<?php
/**
 * Adds a section with Upgrade nudges to the Status Report page
 *
 * @package jetpack
 */

use Automattic\Jetpack\Connection\Manager;
use Automattic\Jetpack\Jetpack_CRM_Data;
use Automattic\Jetpack\Plugins_Installer;
use Automattic\Jetpack\Redirect;
use Automattic\Jetpack\Tracking;

/**
 * Class that adds a new section to the Stats Report page
 */
class Jetpack_Stats_Upgrade_Nudges {

	/**
	 * Indicates whether the class initialized or not
	 *
	 * @var bool
	 */
	private static $initialized = false;

	/**
	 * Initialize the class by registering the action
	 *
	 * @return void
	 */
	public static function init() {
		if ( ! self::$initialized ) {
			self::$initialized = true;
			add_action( 'jetpack_admin_pages_wrap_ui_after_callback', array( __CLASS__, 'render' ) );
		}
	}

	/**
	 * Unsets the collapse nudges setting.
	 */
	public static function unset_nudges_setting() {
		$stats_options = get_option( 'stats_options' );

		if ( $stats_options ) {
			unset( $stats_options['collapse_nudges'] );
			update_option( 'stats_options', $stats_options );
		}
	}

	/**
	 * Determines whether Backup is active
	 *
	 * @return boolean
	 */
	private static function is_backup_active() {
		$rewind_data = Jetpack_Core_Json_Api_Endpoints::rewind_data();
		return is_object( $rewind_data ) && isset( $rewind_data->state ) && 'unavailable' !== $rewind_data->state;
	}

	/**
	 * Checks if a plugin is installed.
	 *
	 * @param string $plugin_file The plugin filename.
	 * @return boolean
	 */
	private static function is_plugin_installed( $plugin_file ) {
		$plugins = Plugins_Installer::get_plugins();
		return isset( $plugins[ $plugin_file ] );
	}

	/**
	 * Checks if a plugin is active.
	 *
	 * @param string $plugin_file The plugin filename.
	 * @return boolean
	 */
	private static function is_plugin_active( $plugin_file ) {
		$plugins = Plugins_Installer::get_plugins();
		return isset( $plugins[ $plugin_file ] ) && isset( $plugins[ $plugin_file ]['active'] ) && $plugins[ $plugin_file ]['active'];
	}

	/**
	 * Determines whether Scan is active
	 *
	 * @return boolean
	 */
	private static function is_scan_active() {
		$scan_data = Jetpack_Core_Json_Api_Endpoints::scan_state();
		return is_object( $scan_data ) && isset( $scan_data->state ) && 'unavailable' !== $scan_data->state;
	}

	/**
	 * Determines whether Search module is active
	 *
	 * @return boolean
	 */
	private static function is_search_active() {
		return Jetpack::is_module_active( 'search' );
	}

	/**
	 * Determines whether the Site is on a Security Plan. It will also return true if site has backup, scan and akismet.
	 *
	 * @return boolean
	 */
	private static function has_security_plan() {
		$plan_data = Jetpack_Plan::get();
		if ( is_array( $plan_data ) && isset( $plan_data['product_slug'] ) ) {
			$has_plan = wp_startswith( $plan_data['product_slug'], 'jetpack_security' );
			return (
				$has_plan || (
					self::is_backup_active() &&
					self::is_scan_active() &&
					self::is_akismet_active()
				)
			);
		}
		return false;
	}

	/**
	 * Determines whether the Site is on the Complete Plan.
	 *
	 * @return boolean
	 */
	private static function has_complete_plan() {
		$plan_data = Jetpack_Plan::get();
		if ( is_array( $plan_data ) && isset( $plan_data['product_slug'] ) ) {
			return wp_startswith( $plan_data['product_slug'], 'jetpack_complete' );
		}
		return false;
	}

	/**
	 * Determines whether the Site has a specific product.
	 *
	 * @param string $target_product_slug The product slug we are looking for.
	 *
	 * @return boolean
	 */
	private static function has_product( $target_product_slug ) {
		$site_products_slugs = array_column( Jetpack_Plan::get_products(), 'product_slug' );

		foreach ( $site_products_slugs as $product_slug ) {
			if ( wp_startswith( $product_slug, $target_product_slug ) ) {
				return true;
			}
		}

		return false;
	}

	/**
	 * Determines whether Akismet is active
	 *
	 * @return boolean
	 */
	private static function is_akismet_active() {
		return Jetpack::is_akismet_active();
	}

	/**
	 * Outputs the header of the Upgrade Secion
	 *
	 * @return void
	 */
	private static function print_header() {
		if ( self::has_security_plan() ) {
			// translators: %s is the Site Name.
			$title = __( 'Performance and growth tools for %s', 'jetpack' );
		} else {
			// translators: %s is the Site Name.
			$title = __( 'Security, performance, and growth tools for %s', 'jetpack' );
		}
		$title = sprintf( $title, get_bloginfo( 'site_name' ) );

		$aria_expanded  = 'true';
		$postbox_closed = '';

		$stats_options = get_option( 'stats_options' );

		if ( isset( $stats_options['collapse_nudges'] ) && $stats_options['collapse_nudges'] ) {
			$aria_expanded  = 'false';
			$postbox_closed = ' closed';
		}

		?>
		<div id="jp-stats-report-upgrade-wrap">
			<div class="meta-box-sortables">
				<div class="postbox<?php echo esc_attr( $postbox_closed ); ?>">
					<div class="dops-card dops-section-header is-compact jp-stats-report-upgrade-header">
						<div class="dops-section-header__label">
							<span class="dops-section-header__label-text">
								<?php echo esc_html( $title ); ?>
							</span>
						</div>
						<div class="dops-section-header__actions handle-actions hide-if-no-js">
							<button type="button" id="stats_nudges_toggle" class="handlediv" aria-expanded="<?php echo esc_attr( $aria_expanded ); ?>">
								<span class="screen-reader-text">Toggle Upgrade Nudges</span>
								<span class="toggle-indicator" aria-hidden="true"></span>
							</button>
						</div>
					</div>
					<div class="inside">
		<?php
	}

	/**
	 * Outputs the footer of the Upgrade Section
	 *
	 * @return void
	 */
	private static function print_footer() {
		?>
					</div>
				</div>
			</div>
		</div>
		<?php
	}

	/**
	 * Outputs the custom css rules of the Upgrade Section
	 *
	 * @return void
	 */
	private static function print_styles() {
		?>
		<style>
			.dops-section-header.dops-card.jp-stats-report-upgrade-header {
				font-weight: bold;
				box-shadow: none;
				flex-wrap: nowrap;
			}
			#jp-stats-report-upgrade-wrap .dops-section-header__label-text {
				white-space: normal;
			}
			#stats_nudges_toggle {
				height: 100%;
			}
			.dops-banner.dops-card.is-product.jp-stats-report-upgrade-item {
				margin-bottom: 0px;
				border-left: 0px;
				box-shadow: none;
				border-top: 1px solid #c3c4c7;
				padding: 12px 24px;
			}
			.dops-banner.dops-card.jp-stats-report-upgrade-item.jp-stats-report-upgrade-subitem {
				margin-left: 72px;
				padding-left: 0px;
			}
			.jp-stats-report-upgrade-item .dops-banner__action {
				margin-right: 0px;
			}
			#jp-stats-report-upgrade-wrap .dops-card::after {
				content: "";
			}
			.jp-stats-report-upgrade-item .dops-banner__title p {
				margin: 5px 0 0 0;
				font-weight: normal;
			}
			#jp-stats-report-upgrade-wrap .postbox {
				background-color: white;
				border: 1px solid #c3c4c7;
				margin-bottom: 0;
			}
			#jp-stats-report-upgrade-wrap .postbox .inside {
				padding: 0;
			}
		</style>
		<?php
	}
	/**
	 * Add a script which handles collapse/expansion of the nudge UI.
	 */
	private static function print_script() {
		?>
		<script>
			(function(window, document, undefined){
				window.onload = set_up_click_handler;

				const stats_wrap = document.getElementById( 'jp-stats-wrap' );
				stats_wrap.addEventListener( 'stats-loaded', function () {
					const stat_chart = document.getElementById( 'statchart' );
					if ( stat_chart === null ) {
						document.getElementById( 'stats_nudges_toggle' ).style.display = 'none';
					}
				});

				function set_up_click_handler(){
					document.getElementById( 'stats_nudges_toggle' ).onclick = function () {
						const collapseValue = 'true' === this.getAttribute( 'aria-expanded' );

						fetch( '/wp-json/jetpack/v4/settings', {
							method: 'post',
							body: JSON.stringify( { collapse_nudges: collapseValue } ),
							headers: {
								'X-WP-Nonce': "<?php echo esc_js( wp_create_nonce( 'wp_rest' ) ); ?>",
								'Content-type': 'application/json' }
						} );
					};
				}
			})(window, document, undefined);
		</script>
		<?php
	}

	/**
	 * Gets the upgrade Redirect link
	 *
	 * @param string $source The source of the redirect link.
	 * @return string
	 */
	private static function get_upgrade_link( $source ) {
		$args = array();
		if ( ! ( new Manager( 'jetpack' ) )->has_connected_owner() ) {
			$args['query'] = 'unlinked=1';
		}
		return Redirect::get_url( $source, $args );
	}

	/**
	 * Gets the product description link.
	 *
	 * @param string $product_key The product key of the product we wish to display.
	 * @return string
	 */
	private static function get_product_description_link( $product_key ) {
		return Jetpack::admin_url( array( 'page' => sprintf( 'jetpack#/product/%s', $product_key ) ) );
	}

	/**
	 * Tracks an event in Tracks
	 *
	 * @param string $event_name The event name.
	 * @return void
	 */
	private static function track_event( $event_name ) {
		$connection_manager = new Manager( 'jetpack' );
		$tracking           = new Tracking( 'jetpack', $connection_manager );
		$tracking->record_user_event(
			$event_name,
			array(
				'has_connected_owner' => $connection_manager->has_connected_owner(),
			)
		);
	}

	/**
	 * Outputs one Upgrade item
	 *
	 * @param string  $title The title of the item.
	 * @param string  $text The description of the item.
	 * @param string  $icon The path of the icon, relative to Jetpack images folder.
	 * @param string  $link The link of the button.
	 * @param string  $tracks_id The id used to identify the tracks events. Automatically prefixed with "jetpack_stats_nudges_{view|click|learn_more}_".
	 * @param string  $learn_more_link The target of the "Learn more" link.
	 * @param boolean $subitem Whether it is a subitem or not.
	 * @param string  $button_label The button label.
	 * @return void
	 */
	private static function print_item( $title, $text, $icon, $link, $tracks_id, $learn_more_link, $subitem = false, $button_label = null ) {
		$additional_classes = $subitem ? 'jp-stats-report-upgrade-subitem' : '';
		$button_class       = $subitem ? 'is-secondary' : 'is-primary';
		$icon_url           = plugins_url( '', JETPACK__PLUGIN_FILE ) . '/images/products/' . $icon;
		$button_label       = $button_label === null ? __( 'Upgrade', 'jetpack' ) : $button_label;
		$view_event         = "stats_nudges_view_$tracks_id";
		$click_event        = "stats_nudges_click_$tracks_id";
		$learn_more_event   = "stats_nudges_learn_more_$tracks_id";
		self::track_event( $view_event );

		?>
			<div class="dops-card dops-banner has-call-to-action is-product jp-stats-report-upgrade-item <?php echo esc_attr( $additional_classes ); ?>">
				<div class="dops-banner__icon-plan">
					<img src="<?php echo esc_attr( $icon_url ); ?>" alt="" width="32" height="32">
				</div>
				<div class="dops-banner__content">
					<div class="dops-banner__info">
						<div class="dops-banner__title">
							<?php echo esc_html( $title ); ?>
							<p>
								<?php echo esc_html( $text ); ?>
								<a href="<?php echo esc_attr( $learn_more_link ); ?>" class="jptracks" target="_blank" rel="noopener noreferrer" data-jptracks-name="<?php echo esc_attr( $learn_more_event ); ?>">
									<?php esc_html_e( 'Learn more', 'jetpack' ); ?>
								</a>
							</p>
						</div>
					</div>
					<div class="dops-banner__action">
						<a href="<?php echo esc_attr( $link ); ?>" type="button" class="jptracks dops-button is-compact <?php echo esc_attr( $button_class ); ?>" data-jptracks-name="<?php echo esc_attr( $click_event ); ?>">
						<?php echo esc_html( $button_label ); ?>
						</a>
					</div>
				</div>
			</div>
		<?php
	}

	/**
	 * Prints the Security item
	 *
	 * @return void
	 */
	private static function print_security() {
		$link       = self::get_product_description_link( 'security' );
		$learn_link = self::get_upgrade_link( 'stats-nudges-security-learn' );
		$text       = __( 'Comprehensive protection for your site, including Backup, Scan, and Anti-spam.', 'jetpack' );
		self::print_item( _x( 'Security', 'Jetpack product name', 'jetpack' ), $text, 'product-jetpack-security-bundle.svg', $link, 'security', $learn_link );
	}

	/**
	 * Prints the Backup item
	 *
	 * @return void
	 */
	private static function print_backup() {
		$link       = self::get_product_description_link( 'backup' );
		$learn_link = self::get_upgrade_link( 'stats-nudges-backup-learn' );
		$text       = __( 'Save every change and get back online quickly with one-click restores.', 'jetpack' );
		self::print_item( __( 'VaultPress Backup', 'jetpack' ), $text, 'product-jetpack-backup.svg', $link, 'backup', $learn_link, true );
	}

	/**
	 * Prints the Scan item
	 *
	 * @since 10.1
	 * @since 10.3 The scan nudge has been removed, but leaving this here in case we reverse course.
	 *
	 * @todo Remove this function is not used ~6 months.
	 *
	 * @return void
	 */
	private static function print_scan() {
		$link       = self::get_product_description_link( 'scan' );
		$learn_link = self::get_upgrade_link( 'stats-nudges-scan-learn' );
		$text       = __( 'Stay ahead of security threats with automated scanning and one-click fixes.', 'jetpack' );
		self::print_item( __( 'Scan', 'jetpack' ), $text, 'product-jetpack-scan.svg', $link, 'scan', $learn_link, true );
	}

	/**
	 * Prints the Akismet item
	 *
	 * @since 10.1
	 * @since 10.3 The anti-spam nudge has been removed, but leaving this here in case we reverse course.
	 *
	 * @todo Remove this function is not used ~6 months.
	 *
	 * @return void
	 */
	private static function print_akismet() {
		$link       = self::get_product_description_link( 'akismet' );
		$learn_link = self::get_upgrade_link( 'stats-nudges-akismet-learn' );
		$text       = __( 'Automatically clear spam from comments and forms.', 'jetpack' );
		self::print_item( __( 'Akismet Anti-spam', 'jetpack' ), $text, 'product-jetpack-anti-spam.svg', $link, 'akismet', $learn_link, true );
	}

	/**
	 * Prints the Search item
	 *
	 * @return void
	 */
	private static function print_search() {
		$link       = self::get_product_description_link( 'search' );
		$learn_link = self::get_upgrade_link( 'stats-nudges-search-learn' );
		$text       = __( 'Help your site visitors instantly find what they\'re looking for so they read and buy more.', 'jetpack' );
		self::print_item( __( 'Search', 'jetpack' ), $text, 'product-jetpack-search.svg', $link, 'search', $learn_link );
	}

	/**
	 * Prints the VideoPress item
	 *
	 * @return void
	 */
	private static function print_videopress() {
		$link       = self::get_product_description_link( 'videopress' );
		$learn_link = self::get_upgrade_link( 'stats-nudges-videopress-learn' );
		$text       = __( 'Engage your visitors with high-quality, ad-free videos built specifically for WordPress.', 'jetpack' );
		self::print_item( __( 'VideoPress', 'jetpack' ), $text, 'product-jetpack-videopress.svg', $link, 'videopress', $learn_link );
	}

	/**
	 * Prints the Boost item
	 *
	 * @param bool $print Whether to print the item output or just check whether it would be printed or not.
	 *
	 * @return bool
	 */
	private static function get_boost_output( $print = true ) {
		$plugin_file = 'jetpack-boost/jetpack-boost.php';
		$plugin_slug = 'jetpack-boost';
		if ( self::is_plugin_active( $plugin_file ) ) {
			return false;
		} elseif ( self::is_plugin_installed( $plugin_file ) ) {
			$label = __( 'Activate Boost', 'jetpack' );
			$link  = wp_nonce_url( 'plugins.php?action=activate&amp;plugin=' . rawurlencode( $plugin_file ) . '&amp;plugin_status=all&amp;paged=1', 'activate-plugin_' . $plugin_file );
		} else {
			$label = __( 'Install Boost', 'jetpack' );
			$link  = wp_nonce_url( self_admin_url( 'update.php?action=install-plugin&plugin=' . $plugin_slug ), 'install-plugin_' . $plugin_slug );
		}
		if ( $print ) {
			$learn_link = self::get_upgrade_link( 'stats-nudges-boost-learn' );
			$text       = __( 'Improve your site\'s performance and SEO in a few clicks with the free Jetpack Boost plugin.', 'jetpack' );
			self::print_item( __( 'Boost', 'jetpack' ), $text, 'product-jetpack-boost.svg', $link, 'boost', $learn_link, false, $label );
		}
		return true;
	}

	/**
	 * Prints the CRM item
	 *
	 * @param bool $print Whether to print the item output or just check whether it would be printed or not.
	 *
	 * @since 10.1
	 *
	 * @return bool
	 */
	private static function get_crm_output( $print = true ) {
		$plugin_file = Jetpack_CRM_Data::JETPACK_CRM_PLUGIN_SLUG;
		$plugin_slug = substr( $plugin_file, 0, strpos( $plugin_file, '/' ) );
		if ( self::is_plugin_active( $plugin_file ) ) {
			return false;
		} elseif ( self::is_plugin_installed( $plugin_file ) ) {
			$link  = wp_nonce_url( 'plugins.php?action=activate&amp;plugin=' . rawurlencode( $plugin_file ) . '&amp;plugin_status=all&amp;paged=1', 'activate-plugin_' . $plugin_file );
			$label = __( 'Activate CRM', 'jetpack' );
		} else {
			$link  = wp_nonce_url( self_admin_url( 'update.php?action=install-plugin&plugin=' . $plugin_slug ), 'install-plugin_' . $plugin_slug );
			$label = __( 'Install CRM', 'jetpack' );
		}
		if ( $print ) {
			$learn_link = self::get_upgrade_link( 'stats-nudges-crm-learn' );
			$text       = __( 'Sell more and get more leads with the free Jetpack CRM plugin built specifically for WordPress.', 'jetpack' );
			self::print_item( __( 'CRM', 'jetpack' ), $text, 'product-jetpack-crm.svg', $link, 'crm', $learn_link, false, $label );
		}
		return true;
	}

	/**
	 * Outputs the section to the Stats Report page
	 *
	 * @param string $callback The callback passed to the jetpack admin page.
	 * @return void
	 */
	public static function render( $callback ) {
		/** This filter is documented in _inc/lib/admin-pages/class.jetpack-react-page.php */
		if ( 'stats_reports_page' !== $callback || ! apply_filters( 'jetpack_show_promotions', true ) || ! current_user_can( 'manage_options' ) ) {
			return;
		}

		if ( self::has_complete_plan() ) {
			return;
		}

		if (
			self::has_security_plan() &&
			self::is_backup_active() &&
			self::is_search_active() &&
			! self::get_boost_output( false ) &&
			! self::get_crm_output( false )
		) {
			return;
		}

		self::print_styles();
		self::print_script();
		self::print_header();
		if ( ! self::has_security_plan() ) {
			self::print_security();
			if ( ! self::is_backup_active() ) {
				self::print_backup();
			}
		}
		if ( ! self::is_search_active() ) {
			self::print_search();
		}
		if ( ! self::has_product( 'jetpack_videopress' ) ) {
			self::print_videopress();
		}
		self::get_boost_output();
		self::get_crm_output();
		self::print_footer();
	}

}