<?php 

/*

 * Copyright 2010 Nathan Gelderloos, Ethan Zonca, Nathan Phillip Brink

 *

 * This file is part of SlatePermutate.

 *

 * SlatePermutate is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Affero General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * SlatePermutate is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU Affero General Public License for more details.

 *

 * You should have received a copy of the GNU Affero General Public License

 * along with SlatePermutate.  If not, see <http://www.gnu.org/licenses/>.

 */

include_once 'inc' . DIRECTORY_SEPARATOR . 'class.schedule.php';

include_once 'inc' . DIRECTORY_SEPARATOR . 'class.course.inc';

include_once 'inc' . DIRECTORY_SEPARATOR . 'class.section.php';

include_once 'inc' . DIRECTORY_SEPARATOR . 'class.page.php';

include_once 'inc' . DIRECTORY_SEPARATOR . 'class.mobilepage.php';

require_once('inc' . DIRECTORY_SEPARATOR . 'schedule_store.inc');

/*

 * Help constrol whether or not the school selection dialogue should

 * be shown or whether or not $_SESSION['school_chosen'] should be set

 * TRUE. These things should generally be false when loading a saved

 * schedule.

 */

$creating_new_schedule = TRUE;

$schedule_store = FALSE;

$sch = FALSE;

$errors_fix = FALSE;

$inputPage_options = array('school_semester_constant' => FALSE);

$parent_schedule_id = NULL;

if (isset($_REQUEST['s']))

  {

    $schedule_store = schedule_store_init();

    $parent_schedule_id = (int)$_REQUEST['s'];

    $sch = schedule_store_retrieve($schedule_store, $parent_schedule_id);

    /*

     * Allow a user to change the school and semester of a

     * saved_schedule he's trying to revive if he really wants to.

     */

    if (!empty($_GET['school']))

      $school = school_load_guess(FALSE);

    else

      $school = $sch->school_get();

    if (!empty($_GET['semester']))

      $semester = school_semester_guess($school, FALSE);

    else

      $semester = $sch->semester_get();

    if (!empty($sch))

      {

	$creating_new_schedule = FALSE;

	$inputPage_options += array('school' => $school,

				    'semester' => $semester);

      }

    else

      $parent_schedule_id = NULL;

    /*

     * Code outside of this block should _not_ assume $school and/or

     * $semester are defined. But it'd be more expensive to unset()

     * them here than to just overwrite them later...

     */

  }

elseif (!empty($_REQUEST['e']))

  {

    /*

     * Read an errorful schedule out of $_POST, this $_POST is created

     * by process.php when the originally sinful user produces bad

     * data.

     */

    $errors_fix = TRUE;

    if (!empty($_POST['postData']))

      $postData = $_POST['postData'];

    if (!empty($postData['parent_schedule_id']))

      $parent_schedule_id = (int)$postData['parent_schedule_id'];

    if (!empty($postData['school']))

      {

	$school = school_load($postData['school']);

	if (!empty($school))

	  $inputPage_options['school'] = $school;

      }

    if (!empty($school) && !empty($postData['semester']))

      {

	$semesters = school_semesters($school);

	if (!empty($semesters[$postData['semester']]))

	  $inputPage_options['semester'] = $semester;

      }

    $creating_new_schedule = FALSE;

  }

/*

 * We cannot initialize the page object nor guess the school before

 * figuring loading a saved schedule because we'll default to that

 * saved_schedule's school/semester.

 */

$scripts = array('jQueryMobile', 'jQueryUI-NoStyles', 'mScheduleInput');

$inputPage = mobilepage::page_create('Scheduler', $scripts, $inputPage_options);

$school = $inputPage->get_school();

$semester = $inputPage->semester_get();

$hc = ' 

';

$inputPage->headcode_add('scheduleInput', $hc, TRUE);

$inputPage->head();

/*

 * Force a student to choose a school or declare he's a generic

 * student before displaying the input form. To do this, we need

 * another variable in $_SESSION: $_SESSION['school_chosen'].

 */

if (!empty($_REQUEST['school']) && !empty($_SESSION['school']) && !strcmp($_REQUEST['school'], $_SESSION['school']))

  $_SESSION['school_chosen'] = TRUE;

if (!empty($_REQUEST['selectschool'])

    || empty($school) || $school['id'] == 'default' && empty($_SESSION['school_chosen']))

  {

    $next_page = 'input.php?';

    if (isset($_GET['s']))

      $next_page .= 's=' . (int)$_GET['s'] . '&';

    if (isset($_GET['semester']))

      $next_page .= 'semester=' . htmlentities($$_GET['semester']) . '&';

?>

<h2>School Selection</h2>

<p>

  Choose the school you attend from the list below. <strong>If you cannot

  find your school</strong>, you may proceed using

  the <a href="<?php echo htmlentities($next_page); ?>school=default">generic

  settings</a>.

</p>

<?php

    $inputPage->showSchools($next_page);

    $inputPage->foot();

    exit;

  }

if (!empty($_REQUEST['selectsemester']))

  {

?>

<h2>Semester Selection</h2>

<p>

  Choose the semester for which you wish you make a schedule from the

  list below. If any semester is missing, please <a

  href="feedback.php?feedback=My+school+is+missing+the+&lt;semester+name&gt;+semester.">let us know</a>.

</p>

<?php

  $next_page = 'input.php?';

  if (isset($_GET['s']))

    $next_page .= 's=' . (int)$_GET['s'] . '&';

  if (!empty($_GET['school']))

    $next_page .= 'school=' . $_GET['school'] . '&';

  $inputPage->showSemesters($next_page);

  $inputPage->foot();

  exit;

  }

$inputPage->showSavedScheds($_SESSION);

?>

<?php if (!empty($input_warning_banner)): ?>

<div class="warning">

  <?php echo $input_warning_banner; ?>

</div>

<?php endif; ?>

<p>

  Welcome to SP<?php $inputPage->addressStudent(', ', '', FALSE); ?>!

  <?php if (school_has_auto($inputPage->get_school())): ?>

  To get started, enter in a course identifier (e.g., <em>

 <!--'-->

  <?php endif; ?>

</p>

<form method="post" action="process.php" id="scheduleForm">

<p class="nospace" style="border-left: 5px solid #999; padding-left: 5px!important; padding-top: 5px!important;"><label>Schedule Name</label><br />

<input

    id="scheduleName"

    style="margin-bottom: 1em;"

    class="defText required"

    type="text"

    title="My <?php echo $semester['name']; ?> Schedule"

    name="postData[name]"

    <?php

      if ($sch)

        echo 'value="' . htmlentities($sch->getName(), ENT_QUOTES) . '"';

      elseif ($errors_fix)

        echo 'value="' . htmlentities($_POST['postData']['name'], ENT_QUOTES) . '"';

    ?> />

  <?php if (!empty($parent_schedule_id)): ?>

  <input type="hidden" name="postData[parent_schedule_id]" value="<?php echo htmlentities($parent_schedule_id, ENT_QUOTES); ?>" />

  <input type="hidden" name="postData[school]" value="<?php echo htmlentities($school['id']); ?>" />

  <input type="hidden" name="postData[semester]" value="<?php echo htmlentities($semester['id']); ?>" />

  <?php endif; ?>

</p>

<table id="courseTable">

	<tr><td><input class="courseInput" type="text"><a class="check" href="#" data-role="button" data-icon="check" data-iconpos="notext">OK</a></td></tr>

</table>

<div class="paddingtop">

  <input data-role="button" data-theme="b" type="submit" value="Find a schedule" />

</div>

</form>

<?php

$inputPage->foot();

function input_course_js(Course $course, $whitespace = '  ')

{

  $title = $course->title_get();

  if (empty($title))

    $title = '';

  $js = $whitespace . 'class_last = add_class_n(' . json_encode($course->getName()) . ', '

    . json_encode($title) . ');' . PHP_EOL;

  foreach ($course as $course_slot)

    foreach ($course_slot as $section)

      {

	$meetings = $section->getMeetings();

      foreach ($meetings as $meeting)

	{

	  $js .= $whitespace . 'add_section_n(class_last, ' . json_encode($section->getLetter()) . ', '

	    . json_encode($section->getSynonym()) . ', '

	    . json_encode($meeting->getStartTime()) . ', '

	    . json_encode($meeting->getEndTime()) . ', '

	    . json_encode(array('m' => $meeting->getDay(0), 't' => $meeting->getDay(1), 'w' => $meeting->getDay(2), 'h' => $meeting->getDay(3), 'f' => $meeting->getDay(4),

				's' => $meeting->getDay(5))) . ', '

	    . json_encode($meeting->instructor_get()) . ', '

	    . json_encode($meeting->getLocation()) . ', '

	    . json_encode($meeting->type_get()) . ', '

	    . json_encode($course_slot->id_get()) . ');' . PHP_EOL;

	}

    }

  return $js;

}