Pagination::take() - Code Metrics - Inspection of "fix: Pagination" - seregazhuk/php-pinterest-bot - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#229)

by Sergey

created 2016-12-20 21:06 UTC

Pagination::take() A

↳ Parent: Pagination

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	6
rs	9.4285
c	0
b	0
f	0
cc	1
eloc	3
nc	1
nop	1

<?php

namespace seregazhuk\PinterestBot\Helpers;

use seregazhuk\PinterestBot\Api\Contracts\PaginatedResponse;
use Traversable;

/**
 * Class Pagination
 * Iterate through results of Pinterest Api. By default iterator will return 50 first
 * pagination results. To change this behaviour specify another limit as the
 * constructor param. For no limits specify zero.
 *
 * @package seregazhuk\PinterestBot\Helpers
 */
class Pagination implements \IteratorAggregate
{
    const DEFAULT_LIMIT = 50;

    /**
     * @var int
     */
    protected $limit;

    /**
     * @var array
     */
    protected $bookmarks = [];

    /**
     * @var callable
     */
    protected $callback;

    /**
     * @var int
     */
    protected $offset;

    /**
     * @param int $limit
     */
    public function __construct($limit = self::DEFAULT_LIMIT)
    {
        $this->limit = $limit;
    }

    /**
     * Sets a callback to make requests. Should be a closure
     * that accepts a $bookmarks array as an argument.
     *
     * @param callable $callback
     * @return $this
     */
    public function paginateOver(callable $callback)
    {
        $this->callback = $callback;

        return $this;
    }

    /**
     * Syntax sugar for getIterator method
     * @return Traversable
     */
    public function get()
    {
        return $this->getIterator();
    }

    /**
     * Retrieve an external iterator
     * @return Traversable
     */
    public function getIterator()
    {
        $resultsNum = 0;
        $processed = 0;

        while (true) {
            $results = $this->getCurrentResults();

            if (empty($results)) return;

            foreach ($results as $result) {
$collection = json_decode($data, true);
if ( ! is_array($collection)) {
    throw new \RuntimeException('$collection must be an array.');
}

foreach ($collection as $item) { /** ... */ }
                $processed++;

                if($processed > $this->offset) {
                    yield $result;
                    $resultsNum++;
                }

                if ($this->reachesLimit($resultsNum)) return;
            }

            if ($this->checkEndBookMarks()) return;
        }
    }

    /**
     * @param int $offset
     * @return $this
     */
    public function skip($offset)
    {
        $this->offset = $offset;

        return $this;
    }

    /**
     * @param int $limit
     * @return $this
     */
    public function take($limit)
    {
        $this->limit = $limit;

        return $this;
    }

    /**
     * @return array
     */
    public function toArray()
    {
        return iterator_to_array($this->getIterator());
    }

    /**
     * @return array
     */
    protected function getCurrentResults()
    {
        $callback = $this->callback;

        $response = $callback($this->bookmarks);

        return $this->processResponse($response);
    }

    /**
     * @param PaginatedResponse $response
     * @return array
     */
    protected function processResponse(PaginatedResponse $response)
    {
        if ($response->isEmpty()) return [];

        $this->bookmarks = $response->getBookmarks();

        return $response->getResponseData();
    }

    /**
     * Check if we get results limit in pagination.
     *
     * @param int $resultsNum
     *
     * @return bool
     */
    protected function reachesLimit($resultsNum)
    {
        return $this->limit && $resultsNum >= $this->limit;
    }


    /**
     * Checks for -end- substring in bookmarks. This is pinterest sign of
     * the finished pagination.
     *
     * @return bool
     */
    protected function checkEndBookMarks()
    {
        return !empty($this->bookmarks) && $this->bookmarks[0] == '-end-';
    }
}


1			<?php
2
3			namespace seregazhuk\PinterestBot\Helpers;
4
5			use seregazhuk\PinterestBot\Api\Contracts\PaginatedResponse;
6			use Traversable;
7
8			/**
9			* Class Pagination
10			* Iterate through results of Pinterest Api. By default iterator will return 50 first
11			* pagination results. To change this behaviour specify another limit as the
12			* constructor param. For no limits specify zero.
13			*
14			* @package seregazhuk\PinterestBot\Helpers
15			*/
16			class Pagination implements \IteratorAggregate
17			{
18			const DEFAULT_LIMIT = 50;
19
20			/**
21			* @var int
22			*/
23			protected $limit;
24
25			/**
26			* @var array
27			*/
28			protected $bookmarks = [];
29
30			/**
31			* @var callable
32			*/
33			protected $callback;
34
35			/**
36			* @var int
37			*/
38			protected $offset;
39
40			/**
41			* @param int $limit
42			*/
43			public function __construct($limit = self::DEFAULT_LIMIT)
44			{
45			$this->limit = $limit;
46			}
47
48			/**
49			* Sets a callback to make requests. Should be a closure
50			* that accepts a $bookmarks array as an argument.
51			*
52			* @param callable $callback
53			* @return $this
54			*/
55			public function paginateOver(callable $callback)
56			{
57			$this->callback = $callback;
58
59			return $this;
60			}
61
62			/**
63			* Syntax sugar for getIterator method
64			* @return Traversable
65			*/
66			public function get()
67			{
68			return $this->getIterator();
69			}
70
71			/**
72			* Retrieve an external iterator
73			* @return Traversable
74			*/
75			public function getIterator()
76			{
77			$resultsNum = 0;
78			$processed = 0;
79
80			while (true) {
81			$results = $this->getCurrentResults();
82
83			if (empty($results)) return;
84
85			foreach ($results as $result) {
			0 ignored issues – show Bug introduced 2016-08-16 17:34 UTC by Report Bug Copy Issue Report The expression `$results` of type `array\|boolean` 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...
86			$processed++;
87
88			if($processed > $this->offset) {
89			yield $result;
90			$resultsNum++;
91			}
92
93			if ($this->reachesLimit($resultsNum)) return;
94			}
95
96			if ($this->checkEndBookMarks()) return;
97			}
98			}
99
100			/**
101			* @param int $offset
102			* @return $this
103			*/
104			public function skip($offset)
105			{
106			$this->offset = $offset;
107
108			return $this;
109			}
110
111			/**
112			* @param int $limit
113			* @return $this
114			*/
115			public function take($limit)
116			{
117			$this->limit = $limit;
118
119			return $this;
120			}
121
122			/**
123			* @return array
124			*/
125			public function toArray()
126			{
127			return iterator_to_array($this->getIterator());
128			}
129
130			/**
131			* @return array
132			*/
133			protected function getCurrentResults()
134			{
135			$callback = $this->callback;
136
137			$response = $callback($this->bookmarks);
138
139			return $this->processResponse($response);
140			}
141
142			/**
143			* @param PaginatedResponse $response
144			* @return array
145			*/
146			protected function processResponse(PaginatedResponse $response)
147			{
148			if ($response->isEmpty()) return [];
149
150			$this->bookmarks = $response->getBookmarks();
151
152			return $response->getResponseData();
153			}
154
155			/**
156			* Check if we get results limit in pagination.
157			*
158			* @param int $resultsNum
159			*
160			* @return bool
161			*/
162			protected function reachesLimit($resultsNum)
163			{
164			return $this->limit && $resultsNum >= $this->limit;
165			}
166
167
168			/**
169			* Checks for -end- substring in bookmarks. This is pinterest sign of
170			* the finished pagination.
171			*
172			* @return bool
173			*/
174			protected function checkEndBookMarks()
175			{
176			return !empty($this->bookmarks) && $this->bookmarks[0] == '-end-';
177			}
178			}
179

seregazhuk / php-pinterest-bot

Pull Request — master (#229)

Pagination::take() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like