<?php
/**
 * The admin page.
 *
 * @package MadeCost
 */

namespace MadeCost;

defined( 'ABSPATH' ) || exit;

/**
 * Adds WooCommerce > MadeCost and loads the page script there (and nowhere else).
 */
final class Admin {

	const SLUG = 'madecost';

	/**
	 * Hook suffix of the page, set when the menu is added.
	 *
	 * @var string|false
	 */
	private $hook_suffix = false;

	/**
	 * Hook into the admin.
	 */
	public function register(): void {
		add_action( 'admin_menu', array( $this, 'add_menu' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue' ) );
		add_filter( 'plugin_action_links_' . plugin_basename( MADECOST_FILE ), array( $this, 'action_links' ) );
	}

	/**
	 * Add the page under the WooCommerce menu.
	 */
	public function add_menu(): void {
		$this->hook_suffix = add_submenu_page(
			'woocommerce',
			__( 'MadeCost', 'madecost' ),
			__( 'MadeCost', 'madecost' ),
			'manage_woocommerce',
			self::SLUG,
			array( $this, 'render' )
		);
	}

	/**
	 * Link on the Plugins screen.
	 *
	 * @param string[] $links Existing links.
	 * @return string[]
	 */
	public function action_links( array $links ): array {
		$url = admin_url( 'admin.php?page=' . self::SLUG );
		array_unshift( $links, '<a href="' . esc_url( $url ) . '">' . esc_html__( 'Open MadeCost', 'madecost' ) . '</a>' );
		return $links;
	}

	/**
	 * The page: a mount point, React does the rest.
	 */
	public function render(): void {
		echo '<div class="wrap"><div id="madecost-root"></div></div>';
	}

	/**
	 * Data handed to the script.
	 *
	 * @return array
	 */
	private function boot_data(): array {
		return array(
			'version'       => MADECOST_VERSION,
			'currency'      => function_exists( 'get_woocommerce_currency' ) ? get_woocommerce_currency() : 'USD',
			'locale'        => str_replace( '_', '-', determine_locale() ),
			'restNamespace' => Rest::API_NAMESPACE,
			/**
			 * Whether an add-on that unlocks more features is active. The add-on returns true.
			 */
			'proActive'     => (bool) apply_filters( 'madecost_pro_active', false ),
		);
	}

	/**
	 * Load the script and style on our page only.
	 *
	 * @param string $hook Current admin page hook suffix.
	 */
	public function enqueue( $hook ): void {
		if ( ! $this->hook_suffix || $hook !== $this->hook_suffix ) {
			return;
		}
		$asset_file = MADECOST_DIR . 'build/index.asset.php';
		if ( ! is_readable( $asset_file ) ) {
			add_action(
				'admin_notices',
				static function () {
					echo '<div class="notice notice-error"><p>' . esc_html__( 'MadeCost: the page script is missing. Reinstall the plugin.', 'madecost' ) . '</p></div>';
				}
			);
			return;
		}
		$asset = include $asset_file;

		wp_enqueue_script( 'madecost-admin', MADECOST_URL . 'build/index.js', $asset['dependencies'], $asset['version'], true );
		wp_set_script_translations( 'madecost-admin', 'madecost' );
		wp_add_inline_script( 'madecost-admin', 'window.madecostBoot = ' . wp_json_encode( $this->boot_data() ) . ';', 'before' );

		wp_enqueue_style( 'madecost-admin', MADECOST_URL . 'build/style-index.css', array( 'wp-components' ), $asset['version'] );
	}
}