<?php
/**
 * Review and exclusion action handler.
 *
 * @package ContentCortex
 */

defined( 'ABSPATH' ) || exit;

/**
 * Class OCAP_Review
 */
class OCAP_Review {

	/**
	 * Initialize hooks.
	 */
	public function init() {
		add_action( 'init', array( $this, 'register_meta' ) );
		add_action( 'admin_post_ocap_mark_reviewed', array( $this, 'handle_single_mark_reviewed' ) );
		add_action( 'admin_post_ocap_exclude_post', array( $this, 'handle_single_exclude' ) );
		add_action( 'admin_post_ocap_include_post', array( $this, 'handle_single_include' ) );
		add_action( 'admin_action_ocap_bulk_action', array( $this, 'handle_bulk_action' ) );

		// Legacy hook aliases for backward compatibility.
		add_action( 'admin_post_sct_mark_reviewed', array( $this, 'handle_single_mark_reviewed' ) );
		add_action( 'admin_post_sct_exclude_post', array( $this, 'handle_single_exclude' ) );
		add_action( 'admin_post_sct_include_post', array( $this, 'handle_single_include' ) );
		add_action( 'admin_action_sct_bulk_action', array( $this, 'handle_bulk_action' ) );

		// Invalidate cache on post modifications.
		add_action( 'save_post', array( $this, 'on_post_change' ), 10, 2 );
		add_action( 'deleted_post', array( $this, 'on_post_delete' ) );
		add_action( 'trash_post', array( $this, 'on_post_delete' ) );
		add_action( 'untrash_post', array( $this, 'on_post_delete' ) );
	}

	/**
	 * Register post meta keys with validation/sanitization.
	 */
	public function register_meta() {
		register_post_meta(
			'',
			'_ocap_last_reviewed',
			array(
				'type'              => 'string',
				'description'       => __( 'Last reviewed GMT datetime for ContentCortex – Outdated Content Alerts', 'contentcortex' ),
				'single'            => true,
				'sanitize_callback' => array( $this, 'sanitize_datetime' ),
				'show_in_rest'      => false,
				'auth_callback'     => function () {
					return current_user_can( 'edit_posts' );
				},
			)
		);

		register_post_meta(
			'',
			'_ocap_excluded',
			array(
				'type'              => 'integer',
				'description'       => __( 'Whether post is excluded from ContentCortex – Outdated Content Alerts', 'contentcortex' ),
				'single'            => true,
				'sanitize_callback' => 'absint',
				'show_in_rest'      => false,
				'auth_callback'     => function () {
					return current_user_can( 'edit_posts' );
				},
			)
		);
	}

	/**
	 * Sanitize GMT datetime string.
	 *
	 * @param mixed $value Input value.
	 * @return string Sanitized datetime or empty string.
	 */
	public function sanitize_datetime( $value ) {
		if ( ! is_string( $value ) ) {
			return '';
		}

		$timestamp = strtotime( $value );
		if ( false === $timestamp ) {
			return '';
		}

		return gmdate( 'Y-m-d H:i:s', $timestamp );
	}

	/**
	 * Handle single "Mark as reviewed" action.
	 */
	public function handle_single_mark_reviewed() {
		$post_id = isset( $_GET['post_id'] ) ? absint( $_GET['post_id'] ) : 0;
		if ( ! check_admin_referer( 'ocap_mark_reviewed_' . $post_id, '_wpnonce', false ) && ! check_admin_referer( 'sct_mark_reviewed_' . $post_id, '_wpnonce', false ) ) {
			wp_die( esc_html__( 'Security check failed.', 'contentcortex' ) );
		}

		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			wp_die( esc_html__( 'You do not have permission to review this item.', 'contentcortex' ) );
		}

		$this->mark_as_reviewed( $post_id );
		ocap_clear_stale_cache();

		$redirect = isset( $_GET['redirect_to'] ) ? esc_url_raw( wp_unslash( $_GET['redirect_to'] ) ) : ocap_get_report_url();
		$redirect = add_query_arg( 'ocap_notice', 'reviewed', $redirect );

		wp_safe_redirect( $redirect );
		exit;
	}

	/**
	 * Handle single "Exclude from report" action.
	 */
	public function handle_single_exclude() {
		$post_id = isset( $_GET['post_id'] ) ? absint( $_GET['post_id'] ) : 0;
		if ( ! check_admin_referer( 'ocap_exclude_post_' . $post_id, '_wpnonce', false ) && ! check_admin_referer( 'sct_exclude_post_' . $post_id, '_wpnonce', false ) ) {
			wp_die( esc_html__( 'Security check failed.', 'contentcortex' ) );
		}

		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			wp_die( esc_html__( 'You do not have permission to exclude this item.', 'contentcortex' ) );
		}

		$this->exclude_post( $post_id );
		ocap_clear_stale_cache();

		$redirect = isset( $_GET['redirect_to'] ) ? esc_url_raw( wp_unslash( $_GET['redirect_to'] ) ) : ocap_get_report_url();
		$redirect = add_query_arg( 'ocap_notice', 'excluded', $redirect );

		wp_safe_redirect( $redirect );
		exit;
	}

	/**
	 * Handle single "Include again" action.
	 */
	public function handle_single_include() {
		$post_id = isset( $_GET['post_id'] ) ? absint( $_GET['post_id'] ) : 0;
		if ( ! check_admin_referer( 'ocap_include_post_' . $post_id, '_wpnonce', false ) && ! check_admin_referer( 'sct_include_post_' . $post_id, '_wpnonce', false ) ) {
			wp_die( esc_html__( 'Security check failed.', 'contentcortex' ) );
		}

		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			wp_die( esc_html__( 'You do not have permission to restore this item.', 'contentcortex' ) );
		}

		$this->include_post( $post_id );
		ocap_clear_stale_cache();

		$redirect = isset( $_GET['redirect_to'] ) ? esc_url_raw( wp_unslash( $_GET['redirect_to'] ) ) : ocap_get_report_url( array( 'view' => 'excluded' ) );
		$redirect = add_query_arg( 'ocap_notice', 'included', $redirect );

		wp_safe_redirect( $redirect );
		exit;
	}

	/**
	 * Handle bulk actions from the report table.
	 */
	public function handle_bulk_action() {
		check_admin_referer( 'bulk-posts' );

		$action = '';
		if ( ! empty( $_REQUEST['action'] ) && '-1' !== $_REQUEST['action'] ) {
			$action = sanitize_text_field( wp_unslash( $_REQUEST['action'] ) );
		} elseif ( ! empty( $_REQUEST['action2'] ) && '-1' !== $_REQUEST['action2'] ) {
			$action = sanitize_text_field( wp_unslash( $_REQUEST['action2'] ) );
		}

		$post_ids = isset( $_REQUEST['post'] ) ? array_map( 'absint', (array) $_REQUEST['post'] ) : array();

		if ( empty( $action ) || empty( $post_ids ) ) {
			wp_safe_redirect( ocap_get_report_url() );
			exit;
		}

		$processed = 0;

		foreach ( $post_ids as $post_id ) {
			if ( ! current_user_can( 'edit_post', $post_id ) ) {
				continue;
			}

			if ( 'mark_reviewed' === $action ) {
				$this->mark_as_reviewed( $post_id );
				++$processed;
			} elseif ( 'exclude' === $action ) {
				$this->exclude_post( $post_id );
				++$processed;
			} elseif ( 'include' === $action ) {
				$this->include_post( $post_id );
				++$processed;
			}
		}

		if ( $processed > 0 ) {
			ocap_clear_stale_cache();
		}

		$view     = isset( $_REQUEST['view'] ) ? sanitize_key( wp_unslash( $_REQUEST['view'] ) ) : 'stale';
		$redirect = ocap_get_report_url( array( 'view' => $view ) );
		$redirect = add_query_arg(
			array(
				'ocap_notice' => 'bulk_' . $action,
				'count'       => $processed,
			),
			$redirect
		);

		wp_safe_redirect( $redirect );
		exit;
	}

	/**
	 * Mark a single post as reviewed.
	 *
	 * @param int $post_id Post ID.
	 */
	public function mark_as_reviewed( $post_id ) {
		$gmt_now = gmdate( 'Y-m-d H:i:s' );
		update_post_meta( $post_id, '_ocap_last_reviewed', $gmt_now );
		update_post_meta( $post_id, '_sct_last_reviewed', $gmt_now );
		do_action( 'ocap_post_marked_reviewed', $post_id, $gmt_now );
	}

	/**
	 * Exclude a post from stale reports.
	 *
	 * @param int $post_id Post ID.
	 */
	public function exclude_post( $post_id ) {
		update_post_meta( $post_id, '_ocap_excluded', 1 );
		update_post_meta( $post_id, '_sct_excluded', 1 );
		do_action( 'ocap_post_excluded', $post_id );
	}

	/**
	 * Include an excluded post back into stale reports.
	 *
	 * @param int $post_id Post ID.
	 */
	public function include_post( $post_id ) {
		delete_post_meta( $post_id, '_ocap_excluded' );
		delete_post_meta( $post_id, '_sct_excluded' );
		do_action( 'ocap_post_included', $post_id );
	}

	/**
	 * On post save, invalidate count cache.
	 *
	 * @param int     $post_id Post ID.
	 * @param WP_Post $post    Post object.
	 */
	public function on_post_change( $post_id, $post ) {
		unset( $post );
		if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
			return;
		}

		if ( wp_is_post_revision( $post_id ) ) {
			return;
		}

		ocap_clear_stale_cache();
	}

	/**
	 * On post delete/trash, invalidate count cache.
	 *
	 * @param int $post_id Post ID.
	 */
	public function on_post_delete( $post_id ) {
		unset( $post_id );
		ocap_clear_stale_cache();
	}
}