<?php

namespace RoosterLMS\UI;

use RoosterLMS\Core\Settings;
use RoosterLMS\I18n\Providers;
use RoosterLMS\Persons\PersonsModule;
use RoosterLMS\Routing\CertificateRoute;

defined( 'ABSPATH' ) || exit;

final class Theme {

	public const FILTER = 'rooster_lms_theme_contracts';

	private const HEADER = 'Rooster Contracts';

	private static ?array $contracts = null;

	public static function contracts(): array {
		if ( null === self::$contracts ) {
			$found = array();
			foreach ( array_unique( array( get_stylesheet_directory(), get_template_directory() ) ) as $dir ) {
				$file = rtrim( (string) $dir, '/\\' ) . '/style.css';
				if ( ! is_readable( $file ) ) {
					continue;
				}
				$data  = get_file_data( $file, array( 'contracts' => self::HEADER ) );
				$parts = preg_split( '/[\s,]+/', (string) ( $data['contracts'] ?? '' ) );
				foreach ( is_array( $parts ) ? $parts : array() as $one ) {
					if ( 1 === preg_match( '/^C\d+@\d+$/', $one ) ) {
						$found[] = $one;
					}
				}
			}
			$filtered        = apply_filters( 'rooster_lms_theme_contracts', array_values( array_unique( $found ) ) );
			self::$contracts = is_array( $filtered ) ? array_values( array_filter( array_map( 'strval', $filtered ) ) ) : array();
		}
		return self::$contracts;
	}

	public static function version( string $contract ): int {
		$max = 0;
		foreach ( self::contracts() as $one ) {
			if ( str_starts_with( $one, $contract . '@' ) ) {
				$max = max( $max, (int) substr( $one, strlen( $contract ) + 1 ) );
			}
		}
		return $max;
	}

	public static function authority(): string {
		$authority = function_exists( 'rooster_design_authority' ) ? (string) rooster_design_authority() : 'plugins';
		$authority = apply_filters( 'rooster_lms_design_authority', $authority );
		return 'theme' === $authority ? 'theme' : 'plugins';
	}

	public static function editor_flag(): void {
		wp_add_inline_script( 'wp-blocks', 'window.roosterLmsDesign=' . wp_json_encode( array( 'themed' => self::designs() ) ) . ';', 'before' );
	}

	public static function designs(): bool {
		return 'theme' === self::authority() && self::declares( 'C2' );
	}

	public static function declares( string $contract ): bool {
		foreach ( self::contracts() as $one ) {
			if ( $one === $contract || ( ! str_contains( $contract, '@' ) && str_starts_with( $one, $contract . '@' ) ) ) {
				return true;
			}
		}
		return false;
	}

	public static function academy_page( $academy, $queried = null ): bool {
		if ( $academy || '' !== (string) get_query_var( CertificateRoute::VAR ) ) {
			return true;
		}
		if ( ! $queried instanceof \WP_Post ) {
			return false;
		}
		if ( PersonsModule::POST_TYPE === $queried->post_type ) {
			return true;
		}
		if ( 'page' !== $queried->post_type ) {
			return false;
		}
		foreach ( array( 'account_page_id', 'portal_page_id', 'certificate_verify_page_id', 'registration_page_id' ) as $setting ) {
			$page = (int) Settings::get( $setting );
			if ( $page > 0 && ( $page === (int) $queried->ID || in_array( (int) $queried->ID, array_map( 'intval', Providers::current()->post_translations( $page ) ), true ) ) ) {
				return true;
			}
		}
		return false;
	}

	public static function reset(): void {
		self::$contracts = null;
	}
}