<?php
/**
 * Three-minute setup wizard.
 *
 * @package OrbitstemSEO
 */

namespace Orbitstem\SEO\Admin;

use Orbitstem\SEO\Core\Settings;
use Orbitstem\SEO\Plugin;

defined( 'ABSPATH' ) || exit;

/**
 * Four short steps: what the site is, who is behind it, moving over from
 * another SEO plugin, and the first scan. Each step saves through the normal
 * settings (so every value is cleaned the same way) and can be skipped.
 */
class SetupPage {

	const SLUG   = 'orbitstem-seo-setup';
	const ACTION = 'orbitstem_seo_setup';
	const DONE   = 'orbitstem_seo_setup_done';

	/**
	 * Plugin services.
	 *
	 * @var Plugin
	 */
	private $plugin;

	/**
	 * Constructor.
	 *
	 * @param Plugin $plugin Plugin services.
	 */
	public function __construct( Plugin $plugin ) {
		$this->plugin = $plugin;
	}

	/**
	 * Registers hooks.
	 */
	public function register() {
		add_action( 'admin_menu', array( $this, 'menu' ), 30 );
		add_action( 'admin_head', array( $this, 'hide_menu_item' ) );
		add_filter( 'admin_title', array( $this, 'admin_title' ), 10, 2 );
		add_action( 'admin_post_' . self::ACTION, array( $this, 'handle' ) );
	}

	/**
	 * Adds the page (reached from the dashboard). It is registered under the
	 * plugin's menu, as an empty parent logs a PHP "Deprecated" notice on
	 * recent PHP versions, and its menu item is removed again in admin_head.
	 */
	public function menu() {
		add_submenu_page( Admin::SLUG, __( 'Set up Orbitstem SEO', 'orbitstem-seo' ), __( 'Setup', 'orbitstem-seo' ), Admin::capability(), self::SLUG, array( $this, 'render' ) );
	}

	/**
	 * Keeps the setup page out of the menu (after the page title was set).
	 */
	public function hide_menu_item() {
		remove_submenu_page( Admin::SLUG, self::SLUG );
	}

	/**
	 * Browser title for the setup page.
	 *
	 * @param string $admin_title Full title.
	 * @param string $title       Page title.
	 * @return string
	 */
	public function admin_title( $admin_title, $title ) {
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- view state only.
		if ( isset( $_GET['page'] ) && self::SLUG === $_GET['page'] && '' === trim( (string) $title ) ) {
			/* translators: %s: site name */
			return sprintf( __( 'Set up Orbitstem SEO &lsaquo; %s &#8212; WordPress', 'orbitstem-seo' ), get_bloginfo( 'name' ) );
		}
		return $admin_title;
	}

	/**
	 * Whether setup was finished or skipped.
	 *
	 * @return bool
	 */
	public static function done() {
		return (bool) get_option( self::DONE );
	}

	/**
	 * Saves one step and moves to the next.
	 */
	public function handle() {
		if ( ! current_user_can( Admin::capability() ) ) {
			wp_die( esc_html__( 'You do not have permission to do this.', 'orbitstem-seo' ), 403 );
		}
		check_admin_referer( self::ACTION );
		$step = isset( $_POST['step'] ) ? absint( $_POST['step'] ) : 1;
		$all  = $this->plugin->settings->all();

		if ( isset( $_POST['skip'] ) ) {
			update_option( self::DONE, time(), false );
			wp_safe_redirect( admin_url( 'admin.php?page=' . Admin::SLUG ) );
			exit;
		}
		if ( 1 === $step ) {
			$kind                       = isset( $_POST['site_kind'] ) ? sanitize_key( wp_unslash( $_POST['site_kind'] ) ) : 'blog';
			$all['knowledge_type']      = 'personal' === $kind ? 'person' : 'organization';
			$all['local']               = array_merge( (array) $all['local'], array( 'enabled' => 'local' === $kind ) );
			$all['noindex_empty_terms'] = ! empty( $_POST['noindex_empty_terms'] ); // Shown as a ticked-or-not box on this step, never changed silently.
			update_option( Settings::OPTION, $all );
		} elseif ( 2 === $step ) {
			// Settings::sanitize() cleans every value on update_option().
			// phpcs:disable WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
			$all['knowledge_name']    = isset( $_POST['knowledge_name'] ) ? wp_unslash( $_POST['knowledge_name'] ) : '';
			$all['knowledge_logo']    = isset( $_POST['knowledge_logo'] ) ? wp_unslash( $_POST['knowledge_logo'] ) : '';
			$all['knowledge_same_as'] = isset( $_POST['knowledge_same_as'] ) ? wp_unslash( $_POST['knowledge_same_as'] ) : '';
			$all['twitter_site']      = isset( $_POST['twitter_site'] ) ? wp_unslash( $_POST['twitter_site'] ) : '';
			// phpcs:enable
			update_option( Settings::OPTION, $all );
		} elseif ( 4 === $step ) {
			$this->plugin->scanner->start();
			update_option( self::DONE, time(), false );
			RedirectsPage::notice( 'success', __( 'Setup finished. The first scan is running in the background; the dashboard fills in as it goes.', 'orbitstem-seo' ) );
			wp_safe_redirect( admin_url( 'admin.php?page=' . Admin::SLUG ) );
			exit;
		}
		wp_safe_redirect( admin_url( 'admin.php?page=' . self::SLUG . '&step=' . min( 4, $step + 1 ) ) );
		exit;
	}

	/**
	 * Renders the current step.
	 */
	public function render() {
		if ( ! current_user_can( Admin::capability() ) ) {
			wp_die( esc_html__( 'You do not have permission to view this page.', 'orbitstem-seo' ) );
		}
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- view state only.
		$step  = isset( $_GET['step'] ) ? min( 4, max( 1, absint( $_GET['step'] ) ) ) : 1;
		$s     = $this->plugin->settings;
		$steps = array(
			1 => __( 'Your site', 'orbitstem-seo' ),
			2 => __( 'Name and logo', 'orbitstem-seo' ),
			3 => __( 'Switching', 'orbitstem-seo' ),
			4 => __( 'First scan', 'orbitstem-seo' ),
		);
		Ui::open( Admin::SLUG, __( 'Set up Orbitstem SEO', 'orbitstem-seo' ), __( 'Four short steps. Everything can be changed later in Settings.', 'orbitstem-seo' ) );
		?>
		<ol class="os-steps">
			<?php foreach ( $steps as $number => $label ) : ?>
				<li class="<?php echo esc_attr( $number === $step ? 'is-current' : ( $number < $step ? 'is-done' : '' ) ); ?>"><?php echo esc_html( $label ); ?></li>
			<?php endforeach; ?>
		</ol>
		<form class="os-card os-setup" method="post" action="<?php echo esc_url( admin_url( 'admin-post.php' ) ); ?>">
			<input type="hidden" name="action" value="<?php echo esc_attr( self::ACTION ); ?>" />
			<input type="hidden" name="step" value="<?php echo esc_attr( $step ); ?>" />
			<?php wp_nonce_field( self::ACTION ); ?>
			<?php if ( 1 === $step ) : ?>
				<h2><?php esc_html_e( 'What kind of site is this?', 'orbitstem-seo' ); ?></h2>
				<?php
				$kinds   = array(
					'blog'     => array( __( 'Blog or magazine', 'orbitstem-seo' ), __( 'Articles and news.', 'orbitstem-seo' ) ),
					'shop'     => array( __( 'Online shop', 'orbitstem-seo' ), __( 'Products; WooCommerce products get full Product schema.', 'orbitstem-seo' ) ),
					'local'    => array( __( 'Local business', 'orbitstem-seo' ), __( 'A place customers visit; you can add your address and hours next.', 'orbitstem-seo' ) ),
					'company'  => array( __( 'Company or organization', 'orbitstem-seo' ), __( 'Services, team, contact.', 'orbitstem-seo' ) ),
					'personal' => array( __( 'Personal site or portfolio', 'orbitstem-seo' ), __( 'About one person.', 'orbitstem-seo' ) ),
				);
				$current = 'person' === $s->get( 'knowledge_type' ) ? 'personal' : ( ! empty( $s->get( 'local' )['enabled'] ) ? 'local' : 'blog' );
				?>
				<fieldset class="os-choices">
					<legend class="screen-reader-text"><?php esc_html_e( 'Kind of site', 'orbitstem-seo' ); ?></legend>
					<?php foreach ( $kinds as $key => $kind ) : ?>
						<label class="os-choice"><input type="radio" name="site_kind" value="<?php echo esc_attr( $key ); ?>" <?php checked( $current, $key ); ?> /> <strong><?php echo esc_html( $kind[0] ); ?></strong> <span class="description"><?php echo esc_html( $kind[1] ); ?></span></label>
					<?php endforeach; ?>
				</fieldset>
				<p>
					<input type="hidden" name="noindex_empty_terms" value="0" />
					<label><input type="checkbox" name="noindex_empty_terms" value="1" <?php checked( (bool) $s->get( 'noindex_empty_terms' ) ); ?> /> <?php esc_html_e( 'Hide empty category and tag pages from search results (recommended: a page with no posts helps nobody)', 'orbitstem-seo' ); ?></label>
				</p>
			<?php elseif ( 2 === $step ) : ?>
				<h2><?php esc_html_e( 'Who is behind the site?', 'orbitstem-seo' ); ?></h2>
				<p class="description"><?php esc_html_e( 'Search engines use this for the knowledge panel and in structured data.', 'orbitstem-seo' ); ?></p>
				<p><label for="os-setup-name"><strong><?php esc_html_e( 'Name', 'orbitstem-seo' ); ?></strong></label><br /><input type="text" class="regular-text" id="os-setup-name" name="knowledge_name" value="<?php echo esc_textarea( (string) $s->get( 'knowledge_name' ) ); ?>" placeholder="<?php echo esc_attr( get_bloginfo( 'name' ) ); ?>" /></p>
				<p><label for="os-setup-logo"><strong><?php esc_html_e( 'Logo or photo URL', 'orbitstem-seo' ); ?></strong></label><br /><input type="url" class="regular-text" id="os-setup-logo" name="knowledge_logo" value="<?php echo esc_attr( (string) $s->get( 'knowledge_logo' ) ); ?>" /></p>
				<p><label for="os-setup-profiles"><strong><?php esc_html_e( 'Social profiles (one per line)', 'orbitstem-seo' ); ?></strong></label><br /><textarea class="large-text" rows="3" id="os-setup-profiles" name="knowledge_same_as"><?php echo esc_textarea( implode( "\n", (array) $s->get( 'knowledge_same_as' ) ) ); ?></textarea></p>
				<p><label for="os-setup-x"><strong><?php esc_html_e( 'X (Twitter) username', 'orbitstem-seo' ); ?></strong></label><br /><input type="text" id="os-setup-x" name="twitter_site" value="<?php echo esc_attr( (string) $s->get( 'twitter_site' ) ); ?>" placeholder="yourname" /></p>
			<?php elseif ( 3 === $step ) : ?>
				<h2><?php esc_html_e( 'Coming from another SEO plugin?', 'orbitstem-seo' ); ?></h2>
				<?php
				$sources = array_filter(
					$this->plugin->importer->sources(),
					function ( $source ) {
						return $source->has_data();
					}
				);
				?>
				<?php if ( $sources ) : ?>
					<p><?php esc_html_e( 'Orbitstem SEO found titles and descriptions from:', 'orbitstem-seo' ); ?></p>
					<ul class="os-plainlist">
						<?php foreach ( $sources as $id => $source ) : ?>
							<li><a class="button" href="<?php echo esc_url( admin_url( 'admin.php?page=' . ImportPage::SLUG . '&preview=' . $id ) ); ?>" target="_blank"><?php echo esc_html( sprintf( /* translators: %s: plugin name */ __( 'Preview the import from %s', 'orbitstem-seo' ), $source->name() ) ); ?></a></li>
						<?php endforeach; ?>
					</ul>
					<p class="description"><?php esc_html_e( 'The preview opens in a new tab. Nothing is copied until you confirm, the other plugin\'s data is never changed, and the import can be rolled back. While the other plugin is active, Orbitstem SEO prints nothing, so you never get duplicate tags.', 'orbitstem-seo' ); ?></p>
				<?php else : ?>
					<p><?php esc_html_e( 'No data from Yoast SEO, Rank Math, All in One SEO, SEOPress or The SEO Framework was found. Nothing to move over.', 'orbitstem-seo' ); ?></p>
				<?php endif; ?>
			<?php else : ?>
				<h2><?php esc_html_e( 'Run the first scan', 'orbitstem-seo' ); ?></h2>
				<p><?php esc_html_e( 'The scan checks your links, images, sitemap and the SEO tags on a sample of pages, in the background. When it is done, the dashboard shows the few things worth fixing first.', 'orbitstem-seo' ); ?></p>
			<?php endif; ?>
			<p class="os-setup__actions">
				<?php submit_button( 4 === $step ? __( 'Start the scan and finish', 'orbitstem-seo' ) : __( 'Continue', 'orbitstem-seo' ), 'primary', 'submit', false ); ?>
				<button type="submit" name="skip" value="1" class="button-link"><?php esc_html_e( 'Skip setup', 'orbitstem-seo' ); ?></button>
			</p>
		</form>
		<?php
		Ui::close();
	}
}