<?php

/**
 * Class EIG_WP_CLI_Digest
 *
 * This class is instantiated in /inc/cli-init.php
 */
class EIG_WP_CLI_Digest extends EIG_WP_CLI_Command {

	/**
	 * Diagnostic profile of a WordPress environment.
	 *
	 * @param $args
	 * @param $assoc_args
	 *
	 * @throws \WP_CLI\ExitException
	 */
	public function __invoke( $args, $assoc_args ) {
		$type = in_array( 'full', $assoc_args ) ? 'full' : 'standard';
		if ( 'full' === $type && ! isset( $assoc_args['noprompt'] ) ) {
			$this->confirm( 'This can strain large databases. Proceed?', 'yellow' );
			\WP_CLI::log( 'Creating digest...' );
		} elseif ( ! isset( $assoc_args['noprompt'] ) ) {
			\WP_CLI::log( 'Creating digest...' );
			$this->colorize_log( 'For complete digest, add --full flag to this command.', '', 'B' );
		}

		$this->new_line();

		$this->colorize_log( 'DIGEST FOR ' . strtoupper( get_option( 'blogname' ) ), '', 'W', '📋️' );
		$this->colorize_log( 'BASIC INFO', '4', 'W', 'ℹ️' );
		$this->table( $this->eig_digest_basic() );

		$this->colorize_log( 'ENVIRONMENT', '4', 'W', '🖥' );
		$this->table( $this->eig_digest_environment( $type ) );

		$this->colorize_log( '🔌  PLUGINS & 🎨  THEMES:', '4', 'W' );
		$this->table( $this->eig_digest_plugins_and_themes() );

		$this->colorize_log( 'CONTENT:', '4', 'W', '📚' );
		$this->table( $this->eig_digest_core_content( $type ), array( 'POST TYPE', 'COUNT' ) );

		$this->colorize_log( '🎚  OPTIONS, ⏳  TRANSIENTS & ⏰  WP_CRON:', '4', 'W' );
		$this->table( $this->eig_digest_options_transients_cron(), array(), 'adv' );
		if ( 'full' === $type ) {
			$this->colorize_log( 'USERS:', '4', 'W', '👥' );
			$this->table( $this->eig_digest_users(), array( 'ROLE', 'COUNT' ) );
		}
	}

	/**
	 * Prepares BASIC INFO table for $this->digest()
	 *
	 * @return array
	 */
	protected function eig_digest_basic() {
		$schemes          = array( 'http://', 'https://' );
		$opts             = array();
		$opts['SITE URL'] = str_replace( $schemes, '', get_option( 'siteurl' ) );
		$opts['HOME URL'] = str_replace( $schemes, '', get_option( 'home' ) );

		if ( $opts['SITE URL'] === $opts['HOME URL'] ) {
			unset( $opts['HOME URL'] );
		}

		$front = get_option( 'show_on_front' );
		if ( 'page' === $front ) {
			$opts['HOMEPAGE SHOWS'] = 'A Static Page (PAGE: ' . get_option( 'page_on_front' ) . ')';
			$posts_page             = get_option( 'page_for_posts' );
			if ( ! empty( $posts_page ) && absint( $posts_page ) ) {
				$opts['BLOG PATH'] = str_replace( get_option( 'home' ), '', get_the_permalink( $posts_page ) ) . ' (PAGE: ' . $posts_page . ')';
			}
		} else {
			$opts['HOMEPAGE SHOWS'] = 'Latest Posts';
		}

		if ( false !== strpos( 'https://', get_option( 'home' ) ) ) {
			$opts['HTTPS'] = '✅  Uses HTTPS';
		} else {
			$opts['HTTPS'] = '⚠️  Uses HTTP';
		}

		$privacy = get_option( 'wp_page_for_privacy_policy' );
		if ( ! empty( $privacy ) && absint( $privacy ) ) {
			if ( 'publish' === get_post_status( $privacy ) ) {
				$opts['PRIVACY PAGE'] = str_replace( get_option( 'home' ), '', get_the_permalink( $privacy ) ) . ' (PAGE: ' . $privacy . ')';
			} else {
				$opts['PRIVACY PAGE'] = '⚠️  UNPUBLISHED (PAGE: ' . $privacy . ')';
			}
		}

		return $opts;
	}

	/**
	 * Prepares ENVIRONMENT table for $this->digest()
	 *
	 * @return array
	 */
	protected function eig_digest_environment( $type ) {
		global $wpdb;
		global $wp_version;

		$env = array(
			'WP VERSION'    => $wp_version,
			'PHP VERSION'   => phpversion(),
			'MYSQL VERSION' => $wpdb->db_version(),
			'DB NAME'       => DB_NAME,
			'DB CHAR SET'   => $wpdb->charset,
		);

		return $env;
	}

	/**
	 * Prepares PLUGINS & THEMES table for $this->digest()
	 *
	 * @return array
	 */
	protected function eig_digest_plugins_and_themes() {
		$info       = array();
		$template   = get_option( 'template' );
		$stylesheet = get_option( 'stylesheet' );
		if ( $template !== $stylesheet ) {
			$info['ACTIVE THEME'] = $stylesheet . ' (child theme)';
			$info['PARENT THEME'] = $template;
		} else {
			$info['ACTIVE THEME'] = $template;
		}

		$info['INSTALLED THEMES'] = count( wp_get_themes() );
		$info['ACTIVE PLUGINS']   = count( get_option( 'active_plugins' ) ) . ' of ' . count( get_plugins() );

		return $info;
	}

	/**
	 * Prepares CONTENT table for $this->digest()
	 *
	 * @param string $type - 'full' queries Core post types, CPTs and revisions, 'standard' only queries Core types
	 *
	 * @return array
	 */
	protected function eig_digest_core_content( $type ) {

		/**
		 * Use \WP_Query over get_posts() or other methods because \WP_Query->found_posts object count comes direct from MySQL.
		 */
		$posts       = new \WP_Query( array( 'post_type' => 'post', 'numberposts' => - 1 ) );
		$pages       = new \WP_Query( array( 'post_type' => 'page', 'numberposts' => - 1 ) );
		$attachments = new \WP_Query( array( 'post_type' => 'attachment', 'numberposts' => - 1 ) );

		$content          = array();
		$content['POSTS'] = $posts->found_posts;
		$content['PAGES'] = $pages->found_posts;
		$content['MEDIA'] = $attachments->found_posts;

		if ( 'full' === $type ) {
			$revisions = new \WP_Query( array( 'post_type' => 'revision', 'numberposts' => - 1 ) );
			$menus     = count( wp_get_nav_menus() );

			if ( ! empty( $menus ) ) {
				$content['NAV MENUS'] = $menus;
			}

			if ( ! empty( $revisions->found_posts ) ) {
				$content['REVISIONS'] = $revisions->found_posts;
			}
		}

		$comments_count = wp_count_comments();
		if ( $comments_count->total_comments !== 0 ) {
			if ( $comments_count->total_comments > $comments_count->spam && $comments_count->spam > 0 ) {
				$content['TOTAL COMMENTS'] = $comments_count->total_comments;
				if ( ! empty( $comments_count->approved ) ) {
					$content['COMMENTS APPROVED'] = $comments_count->approved;
				}
				if ( ! empty( $comments_count->moderated ) ) {
					$content['COMMENTS MODERATION'] = $comments_count->moderated;
				}
				if ( ! empty( $comments_count->spam ) ) {
					$content['COMMENTS SPAM'] = $comments_count->spam;
				}
				if ( ! empty( $comments_count->trash ) ) {
					$content['COMMENTS TRASHED'] = $comments_count->trash;
				}
			} else {
				if ( ! empty( $comments_count->spam ) ) {
					$content['COMMENTS SPAM'] = $comments_count->spam;
				}
			}
		}

		if ( 'full' === $type ) {
			$post_types = get_post_types( array( 'public' => true, '_builtin' => false ), 'objects' );

			if ( ! empty( $post_types ) ) {
				foreach ( $post_types as $post_type_obj ) {
					$query = new \WP_Query( array( 'post_type' => $post_type_obj->name, 'numberposts' => - 1 ) );
					if ( ! empty( $query->found_posts ) ) {
						$content[ strtoupper( $post_type_obj->label ) ] = $query->found_posts;
					}
				}
			}
		}

		return $content;
	}

	/**
	 * Prepares USERS table for $this->digest()
	 *
	 * @return array
	 */
	protected function eig_digest_users() {
		$users      = array();
		$user_query = new \WP_User_Query( array( 'number' => - 1, 'count_total' => true ) );
		$user_roles = array();
		if ( ! empty( $user_query->get_results() ) ) {
			// loop users to build counts
			foreach ( $user_query->get_results() as $user ) {
				$role         = $user->roles[0];
				$user_roles[] = $role;
			}
			// now loop counts into response
			$counts = array_count_values( $user_roles );
			foreach ( $counts as $role => $count ) {
				$users[ strtoupper( $role ) ] = $count;
			}

			$users['TOTAL'] = $user_query->get_total();

		}

		return $users;
	}

	/**
	 * Prepares OPTIONS, TRANSIENTS & CRON table for $this->digest()
	 *
	 * @return array
	 */
	protected function eig_digest_options_transients_cron() {
		/**
		 * OPTIONS QUERY
		 */
		ob_start();
			\WP_CLI::run_command(
				array( 'option', 'list' ),
				array(
					'fields'        => 'option_name,autoload,size_bytes',
					'no-transients' => true,
					'format'        => 'json',
				)
			);
		$options = trim( ob_get_clean() );
		/**
		 * TRANSIENTS QUERY
		 */
		ob_start();
			\WP_CLI::run_command(
				array( 'option', 'list' ),
				array(
					'fields'     => 'option_name,autoload,size_bytes',
					'transients' => true,
					'format'     => 'json',
				)
			);
		$transients = trim( ob_get_clean() );

		if ( ! empty( $options ) && is_string( $options ) ) {
			$options = json_decode( $options, true );
		}

		if ( ! empty( $transients ) && is_string( $transients ) ) {
			$transients = json_decode( $transients, true );
		}

		$all_opts           = 0;
		$opts_size          = 0;
		$all_trans          = 0;
		$all_trans_timeouts = 0;
		$trans_size         = 0;
		$all_autoload       = 0;
		$autoload_size      = 0;

		foreach ( $options as $opt ) {
			$all_opts ++;
			$opts_size = $opts_size + (int) $opt['size_bytes'];

			if ( 'yes' === $opt['autoload'] ) {
				$all_autoload ++;
				$autoload_size = $autoload_size + (int) $opt['size_bytes'];
			}
		}

		foreach ( $transients as $trans ) {
			if ( false !== stripos( $trans['option_name'], 'timeout' ) ) {
				$all_trans_timeouts ++;
			} else {
				$all_trans ++;
			}
			$trans_size = $trans_size + (int) $trans['size_bytes'];

			if ( 'yes' === $trans['autoload'] ) {
				$all_autoload ++;
				$autoload_size = $autoload_size + (int) $trans['size_bytes'];
			}
		}

		$total = $all_opts + $all_trans + $all_trans_timeouts;

		$response = array(
			array(
				'TYPE'  => 'OPTIONS',
				'COUNT' => $all_opts,
				'SIZE'  => size_format( $opts_size, 2 ),
			),
			array(
				'TYPE'  => 'TRANSIENTS',
				'COUNT' => $all_trans . ' (TIMEOUTS: ' . $all_trans_timeouts . ')',
				'SIZE'  => size_format( $trans_size, 2 ),
			),
			array(
				'TYPE'  => 'TOTAL',
				'COUNT' => $total,
				'SIZE'  => size_format( $opts_size + $trans_size, 2 ),
			),
			array(
				'TYPE'  => 'AUTOLOAD',
				'COUNT' => $all_autoload . ' (' . round( $all_autoload / $total * 100, 0 ) . '%)',
				'SIZE'  => size_format( $autoload_size, 2 ),
			),
			array(
				'TYPE'  => 'CRON EVENTS',
				'COUNT' => count( get_option( 'cron', array() ) ),
				'SIZE'  => '---',
			),
		);

		return $response;
	}

}
