<?php
/**
 * Admin menu registration and dashboard rendering.
 *
 * @package BreznFlow
 * @since   1.0.0
 */

namespace BreznFlow\Admin;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Registers the BreznFlow admin menu pages and handles delete actions.
 *
 * @since 1.0.0
 */
class AdminMenu {
	/**
	 * Registers admin menu hooks and loads the themes sub-page.
	 *
	 * @since  1.0.0
	 * @return void
	 */
	public function register(): void {
		add_action( 'admin_menu', array( $this, 'add_menus' ) );
		add_action( 'admin_init', array( $this, 'handle_delete_action' ) );

		require_once BREZNFLOW_DIR . 'includes/Admin/ThemesPage.php';
		( new ThemesPage() )->register();
	}

	/**
	 * Adds the top-level menu and submenu pages to wp-admin.
	 *
	 * @since  1.0.0
	 * @return void
	 */
	public function add_menus(): void {
		add_menu_page(
			__( 'BreznFlow', 'breznflow' ),
			__( 'BreznFlow', 'breznflow' ),
			'edit_posts',
			'breznflow',
			array( $this, 'render_dashboard' ),
			'dashicons-networking',
			30
		);

		add_submenu_page(
			'breznflow',
			__( 'All Workflows', 'breznflow' ),
			__( 'All Workflows', 'breznflow' ),
			'edit_posts',
			'breznflow',
			array( $this, 'render_dashboard' )
		);

		add_submenu_page(
			'breznflow',
			__( 'Add Workflow', 'breznflow' ),
			__( 'Add Workflow', 'breznflow' ),
			'edit_posts',
			'breznflow-add',
			array( $this, 'render_wizard' )
		);

		add_submenu_page(
			'breznflow',
			__( 'Themes', 'breznflow' ),
			__( 'Themes', 'breznflow' ),
			'manage_options',
			'breznflow-themes',
			array( $this, 'render_themes' )
		);

		add_submenu_page(
			'breznflow',
			__( 'Settings', 'breznflow' ),
			__( 'Settings', 'breznflow' ),
			'manage_options',
			'breznflow-settings',
			array( $this, 'render_settings' )
		);
	}

	/**
	 * Handles single and bulk delete actions early (admin_init),
	 * before any output is sent — so wp_safe_redirect() works correctly.
	 */
	public function handle_delete_action(): void {
		// Only act on our page.
		if ( ! isset( $_GET['page'] ) || 'breznflow' !== $_GET['page'] ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
			return;
		}

		$action = isset( $_GET['action'] ) ? sanitize_key( $_GET['action'] ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended

		// ── Single-row delete ─────────────────────────────────────────────────
		if ( 'delete' === $action && isset( $_GET['post'] ) && ! isset( $_GET['workflow'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
			$post_id = (int) sanitize_text_field( wp_unslash( $_GET['post'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
			if (
				$post_id > 0
				&& check_admin_referer( 'breznflow_delete_' . $post_id )
				&& current_user_can( 'delete_post', $post_id )
			) {
				wp_trash_post( $post_id );
				wp_safe_redirect(
					add_query_arg(
						array(
							'page'    => 'breznflow',
							'deleted' => '1',
						),
						admin_url( 'admin.php' )
					)
				);
				exit;
			}
		}

		// ── Bulk delete ───────────────────────────────────────────────────────
		// WP_List_Table sends action2 when the bottom select is used.
		$bulk = $action;
		if ( 'delete' !== $bulk && isset( $_GET['action2'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
			$bulk = sanitize_key( $_GET['action2'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
		}

		if ( 'delete' === $bulk && isset( $_GET['workflow'] ) && is_array( $_GET['workflow'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
			check_admin_referer( 'bulk-workflows' );
			$count         = 0;
			$raw_workflows = array_map( 'absint', wp_unslash( $_GET['workflow'] ) );
			foreach ( $raw_workflows as $pid ) {
				if ( $pid > 0 && current_user_can( 'delete_post', $pid ) ) {
					wp_trash_post( $pid );
					++$count;
				}
			}
			wp_safe_redirect(
				add_query_arg(
					array(
						'page'    => 'breznflow',
						'deleted' => $count,
					),
					admin_url( 'admin.php' )
				)
			);
			exit;
		}
	}

	/**
	 * Renders the workflow list dashboard page.
	 *
	 * @since  1.0.0
	 * @return void
	 */
	public function render_dashboard(): void {
		require_once BREZNFLOW_DIR . 'includes/Admin/WorkflowListTable.php';
		$table = new WorkflowListTable();
		$table->prepare_items();
		require BREZNFLOW_DIR . 'includes/Admin/views/list.php';
	}

	/**
	 * Renders the add-workflow wizard page for the current step.
	 *
	 * @since  1.0.0
	 * @return void
	 */
	public function render_wizard(): void {
		$step = isset( $_GET['step'] ) ? (int) $_GET['step'] : 1; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
		switch ( $step ) {
			case 2:
				require BREZNFLOW_DIR . 'includes/Admin/views/wizard-step-2.php';
				break;
			case 3:
				require BREZNFLOW_DIR . 'includes/Admin/views/wizard-step-3.php';
				break;
			default:
				require BREZNFLOW_DIR . 'includes/Admin/views/wizard-step-1.php';
				break;
		}
	}

	/**
	 * Renders the themes management page.
	 *
	 * @since  1.0.0
	 * @return void
	 */
	public function render_themes(): void {
		require_once BREZNFLOW_DIR . 'includes/Admin/ThemesPage.php';
		( new ThemesPage() )->render();
	}

	/**
	 * Renders the plugin settings page.
	 *
	 * @since  1.0.0
	 * @return void
	 */
	public function render_settings(): void {
		require BREZNFLOW_DIR . 'includes/Admin/views/settings.php';
	}
}