<?php
/**
 * Room post type.
 *
 * Custom post type for BnB rooms.
 *
 * @package Magdev\WpBnb\PostTypes
 */

declare( strict_types=1 );

namespace Magdev\WpBnb\PostTypes;

use Magdev\WpBnb\Taxonomies\Amenity;
use Magdev\WpBnb\Taxonomies\RoomType;

/**
 * Room post type class.
 */
final class Room {

	/**
	 * Post type slug.
	 *
	 * @var string
	 */
	public const POST_TYPE = 'bnb_room';

	/**
	 * Meta key prefix.
	 *
	 * @var string
	 */
	private const META_PREFIX = '_bnb_room_';

	/**
	 * Initialize the post type.
	 *
	 * @return void
	 */
	public static function init(): void {
		add_action( 'init', array( self::class, 'register' ) );
		add_action( 'add_meta_boxes', array( self::class, 'add_meta_boxes' ) );
		add_action( 'save_post_' . self::POST_TYPE, array( self::class, 'save_meta' ), 10, 2 );
		add_filter( 'manage_' . self::POST_TYPE . '_posts_columns', array( self::class, 'add_columns' ) );
		add_action( 'manage_' . self::POST_TYPE . '_posts_custom_column', array( self::class, 'render_column' ), 10, 2 );
		add_filter( 'manage_edit-' . self::POST_TYPE . '_sortable_columns', array( self::class, 'sortable_columns' ) );
		add_action( 'restrict_manage_posts', array( self::class, 'add_building_filter' ) );
		add_action( 'pre_get_posts', array( self::class, 'filter_by_building' ) );
		add_filter( 'enter_title_here', array( self::class, 'change_title_placeholder' ), 10, 2 );
	}

	/**
	 * Register the post type.
	 *
	 * @return void
	 */
	public static function register(): void {
		$labels = array(
			'name'                  => _x( 'Rooms', 'post type general name', 'wp-bnb' ),
			'singular_name'         => _x( 'Room', 'post type singular name', 'wp-bnb' ),
			'menu_name'             => _x( 'Rooms', 'admin menu', 'wp-bnb' ),
			'name_admin_bar'        => _x( 'Room', 'add new on admin bar', 'wp-bnb' ),
			'add_new'               => _x( 'Add New', 'room', 'wp-bnb' ),
			'add_new_item'          => __( 'Add New Room', 'wp-bnb' ),
			'new_item'              => __( 'New Room', 'wp-bnb' ),
			'edit_item'             => __( 'Edit Room', 'wp-bnb' ),
			'view_item'             => __( 'View Room', 'wp-bnb' ),
			'all_items'             => __( 'Rooms', 'wp-bnb' ),
			'search_items'          => __( 'Search Rooms', 'wp-bnb' ),
			'parent_item_colon'     => __( 'Parent Rooms:', 'wp-bnb' ),
			'not_found'             => __( 'No rooms found.', 'wp-bnb' ),
			'not_found_in_trash'    => __( 'No rooms found in Trash.', 'wp-bnb' ),
			'featured_image'        => __( 'Room Image', 'wp-bnb' ),
			'set_featured_image'    => __( 'Set room image', 'wp-bnb' ),
			'remove_featured_image' => __( 'Remove room image', 'wp-bnb' ),
			'use_featured_image'    => __( 'Use as room image', 'wp-bnb' ),
			'archives'              => __( 'Room archives', 'wp-bnb' ),
			'insert_into_item'      => __( 'Insert into room', 'wp-bnb' ),
			'uploaded_to_this_item' => __( 'Uploaded to this room', 'wp-bnb' ),
			'filter_items_list'     => __( 'Filter rooms list', 'wp-bnb' ),
			'items_list_navigation' => __( 'Rooms list navigation', 'wp-bnb' ),
			'items_list'            => __( 'Rooms list', 'wp-bnb' ),
		);

		$args = array(
			'labels'              => $labels,
			'public'              => true,
			'publicly_queryable'  => true,
			'show_ui'             => true,
			'show_in_menu'        => 'wp-bnb',
			'query_var'           => true,
			'rewrite'             => array(
				'slug'       => 'room',
				'with_front' => false,
			),
			'capability_type'     => 'post',
			'has_archive'         => true,
			'hierarchical'        => false,
			'menu_position'       => null,
			'menu_icon'           => 'dashicons-admin-home',
			'supports'            => array(
				'title',
				'editor',
				'thumbnail',
				'excerpt',
				'revisions',
			),
			'show_in_rest'        => true,
			'rest_base'           => 'rooms',
			'rest_controller_class' => 'WP_REST_Posts_Controller',
			'taxonomies'          => array( RoomType::TAXONOMY, Amenity::TAXONOMY ),
		);

		register_post_type( self::POST_TYPE, $args );
	}

	/**
	 * Add meta boxes.
	 *
	 * @return void
	 */
	public static function add_meta_boxes(): void {
		add_meta_box(
			'bnb_room_building',
			__( 'Building', 'wp-bnb' ),
			array( self::class, 'render_building_meta_box' ),
			self::POST_TYPE,
			'side',
			'high'
		);

		add_meta_box(
			'bnb_room_details',
			__( 'Room Details', 'wp-bnb' ),
			array( self::class, 'render_details_meta_box' ),
			self::POST_TYPE,
			'normal',
			'high'
		);

		add_meta_box(
			'bnb_room_gallery',
			__( 'Room Gallery', 'wp-bnb' ),
			array( self::class, 'render_gallery_meta_box' ),
			self::POST_TYPE,
			'normal',
			'default'
		);
	}

	/**
	 * Render building selection meta box.
	 *
	 * @param \WP_Post $post Current post object.
	 * @return void
	 */
	public static function render_building_meta_box( \WP_Post $post ): void {
		wp_nonce_field( 'bnb_room_meta', 'bnb_room_meta_nonce' );

		$building_id = get_post_meta( $post->ID, self::META_PREFIX . 'building_id', true );
		$buildings   = get_posts(
			array(
				'post_type'      => Building::POST_TYPE,
				'post_status'    => 'publish',
				'posts_per_page' => -1,
				'orderby'        => 'title',
				'order'          => 'ASC',
			)
		);
		?>
		<p>
			<label for="bnb_room_building_id"><?php esc_html_e( 'Select Building', 'wp-bnb' ); ?></label>
		</p>
		<select id="bnb_room_building_id" name="bnb_room_building_id" class="widefat" required>
			<option value=""><?php esc_html_e( '— Select Building —', 'wp-bnb' ); ?></option>
			<?php foreach ( $buildings as $building ) : ?>
				<option value="<?php echo esc_attr( $building->ID ); ?>" <?php selected( $building_id, $building->ID ); ?>>
					<?php echo esc_html( $building->post_title ); ?>
				</option>
			<?php endforeach; ?>
		</select>
		<?php if ( empty( $buildings ) ) : ?>
			<p class="description">
				<?php
				printf(
					/* translators: %s: Link to add new building */
					esc_html__( 'No buildings found. %s first.', 'wp-bnb' ),
					'<a href="' . esc_url( admin_url( 'post-new.php?post_type=' . Building::POST_TYPE ) ) . '">' . esc_html__( 'Add a building', 'wp-bnb' ) . '</a>'
				);
				?>
			</p>
		<?php endif; ?>
		<?php
	}

	/**
	 * Render room details meta box.
	 *
	 * @param \WP_Post $post Current post object.
	 * @return void
	 */
	public static function render_details_meta_box( \WP_Post $post ): void {
		$room_number = get_post_meta( $post->ID, self::META_PREFIX . 'room_number', true );
		$floor       = get_post_meta( $post->ID, self::META_PREFIX . 'floor', true );
		$capacity    = get_post_meta( $post->ID, self::META_PREFIX . 'capacity', true );
		$max_adults  = get_post_meta( $post->ID, self::META_PREFIX . 'max_adults', true );
		$max_children = get_post_meta( $post->ID, self::META_PREFIX . 'max_children', true );
		$size        = get_post_meta( $post->ID, self::META_PREFIX . 'size', true );
		$beds        = get_post_meta( $post->ID, self::META_PREFIX . 'beds', true );
		$bathrooms   = get_post_meta( $post->ID, self::META_PREFIX . 'bathrooms', true );
		$status      = get_post_meta( $post->ID, self::META_PREFIX . 'status', true );
		?>
		<table class="form-table">
			<tr>
				<th scope="row">
					<label for="bnb_room_room_number"><?php esc_html_e( 'Room Number', 'wp-bnb' ); ?></label>
				</th>
				<td>
					<input type="text" id="bnb_room_room_number" name="bnb_room_room_number"
						   value="<?php echo esc_attr( $room_number ); ?>" class="regular-text">
					<p class="description"><?php esc_html_e( 'Room identifier (e.g., 101, A-12, Suite B)', 'wp-bnb' ); ?></p>
				</td>
			</tr>
			<tr>
				<th scope="row">
					<label for="bnb_room_floor"><?php esc_html_e( 'Floor', 'wp-bnb' ); ?></label>
				</th>
				<td>
					<input type="number" id="bnb_room_floor" name="bnb_room_floor"
						   value="<?php echo esc_attr( $floor ); ?>" class="small-text" min="0">
				</td>
			</tr>
			<tr>
				<th scope="row">
					<label for="bnb_room_size"><?php esc_html_e( 'Size (m²)', 'wp-bnb' ); ?></label>
				</th>
				<td>
					<input type="number" id="bnb_room_size" name="bnb_room_size"
						   value="<?php echo esc_attr( $size ); ?>" class="small-text" min="1" step="0.1">
				</td>
			</tr>
			<tr>
				<th scope="row">
					<?php esc_html_e( 'Capacity', 'wp-bnb' ); ?>
				</th>
				<td>
					<label for="bnb_room_capacity"><?php esc_html_e( 'Total Guests', 'wp-bnb' ); ?></label>
					<input type="number" id="bnb_room_capacity" name="bnb_room_capacity"
						   value="<?php echo esc_attr( $capacity ?: '2' ); ?>" class="small-text" min="1" max="20">
					<br><br>
					<label for="bnb_room_max_adults"><?php esc_html_e( 'Max Adults', 'wp-bnb' ); ?></label>
					<input type="number" id="bnb_room_max_adults" name="bnb_room_max_adults"
						   value="<?php echo esc_attr( $max_adults ?: '2' ); ?>" class="small-text" min="1" max="10">
					<br><br>
					<label for="bnb_room_max_children"><?php esc_html_e( 'Max Children', 'wp-bnb' ); ?></label>
					<input type="number" id="bnb_room_max_children" name="bnb_room_max_children"
						   value="<?php echo esc_attr( $max_children ?: '0' ); ?>" class="small-text" min="0" max="10">
				</td>
			</tr>
			<tr>
				<th scope="row">
					<label for="bnb_room_beds"><?php esc_html_e( 'Beds', 'wp-bnb' ); ?></label>
				</th>
				<td>
					<input type="text" id="bnb_room_beds" name="bnb_room_beds"
						   value="<?php echo esc_attr( $beds ); ?>" class="regular-text">
					<p class="description"><?php esc_html_e( 'Description of beds (e.g., 1 King, 2 Singles)', 'wp-bnb' ); ?></p>
				</td>
			</tr>
			<tr>
				<th scope="row">
					<label for="bnb_room_bathrooms"><?php esc_html_e( 'Bathrooms', 'wp-bnb' ); ?></label>
				</th>
				<td>
					<input type="number" id="bnb_room_bathrooms" name="bnb_room_bathrooms"
						   value="<?php echo esc_attr( $bathrooms ?: '1' ); ?>" class="small-text" min="0" max="5" step="0.5">
				</td>
			</tr>
			<tr>
				<th scope="row">
					<label for="bnb_room_status"><?php esc_html_e( 'Room Status', 'wp-bnb' ); ?></label>
				</th>
				<td>
					<select id="bnb_room_status" name="bnb_room_status">
						<?php foreach ( self::get_room_statuses() as $key => $label ) : ?>
							<option value="<?php echo esc_attr( $key ); ?>" <?php selected( $status ?: 'available', $key ); ?>>
								<?php echo esc_html( $label ); ?>
							</option>
						<?php endforeach; ?>
					</select>
				</td>
			</tr>
		</table>
		<?php
	}

	/**
	 * Render gallery meta box.
	 *
	 * @param \WP_Post $post Current post object.
	 * @return void
	 */
	public static function render_gallery_meta_box( \WP_Post $post ): void {
		$gallery_ids = get_post_meta( $post->ID, self::META_PREFIX . 'gallery', true );
		$gallery_ids = $gallery_ids ? explode( ',', $gallery_ids ) : array();
		?>
		<div id="bnb-room-gallery" class="bnb-gallery-container">
			<div class="bnb-gallery-images">
				<?php foreach ( $gallery_ids as $image_id ) : ?>
					<?php $image = wp_get_attachment_image_src( $image_id, 'thumbnail' ); ?>
					<?php if ( $image ) : ?>
						<div class="bnb-gallery-image" data-id="<?php echo esc_attr( $image_id ); ?>">
							<img src="<?php echo esc_url( $image[0] ); ?>" alt="">
							<button type="button" class="bnb-remove-image">&times;</button>
						</div>
					<?php endif; ?>
				<?php endforeach; ?>
			</div>
			<input type="hidden" id="bnb_room_gallery" name="bnb_room_gallery"
				   value="<?php echo esc_attr( implode( ',', $gallery_ids ) ); ?>">
			<button type="button" id="bnb-add-gallery-images" class="button">
				<?php esc_html_e( 'Add Images', 'wp-bnb' ); ?>
			</button>
		</div>
		<p class="description"><?php esc_html_e( 'Add additional images for this room. Drag to reorder.', 'wp-bnb' ); ?></p>
		<?php
	}

	/**
	 * Save post meta.
	 *
	 * @param int      $post_id Post ID.
	 * @param \WP_Post $post    Post object.
	 * @return void
	 */
	public static function save_meta( int $post_id, \WP_Post $post ): void {
		// Verify nonce.
		if ( ! isset( $_POST['bnb_room_meta_nonce'] ) ||
			 ! wp_verify_nonce( sanitize_key( $_POST['bnb_room_meta_nonce'] ), 'bnb_room_meta' ) ) {
			return;
		}

		// Check autosave.
		if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
			return;
		}

		// Check permissions.
		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			return;
		}

		// Building ID.
		if ( isset( $_POST['bnb_room_building_id'] ) ) {
			update_post_meta(
				$post_id,
				self::META_PREFIX . 'building_id',
				absint( $_POST['bnb_room_building_id'] )
			);
		}

		// Text fields.
		$text_fields = array( 'room_number', 'beds', 'status' );
		foreach ( $text_fields as $field ) {
			$key = 'bnb_room_' . $field;
			if ( isset( $_POST[ $key ] ) ) {
				update_post_meta(
					$post_id,
					self::META_PREFIX . $field,
					sanitize_text_field( wp_unslash( $_POST[ $key ] ) )
				);
			}
		}

		// Numeric fields.
		$numeric_fields = array( 'floor', 'capacity', 'max_adults', 'max_children' );
		foreach ( $numeric_fields as $field ) {
			$key = 'bnb_room_' . $field;
			if ( isset( $_POST[ $key ] ) ) {
				update_post_meta(
					$post_id,
					self::META_PREFIX . $field,
					absint( $_POST[ $key ] )
				);
			}
		}

		// Float fields.
		$float_fields = array( 'size', 'bathrooms' );
		foreach ( $float_fields as $field ) {
			$key = 'bnb_room_' . $field;
			if ( isset( $_POST[ $key ] ) ) {
				update_post_meta(
					$post_id,
					self::META_PREFIX . $field,
					floatval( $_POST[ $key ] )
				);
			}
		}

		// Gallery.
		if ( isset( $_POST['bnb_room_gallery'] ) ) {
			$gallery_ids = sanitize_text_field( wp_unslash( $_POST['bnb_room_gallery'] ) );
			// Validate that each ID is numeric.
			$ids = array_filter( explode( ',', $gallery_ids ), 'is_numeric' );
			update_post_meta(
				$post_id,
				self::META_PREFIX . 'gallery',
				implode( ',', $ids )
			);
		}
	}

	/**
	 * Add custom columns to the post list.
	 *
	 * @param array $columns Existing columns.
	 * @return array
	 */
	public static function add_columns( array $columns ): array {
		$new_columns = array();
		foreach ( $columns as $key => $value ) {
			if ( 'taxonomy-bnb_room_type' === $key ) {
				continue; // Will add after title.
			}
			if ( 'taxonomy-bnb_amenity' === $key ) {
				continue; // Will add after room type.
			}
			$new_columns[ $key ] = $value;
			if ( 'title' === $key ) {
				$new_columns['building']  = __( 'Building', 'wp-bnb' );
				$new_columns['room_number'] = __( 'Room #', 'wp-bnb' );
				$new_columns['taxonomy-bnb_room_type'] = __( 'Room Type', 'wp-bnb' );
				$new_columns['capacity']  = __( 'Capacity', 'wp-bnb' );
				$new_columns['status']    = __( 'Status', 'wp-bnb' );
			}
		}
		return $new_columns;
	}

	/**
	 * Render custom column content.
	 *
	 * @param string $column  Column name.
	 * @param int    $post_id Post ID.
	 * @return void
	 */
	public static function render_column( string $column, int $post_id ): void {
		switch ( $column ) {
			case 'building':
				$building_id = get_post_meta( $post_id, self::META_PREFIX . 'building_id', true );
				if ( $building_id ) {
					$building = get_post( $building_id );
					if ( $building ) {
						printf(
							'<a href="%s">%s</a>',
							esc_url( get_edit_post_link( $building_id ) ),
							esc_html( $building->post_title )
						);
					} else {
						echo '—';
					}
				} else {
					echo '—';
				}
				break;

			case 'room_number':
				$room_number = get_post_meta( $post_id, self::META_PREFIX . 'room_number', true );
				echo esc_html( $room_number ?: '—' );
				break;

			case 'capacity':
				$capacity = get_post_meta( $post_id, self::META_PREFIX . 'capacity', true );
				if ( $capacity ) {
					printf(
						'<span class="dashicons dashicons-groups"></span> %s',
						esc_html( $capacity )
					);
				} else {
					echo '—';
				}
				break;

			case 'status':
				$status   = get_post_meta( $post_id, self::META_PREFIX . 'status', true ) ?: 'available';
				$statuses = self::get_room_statuses();
				$colors   = self::get_status_colors();
				?>
				<span class="bnb-status-badge" style="background-color: <?php echo esc_attr( $colors[ $status ] ?? '#ccc' ); ?>">
					<?php echo esc_html( $statuses[ $status ] ?? $status ); ?>
				</span>
				<?php
				break;
		}
	}

	/**
	 * Add sortable columns.
	 *
	 * @param array $columns Existing sortable columns.
	 * @return array
	 */
	public static function sortable_columns( array $columns ): array {
		$columns['building']    = 'building';
		$columns['room_number'] = 'room_number';
		$columns['capacity']    = 'capacity';
		return $columns;
	}

	/**
	 * Add building filter dropdown to admin list.
	 *
	 * @param string $post_type Current post type.
	 * @return void
	 */
	public static function add_building_filter( string $post_type ): void {
		if ( self::POST_TYPE !== $post_type ) {
			return;
		}

		$buildings = get_posts(
			array(
				'post_type'      => Building::POST_TYPE,
				'post_status'    => 'publish',
				'posts_per_page' => -1,
				'orderby'        => 'title',
				'order'          => 'ASC',
			)
		);

		if ( empty( $buildings ) ) {
			return;
		}

		// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Filter display only.
		$selected = isset( $_GET['building_id'] ) ? absint( $_GET['building_id'] ) : 0;
		?>
		<select name="building_id">
			<option value=""><?php esc_html_e( 'All Buildings', 'wp-bnb' ); ?></option>
			<?php foreach ( $buildings as $building ) : ?>
				<option value="<?php echo esc_attr( $building->ID ); ?>" <?php selected( $selected, $building->ID ); ?>>
					<?php echo esc_html( $building->post_title ); ?>
				</option>
			<?php endforeach; ?>
		</select>
		<?php
	}

	/**
	 * Filter rooms by building in admin list.
	 *
	 * @param \WP_Query $query Current query.
	 * @return void
	 */
	public static function filter_by_building( \WP_Query $query ): void {
		if ( ! is_admin() || ! $query->is_main_query() ) {
			return;
		}

		if ( self::POST_TYPE !== $query->get( 'post_type' ) ) {
			return;
		}

		// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Filter query only.
		if ( ! empty( $_GET['building_id'] ) ) {
			$query->set(
				'meta_query',
				array(
					array(
						'key'   => self::META_PREFIX . 'building_id',
						'value' => absint( $_GET['building_id'] ),
					),
				)
			);
		}
	}

	/**
	 * Change title placeholder.
	 *
	 * @param string   $placeholder Default placeholder.
	 * @param \WP_Post $post        Current post.
	 * @return string
	 */
	public static function change_title_placeholder( string $placeholder, \WP_Post $post ): string {
		if ( self::POST_TYPE === $post->post_type ) {
			return __( 'Enter room name', 'wp-bnb' );
		}
		return $placeholder;
	}

	/**
	 * Get room status options.
	 *
	 * @return array<string, string>
	 */
	public static function get_room_statuses(): array {
		return array(
			'available'   => __( 'Available', 'wp-bnb' ),
			'occupied'    => __( 'Occupied', 'wp-bnb' ),
			'maintenance' => __( 'Maintenance', 'wp-bnb' ),
			'blocked'     => __( 'Blocked', 'wp-bnb' ),
		);
	}

	/**
	 * Get status color codes.
	 *
	 * @return array<string, string>
	 */
	public static function get_status_colors(): array {
		return array(
			'available'   => '#00a32a',
			'occupied'    => '#72aee6',
			'maintenance' => '#dba617',
			'blocked'     => '#d63638',
		);
	}

	/**
	 * Get building for a room.
	 *
	 * @param int $room_id Room post ID.
	 * @return \WP_Post|null
	 */
	public static function get_building( int $room_id ): ?\WP_Post {
		$building_id = get_post_meta( $room_id, self::META_PREFIX . 'building_id', true );
		if ( ! $building_id ) {
			return null;
		}
		return get_post( $building_id );
	}

	/**
	 * Get rooms for a building.
	 *
	 * @param int $building_id Building post ID.
	 * @return array<\WP_Post>
	 */
	public static function get_rooms_for_building( int $building_id ): array {
		return get_posts(
			array(
				'post_type'      => self::POST_TYPE,
				'post_status'    => 'publish',
				'posts_per_page' => -1,
				'meta_query'     => array(
					array(
						'key'   => self::META_PREFIX . 'building_id',
						'value' => $building_id,
					),
				),
				'orderby'        => 'meta_value',
				'meta_key'       => self::META_PREFIX . 'room_number',
				'order'          => 'ASC',
			)
		);
	}
}