<?php

declare(strict_types=1);

/**
 * Read-only analyzer for /var/log/nginx/skinbase-performance.log
 *
 * Usage:
 *   php scripts/analyze-http-performance.php --file=/var/log/nginx/skinbase-performance.log --since=24h --top=20 --host=skinbase.org
 */

use App\Support\Http\HttpPerformanceLogAnalyzer;
use App\Support\Http\HttpUriNormalizer;

require __DIR__.'/../vendor/autoload.php';

$options = [
    'file' => '/var/log/nginx/skinbase-performance.log',
    'since' => '24h',
    'min_requests' => 1,
    'top' => 20,
    'status' => null,
    'uri' => null,
    'host' => null,
    'slow_ms' => null,
];

foreach (array_slice($argv, 1) as $arg) {
    if (! str_starts_with($arg, '--')) {
        fwrite(STDERR, "Unknown argument: {$arg}\n");
        exit(2);
    }
    [$key, $value] = array_pad(explode('=', substr($arg, 2), 2), 2, '1');
    $map = [
        'file' => 'file',
        'since' => 'since',
        'min-requests' => 'min_requests',
        'top' => 'top',
        'status' => 'status',
        'uri' => 'uri',
        'host' => 'host',
        'slow-ms' => 'slow_ms',
    ];
    if (! isset($map[$key])) {
        fwrite(STDERR, "Unknown option: --{$key}\n");
        exit(2);
    }
    $options[$map[$key]] = $value;
}

$file = (string) $options['file'];
if (! is_readable($file)) {
    fwrite(STDERR, "Cannot read {$file}\n");
    exit(1);
}

$analyzer = new HttpPerformanceLogAnalyzer(new HttpUriNormalizer());
$result = $analyzer->analyze($file, [
    'since' => $options['since'],
    'min_requests' => (int) $options['min_requests'],
    'top' => (int) $options['top'],
    'status' => $options['status'],
    'uri' => $options['uri'],
    'host' => $options['host'],
    'slow_ms' => $options['slow_ms'] !== null ? (float) $options['slow_ms'] : null,
]);

echo json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES), PHP_EOL;