<?php

namespace RoosterLMS\UI;

defined( 'ABSPATH' ) || exit;

final class TableRequest {

	private static ?array $simulated = null;

	public static function simulate( array $get, string $path, array $post, callable $render ): mixed {
		$previous        = self::$simulated;
		self::$simulated = array(
			'get'  => $get,
			'path' => $path,
			'post' => $post,
		);
		try {
			return $render();
		} finally {
			self::$simulated = $previous;
		}
	}

	public static function simulation(): ?array {
		return self::$simulated;
	}

	public static function get( string $key ): mixed {
		if ( null !== self::$simulated ) {
			$value = self::$simulated['get'][ $key ] ?? null;
			return null === $value ? null : map_deep( $value, 'sanitize_text_field' );
		}
		return is_admin() && ! wp_doing_ajax() ? self::admin_get( $key ) : self::public_get( $key );
	}

	private static function admin_get( string $key ): mixed {
		if ( ! isset( $_GET['rooster_view'] ) || ! wp_verify_nonce( sanitize_key( wp_unslash( $_GET['rooster_view'] ) ), 'rooster_admin_view' ) ) {
			return null;
		}
		return isset( $_GET[ $key ] ) ? map_deep( wp_unslash( $_GET[ $key ] ), 'sanitize_text_field' ) : null;
	}

	private static function public_get( string $key ): mixed {
		return isset( $_GET[ $key ] ) ? map_deep( wp_unslash( $_GET[ $key ] ), 'sanitize_text_field' ) : null; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- a public page's read-only argument (see the docblock).
	}

	public static function args( TableDefinition $d ): array {
		$names = TableQuery::arg_names( $d );
		$keys  = array_merge( array( $names['page'], $names['per_page'], $names['orderby'], $names['order'], $names['after'] ), array_values( $names['filters'] ) );
		if ( 'post' !== $d->search_transport() ) {
			$keys[] = $names['search'];
		}
		$out = array();
		foreach ( $keys as $key ) {
			$value = self::get( $key );
			if ( is_scalar( $value ) || is_array( $value ) ) {
				$out[ $key ] = $value;
			}
		}
		return $out;
	}

	public static function posted_search( TableDefinition $d ): array {
		$name = TableQuery::arg_names( $d )['search'];
		if ( null !== self::$simulated ) {
			$term = self::$simulated['post'][ $name ] ?? '';
			return 'post' === $d->search_transport() && is_string( $term ) && '' !== $term ? array( $name => sanitize_text_field( $term ) ) : array();
		}
		if ( 'post' !== $d->search_transport() || ! \RoosterLMS\Admin\Request::posted_nonce_valid( TableQuery::SEARCH_NONCE, TableQuery::SEARCH_ACTION ) ) {
			return array();
		}
		$term = \RoosterLMS\Admin\Request::posted_value( $name );
		return is_string( $term ) ? array( $name => $term ) : array();
	}
}