<?
require_once("util/fns.inc");
require_once("html/study.inc");
require_once("html/comment.inc");
require_once ("dal/Basic_Exam.inc");
require_once("html/package.inc");

limited_access(6);

$show_pay_info = true;
$include_social = true;
$lock_copy = true;
//used for adding a comment. don't need to click show answer button again.
$show_answer = $_REQUEST['show'] == 'T';

$custom_js = get_show_answer_js();//for check answer and show comments.

$subid = $_REQUEST['subid'];//required.

if(!validate_id($subid) || !cross_level_check(3, $subid)) {
    show_restricted_access();//"Userid: " . $_SESSION['user']['id'] . ", Subid: $subid"
    exit;
}

$exam_guide_id = get_exam_guide_id_by_sub_id($subid);

set_up_exam_guide_id_for_guest($exam_guide_id);

$row = get_subject_info_from_subid($subid);

if($row['substatus'] == 1) {
    if(is_restricted_user()) {
        show_restricted_access();
        return;
    }
    else if (is_paid_user_qb()) {
        show_restricted_access();//temporary.
        //show_upgrade_access();
        return;
    }
}

increment_access_score(1);

//either 1 should exists, but not both.
$action = $_REQUEST['action'];//only available if starting the basic exam.
$id = $_REQUEST['id'];//bqid, optional

if(isset($id) && !is_numeric($id)) {//if it exists, it must be numeric.
    show_restricted_access();
    return;
}

//don't redirect when starting the exam.
if(!isset($action) && should_redirect_to_payment()) {
    print_package("basic_question.php?subid=$subid&id=$id");
    exit;
}

//1-start;
//insert into basic_user_assgnmt ONLY when checking answer:
if(isset($action) && ($action == 1)) {
    $exam = new Basic_Exam();
    $exam->initialize($subid);
    if($exam->get_number_of_questions() == 0) {
        show_restricted_access();
        return;
    }
    $_SESSION['user']['bqexam'] = $exam;
}

//now we should have exam object.
$user = $_SESSION['user'];

$exam = $user['bqexam'];

if(!$exam) {//first time machine visit
    
    $exam = new Basic_Exam();
    $exam->initialize($subid);
    if($exam->get_number_of_questions() == 0) {
        show_restricted_access("No basic question for subject $subid");
        return;
    }
    $_SESSION['user']['bqexam'] = $exam;
}

if(!isset($id) || $id == 0 || !is_numeric($id)) {
    $id = $exam->get_first_bqid();
}
$query = "select subid, value, answer from basic_question where bqid = " . $id;
$result = do_mysqli_query($query);
if(mysqli_num_rows($result) == 0) {
    show_restricted_access("No basic question for subject $subid");
    return;
}
$bq_row = mysqli_fetch_array($result);

//need to have the valid basic_question first, before adding comment or getting canonical_link.
if(isset($_REQUEST['comment'])) {
    add_user_comment($id, 2, $_REQUEST['comment']);
}

$canonical_link = get_canonical_link($id, 2);

//links:
$link_study_all = build_study_all_link();
$link_topic = build_topic_link_title($row['ssid']);
$link_module = build_module_link_title($row['rid']);
$link_subject = build_subject_link_title_from_subid($subid);

$show_los = can_show_los();

$year = $user['exam_year'];
$level_label = get_exam_name_for_user();

$los_result = do_mysqli_query("select l.value, l.notes from los_main l, los_subject ls where ls.losid = l.id and ls.subid = " . $subid);
if($los_row = mysqli_fetch_array($los_result)) {
    $los_value = $los_row['value'];
    $los_notes = "CFA&#0174; $level_label Curriculum, " . $los_row['notes'] . 
        ", Module " . $row['rnumber'] . ".";
}

if(is_logged_on()) {
    do_mysqli_query("insert ignore into basic_user_assgnmt (bqid, userId, subid) values (" . 
        $id . ", " . $user['id'] . ", $subid)");
}

$current_question_index = $exam->get_current_index_by_id($id);
$prevId = $exam->get_previous_questionid_by_id($id);
$nextId = $exam->get_next_questionid_by_id($id);

$tweeter_text = "CFA quiz question for " . $los_row['lvalue'] . " Topic " . $row['ssnumber'] . 
    ". Module " . $row['rnumber'] . ".";

$breadcrumb = array(array($link_study_all, $level_label),
    array($link_topic, "Topic " . $row['ssnumber'] . ". " . $row['ssvalue']),
    array($link_module, "Learning Module " . $row['rnumber'] . ". " . $row['rvalue']),
    array($link_subject, "Subject " . $row['subnumber'] . ". " . $row['subvalue']),
    array("", "Basic Question")
);

print_page_header("CFA Study Preparation", $canonical_link);

print_breadcrumb($breadcrumb);

print_container_start();

print_main_section_start();
print_basic_question_card();
print_section_end();
    
print_basic_question_side_column();

print_container_end();

print_footer();

function print_basic_question_side_column() {
    
    global $row, $show_los, $los_value, $los_notes;
    
    print_side_section_start();
    
    print_rotating_image();
    
    if(!is_cellphone()) {
        
        print_testimonial();
?>
    	<div class="card border-0 rounded-0 g-my-20">
          <div class="card-block u-info-v1-1 g-pa-0">
          <!--  <p class="lead"><strong></strong></p>
          <p class="lead"><strong>Module . </strong></p> -->
    <?
        if($show_los && isset($los_value) && !empty($los_value)) {
            echo "<p><strong>Learning Outcome Statements</strong></p>";
            echo "<p>" . cleanup_notes_html($los_value) . "</p>";
            echo "<p><em>$los_notes</em></p>";
        }
        else {
            echo "<p><strong>Subject " . $row['subnumber'] . ". " . $row['subvalue'] . 
            "</strong></p>";
        }
    }
?>      
      </div>
<?
    //don't show social buttons until show answer.
    print_social_button();
?>      
    </div>
<?
    print_side_section_end();
}

function print_los_info_for_cell() {
    
    global $row, $show_los, $los_value, $los_notes;
    if($show_los && isset($los_value) && !empty($los_value)) {
?>
	<div id=show_los style="display:none;" class="card border-0 rounded-0 g-pa-20">
      <div class="card-block u-info-v1-1 g-pa-0"><i>
      <p>LOS reference:</p>
<?
        echo "<p>" . cleanup_notes_html($los_value) . "</p>";
        echo "<p><em>$los_notes</em></p>";
    }
?>      
      </i></div>
    </div>
<?
}

function print_basic_question_card() {
    
    global $show_answer, $current_question_index, $id, $bq_row, $prevId, $nextId, $subid, $exam;
    
    $button_class = get_navi_button_class();
    
    print_card_start_with_header("Basic Question $current_question_index of " . $exam->get_number_of_questions(), "pencil-square-o");
    
    print_card_block(cleanup_notes_html($bq_row['value']));
?>    

    <div class="card-block u-info-v1-1 text-center">
<?
    $answer_style = "";
    if(!$show_answer) {
        $answer_style = "style=\"display:none;\" ";
?>    
      <a id=check_answer_link href=#/ class=""><i class="fa fa-wrench g-mr-3"></i>Check Answer</a>
<?
    }
    if($prevId > 0) {
?>
	  <a href=basic_question.php?subid=&id= class=""><i class="fa fa-chevron-left pr-10"></i> Previous Q</a>
<?
    }
    if($nextId > 0) {
        $tooltip = "data-toggle=\"tooltip\" title=\"next question\"";
        if(is_mobile()) {
            $tooltip = "";
        }
?>
      <a href=basic_question.php?subid=&id= class=""><i class="fa fa-chevron-right pr-10"></i> Next Q</a>
<?        
    }
    
    //less button for cell: simplify for cell.
    if(!is_cellphone()) {
        if(can_user_print()) {
            $printable = "JavaScript:scrollingPopupBig('print.php?id=$id&type=5')";
?>
    		<a href= class=""><i class="fa fa-print pr-10"></i> Print</a>
<?        
        }
        else {
?>
    		<a href=#/ class="" data-toggle=popover data-placement=top 
    		 data-trigger=hover data-content="