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| 1 | <?php |
| 2 | |
| 3 | namespace NewfoldLabs\WP\Module\Performance\Cloudflare; |
| 4 | |
| 5 | use NewfoldLabs\WP\Module\Performance\Fonts\FontSettings; |
| 6 | use NewfoldLabs\WP\Module\Performance\Images\ImageSettings; |
| 7 | use WP_Forge\WP_Htaccess_Manager\htaccess; |
| 8 | |
| 9 | /** |
| 10 | * Handles detection and tracking of Cloudflare Polish, Mirage, and Font Optimization. |
| 11 | */ |
| 12 | class CloudflareFeaturesManager { |
| 13 | |
| 14 | private const MARKER = 'Newfold CF Optimization Header'; |
| 15 | |
| 16 | /** |
| 17 | * Constructor to register hooks for settings changes. |
| 18 | */ |
| 19 | public function __construct() { |
| 20 | add_action( 'update_option_nfd_image_optimization', array( $this, 'on_image_optimization_change' ), 10, 2 ); |
| 21 | add_action( 'add_option_nfd_image_optimization', array( $this, 'on_image_optimization_change' ), 10, 2 ); |
| 22 | add_action( 'update_option_nfd_fonts_optimization', array( $this, 'on_fonts_optimization_change' ), 10, 2 ); |
| 23 | add_action( 'add_option_nfd_fonts_optimization', array( $this, 'on_fonts_optimization_change' ), 10, 2 ); |
| 24 | add_action( 'set_transient_nfd_site_capabilities', array( $this, 'on_site_capabilities_change' ), 10, 2 ); |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * Handles image optimization setting changes. |
| 29 | * |
| 30 | * @param array $old_value Previous value. |
| 31 | * @param array $new_value New value. |
| 32 | */ |
| 33 | public function on_image_optimization_change( $old_value, $new_value ) { |
| 34 | $this->update_htaccess_header( $new_value, get_option( 'nfd_fonts_optimization', false ) ); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Handles font optimization setting changes. |
| 39 | * |
| 40 | * @param mixed $old_value Previous value. |
| 41 | * @param mixed $new_value New value. |
| 42 | */ |
| 43 | public function on_fonts_optimization_change( $old_value, $new_value ) { |
| 44 | $this->update_htaccess_header( get_option( 'nfd_image_optimization', array() ), $new_value ); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Callback for when the `nfd_site_capabilities` transient is set. |
| 49 | * |
| 50 | * Triggers a refresh of image and font optimization settings based on updated site capabilities. |
| 51 | * |
| 52 | * @param mixed $value The value being set in the transient. |
| 53 | * @param int $expiration The expiration time in seconds. |
| 54 | */ |
| 55 | public function on_site_capabilities_change( $value, $expiration ) { |
| 56 | if ( is_array( $value ) ) { |
| 57 | ImageSettings::maybe_refresh_with_capabilities( $value ); |
| 58 | FontSettings::maybe_refresh_with_capabilities( $value ); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Updates the .htaccess header based on current optimization settings. |
| 64 | * |
| 65 | * @param array $image_settings Array of image optimization settings. |
| 66 | * @param mixed $fonts_enabled Whether font optimization is enabled. |
| 67 | */ |
| 68 | private function update_htaccess_header( $image_settings, $fonts_enabled ) { |
| 69 | $images_cloudflare = isset( $image_settings['cloudflare'] ) ? $image_settings['cloudflare'] : array(); |
| 70 | $fonts_cloudflare = isset( $fonts_enabled['cloudflare'] ) ? $fonts_enabled['cloudflare'] : array(); |
| 71 | |
| 72 | $mirage_enabled = ! empty( $images_cloudflare['mirage']['value'] ); |
| 73 | $polish_enabled = ! empty( $images_cloudflare['polish']['value'] ); |
| 74 | $fonts_enabled_flag = ! empty( $fonts_cloudflare['fonts']['value'] ); |
| 75 | |
| 76 | $mirage_hash = $mirage_enabled ? substr( sha1( 'mirage' ), 0, 8 ) : ''; |
| 77 | $polish_hash = $polish_enabled ? substr( sha1( 'polish' ), 0, 8 ) : ''; |
| 78 | $fonts_hash = $fonts_enabled_flag ? substr( sha1( 'fonts' ), 0, 8 ) : ''; |
| 79 | |
| 80 | $header_value = "{$mirage_hash}{$polish_hash}{$fonts_hash}"; |
| 81 | $rules = array(); |
| 82 | |
| 83 | if ( $mirage_enabled || $polish_enabled || $fonts_enabled_flag ) { |
| 84 | $rules = array( |
| 85 | '<IfModule mod_rewrite.c>', |
| 86 | "\tRewriteEngine On", |
| 87 | "\t# Skip setting for admin/API routes", |
| 88 | "\tRewriteCond %{REQUEST_URI} !/wp-admin/ [NC]", |
| 89 | "\tRewriteCond %{REQUEST_URI} !/wp-login\\.php [NC]", |
| 90 | "\tRewriteCond %{REQUEST_URI} !/wp-json/ [NC]", |
| 91 | "\tRewriteCond %{REQUEST_URI} !/xmlrpc\\.php [NC]", |
| 92 | "\tRewriteCond %{REQUEST_URI} !/admin-ajax\\.php [NC]", |
| 93 | "\t# Skip if the exact cookie and value are already present", |
| 94 | "\tRewriteCond %{HTTP_COOKIE} !(^|;\\s*)nfd-enable-cf-opt={$header_value} [NC]", |
| 95 | "\t# Set env var if we passed all conditions", |
| 96 | "\tRewriteRule .* - [E=CF_OPT:1]", |
| 97 | '</IfModule>', |
| 98 | '<IfModule mod_headers.c>', |
| 99 | "\t# Set cookie only if env var is present (i.e., exact cookie not found)", |
| 100 | "\tHeader set Set-Cookie \"nfd-enable-cf-opt={$header_value}; path=/; Max-Age=86400; HttpOnly\" env=CF_OPT", |
| 101 | '</IfModule>', |
| 102 | ); |
| 103 | } |
| 104 | |
| 105 | $htaccess = new htaccess( self::MARKER ); |
| 106 | if ( empty( $rules ) ) { |
| 107 | $htaccess->removeContent(); |
| 108 | } else { |
| 109 | $htaccess->addContent( $rules ); |
| 110 | } |
| 111 | } |
| 112 | } |