<?php
/**
 * Plugin Name: Elementor Addon
 * Description: Simple hello world widgets for Elementor.
 * Version:     1.0.0
 * Author:      Elementor Developer
 * Author URI:  https://developers.elementor.com/
 * Text Domain: elementor-addon
 *
 * Requires Plugins: elementor
 * Elementor tested up to: 3.21.0
 * Elementor Pro tested up to: 3.21.0
 */

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

/**
 * Register widget files
 */
function register_hello_world_widget( $widgets_manager ) {
	require_once( __DIR__ . '/widgets/apartaments.php' );

	$widgets_manager->register( new \Elementor_Apartaments() );
}
add_action( 'elementor/widgets/register', 'register_hello_world_widget' );

/**
 * Register scripts/styles only.
 * Do not enqueue them globally.
 */
function elementor_addon_register_assets() {

	// Swiper CSS
	wp_register_style(
		'elementor-addon-swiper',
		plugins_url( 'plugins/swiper/swiper-bundle.min.css', __FILE__ ),
		[],
		'11.0.0'
	);

	// Fancybox CSS
	wp_register_style(
		'elementor-addon-fancybox',
		'https://cdn.jsdelivr.net/npm/@fancyapps/ui@5.0/dist/fancybox/fancybox.css',
		[],
		'5.0'
	);

	// Widget CSS
	wp_register_style(
		'elementor-addon-main-css',
		plugins_url( 'assets/css/main.css', __FILE__ ),
		[ 'elementor-addon-swiper', 'elementor-addon-fancybox' ],
		'1.0.0'
	);

	// Swiper JS
	wp_register_script(
		'elementor-addon-swiper',
		plugins_url( 'plugins/swiper/swiper-bundle.min.js', __FILE__ ),
		[],
		'11.0.0',
		true
	);

	// Fancybox JS
	wp_register_script(
		'elementor-addon-fancybox',
		'https://cdn.jsdelivr.net/npm/@fancyapps/ui@5.0/dist/fancybox/fancybox.umd.js',
		[],
		'5.0',
		true
	);

	// Widget JS
	wp_register_script(
		'elementor-addon-main-js',
		plugins_url( 'assets/js/main.js', __FILE__ ),
		[ 'jquery', 'elementor-addon-swiper', 'elementor-addon-fancybox' ],
		'1.0.0',
		true
	);
}
add_action( 'wp_enqueue_scripts', 'elementor_addon_register_assets' );

/**
 * Przekaż dane do JS (ajaxUrl + nonce) gdy skrypt jest enqueue'owany przez widget.
 */
function elementor_addon_localize_scripts() {
	wp_localize_script( 'elementor-addon-main-js', 'apartamentsData', [
		'ajaxUrl' => admin_url( 'admin-ajax.php' ),
		'nonce'   => wp_create_nonce( 'apartamenty_price_history_nonce' ),
	] );
}
add_action( 'wp_enqueue_scripts', 'elementor_addon_localize_scripts', 20 );

// ===========================================================
// HISTORIA CEN — TABELA DB
// ===========================================================

/**
 * Tworzy tabelę wp_price_history jeśli nie istnieje lub wersja DB jest stara.
 */
function elementor_addon_create_price_history_table() {
	global $wpdb;

	$table_name      = $wpdb->prefix . 'price_history';
	$charset_collate = $wpdb->get_charset_collate();

	$sql = "CREATE TABLE {$table_name} (
		id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
		post_id BIGINT UNSIGNED NOT NULL,
		price VARCHAR(50) NOT NULL DEFAULT '',
		price_m2 VARCHAR(50) NOT NULL DEFAULT '',
		floor_space VARCHAR(50) NOT NULL DEFAULT '',
		recorded_at DATE NOT NULL,
		PRIMARY KEY (id),
		UNIQUE KEY unique_daily (post_id, recorded_at),
		KEY idx_post_id (post_id)
	) ENGINE=InnoDB {$charset_collate};";

	require_once ABSPATH . 'wp-admin/includes/upgrade.php';
	dbDelta( $sql );

	update_option( 'elementor_addon_db_version', '1.0' );
}
register_activation_hook( __FILE__, 'elementor_addon_create_price_history_table' );

/**
 * Sprawdza wersję DB przy każdym init i tworzy tabelę jeśli brakuje.
 */
function elementor_addon_maybe_update_db() {
	if ( get_option( 'elementor_addon_db_version' ) !== '1.0' ) {
		elementor_addon_create_price_history_table();
	}
}
add_action( 'init', 'elementor_addon_maybe_update_db' );

// ===========================================================
// HISTORIA CEN — CRON DZIENNY
// ===========================================================

/**
 * Rejestruje WP Cron jeśli jeszcze nie zaplanowany.
 */
function elementor_addon_schedule_cron() {
	if ( ! wp_next_scheduled( 'apartamenty_record_prices' ) ) {
		wp_schedule_event( time(), 'daily', 'apartamenty_record_prices' );
	}
}
add_action( 'wp', 'elementor_addon_schedule_cron' );

/**
 * Zapisuje aktualne ceny wszystkich apartamentów do tabeli historii.
 * Używa INSERT IGNORE — jeden rekord na apartament na dzień.
 */
function elementor_addon_record_prices() {
	global $wpdb;

	delete_transient( 'apartamenty_price_xml_cache' );

	$table_name = $wpdb->prefix . 'price_history';
	$today      = current_time( 'Y-m-d' );

	$apartaments = new WP_Query( [
		'post_type'      => 'apartamenty',
		'post_status'    => 'publish',
		'posts_per_page' => -1,
		'fields'         => 'ids',
	] );

	if ( empty( $apartaments->posts ) ) {
		return;
	}

	foreach ( $apartaments->posts as $post_id ) {
		$price       = get_post_meta( $post_id, 'information_price', true );
		$price_m2    = get_post_meta( $post_id, 'information_price_m2', true );
		$floor_space = get_post_meta( $post_id, 'information_floor_space', true );

		$wpdb->query(
			$wpdb->prepare(
				"INSERT IGNORE INTO {$table_name} (post_id, price, price_m2, floor_space, recorded_at)
				 VALUES (%d, %s, %s, %s, %s)",
				$post_id,
				(string) $price,
				(string) $price_m2,
				(string) $floor_space,
				$today
			)
		);
	}
}
add_action( 'apartamenty_record_prices', 'elementor_addon_record_prices' );

// ===========================================================
// HISTORIA CEN — AJAX ENDPOINT
// ===========================================================

/**
 * Zwraca historię cen dla apartamentu jako JSON.
 * Wymaga nonce: apartamenty_price_history_nonce
 */
function elementor_addon_get_price_history_ajax() {
	global $wpdb;

	if ( ! check_ajax_referer( 'apartamenty_price_history_nonce', 'nonce', false ) ) {
		wp_send_json_error( [ 'message' => 'Invalid nonce' ] );
		die();
	}

	$post_id = absint( $_POST['post_id'] ?? 0 );
	if ( ! $post_id ) {
		wp_send_json_error( [ 'message' => 'Invalid post_id' ] );
		die();
	}

	$table_name = $wpdb->prefix . 'price_history';

	$history = $wpdb->get_results(
		$wpdb->prepare(
			"SELECT recorded_at, price, price_m2, floor_space
			 FROM {$table_name}
			 WHERE post_id = %d
			 ORDER BY recorded_at DESC
			 LIMIT 50",
			$post_id
		)
	);

	wp_send_json_success( [
		'title'       => get_the_title( $post_id ),
		'price'       => get_post_meta( $post_id, 'information_price', true ),
		'price_m2'    => get_post_meta( $post_id, 'information_price_m2', true ),
		'floor_space' => get_post_meta( $post_id, 'information_floor_space', true ),
		'history'     => $history,
	] );
}
add_action( 'wp_ajax_apartamenty_get_price_history', 'elementor_addon_get_price_history_ajax' );
add_action( 'wp_ajax_nopriv_apartamenty_get_price_history', 'elementor_addon_get_price_history_ajax' );

// ===========================================================
// JAWNOŚĆ CEN — XML ENDPOINTS
// ===========================================================

/**
 * Rejestruje reguły przepisywania dla endpointów XML.
 */
function apartamenty_xml_rewrite_rules() {
	add_rewrite_rule( '^ceny-mieszkan\.(xml|md5)$', 'index.php?apartamenty_xml=$matches[1]', 'top' );
	add_rewrite_rule( '^dane-gov-pl\.(xml|md5)$',   'index.php?apartamenty_datagov=$matches[1]', 'top' );
}
add_action( 'init', 'apartamenty_xml_rewrite_rules', 10 );

/**
 * Dodaje query vars dla endpointów XML.
 */
function apartamenty_xml_query_vars( $vars ) {
	$vars[] = 'apartamenty_xml';
	$vars[] = 'apartamenty_datagov';
	return $vars;
}
add_filter( 'query_vars', 'apartamenty_xml_query_vars' );

/**
 * Generuje XML z cenami wszystkich apartamentów.
 * Wynik cachowany w transiencie na 1 godzinę.
 *
 * @return string XML jako string
 */
function apartamenty_generate_price_xml() {
	$cached = get_transient( 'apartamenty_price_xml_cache' );
	if ( false !== $cached ) {
		return $cached;
	}

	global $wpdb;
	$table_name = $wpdb->prefix . 'price_history';

	$query = new WP_Query( [
		'post_type'      => 'apartamenty',
		'post_status'    => 'publish',
		'posts_per_page' => -1,
		'orderby'        => 'title',
		'order'          => 'ASC',
	] );

	$x = function( $val ) {
		return htmlspecialchars( (string) $val, ENT_XML1, 'UTF-8' );
	};

	$xml  = '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
	$xml .= '<lokale inwestycja="Wyszy&#x144;skiego 12" generowany="' . $x( date( 'c' ) ) . '">' . "\n";

	if ( $query->have_posts() ) {
		foreach ( $query->posts as $post ) {
			$post_id = $post->ID;

			$type       = get_post_meta( $post_id, 'information_type',        true );
			$floor      = get_post_meta( $post_id, 'information_floor',       true );
			$floor_space = get_post_meta( $post_id, 'information_floor_space', true );
			$price      = get_post_meta( $post_id, 'information_price',       true );
			$price_m2   = get_post_meta( $post_id, 'information_price_m2',    true );
			$status     = get_post_meta( $post_id, 'information_status',      true );

			$history = $wpdb->get_results(
				$wpdb->prepare(
					"SELECT recorded_at, price, price_m2
					 FROM {$table_name}
					 WHERE post_id = %d
					 ORDER BY recorded_at DESC",
					$post_id
				)
			);

			$last_update = ! empty( $history ) ? $history[0]->recorded_at : date( 'Y-m-d' );

			$xml .= "\t" . '<lokal id="' . absint( $post_id ) . '">' . "\n";
			$xml .= "\t\t<nazwa>"        . $x( $post->post_title ) . "</nazwa>\n";
			$xml .= "\t\t<typ>"          . $x( $type )       . "</typ>\n";
			$xml .= "\t\t<pietro>"       . $x( $floor )      . "</pietro>\n";
			$xml .= "\t\t<powierzchnia>" . $x( $floor_space ) . "</powierzchnia>\n";
			$xml .= "\t\t<status>"       . $x( $status )     . "</status>\n";
			$xml .= "\t\t<cena_brutto>"  . $x( $price )      . "</cena_brutto>\n";
			$xml .= "\t\t<cena_za_m2>"   . $x( $price_m2 )   . "</cena_za_m2>\n";
			$xml .= "\t\t<data_aktualizacji>" . $x( $last_update ) . "</data_aktualizacji>\n";
			$xml .= "\t\t<historia_cen>\n";

			foreach ( $history as $row ) {
				$xml .= "\t\t\t" . '<zmiana data="' . $x( $row->recorded_at ) . '">' . "\n";
				$xml .= "\t\t\t\t<cena_brutto>" . $x( $row->price )    . "</cena_brutto>\n";
				$xml .= "\t\t\t\t<cena_za_m2>"  . $x( $row->price_m2 ) . "</cena_za_m2>\n";
				$xml .= "\t\t\t</zmiana>\n";
			}

			$xml .= "\t\t</historia_cen>\n";
			$xml .= "\t</lokal>\n";
		}
	}

	$xml .= '</lokale>';

	set_transient( 'apartamenty_price_xml_cache', $xml, HOUR_IN_SECONDS );

	return $xml;
}

/**
 * Generuje XML katalogu dane.gov.pl zgodny z XSD portalu.
 *
 * @return string XML jako string
 */
function apartamenty_generate_datagov_xml() {
	$resource_url = home_url( '/ceny-mieszkan.xml' );
	$last_update  = date( 'Y-m-d\T00:00:00.000\Z' );

	$x = function( $val ) {
		return htmlspecialchars( (string) $val, ENT_XML1, 'UTF-8' );
	};

	$xml  = '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
	$xml .= '<datasets xmlns:xsi="urn:otwarte-dane:harvester:1.0-rc1">' . "\n";
	$xml .= "\t<dataset status=\"published\">\n";
	$xml .= "\t\t<extIdent>wyszynskiego12-ceny-mieszkan-v1</extIdent>\n";
	$xml .= "\t\t<title>\n";
	$xml .= "\t\t\t<polish>Ceny mieszka&#x144; &#x2013; Wyszy&#x144;skiego 12</polish>\n";
	$xml .= "\t\t</title>\n";
	$xml .= "\t\t<description>\n";
	$xml .= "\t\t\t<polish>Historia cen lokali mieszkalnych w inwestycji przy ul. Wyszy&#x144;skiego 12. Dane aktualizowane codziennie zgodnie z ustaw&#x105; o jawno&#x15B;ci cen.</polish>\n";
	$xml .= "\t\t</description>\n";
	$xml .= "\t\t<updateFrequency>daily</updateFrequency>\n";
	$xml .= "\t\t<categories>REGI</categories>\n";
	$xml .= "\t\t<resources>\n";
	$xml .= "\t\t\t<resource status=\"published\">\n";
	$xml .= "\t\t\t\t<extIdent>wyszynskiego12-ceny-xml-v1</extIdent>\n";
	$xml .= "\t\t\t\t<url>" . $x( $resource_url ) . "</url>\n";
	$xml .= "\t\t\t\t<title>\n";
	$xml .= "\t\t\t\t\t<polish>Cennik lokali XML</polish>\n";
	$xml .= "\t\t\t\t</title>\n";
	$xml .= "\t\t\t\t<description>\n";
	$xml .= "\t\t\t\t\t<polish>Plik XML z aktualnym cennikiem i histori&#x105; zmian cen wszystkich lokali</polish>\n";
	$xml .= "\t\t\t\t</description>\n";
	$xml .= "\t\t\t\t<availability>remote</availability>\n";
	$xml .= "\t\t\t\t<lastUpdateDate>" . $x( $last_update ) . "</lastUpdateDate>\n";
	$xml .= "\t\t\t</resource>\n";
	$xml .= "\t\t</resources>\n";
	$xml .= "\t\t<tags lang=\"pl\">\n";
	$xml .= "\t\t\t<tag>mieszkania</tag>\n";
	$xml .= "\t\t\t<tag>ceny</tag>\n";
	$xml .= "\t\t\t<tag>deweloper</tag>\n";
	$xml .= "\t\t\t<tag>jawno&#x15B;&#x107; cen</tag>\n";
	$xml .= "\t\t\t<tag>historia cen</tag>\n";
	$xml .= "\t\t</tags>\n";
	$xml .= "\t</dataset>\n";
	$xml .= '</datasets>';

	return $xml;
}

/**
 * Obsługuje żądania do endpointów XML — wysyła odpowiedź i kończy.
 */
function apartamenty_xml_template_redirect() {
	$xml_type     = get_query_var( 'apartamenty_xml' );
	$datagov_type = get_query_var( 'apartamenty_datagov' );

	if ( $xml_type ) {
		$content = apartamenty_generate_price_xml();
		if ( 'xml' === $xml_type ) {
			header( 'Content-Type: application/xml; charset=UTF-8' );
			echo $content;
		} else {
			header( 'Content-Type: text/plain; charset=UTF-8' );
			echo md5( $content );
		}
		exit;
	}

	if ( $datagov_type ) {
		$content = apartamenty_generate_datagov_xml();
		if ( 'xml' === $datagov_type ) {
			header( 'Content-Type: application/xml; charset=UTF-8' );
			echo $content;
		} else {
			header( 'Content-Type: text/plain; charset=UTF-8' );
			echo md5( $content );
		}
		exit;
	}
}
add_action( 'template_redirect', 'apartamenty_xml_template_redirect', 1 );

// ===========================================================
// JAWNOŚĆ CEN — STRONA ADMINISTRACYJNA
// ===========================================================

/**
 * Rejestruje stronę Jawność Cen w menu Narzędzia wp-admin.
 */
function apartamenty_jawnosc_cen_menu() {
	add_management_page(
		'Jawność Cen',
		'Jawność Cen',
		'manage_options',
		'jawnosc-cen',
		'apartamenty_jawnosc_cen_page'
	);
}
add_action( 'admin_menu', 'apartamenty_jawnosc_cen_menu' );

/**
 * Renderuje stronę administracyjną z URL-ami do zgłoszenia.
 */
function apartamenty_jawnosc_cen_page() {
	$url_ceny    = esc_url( home_url( '/ceny-mieszkan.xml' ) );
	$url_datagov = esc_url( home_url( '/dane-gov-pl.xml' ) );
	?>
	<div class="wrap">
		<h1>Jawność Cen — Wyszyńskiego 12</h1>

		<div class="notice notice-info">
			<p>Dane aktualizowane codziennie przez WP Cron. Zgłoś URL katalogu dane.gov.pl do administratora portalu: <strong>kontakt@dane.gov.pl</strong></p>
		</div>

		<table class="widefat" style="max-width:800px; margin-top:20px;">
			<thead>
				<tr>
					<th>Plik</th>
					<th>URL</th>
					<th>Akcje</th>
				</tr>
			</thead>
			<tbody>
				<tr>
					<td><strong>Plik cen (dane)</strong></td>
					<td><code><?php echo $url_ceny; ?></code></td>
					<td>
						<button class="button" onclick="copyUrl('<?php echo esc_js( $url_ceny ); ?>')">Kopiuj URL</button>
						<a href="<?php echo $url_ceny; ?>" target="_blank" class="button">Otwórz XML</a>
					</td>
				</tr>
				<tr>
					<td><strong>Katalog dane.gov.pl</strong><br><em>(zgłoś Ministerstwu)</em></td>
					<td><code><?php echo $url_datagov; ?></code></td>
					<td>
						<button class="button button-primary" onclick="copyUrl('<?php echo esc_js( $url_datagov ); ?>')">Kopiuj URL</button>
						<a href="<?php echo $url_datagov; ?>" target="_blank" class="button">Otwórz XML</a>
					</td>
				</tr>
			</tbody>
		</table>
	</div>
	<script>
	function copyUrl(url) {
		navigator.clipboard.writeText(url).then(function() {
			alert('Skopiowano: ' + url);
		}).catch(function() {
			prompt('Skopiuj URL:', url);
		});
	}
	</script>
	<?php
}