<?php

declare(strict_types=1);

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

use App\Framework\ErrorAggregation\ErrorEvent;
use App\Framework\ErrorAggregation\ErrorPattern;
use App\Framework\ErrorAggregation\Storage\InMemoryErrorStorage;
use App\Framework\Queue\InMemoryQueue;
use App\Framework\Cache\Cache;
use App\Framework\Cache\CacheIdentifier;
use App\Framework\Cache\CacheItem;
use App\Framework\Cache\CacheKey;
use App\Framework\Cache\CacheResult;
use App\Framework\Core\ValueObjects\Duration;
use App\Framework\Core\ValueObjects\Timestamp;
use App\Framework\DateTime\Clock;
use App\Framework\Exception\Core\DatabaseErrorCode;
use App\Framework\Exception\FrameworkException;
use App\Framework\Exception\ExceptionContext;
use App\Framework\Exception\RequestContext;
use App\Framework\Exception\SystemContext;
use App\Framework\Exception\ErrorHandlerContext;

// Create test cache
$cache = new class implements Cache {
    private array $data = [];

    public function get(CacheIdentifier ...$identifiers): CacheResult
    {
        $hits = [];
        $misses = [];
        foreach ($identifiers as $identifier) {
            $key = $identifier->toString();
            if (isset($this->data[$key])) {
                $value = $this->data[$key];
                $hits[$key] = $value instanceof CacheItem ? $value->value : $value;
            } else {
                $misses[] = $key;
            }
        }
        return new CacheResult($hits, $misses);
    }

    public function set(CacheItem ...$items): bool
    {
        foreach ($items as $item) {
            $this->data[$item->key->toString()] = $item;
        }
        return true;
    }

    public function has(CacheIdentifier ...$identifiers): array { return []; }
    public function forget(CacheIdentifier ...$identifiers): bool { return true; }
    public function clear(): bool { $this->data = []; return true; }
    public function remember(CacheKey $key, callable $callback, ?Duration $ttl = null): CacheItem
    {
        $keyStr = $key->toString();
        if (isset($this->data[$keyStr])) {
            return $this->data[$keyStr];
        }
        $value = $callback();
        $item = CacheItem::forSetting($key, $value, $ttl);
        $this->data[$keyStr] = $item;
        return $item;
    }
};

// Create test clock
$clock = new class implements Clock {
    public function now(): \DateTimeImmutable { return new \DateTimeImmutable(); }
    public function fromTimestamp(Timestamp $timestamp): \DateTimeImmutable { return $timestamp->toDateTime(); }
    public function fromString(string $dateTime, ?string $format = null): \DateTimeImmutable { return new \DateTimeImmutable($dateTime); }
    public function today(): \DateTimeImmutable { return new \DateTimeImmutable('today'); }
    public function yesterday(): \DateTimeImmutable { return new \DateTimeImmutable('yesterday'); }
    public function tomorrow(): \DateTimeImmutable { return new \DateTimeImmutable('tomorrow'); }
    public function time(): Timestamp { return Timestamp::now(); }
};

echo "Creating components...\n";
$storage = new InMemoryErrorStorage();
$alertQueue = new InMemoryQueue();

// Create exception and context
$exception = FrameworkException::create(
    DatabaseErrorCode::QUERY_FAILED,
    'Test database query failed'
);

$exceptionContext = ExceptionContext::empty()
    ->withOperation('test_operation', 'TestComponent')
    ->withData([
        'test_key' => 'test_value',
        'original_exception' => $exception,
        'exception_message' => $exception->getMessage()
    ]);

$requestContext = RequestContext::fromGlobals();
$systemContext = SystemContext::current();

$errorHandlerContext = ErrorHandlerContext::create(
    $exceptionContext,
    $requestContext,
    $systemContext,
    ['http_status' => 500]
);

echo "Creating ErrorEvent...\n";
$errorEvent = ErrorEvent::fromErrorHandlerContext($errorHandlerContext, $clock);
echo "  Event fingerprint: " . $errorEvent->getFingerprint() . "\n";

echo "\nManually simulating updateErrorPattern logic...\n";

$fingerprint = $errorEvent->getFingerprint();
$cacheKey = "error_pattern:" . $fingerprint;

echo "1. Checking cache for key: {$cacheKey}\n";
$cacheResult = $cache->get(CacheKey::fromString($cacheKey));
if ($cacheResult->isHit()) {
    echo "   Cache HIT - pattern exists in cache\n";
    $pattern = ErrorPattern::fromArray($cacheResult->hits[$cacheKey]);
} else {
    echo "   Cache MISS - checking storage\n";

    echo "2. Checking storage for fingerprint: {$fingerprint}\n";
    $pattern = $storage->getPatternByFingerprint($fingerprint);

    if ($pattern === null) {
        echo "   No pattern in storage - creating new one\n";

        echo "3. Creating new pattern from event...\n";
        try {
            $pattern = ErrorPattern::fromErrorEvent($errorEvent, $clock);
            echo "   Pattern created successfully! ID: " . (string) $pattern->id . "\n";
        } catch (\Throwable $e) {
            echo "   ERROR creating pattern: " . $e->getMessage() . "\n";
            echo "   Exception: " . get_class($e) . "\n";
            exit(1);
        }
    } else {
        echo "   Pattern found in storage - updating\n";
        $pattern = $pattern->withNewOccurrence($errorEvent);
    }
}

echo "4. Storing pattern...\n";
try {
    $storage->storePattern($pattern);
    echo "   Pattern stored successfully\n";
} catch (\Throwable $e) {
    echo "   ERROR storing pattern: " . $e->getMessage() . "\n";
    echo "   Exception: " . get_class($e) . "\n";
    exit(1);
}

echo "5. Caching pattern...\n";
try {
    $cacheItem = CacheItem::forSetting(
        CacheKey::fromString($cacheKey),
        $pattern->toArray(),
        Duration::fromSeconds(3600)
    );
    $cache->set($cacheItem);
    echo "   Pattern cached successfully\n";
} catch (\Throwable $e) {
    echo "   ERROR caching pattern: " . $e->getMessage() . "\n";
    echo "   Exception: " . get_class($e) . "\n";
    exit(1);
}

echo "\n6. Verifying pattern is retrievable...\n";
$activePatterns = $storage->getActivePatterns(10);
echo "   Active patterns count: " . count($activePatterns) . "\n";

if (count($activePatterns) > 0) {
    echo "\n✓ SUCCESS: Pattern creation flow works!\n";
} else {
    echo "\n✗ ERROR: Pattern was stored but not retrieved\n";
}