exit;
}

if ( ! function_exists( 'wp_create_nonce' ) ) {
	require_once ABSPATH . WPINC . '/pluggable.php';
}

class InkByAIGallery {
	const OPT_SET = 'ibag_opt';
	const OPT_EFF = 'ibag_effects';

	public static function sets(): array {
		return get_option( self::OPT_SET, [] );
	}
	public static function effs(): array {
		return get_option( self::OPT_EFF, [
			'hover_effect'          => 'hover-zoom',
			'neon_color'            => '#00ffff',
			'lightbox_effect'       => 'fade',
			'lightbox_on'           => true,
			'share_position_top'    => false,
			'share_position_bottom' => false,
		] );
	}
}

/* -------------------------------------------------------------------------
 *  Uniwersalny URL do pojedynczego zdjęcia  /foto/{ID}
 * ---------------------------------------------------------------------- */
function ibag_photo_url( int $id ): string {
	return home_url( user_trailingslashit( "foto/$id" ) );
}

/* -------------------------------------------------------------------------
 *  REWRITE: /foto/{ID}  ➜  index.php?photo_id={ID}
 * ---------------------------------------------------------------------- */
add_action( 'init', 'ibag_add_rewrite_rules' );
function ibag_add_rewrite_rules() {
	add_rewrite_rule( '^foto/([0-9]+)/?$', 'index.php?photo_id=$matches[1]', 'top' );
}
/* —— SINGLE-IMAGE template —— */
add_filter( 'template_include', 'ibag_template_photo' );
function ibag_template_photo( $template ) {
	if ( get_query_var( 'photo_id' ) ) {
		return plugin_dir_path( __FILE__ ) . 'templates/ibag-photo.php';
	}
	return $template;
}
add_filter( 'query_vars', static function ( $vars ) {
	$vars[] = 'photo_id';
	return $vars;
} ); // ← domknięta klamra

function ibag_rewrite_flush() {
	ibag_add_rewrite_rules();
	flush_rewrite_rules();
}
register_activation_hook( __FILE__, 'ibag_rewrite_flush' );
register_deactivation_hook( __FILE__, 'flush_rewrite_rules' );
/* --------------------------------------------------------------------- */

function ibag_modula_active(): bool {
	return class_exists( 'ModulaLite' ) || class_exists( 'ModulaPro' ) || class_exists( 'Modula' );
}

require_once __DIR__ . '/inkbyaig-compat.php';

/* -------------------------------------------------------------------------
 *  REST API – lista obrazów w galerii
 * ---------------------------------------------------------------------- */
add_action( 'rest_api_init', function () {
	register_rest_route( 'ibag/v1', '/gallery/(?P<id>\\d+)', [
		'methods'             => 'GET',
		'callback'            => 'ibag_rest_gallery',
		'permission_callback' => '__return_true',
	] );
} );
function ibag_rest_gallery( $request ) {
	$gallery_id = $request->get_param( 'id' );
	$g          = ibag_get_gals();

	if ( ! isset( $g[ $gallery_id ] ) ) {
		return new WP_Error( 'not_found', 'Gallery not found', [ 'status' => 404 ] );
	}

	$images = [];
	foreach ( $g[ $gallery_id ]['image_ids'] as $id ) {
		if ( wp_attachment_is_image( $id ) ) {
			$images[] = [
				'id'  => $id,
				'url' => wp_get_attachment_image_url( $id, 'full' ),
				'alt' => get_post_meta( $id, '_wp_attachment_image_alt', true ) ?: get_the_title( $id ),
			];
		}
	}
	return [
		'id'     => $gallery_id,
		'name'   => $g[ $gallery_id ]['name'] ?? '',
		'images' => $images,
	];
}

/* -------------------------------------------------------------------------
 *  AJAX: miniatury pod lightboxem (50 % podobne / 50 % losowe)
 * ---------------------------------------------------------------------- */
add_action( 'wp_ajax_ibag_related',        'ibag_ajax_related' );
add_action( 'wp_ajax_nopriv_ibag_related', 'ibag_ajax_related' );
function ibag_ajax_related() {
	check_ajax_referer( 'ibag_nonce', 'sec' );
	$id      = absint( $_POST['id']    ?? 0 );
	$limit   = absint( $_POST['limit'] ?? 7 );
	$gallery = isset( $_POST['gallery'] ) ? absint( $_POST['gallery'] ) : 0;

	if ( ! $id ) {
		wp_send_json_error();
	}

	/* --- pobierz tagi bieżącego załącznika --- */
	$tags = wp_get_object_terms( $id, 'post_tag', [ 'fields' => 'ids' ] );

	/* --- 50 % podobne (po tagach) --- */
	$similar = $tags ? get_posts( [
		'post_type'      => 'attachment',
		'post_status'    => 'inherit',
		'posts_per_page' => ceil( $limit * 0.5 ),
		'post__not_in'   => [ $id ],
		'orderby'        => 'rand',
		'tax_query'      => [
			[ 'taxonomy' => 'post_tag', 'terms' => $tags ],
		],
	] ) : [];

	/* --- 50 % losowe z bieżącej galerii (fallback: ze wszystkich) --- */
	if ( $gallery && isset( ibag_get_gals()[ $gallery ] ) ) {
		$all_ids = ibag_get_gals()[ $gallery ]['image_ids'];             // tylko z tej galerii
	} else {
		$all_ids = array_unique( array_merge( ...array_column( ibag_get_gals(), 'image_ids' ) ) );
	}

	$all_ids  = array_diff( $all_ids, [ $id ], wp_list_pluck( $similar, 'ID' ) );
	shuffle( $all_ids );
	$rand_ids = array_slice( $all_ids, 0, $limit - count( $similar ) );

	$random = $rand_ids ? get_posts( [
		'post_type'   => 'attachment',
		'post_status' => 'inherit',
		'post__in'    => $rand_ids,
	] ) : [];

	/* --- scal & wyślij --- */
	$items = array_merge( $similar, $random );
	shuffle( $items );

	$out = array_map( static function ( $p ) {
		return [
			'id'    => $p->ID,
			'thumb' => wp_get_attachment_image_url( $p->ID, 'thumbnail' ),
			'url'   => ibag_photo_url( $p->ID ),
		];
	}, $items );

	wp_send_json_success( $out );
}

/* -------------------------------------------------------------------------
 *  CACHE – czyść przy aktualizacji galerii
 * ---------------------------------------------------------------------- */
function ibag_clear_gallery_cache( $gallery_id ) {
	$file = WP_CONTENT_DIR . "/cache/ibag/gallery-{$gallery_id}.html";
	if ( file_exists( $file ) ) {
		unlink( $file );
	}
}
add_action( 'ibag_gallery_updated', 'ibag_clear_gallery_cache' );

/* -------------------------------------------------------------------------
 *  ADMIN MENU + skrypty
 * ---------------------------------------------------------------------- */
add_action( 'admin_menu', static function () {
	add_menu_page(
		'InkByAI Gallery', 'InkByAI Gallery', 'manage_options',
		'inkbyaig',
		static function () { require __DIR__ . '/admin-page-my.php'; },
		'dashicons-format-gallery',
		76
	);
	add_submenu_page( 'inkbyaig', 'Ustawienia', 'Ustawienia', 'manage_options',
		'inkbyaig_opt', static function () { require __DIR__ . '/admin-page-options.php'; } );
	add_submenu_page( 'inkbyaig', 'Efekty', 'Efekty', 'manage_options',
		'inkbyaig_eff', static function () { require __DIR__ . '/admin-page-effects.php'; } );

	if ( ibag_modula_active() ) {
		add_submenu_page( 'inkbyaig', 'Import Modula', 'Import Modula', 'manage_options',
			'inkbyaig_modula', static function () { require __DIR__ . '/admin-page-modula.php'; } );
	}
}, 5 );

add_action('admin_enqueue_scripts', static function ($hook) {
    if (strpos($hook, 'inkbyaig') === false) {
        return;
    }
    wp_enqueue_media();
    wp_enqueue_script(
        'ibag-media',
        plugin_dir_url(__FILE__) . 'ibag-media.js',
        ['jquery'],
        filemtime(__DIR__ . '/ibag-media.js'),
        true
    );
    wp_localize_script('ibag-media', 'ibagAjax', [
        'url'       => admin_url('admin-ajax.php'),
        'nonce'     => wp_create_nonce('ibag_nonce'),
        'restUrl'   => rest_url('wp/v2/media'),
        'restNonce' => wp_create_nonce('wp_rest'),
    ]);
    wp_enqueue_style(
        'ibag-admin-style',
        plugin_dir_url(__FILE__) . 'inkbyaigallery.css',
        [],
        filemtime(__DIR__ . '/inkbyaigallery.css')
    );
});

/* -------------------------------------------------------------------------
 *  FRONT-END skrypty + style
 * ---------------------------------------------------------------------- */
add_action('wp_enqueue_scripts', static function () {
    if (is_admin() || wp_doing_ajax()) {
        return;
    }
    wp_enqueue_script(
        'ibag-frontend',
        plugin_dir_url(__FILE__) . 'ibag-frontend.js',
        [],
        filemtime(__DIR__ . '/ibag-frontend.js'),
        true
    );
    wp_script_add_data('ibag-frontend', 'rocket-exclude', '1');
    wp_script_add_data('ibag-frontend', 'data-no-minify', '1');
    wp_localize_script('ibag-frontend', 'ibagAjax', [
        'url'   => admin_url('admin-ajax.php'),
        'nonce' => wp_create_nonce('ibag_nonce'),
    ]);
    wp_localize_script('ibag-frontend', 'ibagSet', [
        'settings' => InkByAIGallery::sets(),
        'effects'  => InkByAIGallery::effs(),
    ]);
    wp_enqueue_style(
        'ibag-style',
        plugin_dir_url(__FILE__) . 'inkbyaigallery.css',
        [],
        filemtime(__DIR__ . '/inkbyaigallery.css')
    );
});

/* -------------------------------------------------------------------------
 *  HTML kafelka  — BOT-friendly (src = prawdziwa miniatura)
 * ---------------------------------------------------------------------- */
/* -------------------------------------------------------------------------
 *  HTML kafelka – placeholder dla userów, data-src dla JS,
 *  BOT-FIX zamieni na src=miniatura.
 * ---------------------------------------------------------------------- */
function ibag_thumb_html( int $id ): string {

	$opt        = get_option( 'ibag_opt', [ 'thumb' => 150 ] );
	$thumb_size = (int) ( $opt['thumb'] ?? 150 );

	$src_medium = wp_get_attachment_image_url( $id, 'medium' );
	$src_full   = wp_get_attachment_image_url( $id, 'full' );
	if ( ! $src_medium || ! $src_full ) {
		return '';
	}

	$meta  = wp_get_attachment_metadata( $id );
	$w     = (int) ( $meta['width']  ?? $thumb_size );
	$h     = (int) ( $meta['height'] ?? $thumb_size );
	$title = esc_attr( get_the_title( $id ) );
	$alt   = esc_attr( get_post_meta( $id, '_wp_attachment_image_alt', true ) ?: $title );

	/* placeholder SVG – 0 B transferu, zero CLS */
	$ph = sprintf(
		'data:image/svg+xml,%%3Csvg xmlns%%3D%%22http://www.w3.org/2000/svg%%22 viewBox%%3D%%220 0 %1$d %2$d%%22%%3E%%3C/svg%%3E',
		$w, $h
	);

	return sprintf(
		'<a href="%s" class="ibg-link" title="%s" data-full="%s" data-id="%d">' .
			/* ⬇️ src = placeholder,  data-src = real thumb */
			'<img class="ibg-lazy" src="%s" data-src="%s" alt="%s" ' .
			     'width="%d" height="%d" loading="lazy" style="aspect-ratio:%d/%d;" ' .
			     'data-wprocket-ignore="true" data-no-optimize="true" />' .

			'<!-- rocket-ignore --><noscript>' .
			     '<img src="%s" alt="%s" width="%d" height="%d" loading="lazy" />' .
			'</noscript><!-- /rocket-ignore -->' .
		'</a>',
		esc_url( $src_full ),
		$title,
		esc_url( $src_full ),
		$id,
		$ph,                              // ⬅️ placeholder
		esc_url( $src_medium ),          // data-src
		$alt,
		$w, $h,
		$w, $h,
		esc_url( $src_medium ),          // noscript = thumb
		$alt,
		$w, $h
	);
}
/* -------------------------------------------------------------------------
 *  SHORTCODE: [inkbyaigallery id=123]
 * ---------------------------------------------------------------------- */
add_shortcode('inkbyaigallery', static function ($atts): string {
    $idx = isset($atts['id']) ? (int)$atts['id'] : 0;
    $g   = ibag_get_gals();
    if (!isset($g[$idx])) {
        return '';
    }

    /* BOT VERSION ----------------------------------------------------- */
    $ua     = $_SERVER['HTTP_USER_AGENT'] ?? '';
    $is_bot = (bool)preg_match('/googlebot|bingbot|yandex|baiduspider|facebookexternalhit|twitterbot|rogerbot|linkedinbot|embedly|quora link preview|showyoubot|outbrain|pinterest|slackbot|vkShare|W3C_Validator|Facebot|WhatsApp|TelegramBot/i', $ua);

    if ($is_bot) {
        $dir  = WP_CONTENT_DIR . '/cache/ibag/';
        $file = $dir . "gallery-{$idx}.html";
        if (file_exists($file)) {
            return file_get_contents($file);
        }
        $html = "<div class='ibag-bot-version'><h2>" . esc_html($g[$idx]['name'] ?? '') . "</h2><div class='bot-images'>";
        foreach ($g[$idx]['image_ids'] as $id) {
            if (wp_attachment_is_image($id)) {
                $src = wp_get_attachment_image_url($id, 'full');
                $alt = esc_attr(get_post_meta($id, '_wp_attachment_image_alt', true) ?: get_the_title($id));
                $html .= "<a href='" . esc_url($src) . "' class='bot-image-link'><img src='" . esc_url($src) . "' alt='" . $alt . "' /></a>";
            }
        }
        $html .= "</div></div>";
        if (!is_dir($dir)) {
            wp_mkdir_p($dir);
            file_put_contents($dir . '.htaccess', "Deny from all\n");
        }
        file_put_contents($file, $html);
        return $html;
    }

    /* USER VERSION ---------------------------------------------------- */
    $page      = max(1, (int)(get_query_var('paged') ?: get_query_var('page')));
    $PER_PAGE  = 30;
    $offset    = ($page - 1) * $PER_PAGE;
    $ids       = $g[$idx]['image_ids'];
    $first     = array_slice($ids, $offset, $PER_PAGE);
    $rest      = array_slice($ids, $offset + $PER_PAGE);

    $out  = '<div class="inkbyaig-gallery" data-gallery-id="' . $idx . '" data-rest="' . esc_attr(wp_json_encode($rest)) . '" data-ajax="' . esc_url(admin_url('admin-ajax.php')) . '" data-nonce="' . wp_create_nonce('ibag_nonce') . '">';
    $out .= '<ul class="ibg-grid">';
    foreach ($first as $id) {
        if (wp_attachment_is_image($id)) {
            $out .= '<li class="ibag-tile">' . ibag_thumb_html($id) . '</li>';
        }
    }
    $out .= '<li class="ibg-sentinel"></li></ul></div>';
    return $out;
});
/* -----------------------------------------------------------
 *  Provider „InkByAI Images” dla wbudowanych sitemap WP 5.5+
 * --------------------------------------------------------- */
add_filter( 'wp_sitemaps_register_providers', function( $providers ) {
	require_once ABSPATH . WPINC . '/sitemaps/class-wp-sitemaps-provider.php';

	class IBAG_Image_Sitemap_Provider extends WP_Sitemaps_Provider {
		public function __construct() { $this->name = 'inkbyai'; $this->object_type = 'inkbyai'; }

		/*  --- ile pod-stron w mapie (1000 URL = limit) --- */
		public function get_max_num_pages() {
			$ids = array_merge( ...array_column( ibag_get_gals(), 'image_ids' ) );
			$unique = array_unique( $ids );
			return (int) ceil( count( $unique ) / 1000 );
		}

		/*  --- generuj wpisy dla danej strony mapy --- */
		public function get_url_list( $page_num, $object_subtype = '' ) {
			$ids = array_merge( ...array_column( ibag_get_gals(), 'image_ids' ) );
			$ids = array_unique( $ids );

			$offset = ( $page_num - 1 ) * 1000;
			$batch  = array_slice( $ids, $offset, 1000 );

			$out = [];
			foreach ( $batch as $id ) {
				if ( ! wp_attachment_is_image( $id ) ) continue;

				$loc  = home_url( "foto/$id" );
				$img  = wp_get_attachment_image_url( $id, 'full' );
				$alt  = get_post_meta( $id, '_wp_attachment_image_alt', true ) ?: get_the_title( $id );

				$out[] = [
					'loc'           => $loc,
					'image:image'   => [
						'image:loc'        => $img,
						'image:caption'    => $alt,
						'image:title'      => $alt,
					],
					'lastmod'       => gmdate( 'c', get_post_modified_time( 'U', true, $id ) ),
				];
			}
			return $out;
		}
	}

	$providers['inkbyai'] = new IBAG_Image_Sitemap_Provider();
	return $providers;
} );

/* -------------------------------------------------------------------------
 *  AJAX — podstawowe operacje + LOAD MORE
 * ---------------------------------------------------------------------- */
$ibag_actions = ['add', 'del', 'move', 'copy', 'seo', 'tag', 'clone', 'clone_all', 'load_more'];
foreach ($ibag_actions as $act) {
    add_action('wp_ajax_ibag_' . $act,        'ibag_ajax_' . $act);
    add_action('wp_ajax_nopriv_ibag_' . $act, 'ibag_ajax_' . $act);
}

function ibag_check_sec() {
    check_ajax_referer('ibag_nonce', 'sec');
}

function ibag_ajax_load_more() {
    ibag_check_sec();
    $ids = array_map('intval', (array)$_POST['ids']);
    if (!$ids) {
        wp_send_json_error();
    }
    $html = '';
    foreach ($ids as $id) {
        if (wp_attachment_is_image($id)) {
            $html .= '<li class="ibag-tile">' . ibag_thumb_html($id) . '</li>';
        }
    }
    wp_send_json_success($html);
}
/* ==============================================================
 *  BOT-FIX · zamiana placeholder → src  (tylko dla botów)
 *  • nie dotyka userów – dalej mają lazy-load + placeholder SVG
 *  • działa nawet, gdy HTML cachuje WP Rocket / Cloudflare
 * ============================================================== */

/* 1.  Jeśli UA wygląda na bota – włącz bufor */
add_action( 'template_redirect', function () {

	$ua   = strtolower( $_SERVER['HTTP_USER_AGENT'] ?? '' );
	$bots = [
		'googlebot', 'bingbot', 'yandex', 'baiduspider', 'duckduckbot',
		'facebookexternalhit', 'twitterbot', 'linkedinbot', 'embedly',
		'pinterest', 'slackbot', 'vkshare', 'rogerbot', 'quora link preview',
	];

	foreach ( $bots as $b ) {
		if ( strpos( $ua, $b ) !== false ) {
			ob_start( 'ibag_bot_buffer_replace' );   // 👉 patrz punkt 2
			return;
		}
	}
}, 0 );  // priorytet 0 = uruchom przed innymi buforami

/* 2.  Jedyna (!) funkcja podmieniająca placeholdery */
if ( ! function_exists( 'ibag_bot_buffer_replace' ) ) {

	function ibag_bot_buffer_replace( string $html ): string {

		/* ── Case A ── src="data:image/svg+xml…"  + data-src="thumb.jpg" */
		$html = preg_replace_callback(
			'~<img\b([^>]*?)src=(["\'])data:image/svg\+xml[^>]+?data-src=(["\'])(.*?)\3([^>]*?)>~i',
			static function ( $m ) {
				return '<img' . $m[1] . 'src=' . $m[2] . esc_url_raw( $m[4] ) . $m[2] . $m[5] . '>';
			},
			$html
		);

		/* ── Case B ── src="(pusty lub #)"  + data-src="thumb.jpg" */
		$html = preg_replace_callback(
			'~<img\b([^>]*?)src=(["\'])(?:\#|0|""|\'\')?\2([^>]*?)data-src=(["\'])(https?://.*?)\4([^>]*?)>~i',
			static function ( $m ) {
				return '<img' . $m[1] . 'src=' . $m[2] . esc_url_raw( $m[5] ) . $m[2] . $m[3] . $m[6] . '>';
			},
			$html
		);

		/* ── Case C ── src istnieje, ale nie zaczyna się od http/https (placeholder Base64) */
		$html = preg_replace_callback(
			'~<img\b([^>]*?)src=(["\'])(?!https?://)(.*?)\2([^>]*?)data-src=(["\'])(https?://.*?)\5([^>]*?)>~i',
			static function ( $m ) {
				return '<img' . $m[1] . 'src=' . $m[2] . esc_url_raw( $m[6] ) . $m[2] . $m[4] . $m[7] . '>';
			},
			$html
		);

		return $html;
	}
}
/* --------------------------------------------------------------------- */
?>