<?php
require_once __DIR__ . '/../db/config.php';

header('Content-Type: application/json');

try {
    $pdo = db();

    if (isset($_GET['id'])) {
        // Fetch track for a specific hurricane
        $hurricaneId = $_GET['id'];
        $stmt = $pdo->prepare('SELECT name, season, lat, lon, wind_speed FROM hurricanes WHERE storm_id = ? ORDER BY iso_time ASC');
        $stmt->execute([$hurricaneId]);
        $trackData = $stmt->fetchAll(PDO::FETCH_ASSOC);

        if (!$trackData) {
            http_response_code(404);
            echo json_encode(['error' => 'Hurricane not found']);
            exit;
        }

        // Format for existing frontend: [lon, lat, wind]
        $formattedTrack = array_map(function($point) {
            return [(float)$point['lon'], (float)$point['lat'], (int)$point['wind_speed']];
        }, $trackData);

        echo json_encode([
            'name' => $trackData[0]['name'] . ' (' . $trackData[0]['season'] . ')',
            'track' => $formattedTrack
        ]);

    } else {
        // Fetch list of all hurricanes
        $stmt = $pdo->query('SELECT storm_id as id, name, season as year FROM hurricanes GROUP BY storm_id, name, season ORDER BY season DESC, name ASC');
        $hurricanes = $stmt->fetchAll(PDO::FETCH_ASSOC);
        echo json_encode($hurricanes);
    }

} catch (PDOException $e) {
    http_response_code(500);
    echo json_encode(['error' => 'Database error: ' . $e->getMessage()]);
}
?>