wpide / App / Helpers / ImageStateData.php

ImageStateData.php in WPIDE – File Manager & Code Editor trunk, at App/Helpers/ImageStateData.php

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1	<?php
2	namespace WPIDE\App\Helpers;
3
4	use Exception;
5	use WPIDE\App\Services\Storage\Filesystem;
6	use WPIDE\App\Services\Storage\LocalFileSystem;
7
8	use const WPIDE\Constants\IMAGE_DATA_DIR;
9
10	class ImageStateData
11	{
12
13	protected static $storage = null;
14
15	public static function init() {
16
17	EmptyDir::create(IMAGE_DATA_DIR);
18	}
19
20	public static function getStateFile($id): string
21	{
22	return $id.'.json';
23	}
24
25	/**
26	* @throws Exception
27	*/
28	public static function save($item, $state): bool
29	{
30
31	self::createStateFile($item->id, $state);
32
33	$dataFile = $item->id.'.'.$item->ext;
34
35	if(!self::imageFileExists($dataFile)) {
36
37	$rootStorage = LocalFileSystem::load();
38	$stream = $rootStorage->readStream($item->path);
39	if (!self::storage()->storeStream('/', $dataFile, $stream['stream'], true)) {
40	return false;
41	}
42	}
43
44	return true;
45	}
46
47	public static function createStateFile($id, $state) {
48
49	$stateFile = self::getStateFile($id);
50
51	if(!self::storage()->storeStreamFromContent('/', $stateFile, $state, true)) {
52	throw new Exception('Cannot create image state file!');
53	}
54	}
55
56	public static function stateFileExists($id): bool
57	{
58	$stateFile = self::getStateFile($id);
59	return self::storage()->fileExists($stateFile);
60	}
61
62	public static function imageFileExists($name): bool
63	{
64	return self::storage()->fileExists($name);
65	}
66
67	/**
68	* @throws Exception
69	*/
70	public static function getState($id): ?array
71	{
72
73	if(!self::stateFileExists($id)) {
74	throw new Exception('Image state file not found');
75	}
76
77	$stateFile = self::getStateFile($id);
78
79	return self::storage()->read($stateFile);
80	}
81
82	/**
83	* @throws Exception
84	*/
85	public static function deleteState($id): bool
86	{
87
88	if(!self::stateFileExists($id)) {
89	throw new Exception('Image state file not found');
90	}
91
92	$stateFile = self::getStateFile($id);
93
94	return self::storage()->deleteFile($stateFile);
95	}
96
97	/**
98	* @throws Exception
99	*/
100	public static function getImage($name): ?array
101	{
102	return self::storage()->readStream($name);
103	}
104
105	protected function getEmptyState(): string
106	{
107
108	return '{
109	"canvas": {
110	"version": "4.6.0",
111	"objects": []
112	},
113	"editor": {
114	"frame": null,
115	"zoom": 1,
116	"activeObjectId": null
117	},
118	"canvasWidth": 3000,
119	"canvasHeight": 2500
120	}';
121	}
122
123	protected static function storage(): Filesystem
124	{
125	if(!self::$storage) {
126	self::$storage = LocalFileSystem::load(IMAGE_DATA_DIR);
127	}
128
129	return self::$storage;
130	}
131
132	}
133