|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* Paginator.php |
|
4
|
|
|
* |
|
5
|
|
|
* @copyright More in license.md |
|
6
|
|
|
* @license http://www.ipublikuj.eu |
|
7
|
|
|
* @author Adam Kadlec http://www.ipublikuj.eu |
|
8
|
|
|
* @package iPublikuj:500px! |
|
9
|
|
|
* @subpackage common |
|
10
|
|
|
* @since 5.0 |
|
11
|
|
|
* |
|
12
|
|
|
* @date 07.03.15 |
|
13
|
|
|
*/ |
|
14
|
|
|
|
|
15
|
|
|
namespace IPub\FiveHundredPixel; |
|
16
|
|
|
|
|
17
|
|
|
use Nette; |
|
18
|
|
|
|
|
19
|
|
|
use IPub; |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* Response paginator |
|
23
|
|
|
* |
|
24
|
|
|
* @package iPublikuj:500px! |
|
25
|
|
|
* @subpackage common |
|
26
|
|
|
* |
|
27
|
|
|
* @author Adam Kadlec <[email protected]> |
|
28
|
|
|
* @author Filip Procházka <[email protected]> |
|
29
|
|
|
*/ |
|
30
|
|
|
class Paginator extends Nette\Object implements \Iterator |
|
31
|
|
|
{ |
|
32
|
|
|
const PER_PAGE_MAX = 100; |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* @var ApiCall |
|
36
|
|
|
*/ |
|
37
|
|
|
private $client; |
|
38
|
|
|
|
|
39
|
|
|
/** |
|
40
|
|
|
* @var IPub\OAuth\HttpClient |
|
41
|
|
|
*/ |
|
42
|
|
|
private $httpClient; |
|
43
|
|
|
|
|
44
|
|
|
/** |
|
45
|
|
|
* @var int |
|
46
|
|
|
*/ |
|
47
|
|
|
private $firstPage; |
|
48
|
|
|
|
|
49
|
|
|
/** |
|
50
|
|
|
* @var int |
|
51
|
|
|
*/ |
|
52
|
|
|
private $perPage; |
|
53
|
|
|
|
|
54
|
|
|
/** |
|
55
|
|
|
* @var int|NULL |
|
56
|
|
|
*/ |
|
57
|
|
|
private $maxResults; |
|
58
|
|
|
|
|
59
|
|
|
/** |
|
60
|
|
|
* @var array |
|
61
|
|
|
*/ |
|
62
|
|
|
private $resources = []; |
|
63
|
|
|
|
|
64
|
|
|
/** |
|
65
|
|
|
* @var IPub\OAuth\Api\Response[] |
|
66
|
|
|
*/ |
|
67
|
|
|
private $responses = []; |
|
68
|
|
|
|
|
69
|
|
|
/** |
|
70
|
|
|
* @var int |
|
71
|
|
|
*/ |
|
72
|
|
|
private $itemCursor; |
|
73
|
|
|
|
|
74
|
|
|
/** |
|
75
|
|
|
* @var int |
|
76
|
|
|
*/ |
|
77
|
|
|
private $pageCursor; |
|
78
|
|
|
|
|
79
|
|
|
/** |
|
80
|
|
|
* @param ApiCall $client |
|
81
|
|
|
* @param IPub\OAuth\Api\Response $response |
|
82
|
|
|
*/ |
|
83
|
|
|
public function __construct(ApiCall $client, IPub\OAuth\Api\Response $response) |
|
84
|
|
|
{ |
|
85
|
|
|
$this->client = $client; |
|
86
|
|
|
|
|
87
|
|
|
$this->httpClient = $client->getHttpClient(); |
|
88
|
|
|
$resource = $response->toArray(); |
|
89
|
|
|
$resource = $this->findCollection(current($resource)); |
|
90
|
|
|
|
|
91
|
|
|
$params = $response->request->getParameters(); |
|
92
|
|
|
$this->firstPage = isset($params['page']) ? (int) max($params['page'], 1) : 1; |
|
93
|
|
|
$this->perPage = isset($params['per_page']) ? (int) $params['per_page'] : count($resource); |
|
94
|
|
|
|
|
95
|
|
|
$this->responses[$this->firstPage] = $response; |
|
96
|
|
|
$this->resources[$this->firstPage] = $resource; |
|
97
|
|
|
} |
|
98
|
|
|
|
|
99
|
|
|
/** |
|
100
|
|
|
* If you setup maximum number of results, the pagination will stop after fetching the desired number. |
|
101
|
|
|
* If you have per_page=50 and wan't to fetch 200 results, it will make 4 requests in total. |
|
102
|
|
|
* |
|
103
|
|
|
* @param int $maxResults |
|
104
|
|
|
* |
|
105
|
|
|
* @return $this |
|
106
|
|
|
*/ |
|
107
|
|
|
public function limitResults($maxResults) |
|
108
|
|
|
{ |
|
109
|
|
|
$this->maxResults = (int)$maxResults; |
|
110
|
|
|
|
|
111
|
|
|
return $this; |
|
112
|
|
|
} |
|
113
|
|
|
|
|
114
|
|
|
public function rewind() |
|
115
|
|
|
{ |
|
116
|
|
|
$this->itemCursor = 0; |
|
117
|
|
|
$this->pageCursor = $this->firstPage; |
|
118
|
|
|
} |
|
119
|
|
|
|
|
120
|
|
|
public function valid() |
|
121
|
|
|
{ |
|
122
|
|
|
return isset($this->resources[$this->pageCursor][$this->itemCursor]) |
|
123
|
|
|
&& ! $this->loadedMaxResults(); |
|
124
|
|
|
} |
|
125
|
|
|
|
|
126
|
|
|
/** |
|
127
|
|
|
* @return bool |
|
128
|
|
|
*/ |
|
129
|
|
|
public function loadedMaxResults() |
|
130
|
|
|
{ |
|
131
|
|
|
if ($this->maxResults === NULL) { |
|
132
|
|
|
return FALSE; |
|
133
|
|
|
} |
|
134
|
|
|
|
|
135
|
|
|
return $this->maxResults <= ($this->itemCursor + ($this->pageCursor - $this->firstPage) * $this->perPage); |
|
136
|
|
|
} |
|
137
|
|
|
|
|
138
|
|
|
public function current() |
|
139
|
|
|
{ |
|
140
|
|
|
if (!$this->valid()) { |
|
141
|
|
|
return NULL; |
|
142
|
|
|
} |
|
143
|
|
|
|
|
144
|
|
|
return Nette\Utils\ArrayHash::from($this->resources[$this->pageCursor][$this->itemCursor]); |
|
145
|
|
|
} |
|
146
|
|
|
|
|
147
|
|
|
public function next() |
|
148
|
|
|
{ |
|
149
|
|
|
$this->itemCursor++; |
|
150
|
|
|
|
|
151
|
|
|
// if cursor points at result of next page, try to load it |
|
152
|
|
|
if ($this->itemCursor < $this->perPage || $this->itemCursor % $this->perPage !== 0) { |
|
153
|
|
|
return; |
|
154
|
|
|
} |
|
155
|
|
|
|
|
156
|
|
|
if (isset($this->resources[$this->pageCursor + 1])) { // already loaded |
|
157
|
|
|
$this->itemCursor = 0; |
|
158
|
|
|
$this->pageCursor++; |
|
159
|
|
|
|
|
160
|
|
|
return; |
|
161
|
|
|
} |
|
162
|
|
|
|
|
163
|
|
|
if ($this->loadedMaxResults()) { |
|
164
|
|
|
return; |
|
165
|
|
|
} |
|
166
|
|
|
|
|
167
|
|
|
try { |
|
168
|
|
|
$prevRequest = $this->responses[$this->pageCursor]->getRequest(); |
|
169
|
|
|
|
|
170
|
|
|
$params = $this->responses[$this->pageCursor]->request->getParameters(); |
|
171
|
|
|
$params['page'] = isset($params['page']) ? (int) max($params['page'], 1) + 1 : 1; |
|
172
|
|
|
|
|
173
|
|
|
$response = $this->httpClient->makeRequest( |
|
174
|
|
|
$prevRequest->copyWithUrl($this->client->getConfig()->createUrl('api', 'rest', $params)), |
|
175
|
|
|
'HMAC-SHA1' |
|
176
|
|
|
); |
|
177
|
|
|
|
|
178
|
|
|
$resource = $response->toArray(); |
|
179
|
|
|
$resource = $this->findCollection(current($resource)); |
|
180
|
|
|
|
|
181
|
|
|
$this->itemCursor = 0; |
|
182
|
|
|
$this->pageCursor++; |
|
183
|
|
|
$this->responses[$this->pageCursor] = $response; |
|
184
|
|
|
$this->resources[$this->pageCursor] = $resource; |
|
185
|
|
|
|
|
186
|
|
|
} catch (\Exception $e) { |
|
187
|
|
|
$this->itemCursor--; // revert back so the user can continue if needed |
|
188
|
|
|
} |
|
189
|
|
|
} |
|
190
|
|
|
|
|
191
|
|
|
public function key() |
|
192
|
|
|
{ |
|
193
|
|
|
return $this->itemCursor + ($this->pageCursor - 1) * $this->perPage; |
|
194
|
|
|
} |
|
195
|
|
|
|
|
196
|
|
|
/** |
|
197
|
|
|
* @param array $response |
|
198
|
|
|
* |
|
199
|
|
|
* @return array |
|
200
|
|
|
*/ |
|
201
|
|
|
private function findCollection(array $response) |
|
202
|
|
|
{ |
|
203
|
|
|
foreach($response as $item) { |
|
204
|
|
|
if (is_array($item)) { |
|
205
|
|
|
return $item; |
|
206
|
|
|
} |
|
207
|
|
|
} |
|
208
|
|
|
} |
|
209
|
|
|
} |
iPublikuj /
500px
