<?php
require_once 'secrets.php';


$host = DB_HOST;
$db_name = DB_NAME;
$username = DB_USER;
$password = DB_PASS;

try {
    $pdo = new PDO("mysql:host=$host;dbname=$db_name;charset=utf8mb4", $username, $password, [
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
        PDO::ATTR_EMULATE_PREPARES => false,
    ]);

    $createTableSql = "
        CREATE TABLE IF NOT EXISTS codeData (
            id BIGINT PRIMARY KEY,
            data LONGTEXT NOT NULL
        ) ENGINE=InnoDB;
    ";
    $pdo->exec($createTableSql);

    // 3. Handle Request Methods
    $method = $_SERVER['REQUEST_METHOD'];

    if ($method === 'GET') {
        // --- READ LOGIC ---
        if (isset($_GET['id'])) {
            $id = (int) $_GET['id'];

            $stmt = $pdo->prepare("SELECT data FROM codeData WHERE id = ?");
            $stmt->execute([$id]);
            $row = $stmt->fetch();

            if ($row) {
                header('Content-Type: text/plain');
                echo $row['data'];
            } else {
                http_response_code(404);
                echo "Error: Record with ID $id not found.";
            }
        } else {
            http_response_code(400);
            echo "Error: Missing 'id' parameter in query string.";
        }

    } elseif ($method === 'POST') {
        // --- WRITE LOGIC ---
        // Get raw POST body
        $inputData = file_get_contents('php://input');

        if (!empty($inputData)) {
            $idGenerated = false;
            $newId = 0;

            // Generate a unique random ID and ensure it doesn't collide
            while (!$idGenerated) {
                $newId = mt_rand(100000, 999999999); // Range for the random ID

                // Check if ID exists
                $checkStmt = $pdo->prepare("SELECT id FROM codeData WHERE id = ?");
                $checkStmt->execute([$newId]);
                if (!$checkStmt->fetch()) {
                    $idGenerated = true;
                }
            }

            // Insert the new row
            $insertStmt = $pdo->prepare("INSERT INTO codeData (id, data) VALUES (?, ?)");
            $insertStmt->execute([$newId, $inputData]);

            header('Content-Type: application/json');
            echo json_encode(['id' => $newId, 'status' => 'success']);
        } else {
            http_response_code(400);
            echo "Error: POST body is empty.";
        }

    } else {
        // Unsupported Method
        http_response_code(405);
        echo "Error: Method $method not allowed.";
    }

} catch (PDOException $e) {
    // Handle connection or query errors
    http_response_code(500);
    echo "Database Error: " . $e->getMessage();
    exit;
}
?>