<?php
/**
 * Reads meta data written by Rank Math so it can be migrated into
 * ABDS SEO's own format.
 *
 * @package ABDS_SEO
 */

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

/**
 * Migration adapter for Rank Math.
 */
class ABDS_SEO_Adapter_RankMath implements ABDS_SEO_Migration_Adapter {

	use ABDS_SEO_Plugin_File_Locator;

	/**
	 * Whether Rank Math is currently installed and active.
	 *
	 * @return bool
	 */
	public function is_active(): bool {
		return defined( 'RANK_MATH_VERSION' ) || class_exists( 'RankMath' );
	}

	/**
	 * Human-readable name of the source plugin.
	 *
	 * @return string
	 */
	public function get_name(): string {
		return 'Rank Math';
	}

	/**
	 * Machine-readable slug used as `source_plugin` in the migration log.
	 *
	 * @return string
	 */
	public function get_slug(): string {
		return 'rankmath';
	}

	/**
	 * Reads Rank Math's meta title for a post.
	 *
	 * @param int $post_id Post ID.
	 * @return string
	 */
	public function get_meta_title( int $post_id ): string {
		return (string) get_post_meta( $post_id, 'rank_math_title', true );
	}

	/**
	 * Reads Rank Math's meta description for a post.
	 *
	 * @param int $post_id Post ID.
	 * @return string
	 */
	public function get_meta_description( int $post_id ): string {
		return (string) get_post_meta( $post_id, 'rank_math_description', true );
	}

	/**
	 * Reads Rank Math's canonical URL for a post.
	 *
	 * @param int $post_id Post ID.
	 * @return string
	 */
	public function get_canonical( int $post_id ): string {
		return (string) get_post_meta( $post_id, 'rank_math_canonical_url', true );
	}

	/**
	 * Reads Rank Math's robots meta (noindex/nofollow) for a post.
	 *
	 * @param int $post_id Post ID.
	 * @return array{noindex: bool, nofollow: bool}
	 */
	public function get_robots( int $post_id ): array {
		$robots = get_post_meta( $post_id, 'rank_math_robots', true );
		$robots = is_array( $robots ) ? $robots : array();

		return array(
			'noindex'  => in_array( 'noindex', $robots, true ),
			'nofollow' => in_array( 'nofollow', $robots, true ),
		);
	}

	/**
	 * Reads Rank Math's Open Graph (Facebook) title for a post.
	 *
	 * @param int $post_id Post ID.
	 * @return string
	 */
	public function get_og_title( int $post_id ): string {
		return (string) get_post_meta( $post_id, 'rank_math_facebook_title', true );
	}

	/**
	 * Reads Rank Math's Open Graph (Facebook) description for a post.
	 *
	 * @param int $post_id Post ID.
	 * @return string
	 */
	public function get_og_description( int $post_id ): string {
		return (string) get_post_meta( $post_id, 'rank_math_facebook_description', true );
	}

	/**
	 * Reads Rank Math's primary focus keyword for a post. Rank Math stores
	 * multiple comma-separated keywords; the first is the primary one.
	 *
	 * @param int $post_id Post ID.
	 * @return string
	 */
	public function get_focus_keyword( int $post_id ): string {
		$keyword = (string) get_post_meta( $post_id, 'rank_math_focus_keyword', true );
		$parts   = array_filter( array_map( 'trim', explode( ',', $keyword ) ) );

		return $parts ? reset( $parts ) : '';
	}

	/**
	 * Counts posts that have Rank Math title or description data set.
	 *
	 * @return int
	 */
	public function count_migratable_pages(): int {
		global $wpdb;

		// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- {$wpdb->postmeta} is WP core's own table-name property, never user input; both meta_key values are passed through $wpdb->prepare(). Only runs when previewing/counting a migration from the admin UI, not a cacheable read path.
		$count = (int) $wpdb->get_var(
			$wpdb->prepare(
				"SELECT COUNT(DISTINCT post_id) FROM {$wpdb->postmeta} WHERE meta_key IN (%s, %s) AND meta_value != ''",
				'rank_math_title',
				'rank_math_description'
			)
		);
		// phpcs:enable

		return $count;
	}

	/**
	 * Deactivates Rank Math if it's currently active.
	 *
	 * @return bool True if it was active and is now deactivated.
	 */
	public function deactivate_self(): bool {
		if ( ! function_exists( 'deactivate_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}

		$plugin_file = $this->find_active_plugin_file( 'rank-math.php' );
		if ( ! $plugin_file ) {
			return false;
		}

		deactivate_plugins( $plugin_file );

		return ! is_plugin_active( $plugin_file );
	}
}