<?php
/**
 * Product-specific buying information and editorial sections.
 *
 * @package Objeka_Toolkit
 */

defined( 'ABSPATH' ) || exit;

/** Supplies structured, contextual product content to native block templates. */
final class Objeka_Toolkit_Product_Content {
	/** Register the contextual product blocks. */
	public static function init() {
		add_action( 'init', array( __CLASS__, 'register' ) );
		add_filter( 'query_loop_block_query_vars', array( __CLASS__, 'recommendations' ), 10, 2 );
	}

	/**
	 * Prefer compatible companions and avoid recommending the current product.
	 *
	 * @param array    $query Native Query block arguments.
	 * @param WP_Block $block Query block instance.
	 * @return array Updated read-only query arguments.
	 */
	public static function recommendations( $query, $block ) {
		$is_related = ! empty( $block->context['query']['objekaRelated'] ) || str_contains( $block->parsed_block['attrs']['className'] ?? '', 'objeka-related-products' );
		if ( ! is_singular( 'product' ) || ! $is_related ) {
			return $query;
		}
		$product = wc_get_product( get_queried_object_id() );
		if ( ! $product ) {
			return $query;
		}
		$bump              = absint( $product->get_meta( '_objeka_bump_id' ) );
		$related           = wc_get_related_products( $product->get_id(), 4 );
		$other             = wc_get_products(
			array(
				'status' => 'publish',
				'limit'  => 5,
				'return' => 'ids',
			)
		);
		$ids               = array_filter( array_unique( array_merge( array( $bump ), $related, $other ) ) );
		$query['post__in'] = array_slice( array_diff( $ids, array( $product->get_id() ) ), 0, 4 );
		$query['post__in'] = $query['post__in'] ? $query['post__in'] : array( 0 );
		$query['orderby']  = 'post__in';
		return $query;
	}

	/** Register metadata; templates can be rearranged in the Site Editor. */
	public static function register() {
		foreach ( array( 'product-brief', 'product-story', 'product-policies', 'product-offer' ) as $name ) {
			register_block_type( OBJEKA_TOOLKIT_DIR . 'blocks/' . $name, array( 'render_callback' => array( __CLASS__, 'render' ) ) );
		}
	}

	/**
	 * Read an original demo profile without affecting unrelated products.
	 *
	 * @param WC_Product $product Product being displayed.
	 * @return array Structured editorial profile or an empty array.
	 */
	public static function profile( $product ) {
		static $profiles = null;
		if ( null === $profiles ) {
			$file     = OBJEKA_TOOLKIT_DIR . 'data/editorial.json';
			$profiles = file_exists( $file ) ? json_decode( file_get_contents( $file ), true ) : array(); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- Bundled local manifest.
		}
		$key     = $product->get_meta( '_objeka_demo_key' );
		$profile = $profiles[ $key ] ?? array();
		$custom  = $product->get_meta( '_objeka_editorial' );
		if ( ! $profile && ! $custom ) {
			return array();
		}
		$profile = array_replace(
			array(
				'name'     => $product->get_name(),
				'kind'     => __( 'Product details', 'objeka-toolkit' ),
				'category' => __( 'The collection', 'objeka-toolkit' ),
				'tone'     => 'neutral',
				'accent'   => '#2448ef',
				'intro'    => '',
				'promise'  => $product->get_name(),
				'lead'     => wp_strip_all_tags( $product->get_description() ),
				'caption'  => __( 'A closer look.', 'objeka-toolkit' ),
				'scene'    => $product->get_name(),
				'benefits' => array(),
				'steps'    => array(),
				'specs'    => array(),
				'box'      => array(),
				'compare'  => array(),
				'faq'      => array(),
			),
			$profile
		);
		if ( is_array( $custom ) ) {
			$profile = array_replace( $profile, $custom );
		}
		if ( ! $profile ) {
			return array();
		}
		if ( $product->get_short_description() ) {
			$profile['intro'] = wp_strip_all_tags( $product->get_short_description() );
		}
		$specs = $product->get_meta( '_objeka_specs' );
		if ( $specs ) {
			$rows = array();
			foreach ( explode( "\n", $specs ) as $line ) {
				$pair = array_map( 'trim', explode( ':', $line, 2 ) );
				if ( 2 === count( $pair ) && $pair[0] && $pair[1] ) {
					$rows[] = $pair;
				}
			}
			if ( $rows ) {
				$profile['specs'] = $rows;
			}
		}
		return $profile;
	}

	/**
	 * Render a section using actual product data and clearly labeled concept specs.
	 *
	 * @param array    $attributes Block attributes.
	 * @param string   $content Saved content.
	 * @param WP_Block $block Current block context.
	 * @return string Escaped frontend markup.
	 */
	public static function render( $attributes, $content, $block ) {
		if ( ! function_exists( 'wc_get_product' ) ) {
			return '';
		}
		if ( 'objeka-toolkit/product-offer' === $block->name ) {
			return self::offer( $attributes, $block );
		}
		$product = wc_get_product( $block->context['postId'] ?? get_the_ID() );
		if ( ! $product ) {
			return '';
		}
		$profile = self::profile( $product );
		ob_start();
		if ( 'objeka-toolkit/product-brief' === $block->name && $profile ) {
			?>
			<div 
			<?php
			// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- WordPress escapes wrapper attributes.
			echo get_block_wrapper_attributes(
				array(
					'class'                  => 'objeka-product-brief',
					'data-product-direction' => $profile['tone'],
				)
			);
			?>
					>
				<p class="objeka-kicker"><?php echo esc_html( $profile['category'] . ' / ' . $profile['kind'] ); ?></p>
				<p class="objeka-purchase-lead"><?php echo esc_html( $profile['intro'] ); ?></p>
				<ul class="objeka-purchase-benefits">
				<?php
				foreach ( $profile['benefits'] as $benefit ) :
					?>
					<li><?php echo esc_html( $benefit[0] ); ?></li><?php endforeach; ?></ul>
			</div>
			<?php
		} elseif ( 'objeka-toolkit/product-policies' === $block->name ) {
			?>
			<div <?php echo get_block_wrapper_attributes( array( 'class' => 'objeka-purchase-policies' ) ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- WordPress escapes wrapper attributes. ?>>
				<div><span aria-hidden="true">↗</span><div><strong><?php esc_html_e( 'Delivery, clearly priced', 'objeka-toolkit' ); ?></strong><p><?php esc_html_e( 'Available rates and destinations are calculated at checkout.', 'objeka-toolkit' ); ?></p></div></div>
				<div><span aria-hidden="true">↶</span><div><strong><?php esc_html_e( 'Questions before you choose?', 'objeka-toolkit' ); ?></strong><p><a href="<?php echo esc_url( home_url( '/faq/' ) ); ?>"><?php esc_html_e( 'Read delivery, returns & warranty FAQs', 'objeka-toolkit' ); ?></a> · <a href="<?php echo esc_url( home_url( '/contact/' ) ); ?>"><?php esc_html_e( 'Ask us', 'objeka-toolkit' ); ?></a></p></div></div>
			</div>
			<?php
		} elseif ( 'objeka-toolkit/product-story' === $block->name && $profile ) {
			$section = sanitize_key( $attributes['section'] ?? 'all' );
			$parts   = array( 'navigation', 'manifesto', 'scene', 'features', 'how', 'specifications', 'box', 'faq', 'final' );
			$layout  = Objeka_Toolkit_Editorial::layout( $product );
			$gallery = $product->get_gallery_image_ids();
			$scene   = $gallery ? $gallery[0] : $product->get_image_id();
			if ( 'all' !== $section && ! in_array( $section, $parts, true ) ) {
				return '';
			}
			?>
			<div 
			<?php
			// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- WordPress escapes wrapper attributes.
			echo get_block_wrapper_attributes(
				array(
					'class' => 'objeka-product-experience objeka-experience-' . $layout . ' objeka-part-' . $section,
					'style' => '--objeka-product-accent:' . sanitize_hex_color( $profile['accent'] ?? '#2448ef' ),
				)
			);
			?>
					>
			<?php
			foreach ( 'all' === $section ? $parts : array( $section ) as $part ) {
				include OBJEKA_TOOLKIT_DIR . 'templates/story/' . $part . '.php';
			}
			?>
			</div>
			<?php
		}
		return ob_get_clean();
	}

	/**
	 * Display live product pricing and an optional native simple-product form.
	 *
	 * @param array    $attributes Block attributes.
	 * @param WP_Block $block Product context, when available.
	 * @return string Escaped offer markup.
	 */
	public static function offer( $attributes, $block ) {
		$id = absint( $attributes['productId'] ?? 0 );
		if ( ! $id && ! empty( $attributes['demoKey'] ) ) {
			$id = wc_get_product_id_by_sku( 'OBJEKA-DEMO-' . strtoupper( sanitize_key( $attributes['demoKey'] ) ) );
		}
		$offer = wc_get_product( $id ? $id : ( $block->context['postId'] ?? get_the_ID() ) );
		if ( ! $offer || ( 'publish' !== $offer->get_status() && ! current_user_can( 'edit_post', $offer->get_id() ) ) ) {
			return '';
		}
		$mode   = 'purchase' === ( $attributes['mode'] ?? 'summary' ) ? 'purchase' : 'summary';
		$ready  = $offer->is_purchasable() && $offer->is_in_stock();
		$anchor = sanitize_html_class( $attributes['targetAnchor'] ?? 'forma-buy' );
		ob_start();
		?>
		<div <?php echo get_block_wrapper_attributes( array( 'class' => 'objeka-product-offer objeka-offer-' . $mode ) ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- WordPress escapes supported wrapper attributes. ?>>
			<p class="objeka-offer-price"><?php echo wp_kses_post( $offer->get_price_html() ); ?></p>
			<?php if ( 'summary' === $mode ) : ?>
				<a class="objeka-offer-button" href="<?php echo esc_url( $ready ? '#' . $anchor : $offer->get_permalink() ); ?>"><?php echo esc_html( $ready ? ( $attributes['label'] ?? __( 'Make it yours', 'objeka-toolkit' ) ) : __( 'View availability', 'objeka-toolkit' ) ); ?> <span aria-hidden="true">↗</span></a>
			<?php else : ?>
				<p class="objeka-offer-availability"><?php echo esc_html( $offer->is_in_stock() ? __( 'In stock', 'objeka-toolkit' ) : __( 'Currently unavailable', 'objeka-toolkit' ) ); ?></p>
				<?php
				if ( $ready && $offer->is_type( 'simple' ) ) {
					global $product; // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedVariableFound -- WooCommerce requires its own product global for native purchasing.
					$previous_product = $product;
					$product          = $offer; // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedVariableFound -- Scoped WooCommerce global, restored in finally.
					try {
						woocommerce_template_single_add_to_cart();
					} finally {
						$product = $previous_product; // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedVariableFound -- Restore WooCommerce's required global after rendering.
					}
				} else {
					?>
					<a class="objeka-offer-button" href="<?php echo esc_url( $offer->get_permalink() ); ?>"><?php esc_html_e( 'View product & options', 'objeka-toolkit' ); ?> <span aria-hidden="true">↗</span></a>
					<?php
				}
				?>
				<p class="objeka-offer-shipping"><?php esc_html_e( 'Shipping and applicable taxes are calculated at checkout.', 'objeka-toolkit' ); ?></p>
			<?php endif; ?>
		</div>
		<?php
		return ob_get_clean();
	}
}