<?php
/**
 * Scan published page content for empty C7 shop links.
 *
 * @package C7DBT
 */

defined( 'ABSPATH' ) || exit;

class C7DBT_Content_Scanner {

	/**
	 * Find pages with hrefs to bare /collection or /product.
	 *
	 * @param int $limit Max pages to scan.
	 * @return array
	 */
	public function find_issues( $limit = 100 ) {
		$issues = array();
		$pages  = get_posts(
			array(
				'post_type'      => array( 'page', 'post' ),
				'post_status'    => 'publish',
				'posts_per_page' => $limit,
				'orderby'        => 'modified',
				'order'          => 'DESC',
			)
		);

		$patterns = array(
			'#href=["\']([^"\']*?/collection/?["\'])#i',
			'#href=["\']([^"\']*?/product/?["\'])#i',
		);

		$home = untrailingslashit( home_url() );

		foreach ( $pages as $page ) {
			$content = (string) $page->post_content;
			if ( '' === $content ) {
				continue;
			}

			$found = array();
			foreach ( $patterns as $pattern ) {
				if ( preg_match_all( $pattern, $content, $matches ) ) {
					foreach ( $matches[1] as $raw ) {
						$url = trim( $raw, "\"'" );
						// Ignore already-slugged collection/foo.
						$path = wp_parse_url( $url, PHP_URL_PATH );
						if ( ! is_string( $path ) ) {
							continue;
						}
						$norm = untrailingslashit( $path );
						if ( preg_match( '#/(collection|product)$#', $norm ) ) {
							$found[] = $url;
						}
					}
				}
			}

			// Also check Elementor data JSON for URLs.
			$el = get_post_meta( $page->ID, '_elementor_data', true );
			if ( is_string( $el ) && $el ) {
				if ( preg_match_all( '#' . preg_quote( $home, '#' ) . '/(collection|product)/?(?:["\'\\\\]|$)#i', $el, $m ) ) {
					foreach ( $m[0] as $hit ) {
						$found[] = trim( $hit, "\"'\\" );
					}
				}
				// Relative in JSON.
				if ( preg_match_all( '#"(/(?:collection|product)/?)"#', $el, $m2 ) ) {
					foreach ( $m2[1] as $rel ) {
						if ( preg_match( '#^/(collection|product)/?$#', $rel ) ) {
							$found[] = $rel;
						}
					}
				}
			}

			$found = array_values( array_unique( $found ) );
			if ( $found ) {
				$issues[] = array(
					'page_id'   => (int) $page->ID,
					'title'     => $page->post_title,
					'edit_url'  => get_edit_post_link( $page->ID, 'raw' ),
					'view_url'  => get_permalink( $page->ID ),
					'urls'      => $found,
					'post_type' => $page->post_type,
				);
			}
		}

		return $issues;
	}

	/**
	 * Status for health.
	 *
	 * @return array
	 */
	public function status() {
		$issues = $this->find_issues( 50 );
		$count  = count( $issues );
		if ( $count > 0 ) {
			return array(
				'status' => 'warn',
				'label'  => __( 'Empty shop links in content', '7labs-debug-branding-for-commerce7' ),
				'detail' => sprintf(
					/* translators: %d: pages */
					_n( '%d page/post links to empty /collection or /product.', '%d pages/posts link to empty /collection or /product.', $count, '7labs-debug-branding-for-commerce7' ),
					$count
				),
				'count'  => $count,
			);
		}
		return array(
			'status' => 'ok',
			'label'  => __( 'Page content links OK', '7labs-debug-branding-for-commerce7' ),
			'detail' => __( 'No empty C7 base URLs found in recent page content.', '7labs-debug-branding-for-commerce7' ),
			'count'  => 0,
		);
	}
}