<?
require_once("util/fns.inc");
require_once("html/study.inc");

$show_pay_info = true;

//if visiting old_reading, ok. otherwise still limited_access.
//limited_access(5);2 steps.
//used to show all bookmarked subjects. Simplified.
pre_check();//limited_access: step 1 - session, db connect.

$dbo = db_connect_dbo();

$exam_guide_id = get_user_exam_guide_id();

if(isset($_REQUEST['id'])) {
    $id = $_REQUEST['id'];
}
else if (isset($_REQUEST['module_link'])) {
    $rid_clause = get_module_id_clause();//rid range
    $query = "select rid as id from reading where link = ? " . $rid_clause;
    
    $id = get_study_id_by_link_dbo($query, $_REQUEST['module_link']);
    
    if($id == 0 && is_guest()) {
        $query = "select rid as id from reading where link = ?";
        $id = get_study_id_by_link_dbo($query, $_REQUEST['module_link']);
    }
    
    if($id == 0) {
        $query = "select rid as id from old_reading where link = ?";
        $id = get_study_id_by_link_dbo($query, $_REQUEST['module_link']);
    }
}

if(!is_numeric($id)) {
    show_user_error();
    exit;
}
$id = intval($id);

if($id > 500) {
    show_old_reading($id);
    exit;
}

//limited_access: step 2
if(!can_access_member_page(5)) {
    exit;
}

//restricted access:
if(!validate_id($id) || !cross_level_check(2, $id)) {
    $msg = "";
    if(is_logged_on()) {
        $msg = "User cannot access module $id. Exam Guide ID: " . $_SESSION['user']['exam_guide_id'];
    }
    
    show_user_error("", $msg);
    exit;
}

$custom_js = get_learning_module_jquery_js($id);

if(is_guest()) {
    $exam_guide_id = get_exam_guide_id_by_reading_id($id);
    set_up_exam_guide_id_for_guest($exam_guide_id);
}

$query = "select ss.ssid as ssid, ss.number as ssnumber, ss.value as ssvalue, r.rid as rid,
          r.ssid as rssid, r.number as rnumber, r.value as rvalue, r.status as rstatus " .
          "from study_session ss, reading r where r.rid= $id and ss.ssid = r.ssid";
          
$result = do_mysqli_query($query);
if(mysqli_num_rows($result) == 0) {
  show_restricted_access("no module for rid " . $id);
  exit;
}

$rrow = mysqli_fetch_array($result);

$reading_status = $rrow['rstatus'];

//Consistent with session.inc
//unless the user manipulate the url param, it should not get here.
//don't show the module link to: the module is 'not ready' (status = 3), and the user is paid.
//for other users, show all subjects to lure them.
if($reading_status == 3 && is_paid_user()) {
  show_restricted_access("module not ready yet: $id");
  exit;
}

//get complete and bookmarked subjects: one query instead of one subject per query!
$completeids = array();
$bookmarkids = array();
$my_reading_status = 0;

if(is_logged_on()) {
  
  $my_reading_status = get_notes_status($id, 2);
  
  $query = "select sua.subid, sua.status, bookmark from sub_user_assgnmt sua, subject sub where sua.subid = sub.subid " .
      "and sub.rid = " . $id . " and (sua.status != 0 or sua.bookmark != 0) and sua.userId = " . $_SESSION['user']['id'];
  
  $result = do_mysqli_query($query);
  $count = mysqli_num_rows($result);
  $completecount = 0; $bookmarkcount = 0;
  //the real complete:bookmark ratio = 25:1. focus on complete.
  for($i=0; $i<$count; $i++) {
      $rowsua = mysqli_fetch_array($result);
      if($rowsua['status'] == 1) {
          $completeids[$completecount++] = $rowsua['subid'];
      }
      if($rowsua['bookmark'] == 1) {
          $bookmarkids[$bookmarkcount++] = $rowsua['subid'];
      }
  }
}

$exam_name = get_exam_name_for_user();

$link_study_all = build_study_all_link();
$link_topic = build_topic_link_title($rrow['ssid']);
$link_module = build_module_link_title($id);

$private_note = get_private_note($id, 1);

$breadcrumb = array(array($link_study_all, "$exam_name"),
    array($link_topic, "Topic " . $rrow['ssnumber'] . ". " . $rrow['ssvalue']),
    array("", "Learning Module " . $rrow['rnumber'] . ". " . $rrow['rvalue']));

print_page_header("Topic " . $rrow['ssnumber'] . ". " . $rrow['ssvalue'] . " - Learning Module " . $rrow['rnumber'] . ". " . $rrow['rvalue'], $link_module);

print_breadcrumb($breadcrumb);

print_container_start();

print_main_section_start();

print_subject_list_card();

print_section_end();

//side
print_side_section_start();

print_rotating_image();

print_testimonial();

print_flashcard_box(1);

print_reading_action_links();

print_side_section_end();

print_container_end();

print_footer();

//the underlying link is the same. just the list shown is sujects, not los.
function print_subject_list_card() {
    
    global $rrow, $show_pay_info;
    
    $rssid = $rrow['rssid'];
    $id = $rrow['rid'];
    if(!validate_id($id)) {
        return;
    }
    
    $subids = array();
    
    //special: ethics readings (don't show los repeatly) or CFAI visits.
    $show_los = show_los_for_reading($id) && can_show_los();
    
    print_card_start();
?>
    <h5 class="card-header d-flex justify-content-between align-items-center h5 g-color-gray-dark-v1 mb-0">
    <span class="d-block g-mr-10"><i class="fa fa-bars g-mr-5"></i> Learning Outcome Statements</span>
<?
    if(!is_paid_user()) {
?>    
    <a href="#pdf" class="btn btn-xs u-btn-primary g-mr-10" data-toggle="modal">
  	<i class="fa fa-download"></i> PDF Download
	</a>
<?
    }
?>	
    </h5>
<?    
    
    if($rrow['rstatus'] == 3) {
        show_los_list_for_not_ready_reading($rrow['rid']);
        print_card_end();
        return $subids; 
    }
    
    print_study_table_start();
    $query = "select subid, number, value, status from subject where rid = ". $id . " order by number";
    $result = do_mysqli_query($query);
    $count = mysqli_num_rows($result);
    
    for($i=0; $i<$count; $i++) {
        
        $row = mysqli_fetch_array($result);
        
        $subids[$i] = $row['subid'];
        
        print_value_per_status($show_los, $row);
    }
    
    print_study_table_end();
    
    print_card_end();
    
    return $subids;
}

function print_reading_action_links() {
    
    global $rrow, $my_reading_status, $private_note;
    
    $id = $rrow['rid'];
    
    $title_flashcard = "Add my flashcard";
    if($private_note) {
        $title_flashcard = "Edit my flashcard";
    }
    
    print_card_start_with_header("Actions");
?>      
      <ul class="list-unstyled g-font-size-13 mb-0">
<?
    if(is_guest()) {
        
        print_study_button_for_modal("pdf", "download", "PDF Download");
        print_study_button_for_modal("print", "print", "Print module notes");
        print_study_button_link("", "Mark this module complete once you log in.", "check", "Mark as complete");
        print_study_button_link("", "Log in to make my own flashcard for this module.", "film", $title_flashcard);
        print_study_button_for_modal("print", "print", "Print quiz questions");
    }
    else {
        //removed is_cellphone. show the links. simply don't let unpaid users to print the entire module.
        if(is_paid_user_full()) {//unpaid user can print a few pages here, as long as there's still room.
            $printable = "JavaScript:scrollingPopupBig('print.php?id=$id&type=1')";
            $printableBasics = "JavaScript:scrollingPopupBig('print.php?id=$id&type=3')";
            
            print_study_button_link($printable,  "Print out study notes for module " . $rrow['rnumber'], "print", "Print module notes");
            
            print_study_button_link($printableBasics, "Print out all basic questions for module " . $rrow['rnumber'], "print", "Print Questions");
        }
        else {
            print_study_button_for_modal("pdf", "download", "PDF Download");
            print_study_button_for_modal("print", "print", "Print module notes");
            print_study_button_for_modal("print", "print", "Print quiz questions");
        }
        
        //to mark it incomplete, need to go the session level, or unmark a los. 
        //Simplify: don't bother to add a unmark button. or mark all subjects.
        if($my_reading_status == 0) {//"Module marked complete",
            print_study_button_js_id("complete_button", "Mark this module as complete", "check", "Mark as complete");
            print_study_button_js_id("incomplete_button", "Remove this module from complete list", "times", "Mark as incomplete", false);
        }
        else {
            print_study_button_js_id("complete_button", "Mark this subject as complete", "check", "Mark as complete", false);
            print_study_button_js_id("incomplete_button", "Remove this subject from complete list", "times", "Mark as incomplete");
        }
        
        print_study_button_for_modal("modal-add-note", "film", $title_flashcard);
    }
?>
      </ul>
<?
    print_module_action_msgs();
    
    print_card_end();
    
    //don't show this to paid users before pdf is implemented. ask them to print and save pdf.
    if(!is_paid_user()) {
        $msg_pdf = "Download study notes in a PDF file immediately.";
        print_modal_for_payment("pdf", $msg_pdf);
    }
    
    if(!can_user_print()) {
        print_modal_for_payment("print", get_disabled_print_msg());
    }
    
    print_private_note_modal($id, 11, $private_note);
}

function print_value_per_status($can_show_los, $row) {
    
    global $completeids, $bookmarkids;
    
    $value = $row['number'] . ". " . cleanup_notes_html($row['value']);
     
    if(!validate_id($row['subid'])) {
        return;
    }
    
    $blocked = (is_restricted_user() && $row['status'] != 2);
    $available = $row['status'] != 3;
    
    $link_subject = build_subject_link_title_from_subid($row['subid']);
    
    echo "<tr><td>";
    
    if(is_logged_on()) {
                
        if($blocked) {
            echo "<a class=nav-link data-toggle=popover data-placement=left data-trigger=hover 
                data-content=\"Restricted access. Paid users only.\"><img src='images/icon_lock.gif'></a>";
        }
        else if($available) {
            
            if(in_array($row['subid'], $completeids)) {
                $desc = 'Mark this LOS as incomplete';
                $image = 'checked.gif';
            }
            else {
                $desc = 'Mark this LOS as complete';
                $image = 'unchecked.gif';
            }
            echo "<a id='c_" . $row['subid'] . "' href='#/' class=nav-link data-toggle=popover data-placement=left data-trigger=hover
                data-content=\"" . $desc . "\"><img id=img_" . $row['subid'] . " src='images/" . $image . 
                "' alt='" . $desc . "'></a>";
        }
        else {//not available for paid or logged on trial users.
            echo "<a class=nav-link data-toggle=popover data-placement=left data-trigger=hover
                data-content=\"Not available yet.\"><img src='images/icon_lock.gif'></a>";
        }
    }
    else {//guest
        echo "<a class=nav-link data-toggle=popover data-placement=left data-trigger=hover
                data-content=\"Log in to mark this LOS as complete.\"><i class=\"fa fa-square-o\"></i></a>";
    }
    
    echo "</td><td class=\"hidden-sm\">";
    
    if(!$blocked && $available) {
        echo "<a href=$link_subject class=\"text-success g-mr-15\">$value</a>";
        if(in_array($row['subid'], $bookmarkids)) {
            echo " <a href=# data-toggle=popover data-placement=right data-trigger=hover
                data-content=\"LOS bookmarked\"><i class=\"fa fa-bookmark\"></i></a>";
        }
    }
    else if ($blocked) {
        echo "<a class=nav-link data-toggle=popover data-placement=left data-trigger=hover 
                data-content=\"Restricted access. Paid users only.\">$value</a>";
    }
    else {//not available
        echo "$value";
    }
    
    if($can_show_los) {
        $query = "select * from los_main where id in (select losid from los_subject where subid = " . $row['subid'] . ")";
        $result_lm = do_mysqli_query($query);
        echo "<br>";
        while($row_lm = mysqli_fetch_array($result_lm)) {
            echo "<em>" . $row_lm['value'] . "</em>";
        }
    }
    
    echo "</td></tr>";
}

function get_module_id_clause() {
    
    $exam_guide_id = get_user_exam_guide_id();
    $min_rid = ($exam_guide_id -1) * 100;
    return " and rid > $min_rid and rid < " . ($min_rid + 100);
}

function show_los_list_for_not_ready_reading($rid) {
    
    if(!validate_id($rid)) {
        return;
    }
    
    $query = "select * from los_main where rid = ". $rid . " order by id";
    $result = do_mysqli_query($query);
    
    print_study_table_start();
    while($row = mysqli_fetch_array($result)) {
        echo "<tr><td><img src='images/icon_lock.gif'></td><td class=hidden-sm>" . 
            $row['value'] . "</td></tr>";
    }
    print_study_table_end();
}

function show_old_reading($id) {
    
    //query the same table again but ok: no need to complicate by simplifying.
    $result = do_mysqli_query("select * from old_reading where rid = " . $id);
    //should not be possible as id exists, and redundent, but check anyway.
    if(mysqli_num_rows($result) == 0) {
        show_user_error();
        return;
    }
    
    $row = mysqli_fetch_array($result);
    
    do_mysqli_query("update old_reading set visit = visit + 1 where rid = $id");
    
    $breadcrumb = array();
    
    print_page_header("Learning Outcome Statements", $row['link']);
    
    print_breadcrumb($breadcrumb);
    
    print_container_start();
    
    //main:
    print_main_section_start_with_card_header("Learning Outcome Statements", "bars");
    
    $thead = "<thead><tr><th>" . $row['title'] . "</th></tr></thead>";
    print_study_table_start($thead);

    $query = "select * from old_subject where rid = $id order by subid";
    $result = do_mysqli_query($query);

    while($row = mysqli_fetch_array($result)) {
        echo "<tr><td class=hidden-sm>";
        echo "<a href=cfa-study-notes-" . $row['link'] . ".html  class=\"text-success g-mr-15\">" . 
            cleanup_notes_html($row['title']) . "</a> ";
        echo "</td><tr>";
    }
    
    print_study_table_end();

    print_card_section_end();
    
    //side_column
    print_side_section_start();
    print_rotating_image();
    print_side_study_title_only("Learning Outcome Statements from a previous year's CFA study guide.");
    print_side_section_end();
        
    print_container_end();
    
    print_footer();
}

function get_learning_module_jquery_js($id) {
    if(is_guest()) {
        return "";
    }
    
    $js = "<script type=\"text/javascript\">
      $(document).ready(function(){
        $(\"#complete_button\").click(function() {
          $.post('jquery_action.php', {id:'$id', action:'3'});
          complete_reading();
        });

        $(\"#incomplete_button\").click(function() {
          $.post('jquery_action.php', {id:'$id', action:'4'});
          incomplete_reading();
        });
          
        $(\"body\").on('click', '#add_pnote_form button', function(e) {
          e.preventDefault();
          $.post('jquery_action.php', {id:'$id', action:'11', note: $(\"#pnote_input\").val()});
          setTimeout (function(){window.location.reload(true);}, 1000);
        });";
    
    $query = "select subid from subject where rid = $id order by number";
    $result = do_mysqli_query($query);
    $complete = ""; $incomplete = "";
    
    while($row = mysqli_fetch_array($result)) {
        $subid = $row['subid'];
        $js = $js . "
        $('#c_$subid').click(function() {
            var img = $(this).find('#img_$subid').eq(0);
            if(img.attr('src') == 'images/checked.gif') {
                img.attr('src', 'images/unchecked.gif');
                $.post('jquery_action.php', {id:'$subid', action:'2'});
            }
            else {
                img.attr('src', 'images/checked.gif');
                $.post('jquery_action.php', {id:'$subid', action:'1'});
            }
        });";
        $complete = $complete . "var img_$subid = $(this).find('#img_$subid').eq(0); img_$subid.attr('src', 'images/checked.gif');\n";
        $incomplete = $incomplete . "img.attr('src', 'images/unchecked.gif');\n";
    }
    
    $js = $js . "
      });

      function complete_reading() {
        $(\"#li_complete_button\").hide();
        $(\"#li_incomplete_button\").show();
        $(\"#marked_as_complete\").show();
        $(\"#marked_as_incomplete\").hide();
      }

      function incomplete_reading() {
        $(\"#li_complete_button\").show();
        $(\"#li_incomplete_button\").hide();
        $(\"#marked_as_complete\").hide();
        $(\"#marked_as_incomplete\").show();
      }
    </script>";
    
    return $js;
}

function print_module_action_msgs() {
?>
	<div class="d-flex justify-content-center">
		<div id=marked_as_complete style="display:none;" class="text-success g-ml-10"><i class="fa fa-check"></i> Module marked as complete.</div>
		<div id=marked_as_incomplete style="display:none;" class="text-success g-ml-10"><i class="fa fa-times"></i> Module marked as incomplete.</div>
	</div>
<?    
}
?>