auto-alt-text / src / App / Admin / MediaLibrary.php

MediaLibrary.php in Auto Alt Text 2.5.0, at src/App/Admin/MediaLibrary.php

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1	<?php
2
3	namespace AATXT\App\Admin;
4
5	use AATXT\App\Setup;
6	use AATXT\App\Utilities\AssetsManager;
7	use AATXT\Config\Constants;
8
9	class MediaLibrary
10	{
11	private static ?self $instance = null;
12	private static AssetsManager $assetsManager;
13
14	private function __construct()
15	{
16	//
17	}
18
19	public static function register(): void
20	{
21	if (is_null(self::$instance)) {
22	self::$instance = new self();
23	}
24	self::$assetsManager = AssetsManager::make();
25
26	add_action('admin_enqueue_scripts', [self::$instance, 'enqueue'], 1);
27
28	// Render custom template in media modal
29	add_action('print_media_templates', [self::$instance, 'renderGenerateButtonTemplate']);
30
31	// Add button to generate alt text in media library
32	add_filter('attachment_fields_to_edit', [self::$instance, 'addGenerateAltTextButton'], 10, 2);
33
34	// Handle AJAX request to generate alt text
35	add_action('wp_ajax_generate_alt_text', [self::$instance, 'generateAltText']);
36	}
37
38	public function enqueue(): void
39	{
40	$screen = get_current_screen();
41
42	// Load script in Media Library and in any post editing/modal (all CPTs)
43	if (! $screen \|\| in_array($screen->base, ['upload', 'post'], true)) {
44	$mediaLibraryJs = self::$assetsManager->getAssetUrl('resources/js/media-library.js', false);
45	wp_enqueue_script(
46	Constants::AATXT_PLUGIN_MEDIA_LIBRARY_HANDLE,
47	$mediaLibraryJs,
48	['jquery'],
49	false,
50	true
51	);
52
53	wp_localize_script(
54	Constants::AATXT_PLUGIN_MEDIA_LIBRARY_HANDLE,
55	'AATXT',
56	[
57	'altTextNonce' => wp_create_nonce(Constants::AATXT_AJAX_GENERATE_ALT_TEXT_NONCE),
58	'ajaxUrl' => admin_url('admin-ajax.php'),
59	]
60	);
61	}
62	}
63
64	public function renderGenerateButtonTemplate(): void
65	{
66	?>
67	<script type="text/html" id="tmpl-aatxt-generate-alt-text">
68	<# if ( data.type === 'image' ) { #>
69	<button class="button aatxt-generate-alt-text" data-post-id="{{ data.id }}">
70	<?php esc_html_e('Generate Alt Text', 'auto-alt-text'); ?>
71	</button>
72	<span class="spinner"></span>
73	<# } #>
74	</script>
75
76	<?php
77	}
78
79	public function addGenerateAltTextButton(array $form_fields, \WP_Post $post): array
80	{
81	if (! wp_attachment_is_image($post->ID)) {
82	return $form_fields;
83	}
84
85	$mimeType = get_post_mime_type($post->ID);
86	$altTextGenerationTypology = PluginOptions::typology();
87
88	if ($altTextGenerationTypology === Constants::AATXT_OPTION_TYPOLOGY_CHOICE_OPENAI
89	&& ! in_array($mimeType, Constants::AATXT_OPENAI_ALLOWED_MIME_TYPES, true)
90	) {
91	return $form_fields;
92	}
93
94	if ($altTextGenerationTypology === Constants::AATXT_OPTION_TYPOLOGY_CHOICE_AZURE
95	&& ! in_array($mimeType, Constants::AATXT_AZURE_ALLOWED_MIME_TYPES, true)
96	) {
97	return $form_fields;
98	}
99
100	$form_fields['generate_alt_text'] = [
101	'label' => get_post_mime_type($post->ID),
102	'input' => 'html',
103	'html' => '<button type="button" class="button" id="generate-alt-text-button" data-post-id="' . $post->ID . '">'
104	. esc_html__('Generate Alt Text', 'auto-alt-text') .
105	'</button><span id="loading-spinner" class="spinner" style="float:none; margin-left:5px; display:none;"></span>',
106	'helps' => '',
107	];
108
109	return $form_fields;
110	}
111
112	public function generateAltText(): void
113	{
114	check_ajax_referer(Constants::AATXT_AJAX_GENERATE_ALT_TEXT_NONCE, 'nonce');
115
116	$postId = isset($_POST['post_id']) ? intval($_POST['post_id']) : 0;
117	if (! $postId) {
118	wp_send_json_error('Invalid Post ID');
119	return;
120	}
121
122	$mediaUrl = wp_get_attachment_url($postId);
123	if (! $mediaUrl) {
124	wp_send_json_error('Media not found');
125	return;
126	}
127
128	$generatedAltText = Setup::altText($postId);
129	wp_send_json_success(['alt_text' => $generatedAltText]);
130	}
131	}
132