<?php
// Start output buffering to capture any unintended output
ob_start();

// Enable error reporting for debugging (remove in production)
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

// Include the headscript file (ensure it doesn't output anything)
require_once('include/headscript.php');

// Establish database connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
if (!$conn) {
    ob_end_clean();
    header('Content-Type: application/json');
    echo json_encode(['error' => 'Connessione al database fallita']);
    exit;
}

// Check if id_utente is provided
if (isset($_POST['id_utente'])) {
    $id_utente = intval($_POST['id_utente']);
    
    // Query to fetch class details with necessary fields
    $sql = "
        SELECT 
            bc.idbookingclass,
            bc.bookingstart,
            bc.status,
            bc.lostlesson,
            bc.prevbookingstart,
            bc.idorder,
            ob.order_date_created,
            s.servicename,
            s.day,
            s.time
        FROM bookingclass bc
        LEFT JOIN orderbook ob ON bc.idorder = ob.idorderbook
        LEFT JOIN service s ON bc.idservice = s.idservice
        WHERE bc.iduser = $id_utente
        ORDER BY bc.bookingstart DESC
    ";
    
    $result = mysqli_query($conn, $sql);
    if (!$result) {
        ob_end_clean();
        header('Content-Type: application/json');
        echo json_encode(['error' => 'Errore nella query: ' . mysqli_error($conn)]);
        exit;
    }
    
    $classes = [];
    
    // Fetch all rows and store in an array
    while ($row = mysqli_fetch_assoc($result)) {
        $classes[] = $row;
    }
    
    // Clear the output buffer, set the header, and output JSON
    ob_end_clean();
    header('Content-Type: application/json');
    echo json_encode($classes);
    mysqli_close($conn);
    exit;
}

// If id_utente is not provided, return an error
ob_end_clean();
header('Content-Type: application/json');
echo json_encode(['error' => 'ID utente non fornito']);
mysqli_close($conn);
exit;
?>