<?php

/**
 * Performance report for PHP_CodeSniffer.
 *
 * @author    Juliette Reinders Folmer <phpcs_nospam@adviesenzo.nl>
 * @copyright 2023 Juliette Reinders Folmer. All rights reserved.
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 */
namespace PHP_CodeSniffer\Reports;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Util\Common;
use PHP_CodeSniffer\Util\Timing;
class Performance implements \PHP_CodeSniffer\Reports\Report
{
    /**
     * Generate a partial report for a single processed file.
     *
     * Function should return TRUE if it printed or stored data about the file
     * and FALSE if it ignored the file. Returning TRUE indicates that the file and
     * its data should be counted in the grand totals.
     *
     * @param array<string, string|int|array> $report      Prepared report data.
     *                                                     See the {@see Report} interface for a detailed specification.
     * @param \PHP_CodeSniffer\Files\File     $phpcsFile   The file being reported on.
     * @param bool                            $showSources Show sources?
     * @param int                             $width       Maximum allowed line width.
     *
     * @return bool
     */
    public function generateFileReport($report, File $phpcsFile, $showSources = \false, $width = 80)
    {
        $times = $phpcsFile->getListenerTimes();
        foreach ($times as $sniff => $time) {
            echo "{$sniff}>>{$time}" . \PHP_EOL;
        }
        return \true;
    }
    //end generateFileReport()
    /**
     * Prints the sniff performance report.
     *
     * @param string $cachedData    Any partial report data that was returned from
     *                              generateFileReport during the run.
     * @param int    $totalFiles    Total number of files processed during the run.
     * @param int    $totalErrors   Total number of errors found during the run.
     * @param int    $totalWarnings Total number of warnings found during the run.
     * @param int    $totalFixable  Total number of problems that can be fixed.
     * @param bool   $showSources   Show sources?
     * @param int    $width         Maximum allowed line width.
     * @param bool   $interactive   Are we running in interactive mode?
     * @param bool   $toScreen      Is the report being printed to screen?
     *
     * @return void
     */
    public function generate($cachedData, $totalFiles, $totalErrors, $totalWarnings, $totalFixable, $showSources = \false, $width = 80, $interactive = \false, $toScreen = \true)
    {
        $lines = \explode(\PHP_EOL, $cachedData);
        \array_pop($lines);
        if (empty($lines) === \true) {
            return;
        }
        // First collect the accumulated timings.
        $timings = [];
        $totalSniffTime = 0;
        foreach ($lines as $line) {
            $parts = \explode('>>', $line);
            $sniffClass = $parts[0];
            $time = $parts[1];
            if (isset($timings[$sniffClass]) === \false) {
                $timings[$sniffClass] = 0;
            }
            $timings[$sniffClass] += $time;
            $totalSniffTime += $time;
        }
        // Next, tidy up the sniff names and determine max needed column width.
        $totalTimes = [];
        $maxNameWidth = 0;
        foreach ($timings as $sniffClass => $secs) {
            $sniffCode = Common::getSniffCode($sniffClass);
            $maxNameWidth = \max($maxNameWidth, \strlen($sniffCode));
            $totalTimes[$sniffCode] = $secs;
        }
        // Leading space + up to 12 chars for the number.
        $maxTimeWidth = 13;
        // Leading space, open parenthesis, up to 5 chars for the number, space + % and close parenthesis.
        $maxPercWidth = 10;
        // Calculate the maximum width available for the sniff name.
        $maxNameWidth = \min($width - $maxTimeWidth - $maxPercWidth, \max($width - $maxTimeWidth - $maxPercWidth, $maxNameWidth));
        \arsort($totalTimes);
        echo \PHP_EOL . "\x1b[1m" . 'PHP CODE SNIFFER SNIFF PERFORMANCE REPORT' . "\x1b[0m" . \PHP_EOL;
        echo \str_repeat('-', $width) . \PHP_EOL;
        echo "\x1b[1m" . 'SNIFF' . \str_repeat(' ', $width - 31) . 'TIME TAKEN (SECS)     (%)' . "\x1b[0m" . \PHP_EOL;
        echo \str_repeat('-', $width) . \PHP_EOL;
        // Mark sniffs which take more than twice as long as the average processing time per sniff
        // in orange and when they take more than three times as long as the average,
        // mark them in red.
        $avgSniffTime = $totalSniffTime / \count($totalTimes);
        $doubleAvgSniffTime = 2 * $avgSniffTime;
        $tripleAvgSniffTime = 3 * $avgSniffTime;
        $format = "%- {$maxNameWidth}.{$maxNameWidth}s % 12.6f (% 5.1f %%)" . \PHP_EOL;
        $formatBold = "\x1b[1m%- {$maxNameWidth}.{$maxNameWidth}s % 12.6f (% 5.1f %%)\x1b[0m" . \PHP_EOL;
        $formatWarning = "%- {$maxNameWidth}.{$maxNameWidth}s \x1b[33m% 12.6f (% 5.1f %%)\x1b[0m" . \PHP_EOL;
        $formatError = "%- {$maxNameWidth}.{$maxNameWidth}s \x1b[31m% 12.6f (% 5.1f %%)\x1b[0m" . \PHP_EOL;
        foreach ($totalTimes as $sniff => $time) {
            $percent = \round($time / $totalSniffTime * 100, 1);
            if ($time > $tripleAvgSniffTime) {
                \printf($formatError, $sniff, $time, $percent);
            } else {
                if ($time > $doubleAvgSniffTime) {
                    \printf($formatWarning, $sniff, $time, $percent);
                } else {
                    \printf($format, $sniff, $time, $percent);
                }
            }
        }
        echo \str_repeat('-', $width) . \PHP_EOL;
        \printf($formatBold, 'TOTAL SNIFF PROCESSING TIME', $totalSniffTime, 100);
        $runTime = Timing::getDuration() / 1000;
        $phpcsTime = $runTime - $totalSniffTime;
        echo \PHP_EOL . \str_repeat('-', $width) . \PHP_EOL;
        \printf($format, 'Time taken by sniffs', $totalSniffTime, \round($totalSniffTime / $runTime * 100, 1));
        \printf($format, 'Time taken by PHPCS runner', $phpcsTime, \round($phpcsTime / $runTime * 100, 1));
        echo \str_repeat('-', $width) . \PHP_EOL;
        \printf($formatBold, 'TOTAL RUN TIME', $runTime, 100);
        echo \str_repeat('-', $width) . \PHP_EOL;
    }
    //end generate()
}
//end class
