<?php

declare(strict_types=1);

namespace App\Framework\ExceptionHandling\Metrics;

/**
 * Exception Metrics
 *
 * Immutable value object for exception metrics.
 */
final readonly class ExceptionMetrics
{
    /**
     * @param int $totalCount Total exception count
     * @param array<string, int> $byClass Count by exception class
     * @param array<string, int> $byComponent Count by component
     * @param float $averageExecutionTimeMs Average execution time in milliseconds
     */
    public function __construct(
        public int $totalCount = 0,
        public array $byClass = [],
        public array $byComponent = [],
        public float $averageExecutionTimeMs = 0.0
    ) {
    }

    /**
     * Convert to array for serialization
     *
     * @return array<string, mixed>
     */
    public function toArray(): array
    {
        return [
            'total_count' => $this->totalCount,
            'by_class' => $this->byClass,
            'by_component' => $this->byComponent,
            'average_execution_time_ms' => $this->averageExecutionTimeMs,
        ];
    }
}