<?php
/**
 * Server Environment Fixer & Probe
 * This script helps diagnose and fix DB connection issues on the server.
 */

header('Content-Type: text/plain; charset=utf-8');

echo "=== Server Environment Probe ===\n";
echo "PHP Version: " . PHP_VERSION . "\n";
echo "Current Directory: " . __DIR__ . "\n";
echo "Hostname: " . gethostname() . "\n";

$envPath = __DIR__ . '/.env';
echo "Checking .env at: $envPath\n";

if (file_exists($envPath)) {
    echo ".env exists.\n";
    $content = file_get_contents($envPath);
    echo "--- .env Content (masked) ---\n";
    foreach (explode("\n", $content) as $line) {
        if (trim($line) === '') continue;
        if (strpos($line, 'DB_PASS') !== false) {
            echo "DB_PASS=********\n";
        } else {
            echo $line . "\n";
        }
    }
} else {
    echo ".env DOES NOT EXIST.\n";
}

echo "\n=== Database Connection Test ===\n";

$hosts_to_test = ['localhost', '127.0.0.1', 'mysql'];
$db_name = 'chandj';
$db_user = 'root'; // Usually 'root' or matches system user
$db_pass = 'root'; // Change as needed

foreach ($hosts_to_test as $host) {
    echo "Testing host [$host]... ";
    try {
        $dsn = "mysql:host=$host;dbname=$db_name;charset=utf8mb4";
        $pdo = new PDO($dsn, $db_user, $db_pass, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
        echo "SUCCESS!\n";
        
        if (isset($_GET['fix']) && $_GET['fix'] === 'true') {
            echo "Updating .env to use host [$host]...\n";
            $newEnv = "APP_URL=https://sales.sam.kr/\n";
            $newEnv .= "DB_HOST=$host\n";
            $newEnv .= "DB_NAME=$db_name\n";
            $newEnv .= "DB_USER=$db_user\n";
            $newEnv .= "DB_PASS=$db_pass\n";
            $newEnv .= "DOCUMENT_ROOT=" . str_replace('\\', '/', __DIR__) . "\n";
            
            if (file_put_contents($envPath, $newEnv)) {
                echo "Successfully wrote to .env\n";
            } else {
                echo "FAILED to write to .env. Check permissions.\n";
            }
        }
        break; 
    } catch (Exception $e) {
        echo "FAILED: " . $e->getMessage() . "\n";
    }
}

echo "\nUsage: Append ?fix=true to the URL to automatically create/update .env if a connection succeeds.\n";
echo "SECURITY: DELETE THIS FILE AFTER USE!\n";