<?php
/**
 * Jetpack forms dashboard.
 *
 * @package automattic/jetpack-forms
 */

namespace Automattic\Jetpack\Forms\Dashboard;

use Automattic\Jetpack\Assets;
use Automattic\Jetpack\Connection\Manager as Connection_Manager;
use Automattic\Jetpack\Forms\Jetpack_Forms;
use Automattic\Jetpack\Forms\Service\Google_Drive;
use Automattic\Jetpack\Redirect;
use Automattic\Jetpack\Status\Host;

/**
 * Handles the Jetpack Forms dashboard.
 */
class Dashboard {

	/**
	 * Priority for the dashboard menu.
	 * Needs to be high enough for us to be able to unregister the default edit.php menu item.
	 *
	 * @var int
	 */
	const MENU_PRIORITY = 999;

	/**
	 * Dashboard_View_Switch instance
	 *
	 * @var Dashboard_View_Switch
	 */
	private $switch;

	/**
	 * Creates a new Dashboard instance.
	 *
	 * @param Dashboard_View_Switch $switch Dashboard_View_Switch instance to use.
	 */
	public function __construct( Dashboard_View_Switch $switch ) {
		$this->switch = $switch;
	}

	/**
	 * Initialize the dashboard.
	 */
	public function init() {
		add_action( 'admin_menu', array( $this, 'add_admin_submenu' ), self::MENU_PRIORITY );
		add_action( 'admin_enqueue_scripts', array( $this, 'load_admin_scripts' ) );

		$this->switch->init();
	}

	/**
	 * Load JavaScript for the dashboard.
	 *
	 * @param string $hook The current admin page.
	 */
	public function load_admin_scripts( $hook ) {
		if ( 'toplevel_page_jetpack-forms' !== $hook ) {
			return;
		}

		Assets::register_script(
			'jp-forms-dashboard',
			'../../dist/dashboard/jetpack-forms-dashboard.js',
			__FILE__,
			array(
				'in_footer'    => true,
				'textdomain'   => 'jetpack-forms',
				'enqueue'      => true,
				'dependencies' => array( 'wp-api-fetch' ),
			)
		);

		$api_root = defined( 'IS_WPCOM' ) && IS_WPCOM
			? sprintf( '/wpcom/v2/sites/%s/', esc_url_raw( rest_url() ) )
			: '/wp-json/wpcom/v2/';

		wp_add_inline_script(
			'jp-forms-dashboard',
			'window.jetpackFormsData = ' . wp_json_encode( array( 'apiRoot' => $api_root ) ) . ';',
			'before'
		);

		if ( ( new Host() )->is_wpcom_platform() ) {
			Assets::register_script(
				'jp-forms-dashboard-wpcom',
				'../../dist/dashboard/jetpack-forms-dashboard.wpcom.js',
				__FILE__,
				array(
					'in_footer'    => true,
					'textdomain'   => 'jetpack-forms',
					'enqueue'      => true,
					'dependencies' => array( 'jp-forms-dashboard' ),
				)
			);
		}
	}

	/**
	 * Register the dashboard admin submenu.
	 */
	public function add_admin_submenu() {
		if ( $this->switch->get_preferred_view() === Dashboard_View_Switch::CLASSIC_VIEW ) {
			// We still need to register the jetpack forms page so it can be accessed manually.
			add_submenu_page(
				'',
				__( 'Form Responses', 'jetpack-forms' ),
				_x( 'Feedback', 'post type name shown in menu', 'jetpack-forms' ),
				'read',
				'jetpack-forms',
				array( $this, 'render_dashboard' )
			);

			return;
		}

		remove_menu_page( 'feedback' );

		add_menu_page(
			__( 'Form Responses', 'jetpack-forms' ),
			_x( 'Feedback', 'post type name shown in menu', 'jetpack-forms' ),
			'read',
			'jetpack-forms',
			array( $this, 'render_dashboard' ),
			'dashicons-feedback',
			25 // Places 'Feedback' under 'Comments' in the menu
		);
	}

	/**
	 * Render the dashboard.
	 */
	public function render_dashboard() {
		$jetpack_connected = ( defined( 'IS_WPCOM' ) && IS_WPCOM ) || ( new Connection_Manager( 'jetpack-forms' ) )->is_user_connected( get_current_user_id() );
		$user_id           = (int) get_current_user_id();

		$config = array(
			'blogId'                  => get_current_blog_id(),
			'exportNonce'             => wp_create_nonce( 'feedback_export' ),
			'newFormNonce'            => wp_create_nonce( 'create_new_form' ),
			'gdriveConnection'        => $jetpack_connected && Google_Drive::has_valid_connection( $user_id ),
			'gdriveConnectURL'        => esc_url( Redirect::get_url( 'jetpack-forms-responses-connect' ) ),
			'gdriveConnectSupportURL' => esc_url( Redirect::get_url( 'jetpack-support-contact-form-export' ) ),
			'checkForSpamNonce'       => wp_create_nonce( 'grunion_recheck_queue' ),
			'pluginAssetsURL'         => Jetpack_Forms::assets_url(),
			'hasFeedback'             => $this->has_feedback(),
		);
		?>
		<div id="jp-forms-dashboard" style="min-height: calc(100vh - 100px);" data-config="<?php echo esc_attr( wp_json_encode( $config, JSON_FORCE_OBJECT ) ); ?>"></div>
		<?php
	}

	/**
	 * Returns true if there are any feedback posts on the site.
	 *
	 * @return boolean
	 */
	private function has_feedback() {
		$posts = new \WP_Query(
			array(
				'post_type'   => 'feedback',
				'post_status' => array( 'publish', 'draft', 'spam', 'trash' ),
			)
		);

		return $posts->found_posts > 0;
	}
}
