<?php

declare( strict_types=1 );

namespace AcezSeo\Admin;

use AcezSeo\Admin\Ui\FormControls;
use AcezSeo\Ai\AiProviderRegistry;
use AcezSeo\Data\AiSettingsRepositoryInterface;
use AcezSeo\Data\ArchiveSettingsRepositoryInterface;
use AcezSeo\Data\FeaturesRepositoryInterface;
use AcezSeo\Data\GlobalSettingsRepositoryInterface;
use AcezSeo\Data\IntegrationsRepositoryInterface;
use AcezSeo\Data\LicenseRepositoryInterface;
use AcezSeo\Data\OnboardingRepositoryInterface;
use AcezSeo\Data\RobotsTxtRepositoryInterface;
use AcezSeo\Data\SettingsRepositoryInterface;
use AcezSeo\Help\HelpContent;
use AcezSeo\Import\ImporterRegistry;
use AcezSeo\Location\LocationRulesRepositoryInterface;
use AcezSeo\Support\Capabilities;
use AcezSeo\Support\KsesTags;

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

/**
 * "Acez SEO" settings screen — after M38 a thin coordinator: it registers
 * the menu page, renders the tab nav, enqueues the assets shared by every
 * tab, and dispatches render/enqueue/save to the Tabs\* classes. Each tab
 * owns its own screen, conditional assets and form keys; the constructor
 * here is the single composition point wiring repositories to tabs.
 */
final class SettingsPage
{
	/**
	 * Tab slug → module color identity (visual only — see admin-settings.css
	 * `.acez-seo-wrap--mod-*`). Tabs not listed keep the default blue accent.
	 *
	 * @var array<string, string>
	 */
	private const TAB_MODULES = array(
		'ai'           => 'ai',
		'integrations' => 'analytics',
		'license'      => 'license',
	);

	private FormControls $ui;

	/**
	 * slug => tab, in the NAV ORDER (a user decision — Dashboard → Kreator →
	 * Schema → Treści → robots.txt → llms.txt → Integracje → Custom Code →
	 * Narzędzia → AI Providers → Ustawienia → Licencja last; new tabs go
	 * before AI). llms.txt got its OWN tab in M57 (previously a card at the
	 * bottom of robots.txt, M38) — placed right after robots.txt, its closest
	 * cousin in the "what bots may do" family. Kreator (M41, first increment)
	 * sits right after Dashboard — a permanent tab, not the originally-planned
	 * hidden page + one-time redirect (user decision 2026-07-06).
	 *
	 * @var array<string, Tabs\TabInterface>
	 */
	private array $tabs = array();
	private string $hook_suffix = '';

	public function __construct(
		SettingsRepositoryInterface $post_type_settings,
		GlobalSettingsRepositoryInterface $global_settings,
		LocationRulesRepositoryInterface $location_rules,
		ArchiveSettingsRepositoryInterface $archive_settings,
		RobotsTxtRepositoryInterface $robots_txt,
		AiSettingsRepositoryInterface $ai_settings,
		AiProviderRegistry $ai_providers,
		IntegrationsRepositoryInterface $integrations,
		ImporterRegistry $importers,
		FeaturesRepositoryInterface $features,
		LicenseRepositoryInterface $license,
		OnboardingRepositoryInterface $onboarding,
		?\AcezSeo\Data\AiBotsRepositoryInterface $ai_bots = null,
		?\AcezSeo\Data\SitemapRepositoryInterface $sitemap = null
	)
	{
		$this->ui = new FormControls();

		$sitemap = $sitemap ?? new \AcezSeo\Data\SitemapRepository();

		$this->tabs = array(
			'dashboard'    => new Tabs\DashboardTab( $this->ui, $features, $ai_settings, $post_type_settings, $global_settings, $robots_txt, $integrations, $onboarding, $ai_bots ),
			'onboarding'   => new Tabs\OnboardingTab( $this->ui, $onboarding, $global_settings, $post_type_settings, $importers, $ai_providers, $ai_settings, $features, $robots_txt, $integrations, $ai_bots ),
			'global'       => new Tabs\SchemaTab( $this->ui, $global_settings ),
			'content'      => new Tabs\ContentTab( $this->ui, $post_type_settings, $archive_settings, $location_rules, $global_settings ),
			'robots'       => new Tabs\RobotsTab( $this->ui, $robots_txt ),
			'llms'         => new Tabs\LlmsTab( $this->ui, $ai_bots, $global_settings, $features ),
			'sitemap'      => new Tabs\SitemapTab( $this->ui, $sitemap ),
			'integrations' => new Tabs\IntegrationsTab( $this->ui, $integrations ),
			'tools'        => new Tabs\ToolsTab( $this->ui, $importers ),
			'ai'           => new Tabs\AiProvidersTab( $this->ui, $ai_providers, $ai_settings ),
			'settings'     => new Tabs\SettingsTab( $this->ui, $global_settings ),
			'license'      => new Tabs\LicenseTab( $this->ui, $license ),
		);
	}

	public function register(): void
	{
		add_action( 'admin_menu', array( $this, 'register_menu' ) );
		add_action( 'admin_post_acez_seo_save_settings', array( $this, 'handle_save' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_assets' ) );
	}

	public function register_menu(): void
	{
		$hook_suffix = add_menu_page(
			__( 'Acez SEO AI', 'acez-seo' ),
			__( 'Acez SEO AI', 'acez-seo' ),
			Capabilities::manage(),
			FormControls::PAGE_SLUG,
			array( $this, 'render' ),
			'data:image/svg+xml;base64,' . base64_encode( $this->ui->menu_icon_svg() )
		);

		$this->hook_suffix = is_string( $hook_suffix ) ? $hook_suffix : '';
	}

	public function enqueue_assets( string $hook ): void
	{
		if ( '' === $this->hook_suffix || $hook !== $this->hook_suffix )
		{
			return;
		}

		wp_enqueue_style(
			'acez-seo-admin-settings',
			ACEZ_SEO_URL . 'assets/css/admin-settings.css',
			array(),
			ACEZ_SEO_VERSION
		);

		wp_enqueue_style(
			'acez-seo-help-popover',
			ACEZ_SEO_URL . 'assets/css/help-popover.css',
			array(),
			ACEZ_SEO_VERSION
		);

		wp_enqueue_script(
			'acez-seo-help-popover',
			ACEZ_SEO_URL . 'assets/js/help-popover.js',
			array(),
			ACEZ_SEO_VERSION,
			true
		);

		wp_localize_script( 'acez-seo-help-popover', 'AcezSeoHelp', HelpContent::all() );
		wp_localize_script( 'acez-seo-help-popover', 'AcezSeoHelpStrings', array( 'watchVideo' => __( 'Watch video ↗', 'acez-seo' ) ) );

		// M44 — collapsible cards (chevron in the card header).
		wp_enqueue_script(
			'acez-seo-card-collapse',
			ACEZ_SEO_URL . 'assets/js/card-collapse.js',
			array(),
			ACEZ_SEO_VERSION,
			true
		);

		wp_localize_script(
			'acez-seo-card-collapse',
			'AcezSeoCards',
			array(
				'collapseAll' => __( 'Collapse all', 'acez-seo' ),
				'expandAll'   => __( 'Expand all', 'acez-seo' ),
			)
		);

		// M46 — confirmation modal for destructive "clear log/counter" actions.
		wp_enqueue_style(
			'acez-seo-confirm-dialog',
			ACEZ_SEO_URL . 'assets/css/confirm-dialog.css',
			array(),
			ACEZ_SEO_VERSION
		);

		wp_enqueue_script(
			'acez-seo-confirm-dialog',
			ACEZ_SEO_URL . 'assets/js/confirm-dialog.js',
			array(),
			ACEZ_SEO_VERSION,
			true
		);

		wp_localize_script(
			'acez-seo-confirm-dialog',
			'AcezSeoConfirm',
			array(
				'title'   => __( 'Confirm', 'acez-seo' ),
				'confirm' => __( 'Confirm', 'acez-seo' ),
				'cancel'  => __( 'Cancel', 'acez-seo' ),
			)
		);

		// Tab-specific assets. Deliberately keyed by the RAW ?tab= value —
		// the ?tab=archives alias enqueues nothing, exactly as before M38.
		$active_tab = isset( $_GET['tab'] ) ? sanitize_key( wp_unslash( $_GET['tab'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- read-only navigation state (which tab's assets to enqueue); nothing is written, so a nonce would be meaningless. Value is sanitize_key()'d and only used as an array key against the registered tab list.

		if ( isset( $this->tabs[ $active_tab ] ) )
		{
			$this->tabs[ $active_tab ]->enqueue();
		}
	}

	public function render(): void
	{
		if ( ! current_user_can( Capabilities::manage() ) )
		{
			wp_die( esc_html__( 'You do not have permission to access this page.', 'acez-seo' ) );
		}

		$active_tab = isset( $_GET['tab'] ) ? sanitize_key( wp_unslash( $_GET['tab'] ) ) : 'dashboard'; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- read-only navigation state (which tab to render); nothing is written. The capability check above already gated this screen, and the value is sanitize_key()'d before being matched against the registered tab list.

		// Backward compat: the former top-level "Archiwa" tab was merged into
		// "Treści" (taxonomy archives are the second sidebar group there) —
		// old ?tab=archives links land on that group instead of a 404-ish
		// dashboard fallback. ContentTab reads the alias from $_GET itself.
		if ( 'archives' === $active_tab )
		{
			$active_tab = 'content';
		}

		if ( ! isset( $this->tabs[ $active_tab ] ) )
		{
			$active_tab = 'dashboard';
		}

		$module_class = isset( self::TAB_MODULES[ $active_tab ] ) ? ' acez-seo-wrap--mod-' . self::TAB_MODULES[ $active_tab ] : '';

		echo '<div class="wrap acez-seo-wrap' . esc_attr( $module_class ) . '">';

		echo '<div class="acez-seo-header">';
		echo '<span class="acez-seo-header__icon">' . wp_kses( $this->ui->menu_icon_svg(), KsesTags::svg() ) . '</span>';
		echo '<h1 style="margin:0;">' . esc_html__( 'Acez SEO AI', 'acez-seo' ) . '</h1>';
		echo '</div>';

		// WP core's own admin.js inserts EVERY admin_notices output (ours and
		// other plugins', e.g. a conflicting SEO plugin's own banner) right
		// after the first `.wrap h1`/`h2` it finds when no `.wp-header-end`
		// marker exists — since our own <h1> sits inside the flex
		// `.acez-seo-header`, notices would land INSIDE that flex row
		// instead of below it. This marker is the documented WP convention
		// to redirect that insertion point; core CSS already hides it.
		echo '<hr class="wp-header-end" />';

		if ( isset( $_GET['updated'] ) && ! isset( $_GET['takeover_error'] ) ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- presence-only check on a redirect flag this plugin sets itself after the nonce-verified save in handle_save(); the value is never read and only a static, translated notice is printed.
		{
			echo '<div class="notice notice-success is-dismissible"><p>' . esc_html__( 'Settings saved.', 'acez-seo' ) . '</p></div>';
		}

		$this->render_tabs( $active_tab );

		$this->tabs[ $active_tab ]->render();

		echo '</div>';
	}

	private function render_tabs( string $active_tab ): void
	{
		echo '<h2 class="nav-tab-wrapper acez-seo-nav-tabs">';

		foreach ( $this->tabs as $tab_slug => $tab )
		{
			$class = $tab_slug === $active_tab ? 'nav-tab nav-tab-active' : 'nav-tab';
			$url   = add_query_arg(
				array(
					'page' => FormControls::PAGE_SLUG,
					'tab'  => $tab_slug,
				),
				admin_url( 'admin.php' )
			);

			printf(
				'<a href="%1$s" class="%2$s">%3$s%4$s</a>',
				esc_url( $url ),
				esc_attr( $class ),
				wp_kses( $this->ui->tab_icon_svg( $tab->icon() ), KsesTags::svg() ),
				esc_html( $tab->label() )
			);
		}

		echo '</h2>';
	}

	public function handle_save(): void
	{
		if ( ! current_user_can( Capabilities::manage() ) )
		{
			wp_die( esc_html__( 'You do not have permission to perform this action.', 'acez-seo' ) );
		}

		check_admin_referer( FormControls::NONCE_ACTION );

		$raw_tab = isset( $_POST['tab'] ) ? sanitize_text_field( wp_unslash( $_POST['tab'] ) ) : 'global';

		$redirect_args = array(
			'page' => FormControls::PAGE_SLUG,
			'tab'  => sanitize_key( $raw_tab ),
		);

		// ContentTab is asked LAST on purpose: it claims bare post-type slugs,
		// and a CPT named like another tab's form key must lose to the named
		// key — the same precedence the original if/elseif chain had.
		$dispatch_order = array_keys( $this->tabs );
		usort( $dispatch_order, static fn( string $a, string $b ): int => ( 'content' === $a ) <=> ( 'content' === $b ) );

		foreach ( $dispatch_order as $slug )
		{
			if ( $this->tabs[ $slug ]->handles_form_key( $raw_tab ) )
			{
				$redirect_args = array_merge( $redirect_args, $this->tabs[ $slug ]->save( $raw_tab ) );
				break;
			}
		}

		$redirect_args['updated'] = '1';

		wp_safe_redirect( add_query_arg( $redirect_args, admin_url( 'admin.php' ) ) );
		exit;
	}
}