<?php
/**
 * Frontend: Shortcodes, Block, Platzierung im Inhalt, Schema im Kopf, Assets.
 *
 * @package ThreeRB
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Öffentliche Ausgabe der Review Box.
 */
final class ThreeRB_Front {

	/**
	 * Haken setzen.
	 */
	public static function init() {
		add_action( 'init', array( __CLASS__, 'register' ) );
		add_filter( 'the_content', array( __CLASS__, 'place' ), 20 );
		add_action( 'wp_head', array( __CLASS__, 'head' ), 30 );
		add_filter( 'rank_math/json_ld', array( __CLASS__, 'rank_math' ), 99, 2 );
		add_filter( 'wpseo_schema_graph', array( __CLASS__, 'yoast' ), 99, 2 );
		add_action( 'wp_enqueue_scripts', array( __CLASS__, 'early_assets' ) );
	}

	/**
	 * Assets, Shortcodes und Block registrieren.
	 */
	public static function register() {
		$v = THREERB_VERSION . '.' . (int) filemtime( THREERB_DIR . 'assets/css/box.css' );
		wp_register_style( 'threerb-box', THREERB_URL . 'assets/css/box.css', array(), $v );
		wp_register_script(
			'threerb-weigh',
			THREERB_URL . 'assets/js/weigh.js',
			array(),
			THREERB_VERSION . '.' . (int) filemtime( THREERB_DIR . 'assets/js/weigh.js' ),
			array(
				'strategy'  => 'defer',
				'in_footer' => true,
			)
		);

		add_shortcode( '3task_review_box', array( __CLASS__, 'shortcode_box' ) );
		add_shortcode( '3task_review_score', array( __CLASS__, 'shortcode_score' ) );
		add_shortcode( '3task_review_summary', array( __CLASS__, 'shortcode_summary' ) );
		self::bridge();

		add_shortcode( '3task_review_toplist', array( __CLASS__, 'shortcode_toplist' ) );
		add_shortcode( '3task_review_reviewers', array( __CLASS__, 'shortcode_reviewers' ) );

		if ( function_exists( 'register_block_type' ) ) {
			register_block_type( THREERB_DIR . 'blocks/box', array( 'render_callback' => array( __CLASS__, 'render_block' ) ) );
			register_block_type( THREERB_DIR . 'blocks/summary', array( 'render_callback' => array( __CLASS__, 'render_summary' ) ) );
			register_block_type( THREERB_DIR . 'blocks/score', array( 'render_callback' => array( __CLASS__, 'render_score' ) ) );
			register_block_type( THREERB_DIR . 'blocks/toplist', array( 'render_callback' => array( __CLASS__, 'render_toplist' ) ) );
			register_block_type( THREERB_DIR . 'blocks/reviewers', array( 'render_callback' => array( __CLASS__, 'render_reviewers' ) ) );
		}
	}

	/**
	 * Shortcode [3task_review_box id="" kompakt display="" style=""].
	 *
	 * @param array|string $atts Attribute.
	 * @return string
	 */
	public static function shortcode_box( $atts ) {
		$atts    = is_array( $atts ) ? $atts : array();
		$kompakt = in_array( 'kompakt', $atts, true ) || in_array( 'compact', $atts, true );
		$a       = shortcode_atts(
			array(
				'id'      => '',
				'display' => '',
				'style'   => '',
			),
			$atts,
			'3task_review_box'
		);
		$id      = self::post_id( $a['id'] );
		if ( ! $id ) {
			return '';
		}
		return ThreeRB_Render::box(
			$id,
			array(
				'variant' => $kompakt ? 'compact' : 'full',
				'display' => sanitize_key( $a['display'] ),
				'style'   => sanitize_key( $a['style'] ),
			)
		);
	}

	/**
	 * Shortcode [3task_review_score id=""].
	 *
	 * @param array|string $atts Attribute.
	 * @return string
	 */
	public static function shortcode_score( $atts ) {
		$a  = shortcode_atts( array( 'id' => '' ), is_array( $atts ) ? $atts : array(), '3task_review_score' );
		$id = self::post_id( $a['id'] );
		return $id ? ThreeRB_Render::score( $id ) : '';
	}

	/**
	 * Shortcode [3task_review_summary id=""].
	 *
	 * @param array|string $atts Attribute.
	 * @return string
	 */
	public static function shortcode_summary( $atts ) {
		$a  = shortcode_atts( array( 'id' => '' ), is_array( $atts ) ? $atts : array(), '3task_review_summary' );
		$id = self::post_id( $a['id'] );
		return $id ? ThreeRB_Render::summary( $id ) : '';
	}

	/**
	 * Brücke nach dem Umzug: alte WP-Review-Shortcodes zeigen unsere Box. Nur, solange WP Review aus ist.
	 */
	public static function bridge() {
		if ( ThreeRB_Migrate::wp_review_active() ) {
			return;
		}
		foreach ( array( 'wp-review', 'wp_review' ) as $name ) {
			if ( ! shortcode_exists( $name ) ) {
				add_shortcode( $name, array( __CLASS__, 'bridge_box' ) );
			}
		}
		foreach ( array( 'wp-review-total', 'wp_review_total' ) as $name ) {
			if ( ! shortcode_exists( $name ) ) {
				add_shortcode( $name, array( __CLASS__, 'shortcode_score' ) );
			}
		}
		foreach ( array( 'wp-review-visitor-rating', 'wp_review_visitor_rating' ) as $name ) {
			if ( ! shortcode_exists( $name ) ) {
				add_shortcode( $name, '__return_empty_string' );
			}
		}
	}

	/**
	 * [wp-review id=""] zeigt die volle Box.
	 *
	 * @param array|string $atts Attribute.
	 * @return string
	 */
	public static function bridge_box( $atts ) {
		$a  = shortcode_atts( array( 'id' => '' ), is_array( $atts ) ? $atts : array(), 'wp-review' );
		$id = self::post_id( $a['id'] );
		return $id ? ThreeRB_Render::box( $id ) : '';
	}

	/**
	 * Shortcode [3task_review_toplist count="5" type="post" category=""].
	 *
	 * @param array|string $atts Attribute.
	 * @return string
	 */
	public static function shortcode_toplist( $atts ) {
		$a = shortcode_atts(
			array(
				'count'     => '5',
				'type'      => 'post',
				'category'  => '',
				'tag'       => '',
				'order'     => 'desc',
				'criterion' => '',
				'display'   => 'list',
				'stars'     => '',
				'paged'     => '',
			),
			is_array( $atts ) ? $atts : array(),
			'3task_review_toplist'
		);
		return ThreeRB_Render::toplist(
			array(
				'count'     => ctype_digit( (string) $a['count'] ) ? (int) $a['count'] : 5,
				'postType'  => sanitize_key( $a['type'] ),
				'term'      => ctype_digit( (string) $a['category'] ) ? (int) $a['category'] : 0,
				'tag'       => ctype_digit( (string) $a['tag'] ) ? (int) $a['tag'] : 0,
				'order'     => sanitize_key( $a['order'] ),
				'criterion' => $a['criterion'],
				'display'   => sanitize_key( $a['display'] ),
				'stars'     => $a['stars'],
				'paged'     => $a['paged'],
			)
		);
	}

	/**
	 * Shortcode [3task_review_reviewers count="5"].
	 *
	 * @param array|string $atts Attribute.
	 * @return string
	 */
	public static function shortcode_reviewers( $atts ) {
		$a = shortcode_atts( array( 'count' => '5' ), is_array( $atts ) ? $atts : array(), '3task_review_reviewers' );
		return ThreeRB_Render::reviewers( array( 'count' => ctype_digit( (string) $a['count'] ) ? (int) $a['count'] : 5 ) );
	}

	/**
	 * Block threerb/summary.
	 *
	 * @param array    $attrs   Attribute.
	 * @param string   $content Inhalt.
	 * @param WP_Block $block   Block mit Kontext.
	 * @return string
	 */
	public static function render_summary( $attrs, $content = '', $block = null ) {
		$id = self::block_post( $attrs, $block );
		return $id ? ThreeRB_Render::summary( $id ) : '';
	}

	/**
	 * Block threerb/score (Query-Loop).
	 *
	 * @param array    $attrs   Attribute.
	 * @param string   $content Inhalt.
	 * @param WP_Block $block   Block mit Kontext.
	 * @return string
	 */
	public static function render_score( $attrs, $content = '', $block = null ) {
		$id = self::block_post( $attrs, $block );
		return $id ? ThreeRB_Render::score( $id ) : '';
	}

	/**
	 * Block threerb/toplist.
	 *
	 * @param array $attrs Attribute.
	 * @return string
	 */
	public static function render_toplist( $attrs ) {
		return ThreeRB_Render::toplist(
			array(
				'count'     => isset( $attrs['count'] ) ? (int) $attrs['count'] : 5,
				'postType'  => isset( $attrs['postType'] ) ? sanitize_key( (string) $attrs['postType'] ) : 'post',
				'term'      => isset( $attrs['term'] ) ? absint( $attrs['term'] ) : 0,
				'tag'       => isset( $attrs['tag'] ) ? absint( $attrs['tag'] ) : 0,
				'order'     => isset( $attrs['order'] ) ? (string) $attrs['order'] : 'desc',
				'criterion' => isset( $attrs['criterion'] ) ? (string) $attrs['criterion'] : '',
				'display'   => isset( $attrs['display'] ) ? (string) $attrs['display'] : 'list',
				'stars'     => ! empty( $attrs['stars'] ),
				'paged'     => ! empty( $attrs['paged'] ),
			)
		);
	}

	/**
	 * Block threerb/reviewers.
	 *
	 * @param array $attrs Attribute.
	 * @return string
	 */
	public static function render_reviewers( $attrs ) {
		return ThreeRB_Render::reviewers( array( 'count' => isset( $attrs['count'] ) ? (int) $attrs['count'] : 5 ) );
	}

	/**
	 * Beitrag eines Blocks: Attribut, dann Block-Kontext, dann aktueller Beitrag.
	 *
	 * @param array    $attrs Attribute.
	 * @param WP_Block $block Block.
	 * @return int
	 */
	private static function block_post( $attrs, $block ) {
		$id = isset( $attrs['postId'] ) ? absint( $attrs['postId'] ) : 0;
		if ( ! $id && $block instanceof WP_Block && isset( $block->context['postId'] ) ) {
			$id = absint( $block->context['postId'] );
		}
		return $id ? $id : (int) get_the_ID();
	}

	/**
	 * Block threerb/box.
	 *
	 * @param array    $attrs   Attribute laut block.json.
	 * @param string   $content Inhalt.
	 * @param WP_Block $block   Block mit Kontext.
	 * @return string
	 */
	public static function render_block( $attrs, $content = '', $block = null ) {
		$id = isset( $attrs['postId'] ) ? absint( $attrs['postId'] ) : 0;
		if ( ! $id && $block instanceof WP_Block && isset( $block->context['postId'] ) ) {
			$id = absint( $block->context['postId'] );
		}
		if ( ! $id ) {
			$id = (int) get_the_ID();
		}
		if ( ! $id ) {
			return '';
		}
		$variante = isset( $attrs['variant'] ) && in_array( $attrs['variant'], array( 'full', 'compact', 'summary', 'score' ), true ) ? $attrs['variant'] : 'compact';
		if ( 'summary' === $variante ) {
			return ThreeRB_Render::summary( $id );
		}
		if ( 'score' === $variante ) {
			return ThreeRB_Render::score( $id );
		}
		return ThreeRB_Render::box(
			$id,
			array(
				'variant' => $variante,
				'display' => isset( $attrs['display'] ) ? sanitize_key( $attrs['display'] ) : '',
				'style'   => isset( $attrs['style'] ) ? sanitize_key( $attrs['style'] ) : '',
			)
		);
	}

	/**
	 * Platzierung im Beitrag: oben Kurzurteil, unten volle Box (nicht doppelt).
	 *
	 * @param string $content Inhalt.
	 * @return string
	 */
	public static function place( $content ) {
		if ( ! is_singular() || ! in_the_loop() || ! is_main_query() ) {
			return $content;
		}
		$id = (int) get_the_ID();
		if ( (int) get_queried_object_id() !== $id ) {
			return $content;
		}
		$box = ThreeRB_Box::get( $id );
		if ( ! ThreeRB_Box::has_rating( $box ) || ! ThreeRB_Render::visible( $id ) ) {
			return $content;
		}
		$oben  = $box['place']['top'] ? ThreeRB_Render::summary( $id ) : '';
		$unten = ( $box['place']['bottom'] && false === strpos( $content, 'data-trb-full' ) ) ? ThreeRB_Render::box( $id ) : '';
		return $oben . $content . $unten;
	}

	/**
	 * Beiträge, deren Review schon im Graph eines SEO-Plugins steht.
	 *
	 * @var array<int, bool>
	 */
	private static $graph = array();

	/**
	 * Merker für den Graph zurücksetzen (neue Seite, Prüfläufe).
	 */
	public static function reset_graph() {
		self::$graph = array();
	}

	/**
	 * JSON-LD im Kopf auf Einzelseiten, außer Rank Math oder Yoast haben den Knoten schon übernommen.
	 * Beide schreiben ihr Schema an wp_head mit Priorität 1, wir kommen mit 30 danach.
	 */
	public static function head() {
		if ( ! is_singular() ) {
			return;
		}
		$id = (int) get_queried_object_id();
		if ( ! empty( self::$graph[ $id ] ) ) {
			return;
		}
		$json = self::jsonld( $id );
		if ( '' !== $json ) {
			echo $json . "\n"; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- JSON mit JSON_HEX_TAG, siehe ThreeRB_Schema::encode().
		}
	}

	/**
	 * Rank Math: Review in dessen Graph einhängen.
	 *
	 * @param array $data   Entitäten von Rank Math.
	 * @param mixed $jsonld Rank-Math-Objekt.
	 * @return array
	 */
	public static function rank_math( $data, $jsonld = null ) {
		$knoten = self::graph_node();
		if ( null === $knoten || ! is_array( $data ) ) {
			return $data;
		}
		$data['threerbReview'] = $knoten;
		return $data;
	}

	/**
	 * Yoast SEO: Review als Baustein an den Graph anhängen.
	 *
	 * @param array $graph   Graph-Bausteine.
	 * @param mixed $context Yoast-Kontext.
	 * @return array
	 */
	public static function yoast( $graph, $context = null ) {
		$knoten = self::graph_node();
		if ( null === $knoten || ! is_array( $graph ) ) {
			return $graph;
		}
		$graph[] = $knoten;
		return $graph;
	}

	/**
	 * Knoten der aktuellen Einzelseite für einen fremden Graph, oder null.
	 *
	 * @return array|null
	 */
	private static function graph_node() {
		if ( ! is_singular() ) {
			return null;
		}
		$id     = (int) get_queried_object_id();
		$knoten = self::node( $id );
		if ( null === $knoten ) {
			return null;
		}
		unset( $knoten['@context'] );
		$url                        = get_permalink( $id );
		$knoten['@id']              = $url . '#threerb-item';
		$knoten['mainEntityOfPage'] = array( '@id' => $url . '#webpage' );
		self::$graph[ $id ]         = true;
		return $knoten;
	}

	/**
	 * Script-Element mit dem Schema eines Beitrags, oder leer.
	 *
	 * @param int $post_id Beitrag.
	 * @return string
	 */
	public static function jsonld( $post_id ) {
		$knoten = self::node( $post_id );
		if ( null === $knoten ) {
			return '';
		}
		return '<script type="application/ld+json">' . ThreeRB_Schema::encode( $knoten ) . '</script>';
	}

	/**
	 * Schema-Knoten eines Beitrags nach dem Filter threerb_schema, oder null.
	 *
	 * @param int $post_id Beitrag.
	 * @return array|null
	 */
	public static function node( $post_id ) {
		if ( ! ThreeRB_Render::is_public( $post_id ) ) {
			return null;
		}
		$box = ThreeRB_Box::get( $post_id );
		if ( ! $box ) {
			return null;
		}
		$post = get_post( $post_id );
		if ( 'organization' === ThreeRB_Settings::value( 'author' ) ) {
			$autor = array(
				'type' => 'Organization',
				'name' => get_bloginfo( 'name' ),
				'url'  => home_url( '/' ),
			);
		} else {
			$nutzer = get_userdata( (int) $post->post_author );
			$autor  = $nutzer ? array(
				'type' => 'Person',
				'name' => $nutzer->display_name,
				'url'  => get_author_posts_url( $nutzer->ID ),
			) : array(
				'type' => 'Organization',
				'name' => get_bloginfo( 'name' ),
				'url'  => home_url( '/' ),
			);
		}
		$knoten = ThreeRB_Schema::build(
			$box,
			array(
				'date'      => get_the_date( 'Y-m-d', $post ),
				'site_name' => get_bloginfo( 'name' ),
				'author'    => $autor,
			)
		);
		/**
		 * Schema-Knoten vor der Ausgabe ändern oder mit null abschalten.
		 *
		 * @param array|null $knoten  Knoten.
		 * @param int        $post_id Beitrag.
		 */
		$knoten = apply_filters( 'threerb_schema', $knoten, $post_id );
		return is_array( $knoten ) ? $knoten : null;
	}

	/**
	 * CSS früh laden, wenn der Beitrag eine Box hat (vermeidet Springen beim Laden).
	 */
	public static function early_assets() {
		if ( is_singular() && ThreeRB_Box::has_rating( ThreeRB_Box::get( (int) get_queried_object_id() ) ) ) {
			wp_enqueue_style( 'threerb-box' );
		}
	}

	/**
	 * Beitrags-ID aus Attribut oder aktueller Beitrag.
	 *
	 * @param mixed $wert Attribut.
	 * @return int
	 */
	private static function post_id( $wert ) {
		$wert = trim( (string) $wert );
		if ( '' === $wert ) {
			return (int) get_the_ID();
		}
		return ctype_digit( $wert ) ? (int) $wert : 0;
	}
}