<?php
/** Turns a scan job into per-component verdicts: ready, notices, update, report, replace, custom, failed or pending. */

namespace Leaplens;

defined( 'ABSPATH' ) || exit;

final class Report {

	const STALE_YEARS = 2;

	public static function rows( array $job ) {
		$checks = array();
		foreach ( $job['components'] as $c ) {
			if ( 'update' === $c['type'] ) {
				$checks[ $c['of'] ] = $c;
			}
		}
		$rows = array();
		foreach ( $job['components'] as $c ) {
			if ( 'update' === $c['type'] ) {
				continue;
			}
			$check  = isset( $checks[ $c['key'] ] ) ? $checks[ $c['key'] ] : null;
			$usable = Scan::usable_update( $c, $job['target'] );
			$update = $usable ? array(
				'version'      => $usable['version'],
				'checked'      => $check && 'done' === $check['status'] && '' === $check['error'] && 0 === $check['nfailed'] + $check['nskipped'],
				'errors'       => $check ? $check['errors'] : 0,
				'error'        => $check ? $check['error'] : '',
				'requires_php' => $usable['requires_php'],
				'after_switch' => '' !== $usable['requires_php'] && version_compare( $usable['requires_php'], $job['baseline'], '>' ),
			) : null;
			$rows[] = array(
				'key'       => $c['key'],
				'type'      => $c['type'],
				'name'      => $c['name'],
				'version'   => $c['version'],
				'active'    => $c['active'],
				'status'    => $c['status'],
				'files'     => $c['files'],
				'done'      => $c['done'],
				'errors'    => $c['errors'],
				'warnings'  => $c['warnings'],
				'existing'  => $c['existing'],
				'guarded'   => isset( $c['guarded'] ) ? $c['guarded'] : 0,
				'skipped'   => $c['nskipped'],
				'failed'    => $c['nfailed'],
				'error'     => $c['error'],
				'update'    => $update,
				'directory' => $c['directory'],
				'verdict'   => self::verdict( $c, $update ),
			);
		}
		return $rows;
	}

	private static function verdict( array $c, $update ) {
		if ( 'done' !== $c['status'] ) {
			return 'pending';
		}
		if ( '' !== $c['error'] || ( $c['done'] > 0 && $c['nfailed'] + $c['nskipped'] >= $c['done'] ) ) {
			return 'failed';
		}
		if ( 0 === $c['errors'] ) {
			return 0 === $c['warnings'] ? 'ready' : 'notices';
		}
		if ( $update && ! ( $update['checked'] && $update['errors'] > 0 ) ) {
			return 'update';
		}
		$dir = $c['directory'];
		if ( is_array( $dir ) && ! $dir['found'] ) {
			return 'custom';
		}
		if ( is_array( $dir ) && ( $dir['closed'] || ( '' !== $dir['last_updated'] && strtotime( $dir['last_updated'] ) < strtotime( '-' . self::STALE_YEARS . ' years' ) ) ) ) {
			return 'replace';
		}
		return false === $c['wporg'] ? 'custom' : 'report';
	}

	public static function summary( array $rows ) {
		$out = array(
			'total'    => count( $rows ),
			'blocking' => 0,
			'notices'  => 0,
			'ready'    => 0,
			'failed'   => 0,
			'pending'  => 0,
		);
		foreach ( $rows as $r ) {
			if ( 'pending' === $r['verdict'] ) {
				++$out['pending'];
			} elseif ( 'failed' === $r['verdict'] ) {
				++$out['failed'];
			} elseif ( $r['errors'] > 0 ) {
				++$out['blocking'];
			} elseif ( 'notices' === $r['verdict'] ) {
				++$out['notices'];
			} else {
				++$out['ready'];
			}
		}
		return $out;
	}
}