history...
25			'logger' => '%$SilverShop\Logger',
26			];
27
28			/**
29			* @var Logger
30			*/
31			public $logger;
32
33			/**
34			* @var Order
35			*/
36			protected $order;
37
38			public function __construct(Order $order)
39			{
40			$this->order = $order;
41			}
42
43			/**
44			* @return float
45			* @throws Exception
46			* @throws \Psr\Container\NotFoundExceptionInterface
47			*/
48			public function calculate()
49			{
50			$runningtotal = $this->order->SubTotal();
51			$sort = 1;
52			$existingmodifiers = $this->order->Modifiers();
53
54			$modifierclasses = Order::config()->modifiers;
55
56			//check if modifiers are even in use
57			if (!is_array($modifierclasses) \|\| empty($modifierclasses)) {
58			return $runningtotal;
59			}
60
61			$modifierclasses = array_unique($modifierclasses);
62
63			if (DB::get_conn()->supportsTransactions()) {
64			DB::get_conn()->transactionStart();
65			}
66
67			set_error_handler(
68			function ($severity, $message, $file, $line) {
69			throw new ErrorException($message, 0, $severity, $file, $line);
70			},
71			E_ALL & ~(E_STRICT \| E_NOTICE)
72			);
73
74			try {
75			foreach ($modifierclasses as $ClassName) {
76			if ($modifier = $this->getModifier($ClassName)) {
77			$modifier->Sort = $sort;
78			$runningtotal = $modifier->modify($runningtotal);
79			if ($modifier->isChanged()) {
80			$modifier->write();
81			}
82			}
83			$sort++;
84			}
85			//clear old modifiers out
86			if ($existingmodifiers) {
87			foreach ($existingmodifiers as $modifier) {
88			if (!in_array($modifier->ClassName, $modifierclasses)) {
89			$modifier->delete();
90			$modifier->destroy();
91			}
92			}
93			}
94			} catch (Exception $ex) {
95			// Rollback the transaction if an error occurred
96			if (DB::get_conn()->supportsTransactions()) {
97			DB::get_conn()->transactionRollback();
98			}
99			// throw the exception after rollback
100			throw $ex;
101			} finally {
102			// restore the error handler, no matter what
103			restore_error_handler();
104			}
105
106			// Everything went through fine, complete the transaction
107			if (DB::get_conn()->supportsTransactions()) {
108			DB::get_conn()->transactionEnd();
109			}
110
111			//prevent negative sales from ever occurring
112			if ($runningtotal < 0) {
113			$this->logger->error(
114			"Order (ID = {$this->order->ID}) was calculated to equal $runningtotal.\n
115			Order totals should never be negative!\n
116			The order total was set to $0"
117			);
118
119			$runningtotal = 0;
120			}
121
122			return $runningtotal;
123			}
124
125			/**
126			* Retrieve a modifier of a given class for the order.
127			* Modifier will be retrieved from database if it already exists,
128			* or created if it is always required.
129			*
130			* @param string $className
131			* @param boolean $forcecreate - force the modifier to be created.
132			*/
133			public function getModifier($className, $forcecreate = false)
134			{
135			if (!ClassInfo::exists($className)) {
136			user_error("Modifier class \"$className\" does not exist.");
137			}
138			//search for existing
139			$modifier = $className::get()
140			->filter("OrderID", $this->order->ID)
141			->first();
142			if ($modifier) {
143			//remove if no longer valid
144			if (!$modifier->valid()) {
145			//TODO: need to provide feedback message - why modifier was removed
146			$modifier->delete();
147			$modifier->destroy();
148			return null;
149			}
150			return $modifier;
151			}
152			$modifier = $className::create();
153			if ($modifier->required() \|\| $forcecreate) { //create any modifiers that are required for every order
154			$modifier->OrderID = $this->order->ID;
155			$modifier->write();
156			$this->order->Modifiers()->add($modifier);
157
158			return $modifier;
159			}
160
161			return null;
162			}
163			}
164

silvershop / silvershop-core

OrderTotalCalculator::calculate() F last analyzed 2023-09-27 17:41 UTC

Complexity

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Duplication

Importance

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OrderTotalCalculator::calculate() F
last analyzed 2023-09-27 17:41 UTC