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| 1 | <?php |
| 2 | |
| 3 | namespace NewfoldLabs\WP\Module\Performance\Images; |
| 4 | |
| 5 | use WP_Forge\WP_Htaccess_Manager\htaccess; |
| 6 | use function WP_Forge\WP_Htaccess_Manager\removeMarkers; |
| 7 | |
| 8 | /** |
| 9 | * Handles the management of .htaccess rules for optimized image redirects. |
| 10 | */ |
| 11 | class ImageRewriteHandler { |
| 12 | |
| 13 | /** |
| 14 | * Marker for missing image redirect rules. |
| 15 | */ |
| 16 | const MISSING_IMAGE_MARKER = 'Newfold WebP Missing Image Redirect'; |
| 17 | |
| 18 | /** |
| 19 | * Marker for existing image redirect rules. |
| 20 | */ |
| 21 | const EXISTING_IMAGE_MARKER = 'Newfold WebP Existing Image Redirect'; |
| 22 | |
| 23 | /** |
| 24 | * Constructor to set up listeners. |
| 25 | */ |
| 26 | public function __construct() { |
| 27 | add_action( 'update_option_nfd_image_optimization', array( $this, 'on_image_setting_change' ), 10, 2 ); |
| 28 | } |
| 29 | |
| 30 | /** |
| 31 | * Add the missing image redirect rule to .htaccess. |
| 32 | */ |
| 33 | public function add_missing_image_rule() { |
| 34 | $rules = array( |
| 35 | '<IfModule mod_rewrite.c>', |
| 36 | "\tRewriteEngine On", |
| 37 | "\tRewriteCond %{REQUEST_FILENAME} !-f", |
| 38 | "\tRewriteCond %{REQUEST_FILENAME} !-d", |
| 39 | "\tRewriteCond %{REQUEST_URI} (.+)\\.(gif|bmp|jpg|jpeg|png|tiff|svg|webp)$ [NC]", |
| 40 | "\tRewriteCond %{DOCUMENT_ROOT}%1.webp -f", |
| 41 | "\tRewriteRule ^(.+)\\.(gif|bmp|jpg|jpeg|png|tiff|svg|webp)$ $1.webp [T=image/webp,E=WEBP_REDIRECT:1,L]", |
| 42 | '</IfModule>', |
| 43 | ); |
| 44 | |
| 45 | $htaccess = new htaccess( self::MISSING_IMAGE_MARKER ); |
| 46 | return $htaccess->addContent( $rules ); |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Add the existing image redirect rule to .htaccess. |
| 51 | */ |
| 52 | public function add_existing_image_rule() { |
| 53 | $rules = array( |
| 54 | '<IfModule mod_rewrite.c>', |
| 55 | "\tRewriteEngine On", |
| 56 | "\tRewriteCond %{REQUEST_FILENAME} -f", |
| 57 | "\tRewriteCond %{REQUEST_URI} (.+)\\.(gif|bmp|jpg|jpeg|png|tiff|svg|webp)$ [NC]", |
| 58 | "\tRewriteCond %{DOCUMENT_ROOT}%1.webp -f", |
| 59 | "\tRewriteRule ^(.+)\\.(gif|bmp|jpg|jpeg|png|tiff|svg|webp)$ $1.webp [T=image/webp,E=WEBP_REDIRECT:1,L]", |
| 60 | '</IfModule>', |
| 61 | ); |
| 62 | |
| 63 | $htaccess = new htaccess( self::EXISTING_IMAGE_MARKER ); |
| 64 | return $htaccess->addContent( $rules ); |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Remove both rules from the .htaccess file. |
| 69 | */ |
| 70 | public function remove_rules() { |
| 71 | removeMarkers( self::MISSING_IMAGE_MARKER ); |
| 72 | removeMarkers( self::EXISTING_IMAGE_MARKER ); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Activate the rules when needed. |
| 77 | */ |
| 78 | public function on_activation() { |
| 79 | $this->add_missing_image_rule(); |
| 80 | $this->add_existing_image_rule(); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Deactivate the rules when needed. |
| 85 | */ |
| 86 | public function on_deactivation() { |
| 87 | $this->remove_rules(); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Handle changes to image optimization settings. |
| 92 | * |
| 93 | * @param array $old_value The previous settings (not used). |
| 94 | * @param array $new_value The updated settings. |
| 95 | */ |
| 96 | public function on_image_setting_change( $old_value, $new_value ) { |
| 97 | // If the image optimization is disabled, remove all rules and return. |
| 98 | if ( empty( $new_value['enabled'] ) ) { |
| 99 | $this->remove_rules(); |
| 100 | return; |
| 101 | } |
| 102 | |
| 103 | // Handle 'auto_delete_original_image' setting. |
| 104 | if ( ! empty( $new_value['auto_optimized_uploaded_images']['auto_delete_original_image'] ) ) { |
| 105 | $this->add_missing_image_rule(); |
| 106 | } else { |
| 107 | removeMarkers( self::MISSING_IMAGE_MARKER ); |
| 108 | } |
| 109 | |
| 110 | // Handle 'prefer_optimized_image_when_exists' setting. |
| 111 | if ( ! empty( $new_value['prefer_optimized_image_when_exists'] ) ) { |
| 112 | $this->add_existing_image_rule(); |
| 113 | } else { |
| 114 | removeMarkers( self::EXISTING_IMAGE_MARKER ); |
| 115 | } |
| 116 | } |
| 117 | } |