<?
/*
•	idPeriodo: identificador del periodo a consultar (obligatorio, número entero)
•	claveFacultad: clave de la facultad a consultar (opcional, cadena)
•	claveCarrera: clave de la carrera a consultar (opcional, cadena)
•	claveProfesor: clave del empleado a consultar (opcional, cadena)
•	fecha: fecha de la clase (opcional, cadena en formato yyyy-MM-dd)
 */
$required_params = [
    'idPeriodo'
];

$optional_params = [
    'claveFacultad',
    'claveCarrera',
    'claveProfesor',
    'fecha'
];

// Check if all required params are present in $_GET
$params = array_map('strtolower', $_GET); // Convert keys to lowercase for case-insensitive comparison

// Check for missing required parameters
$missing_params = array_diff($required_params, array_keys($params));
if (!empty($missing_params)) {
    $missing_params_str = implode(', ', $missing_params);
    die("Missing required parameter(s): $missing_params_str");
}

// Filter and retain only the required and optional parameters
$params = array_filter($params, function ($key) use ($required_params, $optional_params) {
    return in_array($key, $required_params) || in_array($key, $optional_params);
}, ARRAY_FILTER_USE_KEY);

$curl = curl_init();
curl_setopt_array($curl, [
    CURLOPT_URL => "https://portal.ulsa.edu.mx/servicios/AuditoriaAsistencialRest/AuditoriaAsistencialService.svc/auditoriaAsistencial/seleccionar",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => "",
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_CUSTOMREQUEST => "POST",
    CURLOPT_POSTFIELDS => json_encode($params),
    CURLOPT_HTTPHEADER => [
        "token: 64293fb86c06e45331ab9963822762f77b9c403ca949adcc31286d550e902fff202e4c69d1574b2082ecf0b3a28b6cfd4d88b3a7d2c2ab7d329666b9a527fb1b",
        "username: SGU_APSA_AUD_ASIST",
        "Content-Type: application/json"
    ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err)
    die("cURL Error #:$err");


$selectedData = json_decode($response, true);

$rawInput = file_get_contents('php://input');

$input = json_decode($rawInput, true);
// check for {collect: []} in raw input
if (isset($input['collect']) && is_array($input['collect'])) {
    $collect = $input['collect'];
    $selectedData = array_map(function ($item) use ($collect) {
        return array_intersect_key($item, array_flip($collect));
    }, $selectedData);
    // unique and distinct
    $selectedData = array_unique($selectedData, SORT_REGULAR);
}
else {
    // return invalid request error
    die($rawInput);
}

// Output the selected data directly
header('Content-Type: application/json');
echo json_encode($selectedData, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);