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| 1 | <?php |
| 2 | /** |
| 3 | * Utilities. |
| 4 | * |
| 5 | * @package automattic/jetpack-publicize |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Publicize\Social_Image_Generator; |
| 9 | |
| 10 | use Automattic\Jetpack\Publicize\Publicize_Utils as Utils; |
| 11 | use Automattic\Jetpack\Publicize\REST_API\Proxy_Requests; |
| 12 | use Automattic\Jetpack\Redirect; |
| 13 | use WP_Error; |
| 14 | use WP_REST_Request; |
| 15 | |
| 16 | /** |
| 17 | * Given a post ID, returns the image URL for the generated image. |
| 18 | * |
| 19 | * @param int $post_id Post ID to get the URL for. |
| 20 | * @return string |
| 21 | */ |
| 22 | function get_image_url( $post_id ) { |
| 23 | $post_settings = new Post_Settings( $post_id ); |
| 24 | $token = $post_settings->get_token(); |
| 25 | |
| 26 | if ( ! $post_settings->is_enabled() || empty( $token ) ) { |
| 27 | return ''; |
| 28 | } |
| 29 | |
| 30 | return add_query_arg( |
| 31 | array( 'query' => rawurlencode( 't=' . $token ) ), |
| 32 | Redirect::get_url( 'sigenerate', array( 'site' => null ) ) |
| 33 | ); |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Get the parameters for the token body. |
| 38 | * |
| 39 | * @param string $text Text to use in the generated image. |
| 40 | * @param string $image_url Image to use in the generated image. |
| 41 | * @param string $template Template to use in the generated image. |
| 42 | * @param string $font Font to use in the generated image. |
| 43 | * @return array |
| 44 | */ |
| 45 | function get_token_body( $text, $image_url, $template, $font = '' ) { |
| 46 | return array( |
| 47 | 'text' => $text, |
| 48 | 'image_url' => $image_url, |
| 49 | 'template' => $template, |
| 50 | 'font' => $font, |
| 51 | ); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Fetch a token from the WPCOM endpoint. |
| 56 | * |
| 57 | * @param string $text The text that will be displayed on the generated image. |
| 58 | * @param string $image_url The background image URL to be used in the generated image. |
| 59 | * @param string $template The template slug to use for generating the image. |
| 60 | * @param string $font The font slug to use for the text in the image. |
| 61 | * @return string|WP_Error The generated token or a WP_Error object if there's been a problem. |
| 62 | */ |
| 63 | function fetch_token( $text, $image_url, $template, $font = '' ) { |
| 64 | |
| 65 | $args = get_token_body( $text, $image_url, $template, $font ); |
| 66 | |
| 67 | if ( Utils::is_wpcom() ) { |
| 68 | require_lib( 'social-image-generator-token' ); |
| 69 | require_lib( 'publicize/util/social-image-generator' ); |
| 70 | |
| 71 | if ( ! \Publicize\Social_Image_Generator\is_enabled() ) { |
| 72 | return new WP_Error( 'social_image_generator_not_enabled', __( 'Social Image Generator is not enabled.', 'jetpack-publicize-pkg' ) ); |
| 73 | } |
| 74 | |
| 75 | return \Social_Image_Generator\generate_token( $args ); |
| 76 | } |
| 77 | |
| 78 | $proxy = new Proxy_Requests( 'publicize/social-image-generator' ); |
| 79 | |
| 80 | $request = new WP_REST_Request( 'POST' ); |
| 81 | |
| 82 | $request->set_body( wp_json_encode( $args, JSON_UNESCAPED_SLASHES ) ); |
| 83 | |
| 84 | return $proxy->proxy_request_to_wpcom_as_blog( $request, 'generate-token' ); |
| 85 | } |