<?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
        $hurricaneId = (int)$_GET['id'];
        $stmt = $pdo->prepare('SELECT name, year FROM hurricanes WHERE id = ?');
        $stmt->execute([$hurricaneId]);
        $hurricane = $stmt->fetch();

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

        $stmt = $pdo->prepare('SELECT lat, lon, wind_speed_mph FROM hurricane_tracks WHERE hurricane_id = ? ORDER BY timestamp ASC');
        $stmt->execute([$hurricaneId]);
        $trackData = $stmt->fetchAll();

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

        echo json_encode([
            'name' => $hurricane['name'] . ' (' . $hurricane['year'] . ')',
            'track' => $formattedTrack
        ]);

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

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