<?php
/**
 * Branded top-level admin menu + subpages.
 *
 * @package AccordionFaq
 */

namespace AccordionFaq\Admin;

defined( 'ABSPATH' ) || exit;

/**
 * Class Menu
 */
class Menu {

	const SLUG = 'accordion-faq';

	/**
	 * Page renderers.
	 *
	 * @var array
	 */
	private $pages;

	/**
	 * Register hooks.
	 *
	 * @return void
	 */
	public function register() {
		$this->pages = array(
			'dashboard' => new Dashboard(),
			'analytics' => new AnalyticsPage(),
			'tools'     => new Tools(),
			'settings'  => new Settings(),
		);
		// Settings needs its own admin_init + action links regardless of menu.
		$this->pages['settings']->register_setting_only();

		add_action( 'admin_menu', array( $this, 'add_menu' ) );
		add_filter( 'parent_file', array( $this, 'highlight_parent' ) );
		add_filter( 'submenu_file', array( $this, 'highlight_submenu' ) );
	}

	/**
	 * Keep the Accordion FAQ menu open on FAQ post/taxonomy screens.
	 *
	 * @param string $parent_file Parent file.
	 * @return string
	 */
	public function highlight_parent( $parent_file ) {
		$screen = function_exists( 'get_current_screen' ) ? get_current_screen() : null;
		if ( $screen && \AccordionFaq\Setup\PostType::POST_TYPE === $screen->post_type ) {
			return self::SLUG;
		}
		return $parent_file;
	}

	/**
	 * Highlight the correct submenu item on FAQ screens.
	 *
	 * @param string|null $submenu_file Submenu file.
	 * @return string|null
	 */
	public function highlight_submenu( $submenu_file ) {
		$screen = function_exists( 'get_current_screen' ) ? get_current_screen() : null;
		if ( ! $screen || \AccordionFaq\Setup\PostType::POST_TYPE !== $screen->post_type ) {
			return $submenu_file;
		}
		if ( \AccordionFaq\Setup\Taxonomy::TAXONOMY === $screen->taxonomy ) {
			return 'edit-tags.php?taxonomy=' . \AccordionFaq\Setup\Taxonomy::TAXONOMY . '&post_type=' . \AccordionFaq\Setup\PostType::POST_TYPE;
		}
		if ( 'post' === $screen->base && 'add' === $screen->action ) {
			return 'post-new.php?post_type=' . \AccordionFaq\Setup\PostType::POST_TYPE;
		}
		return 'edit.php?post_type=' . \AccordionFaq\Setup\PostType::POST_TYPE;
	}

	/**
	 * Build the menu.
	 *
	 * @return void
	 */
	public function add_menu() {
		add_menu_page(
			__( 'Accordion FAQ', 'accordion-faq-plugin' ),
			__( 'Accordion FAQ', 'accordion-faq-plugin' ),
			'edit_posts',
			self::SLUG,
			array( $this->pages['dashboard'], 'render' ),
			'dashicons-editor-help',
			25
		);

		add_submenu_page(
			self::SLUG,
			__( 'Dashboard', 'accordion-faq-plugin' ),
			__( 'Dashboard', 'accordion-faq-plugin' ),
			'edit_posts',
			self::SLUG,
			array( $this->pages['dashboard'], 'render' )
		);

		// All FAQs + Add New + Categories (native screens, surfaced in our menu).
		add_submenu_page(
			self::SLUG,
			__( 'All FAQs', 'accordion-faq-plugin' ),
			__( 'All FAQs', 'accordion-faq-plugin' ),
			'edit_posts',
			'edit.php?post_type=' . \AccordionFaq\Setup\PostType::POST_TYPE
		);

		add_submenu_page(
			self::SLUG,
			__( 'Add New FAQ', 'accordion-faq-plugin' ),
			__( 'Add New', 'accordion-faq-plugin' ),
			'edit_posts',
			'post-new.php?post_type=' . \AccordionFaq\Setup\PostType::POST_TYPE
		);

		add_submenu_page(
			self::SLUG,
			__( 'FAQ Categories', 'accordion-faq-plugin' ),
			__( 'Categories', 'accordion-faq-plugin' ),
			'manage_categories',
			'edit-tags.php?taxonomy=' . \AccordionFaq\Setup\Taxonomy::TAXONOMY . '&post_type=' . \AccordionFaq\Setup\PostType::POST_TYPE
		);

		add_submenu_page(
			self::SLUG,
			__( 'Analytics', 'accordion-faq-plugin' ),
			__( 'Analytics', 'accordion-faq-plugin' ),
			'edit_posts',
			self::SLUG . '-analytics',
			array( $this->pages['analytics'], 'render' )
		);

		add_submenu_page(
			self::SLUG,
			__( 'AI & Tools', 'accordion-faq-plugin' ),
			__( 'AI & Tools', 'accordion-faq-plugin' ),
			'manage_options',
			self::SLUG . '-tools',
			array( $this->pages['tools'], 'render' )
		);

		add_submenu_page(
			self::SLUG,
			__( 'Settings', 'accordion-faq-plugin' ),
			__( 'Settings', 'accordion-faq-plugin' ),
			'manage_options',
			self::SLUG . '-settings',
			array( $this->pages['settings'], 'render' )
		);
	}
}