<?php
/**
 * Add admin notices.
 *
 * @package WPDiscourse;
 */

namespace WPDiscourse\Admin;

use WPDiscourse\Shared\PluginUtilities;

/**
 * Class AdminNotice
 */
class AdminNotice {
	use PluginUtilities;

	/**
	 * Gives access to the plugin options.
	 *
	 * @access protected
	 * @var    mixed|void
	 */
	protected $options;

	/**
	 * AdminNotice constructor.
	 */
	public function __construct() {
		add_action( 'admin_notices', array( $this, 'set_admin_notices' ) );
		add_action( 'admin_init', array( $this, 'setup_options' ) );
	}

	/**
	 * Sets the plugin options.
	 */
	public function setup_options() {
		$this->options = $this->get_options();
	}

	/**
	 * Set admin notices.
	 *
	 * @return null
	 */
	public function set_admin_notices() {
		global $pagenow, $post;
		$current_screen = get_current_screen();

		// Admin notices aren't supported by the block editor. For now, disable admin notices for versions >= 5.0.
		if ( ( method_exists( $current_screen, 'is_block_editor' ) && $current_screen->is_block_editor() ) ) {

			return null;
		}

		// Post edit screen notices.
		if ( 'post.php' === $pagenow || 'post-new.php' === $pagenow ) {
			$allowed_post_types = ! empty( $this->options['allowed_post_types'] ) ? $this->options['allowed_post_types'] : array();

			if ( in_array( $post->post_type, $allowed_post_types, true ) ) {
				$post_id = $post->ID;

				$discourse_publishing_response = get_post_meta( $post_id, 'wpdc_publishing_response', true );
				if ( ! empty( $discourse_publishing_response ) ) {

					if ( 'error' === $discourse_publishing_response ) {
						$error_message = __( '<div class="notice notice-error is-dismissible"><p>There has been an error publishing this post to Discourse.</p></div>', 'wp-discourse' );

						echo wp_kses_post( $error_message );

						delete_post_meta( $post_id, 'wpdc_publishing_response' );
					}

					if ( 'success' === $discourse_publishing_response ) {
						$discourse_permalink = get_post_meta( $post_id, 'discourse_permalink', true );
						$discourse_link      = '<a href="' . esc_url( $discourse_permalink ) . '" target="_blank" rel="noreferrer noopener">' . __( 'View post', 'wp-discourse' ) . '</a>';

						$success_message = sprintf(
							// translators: Discourse post-published success message. Placeholder: discourse_permalink.
							__( '<div class="notice notice-success is-dismissible"><p>Your post has been published to Discourse. %1$s on Discourse.</p></div>', 'wp-discourse' ),
							$discourse_link
						);

						delete_post_meta( $post_id, 'wpdc_publishing_response' );

						echo wp_kses_post( $success_message );
					}
				}

				$discourse_linking_response = get_post_meta( $post_id, 'wpdc_linking_response', true );
				if ( 'error' === $discourse_linking_response ) {
					$error_message = __( '<div class="notice notice-error is-dismissible"><p>There has been an error linking this post with Discourse. Make sure you are supplying the URL of an existing topic on your forum.</p></div>', 'wp-discourse' );

					delete_post_meta( $post_id, 'wpdc_linking_response' );
					echo wp_kses_post( $error_message );
				}

				if ( 'invalid_url' === $discourse_linking_response ) {
					$error_message = __( '<div class="notice notice-error is-dismissible"><p>There has been an error linking this post with Discourse. The supplied URL does not match your forum\'s domain.</p></div>', 'wp-discourse' );

					delete_post_meta( $post_id, 'wpdc_linking_response' );
					echo wp_kses_post( $error_message );
				}

				$discourse_username       = get_user_meta( get_current_user_id(), 'discourse_username', true );
				$current_username         = wp_get_current_user()->user_login;
				$publish_username         = ! empty( $this->options['publish-username'] ) ? $this->options['publish-username'] : '';
				$use_discourse_name_field = empty( $this->options['hide-discourse-name-field'] );

				$profile_page_link = '<a href="' . esc_url( admin_url( '/profile.php' ) ) . '">' . __( 'profile page', 'wp-discourse' ) . '</a>';

				if ( empty( $discourse_username )
					&& $use_discourse_name_field
					&& $current_username !== $publish_username
				) {
					$username_not_set_notice = sprintf(
						// translators: Discourse username_not_set notice. Placeholder: discourse_username.
						__( '<div class="notice notice-error is-dismissible"><p>You have not set your Discourse username. Any posts you publish to Discourse will be published under the system default username \'%1$s\'. To stop seeing this notice, please visit your %2$s and set your Discourse username.</p></div>', 'wp-discourse' ),
						$publish_username,
						$profile_page_link
					);

					echo wp_kses_post( $username_not_set_notice );
				}
			}// End if().
		}// End if().

		return null;
	}
}
