Pagination::getIterator() - Code Metrics - seregazhuk/php-pinterest-bot - Measure and Improve Code Quality continuously with Scrutinizer

Pagination::getIterator() A
last analyzed 2019-11-07 14:56 UTC

↳ Parent: Pagination

Complexity

Conditions	2
Paths	2

Size

Total Lines	7
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes	4
Bugs	2	Features	1

Metric	Value
cc	2
eloc	3
c	4
b	2
f	1
nc	2
nop	0
dl	0
loc	7
rs	10

<?php

namespace seregazhuk\PinterestBot\Helpers;

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

/**
 * 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 callable
     */
    protected $callback;

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

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

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

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

    /**
     * Sets a callback to make requests. Callback should return PaginatedResponse object.
     *
     * @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()
    {
        if (empty($this->callback)) {
            return new EmptyIterator();
        }

        return $this->processCallback();
    }

    /**
     * @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());
    }

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

    /**
     * @return \Generator|void
     */
    protected function processCallback()
    {
        $this->resultsNum = 0;
        $this->processed = 0;

        while (true) {
            /** @var PaginatedResponse $response */
            $response = call_user_func($this->callback);

            if ($response->isEmpty()) {
                return;
            }

            foreach ($this->getResultsFromResponse($response) as $result) {
                $this->processed++;

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

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

            if (!$response->hasBookmarks()) {
                return;
            }
        }
    }

    /**
     * @param $response
     * @return array
     */
    protected function getResultsFromResponse(PaginatedResponse $response)
    {
        $results = $response->getResponseData();

        return $results === false ? [] : $results;

    }
}


1			<?php
2
3			namespace seregazhuk\PinterestBot\Helpers;
4
5			use Traversable;
6			use EmptyIterator;
7			use IteratorAggregate;
8			use seregazhuk\PinterestBot\Api\Contracts\PaginatedResponse;
9
10			/**
11			* Class Pagination
12			* Iterate through results of Pinterest Api. By default iterator will return 50 first
13			* pagination results. To change this behaviour specify another limit as the
14			* constructor param. For no limits specify zero.
15			*
16			* @package seregazhuk\PinterestBot\Helpers
17			*/
18			class Pagination implements IteratorAggregate
19			{
20			const DEFAULT_LIMIT = 50;
21
22			/**
23			* @var int
24			*/
25			protected $limit;
26
27			/**
28			* @var callable
29			*/
30			protected $callback;
31
32			/**
33			* @var int
34			*/
35			protected $offset;
36
37			/**
38			* @var int
39			*/
40			protected $resultsNum;
41
42			/**
43			* @var int
44			*/
45			protected $processed;
46
47			/**
48			* @param int $limit
49			*/
50			public function __construct($limit = self::DEFAULT_LIMIT)
51			{
52			$this->limit = $limit;
53			}
54
55			/**
56			* Sets a callback to make requests. Callback should return PaginatedResponse object.
57			*
58			* @param callable $callback
59			* @return $this
60			*/
61			public function paginateOver(callable $callback)
62			{
63			$this->callback = $callback;
64
65			return $this;
66			}
67
68			/**
69			* Syntax sugar for getIterator method
70			* @return Traversable
71			*/
72			public function get()
73			{
74			return $this->getIterator();
75			}
76
77			/**
78			* Retrieve an external iterator
79			* @return Traversable
80			*/
81			public function getIterator()
82			{
83			if (empty($this->callback)) {
84			return new EmptyIterator();
85			}
86
87			return $this->processCallback();
88			}
89
90			/**
91			* @param int $offset
92			* @return $this
93			*/
94			public function skip($offset)
95			{
96			$this->offset = $offset;
97
98			return $this;
99			}
100
101			/**
102			* @param int $limit
103			* @return $this
104			*/
105			public function take($limit)
106			{
107			$this->limit = $limit;
108
109			return $this;
110			}
111
112			/**
113			* @return array
114			*/
115			public function toArray()
116			{
117			return iterator_to_array($this->getIterator());
118			}
119
120			/**
121			* Check if we execGet results limit in pagination.
122			*
123			* @param int $resultsNum
124			*
125			* @return bool
126			*/
127			protected function reachesLimit($resultsNum)
128			{
129			return $this->limit && $resultsNum >= $this->limit;
130			}
131
132			/**
133			* @return \Generator\|void
134			*/
135			protected function processCallback()
136			{
137			$this->resultsNum = 0;
138			$this->processed = 0;
139
140			while (true) {
141			/** @var PaginatedResponse $response */
142			$response = call_user_func($this->callback);
143
144			if ($response->isEmpty()) {
145			return;
146			}
147
148			foreach ($this->getResultsFromResponse($response) as $result) {
149			$this->processed++;
150
151			if ($this->processed > $this->offset) {
152			yield $result;
153			$this->resultsNum++;
154			}
155
156			if ($this->reachesLimit($this->resultsNum)) {
157			return;
158			}
159			}
160
161			if (!$response->hasBookmarks()) {
162			return;
163			}
164			}
165			}
166
167			/**
168			* @param $response
169			* @return array
170			*/
171			protected function getResultsFromResponse(PaginatedResponse $response)
172			{
173			$results = $response->getResponseData();
174
175			return $results === false ? [] : $results;
			0 ignored issues – show Bug Best Practice introduced 2018-01-12 15:43 UTC by Report Bug Copy Issue Report The expression `return $results === false ? array() : $results` also could return the type `true` which is incompatible with the documented return type `array`. Loading history...
176			}
177			}
178

seregazhuk / php-pinterest-bot

Pagination::getIterator() A last analyzed 2019-11-07 14:56 UTC

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Pagination::getIterator() A
last analyzed 2019-11-07 14:56 UTC