<?php
/**
 * What the plugin offers besides the maps themselves: GPX, KML and GeoJSON in the Media Library for trusted users, a
 * public list of the locations (when the site allows it), Site Health checks and a dashboard widget with the key's state.
 */

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

/** The map files the Media Library takes, by extension. */
const DELTABREEN_MAPS_FILE_TYPES = array(
	'gpx'     => 'application/gpx+xml',
	'kml'     => 'application/vnd.google-earth.kml+xml',
	'geojson' => 'application/geo+json',
);

// Only for users trusted with HTML, as an XML file opened on its own can carry a script.
add_filter(
	'upload_mimes',
	function ( $mimes ) {
		return current_user_can( 'unfiltered_html' ) ? array_merge( (array) $mimes, DELTABREEN_MAPS_FILE_TYPES ) : $mimes;
	}
);

// WordPress reads these files as XML, JSON or text rather than by their own types, and would refuse them without this.
add_filter(
	'wp_check_filetype_and_ext',
	function ( $data, $file, $filename, $mimes, $real_mime = null ) {
		$ext = strtolower( pathinfo( (string) $filename, PATHINFO_EXTENSION ) );
		$ok  = array( 'text/xml', 'application/xml', 'text/plain', 'application/json', 'text/html' );
		if ( empty( $data['ext'] ) && isset( DELTABREEN_MAPS_FILE_TYPES[ $ext ] ) && current_user_can( 'unfiltered_html' ) && ( null === $real_mime || in_array( $real_mime, $ok, true ) ) ) {
			$data['ext']  = $ext;
			$data['type'] = DELTABREEN_MAPS_FILE_TYPES[ $ext ];
		}
		return $data;
	},
	10,
	5
);

add_action(
	'rest_api_init',
	function () {
		// The locations as the embed takes them, for data-maps-pins-url, apps and headless sites, when the site allows it.
		register_rest_route(
			'deltabreen-maps/v1',
			'/locations',
			array(
				'methods'             => 'GET',
				'permission_callback' => function () {
					return ! empty( deltabreen_maps_options()['public_locations'] );
				},
				'args'                => array(
					'category' => array(
						'type'              => 'string',
						'default'           => '',
						'sanitize_callback' => 'sanitize_text_field',
					),
				),
				'callback'            => function ( WP_REST_Request $req ) {
					$from = deltabreen_maps_location_pins( deltabreen_maps_category_list( $req['category'] ) );
					$res  = new WP_REST_Response(
						array(
							'pins'       => $from['pins'],
							'categories' => (object) $from['categories'],
							'icons'      => (object) $from['icons'],
							'glyphs'     => (object) $from['glyphs'],
						)
					);
					$res->header( 'Cache-Control', 'public, max-age=300' );
					return $res;
				},
			)
		);
	}
);

/**
 * What the map service says about this site's key, asked from this site's own address and kept ten minutes: whether
 * the service answered, and if so its answer (key, site_allowed, paused, usage). Null with no key.
 *
 * @param bool $fresh Ask again rather than use the answer kept.
 * @return array|null
 */
function deltabreen_maps_check_key( $fresh = false ) {
	$key = deltabreen_maps_clean_key( deltabreen_maps_options()['key'] );
	if ( '' === $key ) {
		return null;
	}
	$kept = 'deltabreen_maps_check_' . md5( $key );
	$was  = get_transient( $kept );
	if ( ! $fresh && is_array( $was ) ) {
		return $was;
	}
	$res  = wp_remote_get(
		add_query_arg( 'key', rawurlencode( $key ), deltabreen_maps_api_url() . '/api/v1/keys/check' ),
		array(
			'timeout' => 8,
			'headers' => array( 'Origin' => home_url() ),
		)
	);
	$body = is_wp_error( $res ) || 200 !== (int) wp_remote_retrieve_response_code( $res ) ? null : json_decode( wp_remote_retrieve_body( $res ), true );
	$out  = is_array( $body ) ? array_merge( $body, array( 'reachable' => true ) ) : array( 'reachable' => false );
	set_transient( $kept, $out, 10 * MINUTE_IN_SECONDS );
	return $out;
}

/**
 * The key's state in a sentence, with its kind: good, recommended or critical.
 *
 * @param array|null $check What deltabreen_maps_check_key() answered.
 * @return array{0: string, 1: string}
 */
function deltabreen_maps_key_state( $check ) {
	if ( null === $check ) {
		return array( 'recommended', __( 'This site has no map key yet: maps do not show until you connect it under Settings → Maps by DeltaBreen.', 'maps-by-deltabreen' ) );
	}
	if ( empty( $check['reachable'] ) ) {
		return array( 'recommended', __( 'The map service did not answer this site just now. Maps in visitors\' browsers may still work; try again in a few minutes.', 'maps-by-deltabreen' ) );
	}
	$key = $check['key'] ?? '';
	if ( 'active' !== $key ) {
		return array( 'critical', 'secret' === $key ? __( 'The key saved is a secret key, which must never go in a page: connect again or paste a publishable key.', 'maps-by-deltabreen' ) : __( 'The map key saved is unknown or revoked: connect again under Settings → Maps by DeltaBreen.', 'maps-by-deltabreen' ) );
	}
	if ( isset( $check['site_allowed'] ) && false === $check['site_allowed'] ) {
		/* translators: %s: this site's host name. */
		return array( 'critical', sprintf( __( 'The map key does not list %s, so maps here do not show: connect again, or add the site to the key in your dashboard.', 'maps-by-deltabreen' ), (string) wp_parse_url( home_url(), PHP_URL_HOST ) ) );
	}
	if ( ! empty( $check['paused'] ) || 'paused' === ( $check['usage'] ?? '' ) ) {
		return array( 'critical', __( 'Maps are paused for the rest of the month: the plan\'s map loads are used up. Nothing is charged; a top-up or a larger plan starts them again at once.', 'maps-by-deltabreen' ) );
	}
	if ( 'high' === ( $check['usage'] ?? '' ) ) {
		return array( 'recommended', __( 'Maps are working, and most of this month\'s map loads are used. Nothing is charged for going over; see your usage to be sure the month is covered.', 'maps-by-deltabreen' ) );
	}
	return array( 'good', __( 'Maps are working, and this month\'s map loads are well within your plan.', 'maps-by-deltabreen' ) );
}

add_filter(
	'site_status_tests',
	function ( $tests ) {
		$tests['direct']['deltabreen_maps_key'] = array(
			'label' => __( 'Maps by DeltaBreen', 'maps-by-deltabreen' ),
			'test'  => function () {
				list( $status, $words ) = deltabreen_maps_key_state( deltabreen_maps_check_key() );
				return array(
					'label'       => 'good' === $status ? __( 'Maps by DeltaBreen is working', 'maps-by-deltabreen' ) : __( 'Maps by DeltaBreen needs a look', 'maps-by-deltabreen' ),
					'status'      => $status,
					'badge'       => array(
						'label' => __( 'Maps', 'maps-by-deltabreen' ),
						'color' => 'good' === $status ? 'blue' : 'orange',
					),
					'description' => '<p>' . esc_html( $words ) . '</p>',
					'actions'     => '<p><a href="' . esc_url( admin_url( 'options-general.php?page=deltabreen-maps' ) ) . '">' . esc_html__( 'Open the map settings', 'maps-by-deltabreen' ) . '</a></p>',
					'test'        => 'deltabreen_maps_key',
				);
			},
		);
		return $tests;
	}
);

add_action(
	'wp_dashboard_setup',
	function () {
		if ( current_user_can( 'manage_options' ) ) {
			wp_add_dashboard_widget( 'deltabreen_maps_status', __( 'Maps by DeltaBreen', 'maps-by-deltabreen' ), 'deltabreen_maps_dashboard_widget' );
		}
	}
);

/** The dashboard widget: the key's state, how far the month's map loads have gone, and where to look further. */
function deltabreen_maps_dashboard_widget() {
	list( $status, $words ) = deltabreen_maps_key_state( deltabreen_maps_check_key() );
	$colour                 = array(
		'good'        => '#00a32a',
		'recommended' => '#dba617',
		'critical'    => '#d63638',
	);
	?>
	<p><span aria-hidden="true" style="display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px;background:<?php echo esc_attr( $colour[ $status ] ); ?>"></span><?php echo esc_html( $words ); ?></p>
	<p>
		<a href="<?php echo esc_url( admin_url( 'options-general.php?page=deltabreen-maps' ) ); ?>"><?php esc_html_e( 'Settings', 'maps-by-deltabreen' ); ?></a> ·
		<a href="<?php echo esc_url( admin_url( 'edit.php?post_type=deltabreen_location' ) ); ?>"><?php esc_html_e( 'Map locations', 'maps-by-deltabreen' ); ?></a> ·
		<a href="https://maps.deltabreen.eu/app/usage" target="_blank" rel="noopener"><?php esc_html_e( 'Usage', 'maps-by-deltabreen' ); ?></a>
	</p>
	<?php
}

/** The cookie banners maps can follow, by name. */
const DELTABREEN_MAPS_COOKIE_TOOLS = array(
	'complianz'        => 'Complianz',
	'borlabs'          => 'Borlabs Cookie',
	'cookieyes'        => 'CookieYes',
	'realcookiebanner' => 'Real Cookie Banner',
);

/** The cookie banner this site runs, as each plugin announces itself when active; empty for none of them. */
function deltabreen_maps_cookie_tool_found() {
	if ( defined( 'cmplz_free' ) || defined( 'cmplz_premium' ) || class_exists( 'COMPLIANZ' ) ) {
		return 'complianz';
	}
	if ( defined( 'BORLABS_COOKIE_VERSION' ) ) {
		return 'borlabs';
	}
	if ( defined( 'CLI_VERSION' ) ) {
		return 'cookieyes';
	}
	return defined( 'RCB_VERSION' ) ? 'realcookiebanner' : '';
}

/** The cookie banner maps follow: the one chosen, else the one this site runs; empty for none. */
function deltabreen_maps_cookie_tool() {
	$chosen = (string) deltabreen_maps_options()['cookie_tool'];
	if ( 'none' === $chosen ) {
		return '';
	}
	return isset( DELTABREEN_MAPS_COOKIE_TOOLS[ $chosen ] ) ? $chosen : deltabreen_maps_cookie_tool_found();
}

/** The category or service a banner gives maps under, unless the site names its own. */
function deltabreen_maps_cookie_default( $tool ) {
	$defaults = array(
		'complianz'        => 'marketing',
		'borlabs'          => 'deltabreen-maps',
		'cookieyes'        => 'functional',
		'realcookiebanner' => 'deltabreen-maps',
	);
	return $defaults[ $tool ] ?? '';
}

/**
 * On a page with a map that asks first: let the site's cookie banner answer for it, so maps start once the visitor
 * agrees there; the map's own "always show" choice gives way to the banner's.
 */
function deltabreen_maps_follow_banner() {
	static $done = false;
	$tool = deltabreen_maps_cookie_tool();
	if ( $done || '' === $tool ) {
		return;
	}
	$done   = true;
	$config = array(
		'tool'     => $tool,
		'category' => '' !== deltabreen_maps_options()['cookie_category'] ? deltabreen_maps_options()['cookie_category'] : deltabreen_maps_cookie_default( $tool ),
	);
	wp_enqueue_script( 'deltabreen-maps-consent' );
	wp_add_inline_script( 'deltabreen-maps-consent', 'window.deltabreenMapsConsent = ' . wp_json_encode( $config, JSON_HEX_TAG | JSON_HEX_AMP ) . '; try { localStorage.removeItem("deltabreen-maps-consent"); } catch (e) {}', 'before' );
	wp_register_style( 'deltabreen-maps-consent', false, array(), DELTABREEN_MAPS_VERSION );
	wp_enqueue_style( 'deltabreen-maps-consent' );
	wp_add_inline_style( 'deltabreen-maps-consent', '.deltabreen-map [data-maps-consent-box] label { display: none; }' );
}

// At init: a block theme renders a page's blocks before wp_enqueue_scripts, and the bridge's settings go with it.
add_action(
	'init',
	function () {
		wp_register_script( 'deltabreen-maps-consent', plugins_url( 'assets/consent-bridge.js', __FILE__ ), array(), DELTABREEN_MAPS_VERSION, array( 'in_footer' => true ) );
	}
);