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| 1 | <?php |
| 2 | /** |
| 3 | * WP Template file. |
| 4 | * |
| 5 | * @package A8C\FSE |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Jetpack_Mu_Wpcom\Wpcom_Legacy_FSE; |
| 9 | |
| 10 | /** |
| 11 | * Class WP_Template |
| 12 | */ |
| 13 | class WP_Template { |
| 14 | /** |
| 15 | * Header template type constant. |
| 16 | * |
| 17 | * @var string HEADER |
| 18 | */ |
| 19 | const HEADER = 'header'; |
| 20 | |
| 21 | /** |
| 22 | * Footer template type constant |
| 23 | * |
| 24 | * @var string FOOTER |
| 25 | */ |
| 26 | const FOOTER = 'footer'; |
| 27 | |
| 28 | /** |
| 29 | * Name of the currently active theme that is used to reference its template CPTs. |
| 30 | * |
| 31 | * @var string $current_theme_name Name of currently active theme on the site. |
| 32 | */ |
| 33 | private $current_theme_name; |
| 34 | |
| 35 | /** |
| 36 | * List of template types that FSE is currently supporting. |
| 37 | * |
| 38 | * @var array $supported_template_types Array of strings containing supported template types. |
| 39 | */ |
| 40 | public $supported_template_types = array( self::HEADER, self::FOOTER ); |
| 41 | |
| 42 | /** |
| 43 | * A8C_WP_Template constructor. |
| 44 | * |
| 45 | * @param string $theme Defaults to the current theme slug, but can be |
| 46 | * overriden to use this class with themes which are |
| 47 | * not currently active. |
| 48 | */ |
| 49 | public function __construct( $theme = null ) { |
| 50 | if ( ! isset( $theme ) ) { |
| 51 | $theme = get_stylesheet(); |
| 52 | } |
| 53 | $this->current_theme_name = normalize_theme_slug( $theme ); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Checks whether the provided template type is supported in FSE. |
| 58 | * |
| 59 | * @param string $template_type String representing the template type. |
| 60 | * |
| 61 | * @return bool True if provided template type is supported in FSE, false otherwise. |
| 62 | */ |
| 63 | public function is_supported_template_type( $template_type ) { |
| 64 | return in_array( $template_type, $this->supported_template_types, true ); |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Returns the post ID of the default template CPT for a given template type. |
| 69 | * |
| 70 | * @param string $template_type String representing the template type. |
| 71 | * |
| 72 | * @return null|int Template ID if it exists or null otherwise. |
| 73 | */ |
| 74 | public function get_template_id( $template_type ) { |
| 75 | if ( ! $this->is_supported_template_type( $template_type ) ) { |
| 76 | return null; |
| 77 | } |
| 78 | |
| 79 | $term = get_term_by( 'name', "$this->current_theme_name-$template_type", 'wp_template_part_type', ARRAY_A ); |
| 80 | |
| 81 | // Bail if current site doesn't have this term registered. |
| 82 | if ( ! isset( $term['term_id'] ) ) { |
| 83 | return null; |
| 84 | } |
| 85 | |
| 86 | $template_ids = get_objects_in_term( $term['term_id'], $term['taxonomy'], array( 'order' => 'DESC' ) ); |
| 87 | |
| 88 | // Bail if we haven't found any post instances for this template type. |
| 89 | if ( empty( $template_ids ) ) { |
| 90 | return null; |
| 91 | } |
| 92 | |
| 93 | /* |
| 94 | * Assuming that we'll have just one default template for now. |
| 95 | * We'll add support for multiple header and footer variations in future iterations. |
| 96 | */ |
| 97 | return (int) $template_ids[0]; |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | * Returns template content for given template type. |
| 102 | * |
| 103 | * @param string $template_type String representing the template type. |
| 104 | * |
| 105 | * @return null|string Template content if it exists or null otherwise. |
| 106 | */ |
| 107 | public function get_template_content( $template_type ) { |
| 108 | if ( ! $this->is_supported_template_type( $template_type ) ) { |
| 109 | return null; |
| 110 | } |
| 111 | |
| 112 | $template_id = $this->get_template_id( $template_type ); |
| 113 | |
| 114 | if ( null === $template_id ) { |
| 115 | return null; |
| 116 | } |
| 117 | |
| 118 | $template_post = get_post( $template_id ); |
| 119 | |
| 120 | if ( null === $template_post ) { |
| 121 | return; |
| 122 | } |
| 123 | |
| 124 | return $template_post->post_content; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * Returns full page template content. |
| 129 | * |
| 130 | * We only support one page template for now with header at the top and footer at the bottom. |
| 131 | * |
| 132 | * @return null|string |
| 133 | */ |
| 134 | public function get_page_template_content() { |
| 135 | $header_id = $this->get_template_id( self::HEADER ); |
| 136 | $footer_id = $this->get_template_id( self::FOOTER ); |
| 137 | |
| 138 | /* |
| 139 | * Bail if we are missing header or footer. Otherwise this would cause us to |
| 140 | * always return some page template content and show template parts (with empty IDs), |
| 141 | * even for themes that don't support FSE. |
| 142 | */ |
| 143 | if ( ! $header_id || ! $footer_id ) { |
| 144 | return null; |
| 145 | } |
| 146 | |
| 147 | return "<!-- wp:a8c/template {\"templateId\":$header_id,\"label\":\"" . __( 'Header', 'jetpack-mu-wpcom' ) . '","className":"fse-template-part fse-header"} /-->' . |
| 148 | '<!-- wp:a8c/post-content /-->' . |
| 149 | "<!-- wp:a8c/template {\"templateId\":$footer_id,\"label\":\"" . __( 'Footer', 'jetpack-mu-wpcom' ) . '","className":"fse-template-part fse-footer"} /-->'; |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Returns array of blocks that represent the template. |
| 154 | * |
| 155 | * @return array |
| 156 | */ |
| 157 | public function get_template_blocks() { |
| 158 | $template_content = $this->get_page_template_content(); |
| 159 | $template_blocks = parse_blocks( $template_content ); |
| 160 | return is_array( $template_blocks ) ? $template_blocks : array(); |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * Output FSE template markup. |
| 165 | * |
| 166 | * @param string $template_type String representing the template type. |
| 167 | * |
| 168 | * @return null|void Null if unsupported template type is passed, outputs content otherwise. |
| 169 | */ |
| 170 | public function output_template_content( $template_type ) { |
| 171 | if ( ! $this->is_supported_template_type( $template_type ) ) { |
| 172 | return null; |
| 173 | } |
| 174 | |
| 175 | // Things that follow are from wp-includes/default-filters.php |
| 176 | // not everything is appropriate for template content as opposed to post content. |
| 177 | global $wp_embed; |
| 178 | $content = $this->get_template_content( $template_type ); |
| 179 | |
| 180 | // 8 priority |
| 181 | $content = $wp_embed->run_shortcode( $content ); |
| 182 | $content = $wp_embed->autoembed( $content ); |
| 183 | |
| 184 | // 9 priority |
| 185 | $content = do_blocks( $content ); |
| 186 | |
| 187 | // 10 priority |
| 188 | $content = wptexturize( $content ); |
| 189 | |
| 190 | // 11 priority |
| 191 | $content = do_shortcode( $content ); |
| 192 | |
| 193 | $content = prepend_attachment( $content ); |
| 194 | |
| 195 | if ( has_filter( 'a8c_fse_make_content_images_responsive' ) ) { |
| 196 | $content = apply_filters( 'a8c_fse_make_content_images_responsive', $content ); |
| 197 | } else { |
| 198 | $content = wp_filter_content_tags( $content ); |
| 199 | } |
| 200 | |
| 201 | // phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped |
| 202 | echo $content; |
| 203 | } |
| 204 | } |