<?php

declare( strict_types=1 );

namespace Senti\Roadmap;

use Senti\Shared\WordPress\Identifiers;
use WP_Post;
use WP_Query;
use SentiVendor\WPDesk\Init\Binding\Hookable;

/**
 * Handles WordPress administration interface for roadmap entries.
 */
final class RoadmapAdmin implements Hookable {

	public function __construct(
		private readonly RoadmapService $roadmap
	) {
	}

	public function hooks(): void {
		add_filter( 'manage_senti_roadmap_posts_columns', [ $this, 'columns' ] );
		add_action( 'manage_senti_roadmap_posts_custom_column', [ $this, 'render_column' ], 10, 2 );
		add_filter( 'manage_edit-senti_roadmap_sortable_columns', [ $this, 'sortable_columns' ] );
		add_action( 'pre_get_posts', [ $this, 'sort_collection' ] );
		add_action( 'add_meta_boxes_senti_roadmap', [ $this, 'add_meta_boxes' ] );
		add_action( 'save_post_senti_roadmap', [ $this, 'save' ], 10, 2 );
	}

	/**
	 * @internal
	 * @param array<string, string> $columns
	 * @return array<string, string>
	 */
	public function columns( array $columns ): array {
		$columns['senti_roadmap_stage']    = __( 'Stage', 'senti-feedback' );
		$columns['senti_roadmap_position'] = __( 'Position', 'senti-feedback' );

		return $columns;
	}

	/**
	 * @internal
	 */
	public function render_column( string $column, int $post_id ): void {
		if ( $column === 'senti_roadmap_stage' ) {
			$terms = wp_get_object_terms( $post_id, Identifiers::TAXONOMY_ROADMAP_STAGE, [ 'fields' => 'names' ] );
			echo esc_html( is_wp_error( $terms ) ? '' : implode( ', ', $terms ) );
		}

		if ( $column === 'senti_roadmap_position' ) {
			echo esc_html( (string) get_post_meta( $post_id, Identifiers::META_ROADMAP_POSITION, true ) );
		}
	}

	/**
	 * @internal
	 * @param array<string, string> $columns
	 * @return array<string, string>
	 */
	public function sortable_columns( array $columns ): array {
		$columns['senti_roadmap_position'] = 'senti_roadmap_position';

		return $columns;
	}

	/**
	 * @internal
	 */
	public function sort_collection( WP_Query $query ): void {
		if ( ! is_admin() || ! $query->is_main_query() || $query->get( 'post_type' ) !== Identifiers::POST_TYPE_ROADMAP || $query->get( 'orderby' ) !== 'senti_roadmap_position' ) {
			return;
		}

		$query->set( 'meta_key', Identifiers::META_ROADMAP_POSITION );
		$query->set( 'orderby', 'meta_value_num' );
	}

	/**
	 * @internal
	 */
	public function add_meta_boxes(): void {
		remove_meta_box( 'tagsdiv-' . Identifiers::TAXONOMY_ROADMAP_STAGE, Identifiers::POST_TYPE_ROADMAP, 'side' );
		add_meta_box( 'senti-roadmap-order', __( 'Roadmap placement', 'senti-feedback' ), [ $this, 'render_placement' ], Identifiers::POST_TYPE_ROADMAP, 'side' );
		add_meta_box( 'senti-roadmap-feedback', __( 'Linked feedback', 'senti-feedback' ), [ $this, 'render_feedback' ], Identifiers::POST_TYPE_ROADMAP, 'side' );
	}

	/**
	 * @internal
	 */
	public function render_placement( WP_Post $post ): void {
		$stages        = get_terms(
			[
				'taxonomy'   => Identifiers::TAXONOMY_ROADMAP_STAGE,
				'hide_empty' => false,
				'meta_key'   => StageProvisioner::position_meta_key(), // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- The small administrator-defined stage collection is ordered by explicit position.
				'orderby'    => 'meta_value_num',
				'order'      => 'ASC',
			]
		);
		$current_terms = wp_get_object_terms( $post->ID, Identifiers::TAXONOMY_ROADMAP_STAGE, [ 'fields' => 'ids' ] );
		$current_stage = ( ! is_wp_error( $current_terms ) && ! empty( $current_terms ) ) ? (int) $current_terms[0] : 0;
		$position      = (int) get_post_meta( $post->ID, Identifiers::META_ROADMAP_POSITION, true );

		include dirname( __DIR__, 2 ) . '/templates/admin/metaboxes/roadmap-placement.php';
	}

	/**
	 * @internal
	 */
	public function render_feedback( WP_Post $post ): void {
		$selected = $this->roadmap->feedback_ids( $post->ID );
		$feedback = get_posts(
			[
				'post_type'   => Identifiers::POST_TYPE_FEEDBACK,
				'post_status' => [ 'publish', 'pending', 'draft' ],
				'numberposts' => 100,
				'orderby'     => 'title',
				'order'       => 'ASC',
			]
		);
		$shown    = wp_list_pluck( $feedback, 'ID' );
		foreach ( array_diff( $selected, array_map( 'intval', $shown ) ) as $missing_id ) {
			$missing = get_post( $missing_id );
			if ( $missing instanceof WP_Post ) {
				$feedback[] = $missing;
			}
		}

		include dirname( __DIR__, 2 ) . '/templates/admin/metaboxes/roadmap-feedback.php';
	}

	/**
	 * @internal
	 */
	public function save( int $post_id, WP_Post $post ): void {
		$nonce = isset( $_POST['senti_roadmap_nonce'] ) && is_string( $_POST['senti_roadmap_nonce'] ) ? sanitize_text_field( wp_unslash( $_POST['senti_roadmap_nonce'] ) ) : '';
		if ( $post->post_type !== Identifiers::POST_TYPE_ROADMAP || ! wp_verify_nonce( $nonce, 'senti_roadmap_save' ) || ! current_user_can( 'edit_post', $post_id ) || wp_is_post_revision( $post_id ) || wp_is_post_autosave( $post_id ) ) {
			return;
		}

		$stage    = isset( $_POST['senti_roadmap_stage'] ) ? absint( $_POST['senti_roadmap_stage'] ) : 0;
		$position = isset( $_POST['senti_roadmap_position'] ) ? absint( $_POST['senti_roadmap_position'] ) : 0;
		if ( $stage === 0 ) {
			return;
		}

		try {
			$this->roadmap->set_stage_and_position( $post_id, $stage, $position );
			$feedback = isset( $_POST['senti_roadmap_feedback'] ) && is_array( $_POST['senti_roadmap_feedback'] ) ? array_map( 'absint', wp_unslash( $_POST['senti_roadmap_feedback'] ) ) : [];
			$this->roadmap->replace_feedback( $post_id, $feedback );
		} catch ( RoadmapException ) {
			return;
		}
	}
}