<?php
/**
 * Permalink / page builder conflicts with C7 routes.
 *
 * @package C7DBT
 */

defined( 'ABSPATH' ) || exit;

class C7DBT_Conflicts {

	/**
	 * Reserved C7 route slugs.
	 *
	 * @return array
	 */
	public function reserved_slugs() {
		return array(
			'collection',
			'product',
			'cart',
			'checkout',
			'club',
			'profile',
			'reservation',
			'reservations',
		);
	}

	/**
	 * Find conflicting pages and builder issues.
	 *
	 * @return array
	 */
	public function find_issues() {
		$issues = array();

		foreach ( $this->reserved_slugs() as $slug ) {
			$page = get_page_by_path( $slug );
			if ( ! $page ) {
				// Also try get_posts by name for non-hierarchical edge cases.
				$pages = get_posts(
					array(
						'name'        => $slug,
						'post_type'   => 'page',
						'post_status' => array( 'publish', 'draft', 'private' ),
						'numberposts' => 1,
					)
				);
				$page = $pages ? $pages[0] : null;
			}

			if ( ! $page ) {
				continue;
			}

			$has_elementor = $this->page_uses_elementor( $page->ID );
			$is_critical   = in_array( $slug, array( 'checkout', 'cart', 'club' ), true );

			if ( $has_elementor && $is_critical ) {
				$issues[] = array(
					'type'       => 'elementor_critical',
					'severity'   => 'error',
					'needs_dev'  => true,
					'slug'       => $slug,
					'page_id'    => (int) $page->ID,
					'title'      => $page->post_title,
					'message'    => sprintf(
						/* translators: %s: slug */
						__( 'Page “%s” uses Elementor. Full canvas / heavy builders on checkout, cart, or club often break Commerce7 modals.', '7labs-debug-branding-for-commerce7' ),
						$slug
					),
					'fix'        => __( 'Use the block editor (or classic) with the Commerce7 default content block on this page.', '7labs-debug-branding-for-commerce7' ),
				);
			} elseif ( $has_elementor ) {
				$issues[] = array(
					'type'    => 'elementor_notice',
					'severity' => 'warn',
					'slug'    => $slug,
					'page_id' => (int) $page->ID,
					'title'   => $page->post_title,
					'message' => sprintf(
						/* translators: %s: slug */
						__( 'Page “%s” uses Elementor. Ensure the Commerce7 default content placeholder is present.', '7labs-debug-branding-for-commerce7' ),
						$slug
					),
					'fix'    => __( 'Keep C7 content block intact; avoid nested full-width templates that strip the c7-content mount.', '7labs-debug-branding-for-commerce7' ),
				);
			}
		}

		// Missing required pages.
		foreach ( array( 'collection', 'product', 'cart', 'checkout' ) as $required ) {
			$page = get_page_by_path( $required );
			if ( ! $page ) {
				$issues[] = array(
					'type'    => 'missing_page',
					'severity' => 'warn',
					'slug'    => $required,
					'page_id' => 0,
					'title'   => '',
					'message' => sprintf(
						/* translators: %s: slug */
						__( 'Required Commerce7 route page “/%s” was not found on this site.', '7labs-debug-branding-for-commerce7' ),
						$required
					),
					'fix'    => __( 'Create a published page with that exact slug and the Commerce7 default content block (or ask your developer to restore the standard shop pages).', '7labs-debug-branding-for-commerce7' ),
				);
			}
		}

		// Permalink structure.
		$structure = get_option( 'permalink_structure' );
		if ( empty( $structure ) ) {
			$issues[] = array(
				'type'    => 'permalinks',
				'severity' => 'error',
				'slug'    => '',
				'page_id' => 0,
				'title'   => '',
				'message' => __( 'Pretty permalinks are disabled. Commerce7 dynamic routes need Post name (or similar) permalinks.', '7labs-debug-branding-for-commerce7' ),
				'fix'    => __( 'Go to Settings → Permalinks, choose Post name, and Save.', '7labs-debug-branding-for-commerce7' ),
			);
		}

		// Subfolder install warning.
		$home_path = wp_parse_url( home_url( '/' ), PHP_URL_PATH );
		if ( is_string( $home_path ) && $home_path && '/' !== $home_path ) {
			$issues[] = array(
				'type'       => 'subfolder',
				'severity'   => 'error',
				'needs_dev'  => true,
				'slug'       => '',
				'page_id'    => 0,
				'title'      => '',
				'message'    => __( 'WordPress appears to be in a subfolder. Commerce7 generally requires a root domain or subdomain install.', '7labs-debug-branding-for-commerce7' ),
				'fix'        => __( 'Move WordPress to the domain root or a subdomain (e.g. shop.example.com), not /wordpress/.', '7labs-debug-branding-for-commerce7' ),
			);
		}

		if ( ! C7DBT_Helpers::is_c7wp_active() ) {
			$issues[] = array(
				'type'    => 'missing_c7wp',
				'severity' => 'error',
				'slug'    => '',
				'page_id' => 0,
				'title'   => '',
				'message' => __( 'Commerce7 does not appear to be connected on this site.', '7labs-debug-branding-for-commerce7' ),
				'fix'    => __( 'Add your Commerce7 tenant ID in your site’s Commerce7 integration settings, then confirm shop route pages exist.', '7labs-debug-branding-for-commerce7' ),
			);
		}

		$issues = array_merge( $issues, $this->find_plugin_conflicts() );

		return $issues;
	}

	/**
	 * Active plugins that commonly conflict with Commerce7 routes or checkout.
	 *
	 * @return array
	 */
	private function find_plugin_conflicts() {
		$issues = array();

		$cache = $this->first_active_plugin(
			array(
				'litespeed-cache/litespeed-cache.php'     => 'LiteSpeed Cache',
				'wp-rocket/wp-rocket.php'                 => 'WP Rocket',
				'w3-total-cache/w3-total-cache.php'       => 'W3 Total Cache',
				'wp-super-cache/wp-cache.php'             => 'WP Super Cache',
				'wp-fastest-cache/wpFastestCache.php'     => 'WP Fastest Cache',
				'autoptimize/autoptimize.php'             => 'Autoptimize',
				'sg-cachepress/sg-cachepress.php'         => 'SiteGround Optimizer',
				'cloudflare/cloudflare.php'               => 'Cloudflare',
			)
		);
		if ( $cache ) {
			$issues[] = array(
				'type'       => 'cache_plugin',
				'severity'   => 'warn',
				'needs_dev'  => true,
				'slug'       => '',
				'page_id'    => 0,
				'title'      => $cache['name'],
				'message'    => sprintf(
					/* translators: %s: plugin name */
					__( '%s is active. Cart, checkout, and club pages must be excluded from full-page cache or Commerce7 modals can fail.', '7labs-debug-branding-for-commerce7' ),
					$cache['name']
				),
				'fix'        => __( 'Exclude /cart, /checkout, /club, and /collection/* from cache — or ask your developer to configure cache rules.', '7labs-debug-branding-for-commerce7' ),
			);
		}

		$redirect = $this->first_active_plugin(
			array(
				'redirection/redirection.php'               => 'Redirection',
				'seo-by-rank-math/rank-math.php'            => 'Rank Math SEO',
				'wordpress-seo/wp-seo.php'                  => 'Yoast SEO',
				'all-in-one-seo-pack/all_in_one_seo_pack.php' => 'All in One SEO',
			)
		);
		if ( $redirect ) {
			$issues[] = array(
				'type'       => 'redirect_plugin',
				'severity'   => 'warn',
				'needs_dev'  => true,
				'slug'       => '',
				'page_id'    => 0,
				'title'      => $redirect['name'],
				'message'    => sprintf(
					/* translators: %s: plugin name */
					__( '%s can add redirects that override /collection or shop URLs. Review rules after changing your collection slug.', '7labs-debug-branding-for-commerce7' ),
					$redirect['name']
				),
				'fix'        => __( 'Audit redirect rules so /collection and your live shop slug are not caught by old SEO redirects.', '7labs-debug-branding-for-commerce7' ),
			);
		}

		$multilingual = $this->first_active_plugin(
			array(
				'sitepress-multilingual-cms/sitepress-multilingual-cms.php' => 'WPML',
				'polylang/polylang.php'                                     => 'Polylang',
				'polylang-pro/polylang.php'                                 => 'Polylang Pro',
				'translatepress-multilingual/index.php'                     => 'TranslatePress',
			)
		);
		if ( $multilingual ) {
			$issues[] = array(
				'type'       => 'multilingual',
				'severity'   => 'warn',
				'needs_dev'  => true,
				'slug'       => '',
				'page_id'    => 0,
				'title'      => $multilingual['name'],
				'message'    => sprintf(
					/* translators: %s: plugin name */
					__( '%s is active. Multilingual setups often rewrite Commerce7 route URLs (/collection, /product, /checkout).', '7labs-debug-branding-for-commerce7' ),
					$multilingual['name']
				),
				'fix'        => __( 'Confirm each language has working shop URLs and that C7 pages are not duplicated with wrong slugs.', '7labs-debug-branding-for-commerce7' ),
			);
		}

		$consent = $this->first_active_plugin(
			array(
				'age-gate/age-gate.php'                     => 'Age Gate',
				'cookie-law-info/cookie-law-info.php'       => 'CookieYes (Cookie Law Info)',
				'complianz-gdpr/complianz-gpdr.php'         => 'Complianz',
				'gdpr-cookie-compliance/moove-gdpr.php'     => 'GDPR Cookie Compliance',
				'cookie-notice/cookie-notice.php'           => 'Cookie Notice',
			)
		);
		if ( $consent ) {
			$issues[] = array(
				'type'       => 'consent_gate',
				'severity'   => 'warn',
				'needs_dev'  => true,
				'slug'       => '',
				'page_id'    => 0,
				'title'      => $consent['name'],
				'message'    => sprintf(
					/* translators: %s: plugin name */
					__( '%s is active. Age gates and cookie banners can block Commerce7 scripts until configured correctly.', '7labs-debug-branding-for-commerce7' ),
					$consent['name']
				),
				'fix'        => __( 'Allow Commerce7 scripts before the gate fires on shop pages, or test Add to Cart in a private window.', '7labs-debug-branding-for-commerce7' ),
			);
		}

		return $issues;
	}

	/**
	 * Return first active plugin from a map of file => label.
	 *
	 * @param array $map Plugin file => human name.
	 * @return array|null
	 */
	private function first_active_plugin( array $map ) {
		if ( ! function_exists( 'is_plugin_active' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}
		foreach ( $map as $file => $name ) {
			if ( is_plugin_active( $file ) ) {
				return array(
					'file' => $file,
					'name' => $name,
				);
			}
		}
		return null;
	}

	/**
	 * Detect Elementor usage on a page.
	 *
	 * @param int $post_id Post ID.
	 * @return bool
	 */
	private function page_uses_elementor( $post_id ) {
		$edit_mode = get_post_meta( $post_id, '_elementor_edit_mode', true );
		if ( 'builder' === $edit_mode ) {
			return true;
		}
		$data = get_post_meta( $post_id, '_elementor_data', true );
		return ! empty( $data );
	}

	/**
	 * Dashboard status.
	 *
	 * @return array
	 */
	public function status() {
		$issues = $this->find_issues();
		$errors = array_filter(
			$issues,
			static function ( $i ) {
				return 'error' === $i['severity'];
			}
		);
		$count  = count( $issues );

		if ( count( $errors ) > 0 ) {
			return array(
				'status' => 'error',
				'label'  => __( 'Integration conflicts found', '7labs-debug-branding-for-commerce7' ),
				'detail' => sprintf(
					/* translators: %d: count */
					_n( '%d issue needs attention.', '%d issues need attention.', $count, '7labs-debug-branding-for-commerce7' ),
					$count
				),
				'count'  => $count,
			);
		}
		if ( $count > 0 ) {
			return array(
				'status' => 'warn',
				'label'  => __( 'Minor conflicts', '7labs-debug-branding-for-commerce7' ),
				'detail' => sprintf(
					/* translators: %d: count */
					_n( '%d warning.', '%d warnings.', $count, '7labs-debug-branding-for-commerce7' ),
					$count
				),
				'count'  => $count,
			);
		}
		return array(
			'status' => 'ok',
			'label'  => __( 'No route conflicts detected', '7labs-debug-branding-for-commerce7' ),
			'detail' => __( 'Required pages and permalinks look healthy.', '7labs-debug-branding-for-commerce7' ),
			'count'  => 0,
		);
	}
}