Gazelle/classes/calendarview.class.php

<?php

# todo: Check strict eqality all this page
# The staff calendar may actually be broken

class CalendarView
{
    private static $Days = array('S', 'M', 'T', 'W', 'T', 'F', 'S');
    private static $Headings = array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
    private static $Events;

    public static function render_title($Month, $Year)
    {
        if (!is_numeric($Month) || !is_numeric($Year)) {
            error(404);
        }

        $NextMonth = $Month % 12 == 0 ? 1 : $Month + 1;
        $PreviousMonth = $Month == 1 ? 12 : $Month - 1;
        $NextYear = $Year;

        if ($NextMonth == 1) {
            $NextYear++;
        }

        $PreviousYear = $Year;
        if ($PreviousMonth == 12) {
            $PreviousYear--;
        } ?>

<h1 class="center">
  <a
    href="tools.php?action=calendar&amp;month=<?=$PreviousMonth?>&amp;year=<?=$PreviousYear?>">«</a>
  <?=date("F", mktime(0, 0, 0, $Month, 10)) . " $Year"?>
  <a
    href="tools.php?action=calendar&amp;month=<?=$NextMonth?>&amp;year=<?=$NextYear?>">»</a>
</h1>

<input type="hidden" id="month" value="<?=$Month?>" />
<input type="hidden" id="year" value="<?=$Year?>" />

<?php
    }

    private static function get_events_on($Day, $Events)
    {
        // Linear search, lol
        $Results = [];
        foreach ($Events as $Event) {
            if ($Event['StartDay'] == $Day || ($Event['StartDay'] <= $Day && $Event['EndDay'] >= $Day)) {
                $Results[] = $Event;
            }
        }
        return $Results;
    }

    private static function render_events_day($Day, $Events)
    {
        $Events = self::get_events_on($Day, $Events);
        foreach ($Events as $Event) {
            $Color = Calendar::$Colors[Calendar::$Importances[$Event['Importance']]];
            $Category = Calendar::$Categories[$Event['Category']];
            $Tooltip = $Event['Title'] . " - " . Calendar::$Categories[$Event['Category']] . " - " . Calendar::$Importances[$Event['Importance']]; ?>

<p>
  <a href="#" class="event_day tooltip" title="<?=$Tooltip?>"
    data-gazelle-id="<?=$Event['ID']?>"
    style="color: <?=$Color?>;"><?=Format::cut_string($Event['Title'], 8, true)?></a>
</p>

<?php
        }
    }

    public static function render_calendar($Month, $Year, $Events)
    {
        $RunningDay = date('w', mktime(0, 0, 0, $Month, 1, $Year));
        $DaysInMonth = date('t', mktime(0, 0, 0, $Month, 1, $Year));
        $DaysThisWeek = 1;
        $DayCounter = 0;
        $DatesArray = []; ?>

<table class="calendar">
  <tr>
    <?php foreach (self::$Headings as $Heading) { ?>
    <td class="calendar-row calendar-heading">
      <strong><?=$Heading?></strong>
    </td>
    <?php } ?>
  </tr>

  <tr class="calendar-row">
    <?php for ($x = 0; $x < $RunningDay; $x++) { ?>
    <td class="calendar-day-np"></td>
    <?php
      $DaysThisWeek++;
    }

        for ($i = 1; $i <= $DaysInMonth; $i++) {
            ?>
    <td class="calendar-day">
      <div class="day-events">
        <?php self::render_events_day($i, $Events); ?>
      </div>
      <div class="day-number">
        <?=$i?>
      </div>
    </td>
    <?php if ($RunningDay == 6) { ?>
  </tr>

  <?php if (($DayCounter + 1) != $DaysInMonth) { ?>
  <tr class="calendar-row">
    <?php
        }
        $RunningDay = -1;
        $DaysThisWeek = 0;
      }
            $DaysThisWeek++;
            $RunningDay++;
            $DayCounter++;
        }

        if ($DaysThisWeek < 8) {
            for ($x = 1; $x <= (8 - $DaysThisWeek); $x++) {
                ?>
    <td class="calendar-day-np"></td>
    <?php
            }
        } ?>
  </tr>

</table>
<?php
    echo $Calendar;
    }
}