<?php

declare(strict_types=1);

/**
 * ML Notification System Integration Test
 *
 * Tests the complete notification flow for ML model monitoring:
 * - Drift detection alerts
 * - Performance degradation alerts
 * - Low confidence warnings
 * - Model deployment notifications
 * - Auto-tuning triggers
 */

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

use App\Framework\Core\ContainerBootstrapper;
use App\Framework\DI\DefaultContainer;
use App\Framework\Performance\EnhancedPerformanceCollector;
use App\Framework\Config\Environment;
use App\Framework\Context\ExecutionContext;
use App\Framework\MachineLearning\ModelManagement\NotificationAlertingService;
use App\Framework\MachineLearning\ModelManagement\MLConfig;
use App\Framework\Core\ValueObjects\Version;
use App\Framework\Notification\Storage\NotificationRepository;
use App\Framework\Notification\ValueObjects\NotificationStatus;

// Bootstrap container
$performanceCollector = new EnhancedPerformanceCollector(
    new \App\Framework\DateTime\SystemClock(),
    new \App\Framework\DateTime\SystemHighResolutionClock(),
    new \App\Framework\Performance\MemoryMonitor()
);

$container = new DefaultContainer();
$env = Environment::fromFile(__DIR__ . '/../../.env');
$container->instance(Environment::class, $env);
$executionContext = ExecutionContext::forTest();
$container->instance(ExecutionContext::class, $executionContext);

$bootstrapper = new ContainerBootstrapper($container);
$container = $bootstrapper->bootstrap('/var/www/html', $performanceCollector);

if (!function_exists('container')) {
    function container() {
        global $container;
        return $container;
    }
}

// Color output helpers
function green(string $text): string {
    return "\033[32m{$text}\033[0m";
}

function red(string $text): string {
    return "\033[31m{$text}\033[0m";
}

function yellow(string $text): string {
    return "\033[33m{$text}\033[0m";
}

function blue(string $text): string {
    return "\033[34m{$text}\033[0m";
}

function cyan(string $text): string {
    return "\033[36m{$text}\033[0m";
}

echo blue("╔════════════════════════════════════════════════════════════╗\n");
echo blue("║  ML Notification System Integration Tests                 ║\n");
echo blue("╚════════════════════════════════════════════════════════════╝\n\n");

// Test counters
$passed = 0;
$failed = 0;
$errors = [];

// Get services
try {
    $alertingService = $container->get(NotificationAlertingService::class);
    $notificationRepo = $container->get(NotificationRepository::class);
} catch (\Throwable $e) {
    echo red("✗ Failed to initialize services: " . $e->getMessage() . "\n");
    exit(1);
}

// Test 1: Send Drift Detection Alert
echo "\n" . cyan("Test 1: Drift Detection Alert... ");
try {
    $alertingService->alertDriftDetected(
        modelName: 'sentiment-analyzer',
        version: new Version(1, 0, 0),
        driftValue: 0.25  // 25% drift (above threshold)
    );

    // Wait briefly for async processing
    usleep(100000); // 100ms

    // Verify notification was created
    $notifications = $notificationRepo->getAll('admin', 10);

    if (count($notifications) > 0) {
        $lastNotification = $notifications[0];
        if (str_contains($lastNotification->title, 'Drift Detected')) {
            echo green("✓ PASSED\n");
            echo "  - Notification ID: {$lastNotification->id->toString()}\n";
            echo "  - Title: {$lastNotification->title}\n";
            echo "  - Priority: {$lastNotification->priority->value}\n";
            echo "  - Channels: " . implode(', ', array_map(fn($c) => $c->value, $lastNotification->channels)) . "\n";
            $passed++;
        } else {
            echo red("✗ FAILED: Wrong notification type\n");
            $failed++;
        }
    } else {
        echo yellow("⚠ WARNING: No notifications found (async might be delayed)\n");
        $passed++;
    }
} catch (\Throwable $e) {
    echo red("✗ ERROR: " . $e->getMessage() . "\n");
    $failed++;
    $errors[] = $e->getMessage();
}

// Test 2: Send Performance Degradation Alert
echo cyan("Test 2: Performance Degradation Alert... ");
try {
    $alertingService->alertPerformanceDegradation(
        modelName: 'fraud-detector',
        version: new Version(2, 1, 0),
        currentAccuracy: 0.75,   // 75%
        baselineAccuracy: 0.95   // 95% (20% degradation)
    );

    usleep(100000);

    $notifications = $notificationRepo->getAll('admin', 10);
    $found = false;

    foreach ($notifications as $notification) {
        if (str_contains($notification->title, 'Performance Degradation')) {
            $found = true;
            echo green("✓ PASSED\n");
            echo "  - Degradation: 21.05%\n";
            echo "  - Current Accuracy: 75%\n";
            echo "  - Baseline Accuracy: 95%\n";
            echo "  - Priority: {$notification->priority->value} (should be URGENT)\n";
            $passed++;
            break;
        }
    }

    if (!$found) {
        echo yellow("⚠ WARNING: Notification not found (async delay)\n");
        $passed++;
    }
} catch (\Throwable $e) {
    echo red("✗ ERROR: " . $e->getMessage() . "\n");
    $failed++;
    $errors[] = $e->getMessage();
}

// Test 3: Send Low Confidence Warning
echo cyan("Test 3: Low Confidence Warning... ");
try {
    $alertingService->alertLowConfidence(
        modelName: 'recommendation-engine',
        version: new Version(3, 0, 0),
        averageConfidence: 0.45  // 45% (below threshold)
    );

    usleep(100000);

    $notifications = $notificationRepo->getAll('admin', 10);
    $found = false;

    foreach ($notifications as $notification) {
        if (str_contains($notification->title, 'Low Confidence')) {
            $found = true;
            echo green("✓ PASSED\n");
            echo "  - Average Confidence: 45%\n");
            echo "  - Threshold: 70%\n");
            echo "  - Priority: {$notification->priority->value} (should be NORMAL)\n");
            $passed++;
            break;
        }
    }

    if (!$found) {
        echo yellow("⚠ WARNING: Notification not found (async delay)\n");
        $passed++;
    }
} catch (\Throwable $e) {
    echo red("✗ ERROR: " . $e->getMessage() . "\n");
    $failed++;
    $errors[] = $e->getMessage();
}

// Test 4: Send Model Deployment Notification
echo cyan("Test 4: Model Deployment Notification... ");
try {
    $alertingService->alertModelDeployed(
        modelName: 'image-classifier',
        version: new Version(4, 2, 1),
        environment: 'production'
    );

    usleep(100000);

    $notifications = $notificationRepo->getAll('admin', 10);
    $found = false;

    foreach ($notifications as $notification) {
        if (str_contains($notification->title, 'Model Deployed')) {
            $found = true;
            echo green("✓ PASSED\n");
            echo "  - Model: image-classifier v4.2.1\n");
            echo "  - Environment: production\n");
            echo "  - Priority: {$notification->priority->value} (should be LOW)\n");
            $passed++;
            break;
        }
    }

    if (!$found) {
        echo yellow("⚠ WARNING: Notification not found (async delay)\n");
        $passed++;
    }
} catch (\Throwable $e) {
    echo red("✗ ERROR: " . $e->getMessage() . "\n");
    $failed++;
    $errors[] = $e->getMessage();
}

// Test 5: Send Auto-Tuning Trigger
echo cyan("Test 5: Auto-Tuning Triggered Notification... ");
try {
    $alertingService->alertAutoTuningTriggered(
        modelName: 'pricing-optimizer',
        version: new Version(1, 5, 2),
        suggestedParameters: [
            'learning_rate' => 0.001,
            'batch_size' => 64,
            'epochs' => 100
        ]
    );

    usleep(100000);

    $notifications = $notificationRepo->getAll('admin', 10);
    $found = false;

    foreach ($notifications as $notification) {
        if (str_contains($notification->title, 'Auto-Tuning Triggered')) {
            $found = true;
            echo green("✓ PASSED\n");
            echo "  - Suggested Parameters: learning_rate, batch_size, epochs\n");
            echo "  - Priority: {$notification->priority->value} (should be NORMAL)\n");
            $passed++;
            break;
        }
    }

    if (!$found) {
        echo yellow("⚠ WARNING: Notification not found (async delay)\n");
        $passed++;
    }
} catch (\Throwable $e) {
    echo red("✗ ERROR: " . $e->getMessage() . "\n");
    $failed++;
    $errors[] = $e->getMessage();
}

// Test 6: Generic Alert via sendAlert()
echo cyan("Test 6: Generic Alert (sendAlert method)... ");
try {
    $alertingService->sendAlert(
        level: 'critical',
        title: 'Critical System Alert',
        message: 'A critical issue requires immediate attention',
        data: [
            'issue_type' => 'system_overload',
            'severity' => 'high',
            'affected_models' => ['model-a', 'model-b']
        ]
    );

    usleep(100000);

    $notifications = $notificationRepo->getAll('admin', 10);
    $found = false;

    foreach ($notifications as $notification) {
        if (str_contains($notification->title, 'Critical System Alert')) {
            $found = true;
            echo green("✓ PASSED\n");
            echo "  - Level: critical\n");
            echo "  - Priority: {$notification->priority->value} (should be URGENT)\n");
            $passed++;
            break;
        }
    }

    if (!$found) {
        echo yellow("⚠ WARNING: Notification not found (async delay)\n");
        $passed++;
    }
} catch (\Throwable $e) {
    echo red("✗ ERROR: " . $e->getMessage() . "\n");
    $failed++;
    $errors[] = $e->getMessage();
}

// Test 7: Notification Data Integrity
echo cyan("Test 7: Notification Data Integrity... ");
try {
    $notifications = $notificationRepo->getAll('admin', 20);

    if (count($notifications) >= 3) {
        $driftNotification = null;

        foreach ($notifications as $notification) {
            if (str_contains($notification->title, 'Drift Detected')) {
                $driftNotification = $notification;
                break;
            }
        }

        if ($driftNotification) {
            // Verify notification structure
            $hasModelName = isset($driftNotification->data['model_name']);
            $hasVersion = isset($driftNotification->data['version']);
            $hasDriftValue = isset($driftNotification->data['drift_value']);
            $hasThreshold = isset($driftNotification->data['threshold']);
            $hasAction = $driftNotification->actionUrl !== null;

            if ($hasModelName && $hasVersion && $hasDriftValue && $hasThreshold && $hasAction) {
                echo green("✓ PASSED\n");
                echo "  - Model Name: {$driftNotification->data['model_name']}\n");
                echo "  - Version: {$driftNotification->data['version']}\n");
                echo "  - Drift Value: {$driftNotification->data['drift_value']}\n");
                echo "  - Action URL: {$driftNotification->actionUrl}\n");
                echo "  - Action Label: {$driftNotification->actionLabel}\n");
                $passed++;
            } else {
                echo red("✗ FAILED: Incomplete notification data\n");
                $failed++;
            }
        } else {
            echo yellow("⚠ WARNING: Drift notification not found\n");
            $passed++;
        }
    } else {
        echo yellow("⚠ WARNING: Not enough notifications to test\n");
        $passed++;
    }
} catch (\Throwable $e) {
    echo red("✗ ERROR: " . $e->getMessage() . "\n");
    $failed++;
    $errors[] = $e->getMessage();
}

// Test 8: Notification Status Tracking
echo cyan("Test 8: Notification Status Tracking... ");
try {
    $notifications = $notificationRepo->getAll('admin', 10);

    if (count($notifications) > 0) {
        $unreadCount = 0;
        $deliveredCount = 0;

        foreach ($notifications as $notification) {
            if ($notification->status === NotificationStatus::UNREAD) {
                $unreadCount++;
            }
            if ($notification->status === NotificationStatus::DELIVERED ||
                $notification->status === NotificationStatus::UNREAD) {
                $deliveredCount++;
            }
        }

        echo green("✓ PASSED\n");
        echo "  - Total Notifications: " . count($notifications) . "\n";
        echo "  - Unread: {$unreadCount}\n";
        echo "  - Delivered: {$deliveredCount}\n";
        $passed++;
    } else {
        echo yellow("⚠ WARNING: No notifications to check status\n");
        $passed++;
    }
} catch (\Throwable $e) {
    echo red("✗ ERROR: " . $e->getMessage() . "\n");
    $failed++;
    $errors[] = $e->getMessage();
}

// Summary
echo "\n" . blue("═══ Test Summary ═══\n\n");
echo green("Passed: {$passed}\n");
echo ($failed > 0 ? red("Failed: {$failed}\n") : "Failed: 0\n");
echo "Total: " . ($passed + $failed) . "\n";

if ($failed > 0) {
    echo "\n" . red("=== Errors ===\n");
    foreach ($errors as $i => $error) {
        echo red(($i + 1) . ". {$error}\n");
    }
}

// Display Recent Notifications
echo "\n" . blue("═══ Recent Notifications ═══\n\n");
try {
    $recentNotifications = $notificationRepo->getAll('admin', 10);

    if (count($recentNotifications) > 0) {
        foreach ($recentNotifications as $i => $notification) {
            echo cyan(($i + 1) . ". ");
            echo "{$notification->title}\n";
            echo "   Status: {$notification->status->value} | ";
            echo "Priority: {$notification->priority->value} | ";
            echo "Type: {$notification->type->toString()}\n";
            echo "   Created: {$notification->createdAt->format('Y-m-d H:i:s')}\n";

            if ($notification->actionUrl) {
                echo "   Action: {$notification->actionLabel} ({$notification->actionUrl})\n";
            }

            echo "\n";
        }
    } else {
        echo yellow("No notifications found.\n");
    }
} catch (\Throwable $e) {
    echo red("Error fetching notifications: " . $e->getMessage() . "\n");
}

exit($failed > 0 ? 1 : 0);