<?php

require 'classes/master.php'; //should be at top of every page

if (isset($_POST['args']) && !empty($_POST['args'])) {
    $input = JSON_decode($_POST['args']) or die("Invalid input!");
} else {
    die("No or invalid input!");
}

if (isset($input->uid) && $input->uid != null) {
    // This concerns an edit of an existing question, not creation of a new one.
    $question_results = Question::get(array("uid" => $input->uid));
    if (!empty($question_results)) {
        $question = $question_results[0];
    } else {
        die("Error: attempt to edit a non-existing database object!");
    }
    
    if ($input->answerType) $question->type = $input->answerType;
    if ($input->code) $question->code = $input->code;
    if ($input->title) $question->title = $input->title;
    if ($input->description) $question->description = $input->description;
    if (isset($input->category) ) $question->category = null;
    if (isset($input->answers)) $question->answers = null;
    $question->save();
    $outputArray = array("created"=>false, "uid"=>$question->uid);
    echo JSON_encode($outputArray);
}
else {
// Obviously, this call does not save most of the data entered into the question Editor, because the database has not place to store these values as of yet.
    $question = new Question(null, $input->code, $input->title, $input->answerType, $input->description, null, null);
    $question->save();
    $outputArray = array("created"=>true, "uid"=>$question->uid);
    echo JSON_encode($outputArray);
}
?>