<?php
/**
 * WP-CLI commands, for agencies running Fixlight on many sites.
 *
 * @package Fixlight
 */

namespace Fixlight;

defined( 'ABSPATH' ) || exit;

/**
 * Check pages and report results from the command line.
 */
class Cli {

	/**
	 * Shows the site's score and the most important open issues.
	 *
	 * ## OPTIONS
	 *
	 * [--format=<format>]
	 * : table or json.
	 * ---
	 * default: table
	 * options:
	 *   - table
	 *   - json
	 * ---
	 *
	 * ## EXAMPLES
	 *
	 *     wp fixlight status
	 *     wp fixlight status --format=json
	 *
	 * @param array $args       Positional arguments.
	 * @param array $assoc_args Options.
	 */
	public function status( $args, $assoc_args ) {
		$summary = Store::summary();
		if ( isset( $assoc_args['format'] ) && 'json' === $assoc_args['format'] ) {
			unset( $summary['page_titles'], $summary['page_list'] );
			\WP_CLI::line( (string) wp_json_encode( $summary, JSON_PRETTY_PRINT ) );
			return;
		}
		if ( null === $summary['score_after'] ) {
			\WP_CLI::line( __( 'No pages checked yet. Run: wp fixlight scan', 'fixlight' ) );
			return;
		}
		/* translators: 1: score without Fixlight, 2: score with Fixlight, 3: pages checked. */
		\WP_CLI::line( sprintf( _n( 'Score: %1$d without Fixlight, %2$d with Fixlight (%3$d page).', 'Score: %1$d without Fixlight, %2$d with Fixlight (%3$d pages).', $summary['pages_scored'], 'fixlight' ), $summary['score_before'], $summary['score_after'], $summary['pages_scored'] ) );
		/* translators: 1: issues fixed, 2: issues left. */
		\WP_CLI::line( sprintf( __( 'Issues fixed automatically: %1$d. Issues that need you: %2$d.', 'fixlight' ), $summary['fixed'], $summary['remaining'] ) );
		$rows = array();
		foreach ( $summary['rules'] as $rule ) {
			$rows[] = array(
				'rule'   => $rule['rule'],
				'issue'  => $rule['title'],
				'impact' => $rule['impact'],
				'wcag'   => $rule['wcag'],
				'fixed'  => max( 0, $rule['before'] - $rule['after'] ),
				'left'   => $rule['after'],
				'pages'  => $rule['pages_after'],
			);
		}
		\WP_CLI\Utils\format_items( 'table', $rows, array( 'rule', 'issue', 'impact', 'wcag', 'fixed', 'left', 'pages' ) );
	}

	/**
	 * Checks every published page on this server (fixes off and on).
	 *
	 * ## EXAMPLES
	 *
	 *     wp fixlight scan
	 *
	 * @param array $args       Positional arguments.
	 * @param array $assoc_args Options.
	 */
	public function scan( $args, $assoc_args ) {
		$state    = Background::start( false );
		$progress = \WP_CLI\Utils\make_progress_bar( __( 'Checking pages', 'fixlight' ), $state['total'] );
		$done     = 0;
		do {
			$state = Background::run_chunk( 30, 10 );
			if ( ! empty( $state['busy'] ) ) {
				sleep( 3 ); // A background batch is running; wait for it.
			}
			for ( $i = $done; $i < $state['done']; $i++ ) {
				$progress->tick();
			}
			$done = $state['done'];
		} while ( $state['running'] );
		$progress->finish();
		if ( $state['errors'] ) {
			/* translators: %d: number of pages. */
			\WP_CLI::warning( sprintf( _n( '%d page could not be fetched. See the Overview screen for details.', '%d pages could not be fetched. See the Overview screen for details.', $state['errors'], 'fixlight' ), $state['errors'] ) );
		}
		$this->status( array(), array() );
	}

	/**
	 * Lists accessibility widgets (overlays) Fixlight knows on this site, and can deactivate their WordPress plugins.
	 *
	 * Only the widget's own plugin is deactivated; its subscription with the maker is not cancelled, and scripts
	 * pasted into the theme are only reported.
	 *
	 * ## OPTIONS
	 *
	 * [--deactivate]
	 * : Deactivate the plugins of the widgets found.
	 *
	 * [--yes]
	 * : Don't ask before deactivating.
	 *
	 * ## EXAMPLES
	 *
	 *     wp fixlight overlays
	 *     wp fixlight overlays --deactivate
	 *
	 * @param array $args       Positional arguments.
	 * @param array $assoc_args Options.
	 */
	public function overlays( $args, $assoc_args ) {
		Overlays::check_home();
		$found = Overlays::found();
		if ( ! $found ) {
			\WP_CLI::success( __( 'No accessibility widget Fixlight knows was found.', 'fixlight' ) );
			return;
		}
		$rows = array();
		foreach ( $found as $id => $vendor ) {
			$rows[] = array(
				'widget'  => $vendor['name'],
				'plugins' => $vendor['plugins'] ? implode( ', ', $vendor['plugins'] ) : '-',
				'script'  => $vendor['script'] ? __( 'on the home page, outside a plugin', 'fixlight' ) : '-',
				'guide'   => Overlays::GUIDE . $id . '/',
			);
		}
		\WP_CLI\Utils\format_items( 'table', $rows, array( 'widget', 'plugins', 'script', 'guide' ) );
		if ( empty( $assoc_args['deactivate'] ) ) {
			return;
		}
		$files = array();
		foreach ( $found as $vendor ) {
			$files = array_merge( $files, $vendor['plugins'] );
		}
		if ( ! $files ) {
			\WP_CLI::warning( __( 'No widget plugin to deactivate. Remove pasted scripts by hand; see the guide.', 'fixlight' ) );
			return;
		}
		/* translators: %s: plugin files. */
		\WP_CLI::confirm( sprintf( __( 'Deactivate %s? Subscriptions with the makers are not cancelled.', 'fixlight' ), implode( ', ', $files ) ), $assoc_args );
		deactivate_plugins( $files );
		Overlays::check_home();
		/* translators: %d: number of plugins. */
		\WP_CLI::success( sprintf( _n( 'Deactivated %d plugin.', 'Deactivated %d plugins.', count( $files ), 'fixlight' ), count( $files ) ) );
	}
}