Kohana_Jam_Price::in()   B
last analyzed

Complexity

Conditions 6
Paths 5

Size

Total Lines 20

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 8
CRAP Score 6

Importance

Changes 0
Metric Value
dl 0
loc 20
ccs 8
cts 8
cp 1
rs 8.9777
c 0
b 0
f 0
cc 6
nc 5
nop 2
crap 6
1
<?php defined('SYSPATH') OR die('No direct script access.');
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3
use OpenBuildings\Monetary\Monetary;
4
5
/**
6
 * @package    Openbuildings\Jam
7
 * @author     Ivan Kerin <[email protected]>
8
 * @copyright  (c) 2013 OpenBuildings Ltd.
9
 * @license    http://spdx.org/licenses/BSD-3-Clause
10
 */
11
class Kohana_Jam_Price implements Serializable {
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13
	const EQUAL_TO = '=';
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	const GREATER_THAN = '>';
15
	const LESS_THAN = '<';
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	const GREATER_THAN_OR_EQUAL_TO = '>=';
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	const LESS_THAN_OR_EQUAL_TO = '<=';
18
19
	const EPSILON = 0.000001;
20
21 1
	public static function min(array $prices)
22
	{
23 1
		$min = reset($prices);
24
25 1
		foreach (array_slice($prices, 1) as $price) 
26
		{
27 1
			if ($price->is(Jam_Price::LESS_THAN, $min)) 
28
			{
29 1
				$min = $price;
30
			}
31
		}
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33 1
		return $min;
34
	}
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36 1
	public static function max(array $prices)
37
	{
38 1
		$max = reset($prices);
39
40 1
		foreach (array_slice($prices, 1) as $price) 
41
		{
42 1
			if ($price->is(Jam_Price::GREATER_THAN, $max)) 
43
			{
44 1
				$max = $price;
45
			}
46
		}
47
48 1
		return $max;
49
	}
50
51 5
	public static function ceil($amount, $precision)
52
	{
53 5
		$fraction = pow(10, $precision);
54
55 5
		return ceil($fraction * $amount) / $fraction;
56
	}
57
58 1
	public static function sum(array $prices, $currency, $monetary = NULL, $display_currency = NULL, $ceil_on_convert = FALSE)
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	{
60 1
		$amount = 0;
61
62 1
		foreach ($prices as $price) 
63
		{
64 1
			if ( ! ($price instanceof Jam_Price))
65
			{
66 1
				$amount += (float) $price;
67
			}
68 1
			elseif ($price->currency() == $currency) 
69
			{
70 1
				$amount += $price->amount();
71
			}
72
			else
73
			{
74 1
				$amount += $price->in($currency, $monetary);
75
			}
76
		}
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78 1
		return new Jam_Price($amount, $currency, $monetary, $display_currency, $ceil_on_convert);
79
	}
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	protected $_amount = 0;
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	protected $_currency;
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	protected $_monetary;
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	protected $_ceil_on_convert = FALSE;
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	protected $_display_currency;
86
	
87 3
	public function ceil_on_convert($ceil_on_convert = NULL)
88
	{
89 3
		if ($ceil_on_convert !== NULL)
90
		{
91 3
			$this->_ceil_on_convert = $ceil_on_convert;
92 3
			return $this;
93
		}
94 3
		return $this->_ceil_on_convert;
95
	}
96
	
97 2
	public function display_currency($display_currency = NULL)
98
	{
99 2
		if ($display_currency !== NULL)
100
		{
101 2
			$this->_display_currency = $display_currency;
102 2
			return $this;
103
		}
104 1
		return $this->_display_currency;
105
	}
106
	
107
	/**
108
	 * Getter / Setter of amount, casts to float
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	 * @param  float $amount 
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	 * @return float|$this         
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	 */
112 3
	public function amount($amount = NULL)
113
	{
114 3
		if ($amount !== NULL)
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		{
116 3
			$this->_amount = (float) $amount;
0 ignored issues
show
Documentation Bug introduced by
The property $_amount was declared of type integer, but (double) $amount is of type double. Maybe add a type cast?

This check looks for assignments to scalar types that may be of the wrong type.

To ensure the code behaves as expected, it may be a good idea to add an explicit type cast.

$answer = 42;

$correct = false;

$correct = (bool) $answer;
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117 3
			return $this;
118
		}
119 2
		return $this->_amount;
120
	}
121
	
122
	/**
123
	 * Getter / Setter
124
	 * @param  string $currency 
125
	 * @return string|$this           
126
	 */
127 3
	public function currency($currency = NULL)
128
	{
129 3
		if ($currency !== NULL)
130
		{
131 3
			$this->_currency = $currency;
132 3
			return $this;
133
		}
134 3
		return $this->_currency;
135
	}
136
	
137
	/**
138
	 * Getter / Setter, defaults to Monetary::instance()
139
	 * @param  OpenBuildings\Monetary\Monetary $monetary 
140
	 * @return OpenBuildings\Monetary\Monetary|$this
141
	 */
142 3
	public function monetary($monetary = NULL)
143
	{
144 3
		if ($monetary !== NULL)
145
		{
146 3
			$this->_monetary = $monetary;
147 3
			return $this;
148
		}
149
150 3
		if ( ! $this->_monetary) 
151
		{
152
			$this->_monetary = Monetary::instance();
153
		}
154
155 3
		return $this->_monetary;
156
	}
157
158 3
	public function __construct($amount, $currency, $monetary = NULL, $display_currency = NULL, $ceil_on_convert = FALSE)
159
	{
160 3
		$this->amount($amount);
161 3
		$this->currency($currency);
162 3
		$this->display_currency($display_currency);
163 3
		$this->monetary($monetary);
164 3
		$this->ceil_on_convert($ceil_on_convert);
165 3
	}
166
167
	/**
168
	 * Use as_string method
169
	 * @return string 
170
	 */
171 2
	public function __toString()
172
	{
173 2
		return $this->as_string();
174
	}
175
176
	/**
177
	 * Use number_format with 2 digits after the decimal dot
178
	 * @return string 
179
	 */
180 2
	public function as_string($currency = NULL)
181
	{
182 2
		return number_format($this->in($currency), 2, '.', '');	
183
	}
184
185
	/**
186
	 * Use Monetary's "format" method
187
	 * @param  string $currency optionally convert to another currency
188
	 * @return string
189
	 */
190 1
	public function humanize($currency = NULL)
191
	{
192 1
		$currency = $currency ?: ($this->display_currency() ?: $this->currency());
193
194 1
		return $this->monetary()->format($this->in($currency), $currency);
0 ignored issues
show
Bug introduced by
The method format does only exist in OpenBuildings\Monetary\Monetary, but not in Kohana_Jam_Price.

It seems like the method you are trying to call exists only in some of the possible types.

Let’s take a look at an example:

class A
{
    public function foo() { }
}

class B extends A
{
    public function bar() { }
}

/**
 * @param A|B $x
 */
function someFunction($x)
{
    $x->foo(); // This call is fine as the method exists in A and B.
    $x->bar(); // This method only exists in B and might cause an error.
}

Available Fixes

  1. Add an additional type-check:

    /**
     * @param A|B $x
     */
    function someFunction($x)
    {
        $x->foo();
    
        if ($x instanceof B) {
            $x->bar();
        }
    }
    
  2. Only allow a single type to be passed if the variable comes from a parameter:

    function someFunction(B $x) { /** ... */ }
    
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195
	}
196
197
	/**
198
	 * Replace HTML entities in humanize
199
	 * @param  string $currency optionally convert to another currency
200
	 * @return string
201
	 */
202 1
	public function as_html($currency = NULL)
203
	{
204 1
		return HTML::entities($this->humanize($currency));
205
	}
206
207
	/**
208
	 * Perform price arithmetic - add / remove prices with correct currency convertions
209
	 * @return $this
210
	 */
211 1
	public function add($price)
0 ignored issues
show
Unused Code introduced by
The parameter $price is not used and could be removed.

This check looks from parameters that have been defined for a function or method, but which are not used in the method body.

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212
	{
213 1
		$prices = func_get_args();
214 1
		array_unshift($prices, $this);
215
216 1
		return Jam_Price::sum($prices, $this->currency(), $this->monetary(), $this->display_currency(), $this->ceil_on_convert());
0 ignored issues
show
Bug introduced by
It seems like $this->ceil_on_convert() targeting Kohana_Jam_Price::ceil_on_convert() can also be of type this<Kohana_Jam_Price>; however, Kohana_Jam_Price::sum() does only seem to accept boolean, maybe add an additional type check?

This check looks at variables that are passed out again to other methods.

If the outgoing method call has stricter type requirements than the method itself, an issue is raised.

An additional type check may prevent trouble.

Loading history...
217
	}
218
219
	/**
220
	 * Myltiply by a value
221
	 * @param  mixed $value
222
	 * @return Jam_Price
223
	 */
224 1
	public function multiply_by($value)
225
	{
226 1
		return new Jam_Price($this->amount() * $value, $this->currency(), $this->monetary(), $this->display_currency(), $this->ceil_on_convert());
0 ignored issues
show
Bug introduced by
It seems like $this->ceil_on_convert() targeting Kohana_Jam_Price::ceil_on_convert() can also be of type this<Kohana_Jam_Price>; however, Kohana_Jam_Price::__construct() does only seem to accept boolean, maybe add an additional type check?

This check looks at variables that are passed out again to other methods.

If the outgoing method call has stricter type requirements than the method itself, an issue is raised.

An additional type check may prevent trouble.

Loading history...
227
	}
228
229
	/**
230
	 * Convert the price to a different currency
231
	 * @param  string $currency 
232
	 * @return Jam_Price
233
	 */
234 1
	public function convert_to($currency)
235
	{
236 1
		return new Jam_Price($this->in($currency), $currency, $this->monetary(), $this->display_currency(), $this->ceil_on_convert());
0 ignored issues
show
Bug introduced by
It seems like $this->ceil_on_convert() targeting Kohana_Jam_Price::ceil_on_convert() can also be of type this<Kohana_Jam_Price>; however, Kohana_Jam_Price::__construct() does only seem to accept boolean, maybe add an additional type check?

This check looks at variables that are passed out again to other methods.

If the outgoing method call has stricter type requirements than the method itself, an issue is raised.

An additional type check may prevent trouble.

Loading history...
237
	}
238
239
	/**
240
	 * Perform price comparation, e.g. =, >, <, => or =<. Performs currency conversion if nesessary
241
	 * @return boolean 
242
	 * @param string $operator 
243
	 * @param mixed value 
244
	 */
245 2
	public function is($operator, $value)
246
	{
247 2
		if ($value instanceof Jam_Price) 
248
		{
249 2
			$value = $value->in($this->currency());
0 ignored issues
show
Bug introduced by
It seems like $this->currency() targeting Kohana_Jam_Price::currency() can also be of type object<Kohana_Jam_Price>; however, Kohana_Jam_Price::in() does only seem to accept string|null, maybe add an additional type check?

This check looks at variables that are passed out again to other methods.

If the outgoing method call has stricter type requirements than the method itself, an issue is raised.

An additional type check may prevent trouble.

Loading history...
250
		}
251
252
		switch ($operator) 
253
		{
254 2
			case Jam_Price::EQUAL_TO:
255 1
				$result = (abs($this->amount() - $value) < Jam_Price::EPSILON);
256 1
			break;
257 2
			case Jam_Price::GREATER_THAN:
258 1
				$result = (($this->amount() - $value) >= Jam_Price::EPSILON);
259 1
			break;
260 2
			case Jam_Price::LESS_THAN:
261 1
				$result = (($value - $this->amount()) >= Jam_Price::EPSILON);
262 1
			break;
263 2
			case Jam_Price::GREATER_THAN_OR_EQUAL_TO:
264 1
				$result = (($value - $this->amount()) < Jam_Price::EPSILON);
265 1
			break;
266 2
			case Jam_Price::LESS_THAN_OR_EQUAL_TO:
267 1
				$result = (($this->amount() - $value) < Jam_Price::EPSILON);
268 1
			break;
269
			default;
270 1
				throw new Kohana_Exception('Operator not supported :operator', array(':operator' => $operator));
271
		}
272 1
		return $result;
273
	}
274
275
	/**
276
	 * Display the amount in a currency
277
	 * @param  string|null $currency
278
	 * @param  OpenBuildings\Monetary\Monetary|null $monetary
279
	 * @return float
280
	 */
281 2
	public function in($currency = NULL, $monetary = NULL)
282
	{
283 2
		if ( ! $currency OR $currency == $this->currency())
284
		{
285 2
			return $this->amount();
0 ignored issues
show
Bug Compatibility introduced by
The expression $this->amount(); of type Kohana_Jam_Price|integer adds the type Kohana_Jam_Price to the return on line 285 which is incompatible with the return type documented by Kohana_Jam_Price::in of type double.
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286
		}
287
		else
288
		{
289 2
			$monetary = $monetary ?: $this->monetary();
290
291 2
			$amount = $monetary->convert($this->amount(), $this->currency(), $currency);
0 ignored issues
show
Documentation introduced by
$this->amount() is of type this<Kohana_Jam_Price>|integer, but the function expects a double.

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...
Bug introduced by
It seems like $this->currency() targeting Kohana_Jam_Price::currency() can also be of type object<Kohana_Jam_Price>; however, OpenBuildings\Monetary\Monetary::convert() does only seem to accept string|null, maybe add an additional type check?

This check looks at variables that are passed out again to other methods.

If the outgoing method call has stricter type requirements than the method itself, an issue is raised.

An additional type check may prevent trouble.

Loading history...
Bug introduced by
The method convert does only exist in OpenBuildings\Monetary\Monetary, but not in Kohana_Jam_Price.

It seems like the method you are trying to call exists only in some of the possible types.

Let’s take a look at an example:

class A
{
    public function foo() { }
}

class B extends A
{
    public function bar() { }
}

/**
 * @param A|B $x
 */
function someFunction($x)
{
    $x->foo(); // This call is fine as the method exists in A and B.
    $x->bar(); // This method only exists in B and might cause an error.
}

Available Fixes

  1. Add an additional type-check:

    /**
     * @param A|B $x
     */
    function someFunction($x)
    {
        $x->foo();
    
        if ($x instanceof B) {
            $x->bar();
        }
    }
    
  2. Only allow a single type to be passed if the variable comes from a parameter:

    function someFunction(B $x) { /** ... */ }
    
Loading history...
292
293 2
			if ($this->ceil_on_convert() !== FALSE)
294
			{
295 2
				$amount = static::ceil($amount, $this->ceil_on_convert() === TRUE ? 0 : $this->ceil_on_convert());
296
			}
297
298 2
			return $amount;
299
		}
300
	}
301
302
	/**
303
	 * implement Serializable
304
	 * @return string
305
	 */
306 1
	public function serialize()
307
	{
308 1
		return serialize(array($this->amount(), $this->currency(), $this->display_currency(), $this->ceil_on_convert()));
309
	}
310
311
	/**
312
	 * implement Serializable
313
	 * @param string $data 
314
	 */
315 1
	public function unserialize($data)
316
	{
317 1
		$data = unserialize($data);
318
319 1
		$this->amount($data[0]);
320 1
		$this->currency($data[1]);
321 1
		$this->display_currency($data[2]);
322 1
		$this->ceil_on_convert($data[3]);
323 1
		$this->monetary(Monetary::instance());
324 1
	}
325
}
326