<?php
/**
 * Block editor: loads the "Language" document panel (assets/editor.js) and
 * the data it needs as window.blocklingoEditor. Plain wp.* globals, no build step.
 */

declare( strict_types = 1 );

namespace AddBlack\Lang\Editor;

defined( 'ABSPATH' ) || exit;

use AddBlack\Lang\Admin\SettingsPage;
use AddBlack\Lang\Hookable;
use AddBlack\Lang\Hooks;
use AddBlack\Lang\Settings\Defaults;
use AddBlack\Lang\Settings\SettingsRepository;

final class EditorAssets implements Hookable {

	private const DEPENDENCIES = array( 'blocklingo-translate', 'wp-plugins', 'wp-editor', 'wp-rich-text', 'wp-element', 'wp-components', 'wp-data', 'wp-api-fetch', 'wp-blocks', 'wp-notices', 'wp-i18n', 'blocklingo-errors' );

	public function __construct(
		private readonly SettingsRepository $settings,
		private readonly Defaults $defaults
	) {}

	public function register(): void {
		Hooks::action( 'enqueue_block_editor_assets', array( $this, 'enqueue' ) );
	}

	public function enqueue(): void {
		$screen   = function_exists( 'get_current_screen' ) ? get_current_screen() : null;
		$settings = $this->settings->get();
		if ( ! $screen || 'post' !== $screen->base || ! $settings->is_translatable_type( (string) $screen->post_type ) ) {
			return;
		}

		\AddBlack\Lang\Admin\AdminAssets::errors_script();
		wp_register_script( 'blocklingo-translate', BLOCKLINGO_URL . 'assets/translate.js', array(), self::version( 'translate.js' ), true );
		wp_enqueue_script( 'blocklingo-editor', BLOCKLINGO_URL . 'assets/editor.js', self::DEPENDENCIES, self::version( 'editor.js' ), true );
		\AddBlack\Lang\Admin\AdminAssets::translations( 'blocklingo-editor' );
		// Flags as CSS content: the emoji script replaces emoji in text it sees, not in ::before.
		wp_register_style( 'blocklingo-editor', false, array(), BLOCKLINGO_VERSION );
		wp_enqueue_style( 'blocklingo-editor' );
		wp_add_inline_style( 'blocklingo-editor', '.blocklingo-flagged[data-flag]:not([data-flag=""])::before{content:attr(data-flag) " ";}' );
		wp_add_inline_script( 'blocklingo-editor', 'window.blocklingoEditor = ' . wp_json_encode( $this->data() ) . ';', 'before' );
	}

	/** @return array<string, mixed> */
	public function data(): array {
		// Machine translation spends the site's API key: Authors and up (see the translate-strings route).
		$settings  = $this->settings->get();
		$provider  = $settings->provider();
		$providers = $this->defaults->providers();
		$mt_on     = $settings->machine_ready() && isset( $providers[ $provider ] ) && current_user_can( 'publish_posts' );

		$languages = array();
		foreach ( $settings->languages() as $code => $lang ) {
			$languages[] = array(
				'code' => $code,
				'name' => $lang->name,
				'flag' => $lang->flag,
			);
		}

		return array(
			'languages'  => $languages,
			'default'    => $settings->default_code(),
			'postTypes'  => $settings->post_types(),
			'mt'         => $mt_on ? $providers[ $provider ]['label'] : '',
			'seo'        => ! empty( $settings->get( 'seo', array() )['translate'] ),
			'settings'   => SettingsPage::url(),
			// Registered shortcode tags: kept out of machine translation.
			'shortcodes' => \AddBlack\Lang\MachineTranslation\Shortcodes::tags(),
			'skipBlocks' => \AddBlack\Lang\MachineTranslation\BlockTexts::untranslated_blocks(),
		);
	}

	/** Cache-busting version: plugin version plus file time. */
	private static function version( string $file ): string {
		return BLOCKLINGO_VERSION . '.' . (string) filemtime( BLOCKLINGO_DIR . 'assets/' . $file );
	}
}