<?php

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

use App\Core\Env;
use App\Core\Cache;
use App\Core\Database;
use App\Models\WhatsAppSession;

Env::load(__DIR__ . '/.env');

echo "====================================================\n";
echo "🧪 NABEH ROUND-ROBIN & REDIS CACHING TEST SUITE\n";
echo "====================================================\n\n";

// 1. Check Redis Connection
echo "1️⃣ Checking Redis Connection...\n";
$redisEnabled = Env::get('REDIS_ENABLED', false);
echo "   - REDIS_ENABLED setting: " . ($redisEnabled ? "ENABLED (true)" : "DISABLED (false)") . "\n";

$testKey = 'test_rr_' . time();
$setOk = Cache::set($testKey, ['test' => 'data', 'timestamp' => time()], 10);
$getVal = Cache::get($testKey);
Cache::delete($testKey);

if ($setOk && is_array($getVal) && isset($getVal['test'])) {
    echo "   - Redis Server Status: ✅ CONNECTED & OPERATIONAL\n\n";
} else {
    echo "   - Redis Server Status: ⚠️ DISCONNECTED (Using Database Fallback)\n\n";
}

// 2. Fetch Companies with Sessions
echo "2️⃣ Fetching WhatsApp Sessions from Database...\n";
$companies = Database::select("SELECT DISTINCT company_id FROM whatsapp_sessions ORDER BY company_id ASC");

if (empty($companies)) {
    echo "   - ⚠️ No WhatsApp sessions found in database.\n";
    exit;
}

foreach ($companies as $comp) {
    $companyId = (int)$comp['company_id'];
    echo "   ----------------------------------------------------\n";
    echo "   🏬 Testing Company ID: {$companyId}\n";
    
    // Clear cache first to test cold cache read
    WhatsAppSession::clearSessionsCache($companyId);
    
    $allSessions = WhatsAppSession::findAllByCompany($companyId);
    $connectedSessions = WhatsAppSession::getConnectedSessionsForCompany($companyId);
    
    echo "   - Total Configured Sessions: " . count($allSessions) . "\n";
    echo "   - Total Connected Sessions: "  . count($connectedSessions) . "\n";
    
    foreach ($allSessions as $s) {
        $statusIcon = ($s['status'] === 'connected') ? '🟢' : '🔴';
        echo "     [ID {$s['id']}] {$statusIcon} {$s['name']} ({$s['session_key']}) | Status: {$s['status']} | Phone: " . ($s['phone'] ?: 'N/A') . "\n";
    }
    
    echo "\n   3️⃣ Testing Round-Robin Selection (10 Requests Simulation)...\n";
    $history = [];
    for ($req = 1; $req <= 10; $req++) {
        $selected = WhatsAppSession::getRoundRobinSession($companyId);
        $name = $selected['name'] ?? 'N/A';
        $key = $selected['session_key'] ?? 'N/A';
        $status = $selected['status'] ?? 'N/A';
        $history[] = $key;
        echo "     Request #{$req} ➔ Selected Session: {$name} ({$key}) [Status: {$status}]\n";
    }
    
    // Verify Distribution Metrics
    $counts = array_count_values($history);
    echo "\n   📊 Distribution Summary:\n";
    foreach ($counts as $sessionKey => $count) {
        $pct = round(($count / 10) * 100, 1);
        echo "     - Session {$sessionKey}: {$count} times ({$pct}%)\n";
    }
    echo "   ----------------------------------------------------\n\n";
}

echo "====================================================\n";
echo "✅ TEST COMPLETED SUCCESSFULLY!\n";
echo "====================================================\n";