wp-to-buffer / lib / social / includes / class-media-library.php

class-media-library.php in Social Media Auto Poster – Schedule & Publish to Buffer 6.2.5, at lib/social/includes/class-media-library.php

195 lines 4.9 KB

Raw Download Zip

1	<?php
2	/**
3	* Media Library class.
4	*
5	* @package WPZinc\Social
6	* @author WP Zinc
7	*/
8
9	namespace WPZinc\Social;
10
11	/**
12	* Handles uploading and deleting images generated by this Plugin.
13	*
14	* @package WPZinc\Social
15	* @author WP Zinc
16	* @version 4.2.0
17	*/
18	class Media_Library {
19
20	/**
21	* Holds the base object.
22	*
23	* @since 4.2.0
24	*
25	* @var object
26	*/
27	public $base;
28
29	/**
30	* Constructor.
31	*
32	* @since 4.2.0
33	*
34	* @param object $base Base Plugin Class.
35	*/
36	public function __construct( $base ) {
37
38	// Store base class.
39	$this->base = $base;
40
41	}
42
43	/**
44	* Uploads the given image path and file into the WordPress Media Library
45	*
46	* @since 4.2.0
47	*
48	* @param string $source Source Path and Filename.
49	* @param int $post_id Post ID.
50	* @param string\|false $filename Target Filename to save source as.
51	* @param string $title Image Title (optional).
52	* @param string $caption Image Caption (optional).
53	* @param string $alt_tag Image Alt Tag (optional).
54	* @param string $description Image Description (optional).
55	* @return \WP_Error\|int \WP_Error \| Image ID
56	*/
57	public function upload_local_image( $source, $post_id = 0, $filename = false, $title = '', $caption = '', $alt_tag = '', $description = '' ) {
58
59	// If GD support is available, enable it now.
60	if ( $this->is_gd_available() ) {
61	add_filter( 'wp_image_editors', array( $this, 'enable_gd_image_support' ) );
62	}
63
64	// Load required image / media classes and functions.
65	require_once ABSPATH . 'wp-admin/includes/image.php';
66	require_once ABSPATH . 'wp-admin/includes/file.php';
67	require_once ABSPATH . 'wp-admin/includes/media.php';
68
69	// Get image type.
70	$type = getimagesize( $source );
71	if ( ! isset( $type['mime'] ) ) {
72	return new \WP_Error(
73	sprintf(
74	/* translators: Image Source Path and Filename */
75	__( 'Could not identify MIME type of source image %s. Is this an image?', 'wp-to-buffer' ),
76	$source
77	)
78	);
79	}
80	list( $type, $ext ) = explode( '/', $type['mime'] );
81	unset( $type );
82
83	// Define image filename.
84	$file_array['name'] = ( $filename !== false ? $filename : basename( $source ) );
85	$file_array['tmp_name'] = $source;
86
87	// Add the extension to the filename if it doesn't exist.
88	// This happens if we streamed an image URL e.g. http://placehold.it/400x400.
89	if ( strpos( $file_array['name'], '.' . $ext ) === false ) {
90	$file_array['name'] .= '.' . $ext;
91	}
92
93	// Import the image into the Media Library.
94	$image_id = media_handle_sideload( $file_array, $post_id, '' );
95	if ( is_wp_error( $image_id ) ) {
96	return $image_id;
97	}
98
99	// Store the Plugin Name against the Attachment's meta.
100	update_post_meta( $image_id, '_' . $this->base->plugin->filter_name, 1 );
101
102	// If a title or caption has been defined, set them now.
103	if ( ! empty( $title ) \|\| ! empty( $caption ) ) {
104	$attachment = get_post( $image_id );
105	wp_update_post(
106	array(
107	'ID' => $image_id,
108	'post_title' => sanitize_text_field( $title ),
109	'post_content' => sanitize_text_field( $description ),
110	'post_excerpt' => sanitize_text_field( $caption ),
111	)
112	);
113	}
114
115	// If an alt tag has been specified, set it now.
116	if ( ! empty( $alt_tag ) ) {
117	update_post_meta( $image_id, '_wp_attachment_image_alt', $alt_tag );
118	}
119
120	// Return the image ID.
121	return $image_id;
122
123	}
124
125	/**
126	* Deletes attachments that were added by an upload function in this class
127	* (i.e. that include the meta key flag)
128	*
129	* @since 4.2.0
130	*/
131	public function cleanup() {
132
133	// Build query to fetch images created by the plugin.
134	$args = array(
135	'post_type' => 'attachment',
136	'post_status' => 'any',
137	'posts_per_page' => -1,
138	'meta_query' => array(
139	array(
140	'key' => '_' . $this->base->plugin->filter_name,
141	'value' => 1,
142	),
143	),
144	'fields' => 'ids',
145	);
146
147	// Get all Attachments belonging to the given Post IDs.
148	$attachments = new \WP_Query( $args );
149
150	// If no Attachments found, return false, as there's nothing to delete.
151	if ( count( $attachments->posts ) === 0 ) {
152	return false;
153	}
154
155	// Delete attachments.
156	foreach ( $attachments->posts as $attachment_id ) {
157	wp_delete_attachment( $attachment_id );
158	}
159
160	return true;
161
162	}
163
164	/**
165	* Flag to denote if the GD image processing library is available
166	*
167	* @since 4.2.0
168	*
169	* @return bool GD Library Available in PHP
170	*/
171	private function is_gd_available() {
172
173	return extension_loaded( 'gd' ) && function_exists( 'gd_info' );
174
175	}
176
177	/**
178	* Force using the GD Image Library for processing WordPress Images.
179	*
180	* @since 4.2.0
181	*
182	* @param array $editors WordPress Image Editors.
183	* @return array WordPress Image Editors.
184	*/
185	public function enable_gd_image_support( $editors ) {
186
187	$gd_editor = 'WP_Image_Editor_GD';
188	$editors = array_diff( $editors, array( $gd_editor ) );
189	array_unshift( $editors, $gd_editor );
190	return $editors;
191
192	}
193
194	}
195