<?php

declare(strict_types=1);

namespace Tests\Framework\Health\ValueObjects;

use App\Framework\Core\ValueObjects\Duration;
use App\Framework\Health\ValueObjects\ResponseTime;
use App\Framework\Health\ValueObjects\ResponseTimeLevel;
use InvalidArgumentException;

describe('ResponseTime Value Object', function () {
    it('can be created from Duration', function () {
        $duration = Duration::fromMilliseconds(150);
        $responseTime = ResponseTime::fromDuration($duration);

        expect($responseTime->duration->toMilliseconds())->toBe(150.0);
    });

    it('can be created from seconds', function () {
        $responseTime = ResponseTime::fromSeconds(0.5);

        expect($responseTime->duration->toSeconds())->toBe(0.5);
        expect($responseTime->duration->toMilliseconds())->toBe(500.0);
    });

    it('can be created from milliseconds', function () {
        $responseTime = ResponseTime::fromMilliseconds(250);

        expect($responseTime->duration->toMilliseconds())->toBe(250.0);
    });

    it('can measure execution time', function () {
        $responseTime = ResponseTime::measure(function () {
            usleep(10000); // 10ms
        });

        expect($responseTime->duration->toMilliseconds())->toBeGreaterThan(5);
        expect($responseTime->duration->toMilliseconds())->toBeLessThan(50); // Allow some variance
    });

    it('can be created from start time', function () {
        $startTime = microtime(true);
        usleep(5000); // 5ms
        $responseTime = ResponseTime::fromStartTime($startTime);

        expect($responseTime->duration->toMilliseconds())->toBeGreaterThan(3);
        expect($responseTime->duration->toMilliseconds())->toBeLessThan(20);
    });

    it('creates zero response time', function () {
        $responseTime = ResponseTime::zero();

        expect($responseTime->duration->isZero())->toBeTrue();
        expect($responseTime->duration->toMilliseconds())->toBe(0.0);
    });

    it('classifies performance levels correctly', function () {
        $fast = ResponseTime::fromMilliseconds(50);
        $acceptable = ResponseTime::fromMilliseconds(300);
        $slow = ResponseTime::fromMilliseconds(1000);
        $verySlow = ResponseTime::fromMilliseconds(3000);

        expect($fast->isFast())->toBeTrue();
        expect($fast->getPerformanceLevel())->toBe(ResponseTimeLevel::FAST);

        expect($acceptable->isAcceptable())->toBeTrue();
        expect($acceptable->getPerformanceLevel())->toBe(ResponseTimeLevel::ACCEPTABLE);

        expect($slow->isSlow())->toBeTrue();
        expect($slow->getPerformanceLevel())->toBe(ResponseTimeLevel::SLOW);

        expect($verySlow->isVerySlow())->toBeTrue();
        expect($verySlow->getPerformanceLevel())->toBe(ResponseTimeLevel::VERY_SLOW);
    });

    it('checks threshold compliance', function () {
        $responseTime = ResponseTime::fromMilliseconds(300);
        $threshold = Duration::fromMilliseconds(500);
        $strictThreshold = Duration::fromMilliseconds(200);

        expect($responseTime->isWithinThreshold($threshold))->toBeTrue();
        expect($responseTime->exceedsThreshold($threshold))->toBeFalse();

        expect($responseTime->isWithinThreshold($strictThreshold))->toBeFalse();
        expect($responseTime->exceedsThreshold($strictThreshold))->toBeTrue();
    });

    it('compares response times correctly', function () {
        $fast = ResponseTime::fromMilliseconds(100);
        $slow = ResponseTime::fromMilliseconds(500);
        $same = ResponseTime::fromMilliseconds(100);

        expect($slow->isSlowerThan($fast))->toBeTrue();
        expect($fast->isFasterThan($slow))->toBeTrue();
        expect($fast->equals($same))->toBeTrue();
        expect($fast->equals($slow))->toBeFalse();
    });

    it('formats to string correctly', function () {
        $fast = ResponseTime::fromMilliseconds(50);
        $slow = ResponseTime::fromSeconds(2.5);

        expect($fast->toString())->toBe('50 ms');
        expect($slow->toString())->toBe('2.5 s');
        expect((string) $fast)->toBe('50 ms');
    });

    it('converts to array correctly', function () {
        $responseTime = ResponseTime::fromMilliseconds(750);
        $array = $responseTime->toArray();

        expect($array)->toHaveKey('milliseconds');
        expect($array)->toHaveKey('seconds');
        expect($array)->toHaveKey('formatted');
        expect($array)->toHaveKey('level');
        expect($array)->toHaveKey('is_fast');
        expect($array)->toHaveKey('is_acceptable');
        expect($array)->toHaveKey('is_slow');
        expect($array)->toHaveKey('is_very_slow');

        expect($array['milliseconds'])->toBe(750.0);
        expect($array['seconds'])->toBe(0.75);
        expect($array['level'])->toBe('slow');
        expect($array['is_slow'])->toBeTrue();
        expect($array['is_fast'])->toBeFalse();
    });

    it('throws exception for excessive response time', function () {
        $excessiveDuration = Duration::fromSeconds(400); // > 5 minutes

        expect(fn () => ResponseTime::fromDuration($excessiveDuration))
            ->toThrow(InvalidArgumentException::class);
    });

    it('allows response times up to 5 minutes', function () {
        $maxDuration = Duration::fromSeconds(300); // exactly 5 minutes
        $responseTime = ResponseTime::fromDuration($maxDuration);

        expect($responseTime->duration->toSeconds())->toBe(300.0);
        expect($responseTime->duration->toMilliseconds())->toBe(300000.0);
    });
});