mirror of https://github.com/BOINC/boinc.git
662 lines
21 KiB
PHP
662 lines
21 KiB
PHP
<?php
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// This file is part of BOINC.
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// http://boinc.berkeley.edu
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// Copyright (C) 2008 University of California
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//
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// BOINC is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License
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// as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// BOINC is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
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// Bolt scheduler.
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// GET args:
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// course_id: course ID
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// action: see commands below
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require_once("../inc/bolt.inc");
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require_once("../inc/bolt_sched.inc");
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require_once("../inc/bolt_db.inc");
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require_once("../inc/bolt_ex.inc");
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require_once("../inc/bolt_util.inc");
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require_once("../inc/util.inc");
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function debug_show_state($state, $tag) {
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global $user;
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global $refresh;
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if ($user->bolt->flags&BOLT_FLAGS_DEBUG) {
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echo "$tag state: <pre>"; print_r($state); echo "</pre>\n";
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if ($refresh) {
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echo "<p>Refresh ID: $refresh->id<p>";
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}
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echo "<hr>\n";
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}
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}
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function debug_show_item($item) {
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global $user;
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if ($user->bolt->flags&BOLT_FLAGS_DEBUG) {
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echo "Item:<pre>"; print_r($item); echo "</pre>\n";
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echo "<hr>\n";
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}
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}
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function update_info() {
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global $user;
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$sex = get_int('sex');
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$birth_year = get_int('birth_year');
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$user->bolt->update("sex=$sex, birth_year=$birth_year");
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}
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// The user clicked something on a page.
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// Look up the view record (the ID is in the URL) and update it
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// with the action and the time.
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// Return the record.
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//
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function finalize_view($view_id, $action) {
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global $user;
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if (!$view_id) return null;
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$view = BoltView::lookup_id($view_id);
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if (!$view) {
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error_page("no view");
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}
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if ($view->user_id != $user->id) {
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error_page("wrong user");
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}
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if (!$view->end_time) {
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$now = time();
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$view->update("end_time=$now, action=$action");
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}
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return $view;
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}
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function default_mode($item) {
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return $item->is_exercise()?BOLT_MODE_SHOW:BOLT_MODE_LESSON;
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}
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// A page is being shown to the user; make a record of it
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//
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function create_view($iter, $mode, $prev_view_id) {
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global $user;
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global $course;
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$now = time();
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$item = $iter->item;
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if (!$item) {
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$item = null;
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$item->name = '--end--';
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}
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$state = $iter->encode_state();
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debug_show_state($iter->state, "Ending");
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return BoltView::insert("(user_id, course_id, item_name, start_time, mode, state, fraction_done, prev_view_id) values ($user->id, $course->id, '$item->name', $now, $mode, '$state', $iter->frac_done, $prev_view_id)");
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}
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function page_header() {
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global $course;
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echo "<html><head>
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<title>$course->name</title>
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<link rel=stylesheet type=text/css href=bolt.css>
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</head><body>
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";
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if (function_exists('bolt_header')) bolt_header();
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}
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function page_footer() {
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if (function_exists('bolt_footer')) bolt_footer();
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echo "</body></html>";
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}
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// show a page saying the course has been completed
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//
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function show_finished_page($view_id, $prev_view_id) {
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global $course;
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global $url_args;
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page_header("Course completed");
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if ($course->bossa_app_id) {
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require_once("../inc/bossa_db.inc");
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$app = BossaApp::lookup_id($course->bossa_app_id);
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echo "
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Congratulations - you have completed the training for $course->name.
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<p>
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You may now
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<a href=bossa_get_job.php?bossa_app_id=$course->bossa_app_id>do work</a>.
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";
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} else {
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echo "Congratulations - you have completed this course.";
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$links[] = "<a href=bolt_sched.php?$url_args&action=prev&view_id=$view_id><img src=img/prev.gif></a>";
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$up_link = "<a href=bolt_sched.php?$url_args&action=course_home&view_id=$view_id>Course home page</a>";
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show_nav($links, $up_link, $view_id);
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}
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page_footer();
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}
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function show_refresh_finished() {
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page_header("Refresh completed");
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echo "<a href=bolt.php>Return to courses</a>";
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page_footer();
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}
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function show_nav($links, $up_link, $view_id) {
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global $course;
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echo "<p><center>
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<table width=60%><tr>
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";
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foreach ($links as $link) {
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echo "<td align=center>$link</td>\n";
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}
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echo "</tr></table> </center>
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<hr>
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<br>
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<form action=bolt_sched.php>
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<input type=hidden name=course_id value=$course->id>
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<input type=hidden name=action value=question>
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<input type=hidden name=view_id value=$view_id>
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<textarea name=question cols=60 onfocus=\"this.value=''\">Enter question or comment here</textarea>
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<br>
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<input type=submit value=Submit>
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</form>
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<p>
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$up_link
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";
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}
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// show an item (lesson, exercise, answer page)
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//
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function show_item($iter, $view_id, $prev_view_id, $mode, $repeat=null) {
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global $user;
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global $course;
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global $bolt_ex;
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global $refresh;
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global $url_args;
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$item = $iter->item;
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page_header();
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$bolt_query_string = $item->query_string;
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$links = array();
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if ($prev_view_id) {
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$links[] = "<a href=bolt_sched.php?$url_args&action=prev&view_id=$view_id><img src=img/prev.gif></a>";
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}
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$next = "<a href=bolt_sched.php?$url_args&action=next&view_id=$view_id><img src=img/next.gif border=0></a>";
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if ($item->is_exercise()) {
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$bolt_ex->mode = $mode;
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$bolt_ex->index = 0;
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switch ($mode) {
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case BOLT_MODE_SHOW:
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echo "
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<form action=bolt_sched.php>
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<input type=hidden name=view_id value=$view_id>
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<input type=hidden name=course_id value=$course->id>
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<input type=hidden name=action value=answer>
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";
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if ($refresh) {
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echo "
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<input type=hidden name=refresh_id value=$refresh->id>
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";
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}
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srand($view_id);
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require($item->filename);
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if (function_exists('bolt_divide')) bolt_divide();
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$next = "<input type=image src=img/next.gif value=OK></form>";
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break;
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case BOLT_MODE_ANSWER:
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require($item->filename);
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if (function_exists('bolt_divide')) bolt_divide();
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$score_pct = number_format($bolt_ex->score*100);
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echo "Score: $score_pct%";
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break;
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}
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} else {
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require_once($item->filename);
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if (function_exists('bolt_divide')) bolt_divide();
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}
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if ($repeat) {
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$avg = number_format($repeat->avg_score*100, 0);
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echo "<p>Score on this exercise set: $avg%";
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if ($repeat->flags & REVIEW) {
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//echo "<pre>";
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//print_r($repeat);
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//echo "</pre>";
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$name = urlencode($repeat->unit->name);
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$r = "<a href=bolt_sched.php?$url_args&action=review&view_id=$view_id&unit_name=$name>Review, then repeat exercises</a>";
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$links[] = $r;
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}
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if ($repeat->flags & REPEAT) {
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$r = "<a href=bolt_sched.php?$url_args&action=repeat&view_id=$view_id>Repeat exercises</a>";
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$links[] = $r;
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}
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if ($repeat->flags & NEXT) {
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$links[] = $next;
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}
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} else {
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$links[] = $next;
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}
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$up_link = "<a href=bolt_sched.php?$url_args&action=course_home&view_id=$view_id>Course home page</a>";
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show_nav($links, $up_link, $view_id);
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page_footer();
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if ($refresh) {
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$refresh->update("last_view_id=$view_id");
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} else {
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$e = new BoltEnrollment();
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$e->user_id = $user->id;
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$e->course_id = $course->id;
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$e->update("last_view_id=$view_id");
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}
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}
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// Show the student the results of an old exercise; no navigation items
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//
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function show_answer_page($iter, $score) {
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global $bolt_ex;
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$bolt_ex->mode = BOLT_MODE_ANSWER;
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$bolt_ex->index = 0;
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$item = $iter->item;
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page_header();
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$bolt_query_string = $item->query_string;
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require_once($item->filename);
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if (function_exists('bolt_divide')) bolt_divide();
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$score_pct = number_format($score*100);
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echo "Score: $score_pct%";
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page_footer();
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}
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function start_course() {
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global $user;
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global $course;
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global $course_doc;
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BoltEnrollment::delete($user->id, $course->id);
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$iter = new BoltIter($course_doc);
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$iter->at();
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$now = time();
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$mode = default_mode($iter->item);
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$view_id = create_view($iter, $mode, 0);
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BoltEnrollment::insert("(create_time, user_id, course_id, last_view_id) values ($now, $user->id, $course->id, $view_id)");
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show_item($iter, $view_id, 0, $mode);
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}
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function start_refresh() {
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global $course_doc;
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global $refresh;
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$xset_result = BoltXsetResult::lookup_id($refresh->xset_result_id);
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if (!$xset_result) error_page("Exercise set result not found");
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$view = BoltView::lookup_id($xset_result->view_id);
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if (!$view) error_page("view not found");
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$iter = new BoltIter($course_doc);
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$iter->decode_state($view->state);
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$iter->at();
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$xset = $iter->xset;
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if (!$xset || $xset->name != $xset_result->name) {
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error_page("missing exercise set");
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}
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$xset->restart($iter);
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$iter->at();
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$mode = default_mode($iter->item);
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$view_id = create_view($iter, $mode, 0);
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show_item($iter, $view_id, 0, $mode);
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}
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function show_next($iter, $view) {
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global $refresh, $user, $course;
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$iter->next();
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if ($refresh) {
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$iter->at();
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if (!$iter->xset) {
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// if we're doing a refresh and are no longer in an xset,
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// we must have finished the refresh
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//
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show_refresh_finished();
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$refresh->update('count=count+1');
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break;
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}
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}
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if ($iter->item) {
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$state = $iter->encode_state();
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$mode = default_mode($iter->item);
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$view_id = create_view($iter, $mode, $view->id);
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show_item($iter, $view_id, $view->id, $mode);
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} else {
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// course finished
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$iter->frac_done = 1;
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$fin_view_id = create_view($iter, BOLT_MODE_FINISHED, $view->id);
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$e = new BoltEnrollment();
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$e->user_id = $user->id;
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$e->course_id = $course->id;
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$e->update("last_view_id=$fin_view_id");
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show_finished_page($fin_view_id, $view->id);
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}
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}
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$user = get_logged_in_user();
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BoltUser::lookup($user);
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$course_id = get_int('course_id');
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$refresh_id = get_int('refresh_id', true);
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$refresh = null;
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$url_args = "course_id=$course_id";
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if ($refresh_id) {
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$refresh = BoltRefreshRec::lookup_id($refresh_id);
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if (!$refresh) error_page("No such refresh");
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if ($refresh->user_id != $user->id) error_page("Wrong user");
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if ($refresh->course_id != $course_id) error_page("Wrong course");
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$url_args .= "&refresh_id=$refresh_id";
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}
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$course = BoltCourse::lookup_id($course_id);
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if (!$course) {
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error_page("no such course");
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}
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$view_id = get_int('view_id', true);
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$action = get_str('action', true);
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$course_doc = require_once($course->doc_file());
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switch ($action) {
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case 'start':
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if (info_incomplete($user)) {
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request_info($user, $course);
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exit();
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}
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if ($refresh) {
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start_refresh();
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exit();
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}
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$e = BoltEnrollment::lookup($user->id, $course_id);
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if ($e) {
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page_header();
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echo "You are already enrolled in $course->name.
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<p>
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Are you sure you want to start over from the beginning?
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<p>
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";
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show_button(
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"bolt_sched.php?action=start_confirm&$url_args",
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"Yes",
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"Start this course from the beginning"
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);
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show_button(
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"bolt_sched.php?action=resume&$url_args",
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"Resume",
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"Resume course from current position"
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);
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page_footer();
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exit();
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}
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// fall through
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case 'start_confirm':
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start_course();
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break;
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case 'update_info':
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update_info();
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start_course();
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break;
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case 'prev':
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$view = finalize_view($view_id, BOLT_ACTION_PREV);
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debug_show_state(unserialize($view->state), "Initial");
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if ($view->prev_view_id) {
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$view = BoltView::lookup_id($view->prev_view_id);
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$iter = new BoltIter($course_doc);
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$iter->decode_state($view->state);
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$iter->at();
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$mode = $view->mode;
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if ($mode == BOLT_MODE_ANSWER) {
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$v2 = BoltView::lookup_id($view->prev_view_id);
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$result = BoltResult::lookup_id($v2->result_id);
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srand($v2->id);
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$bolt_ex->score = $result->score;
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$bolt_ex->query_string = $result->response;
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}
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$view_id = create_view($iter, $mode, $view->prev_view_id);
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show_item($iter, $view_id, $view->prev_view_id, $mode);
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} else {
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error_page("At start of course");
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}
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break;
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case 'next': // "next" button in lesson or exercise answer page
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$view = finalize_view($view_id, BOLT_ACTION_NEXT);
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debug_show_state(unserialize($view->state), "Initial");
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$iter = new BoltIter($course_doc);
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$iter->decode_state($view->state);
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show_next($iter, $view);
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break;
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case 'answer': // submit answer in exercise
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$view = finalize_view($view_id, BOLT_ACTION_SUBMIT);
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debug_show_state(unserialize($view->state), "Initial");
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$iter = new BoltIter($course_doc);
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$iter->decode_state($view->state);
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$iter->at();
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debug_show_item($iter->item);
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$item = $iter->item;
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if (!$item->is_exercise()) {
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print_r($item);
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error_page("expected an exercise");
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}
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if ($view->item_name != $item->name) {
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error_page("unexpected name");
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}
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// compute the score
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$bolt_ex->query_string = $_SERVER['QUERY_STRING'];
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$bolt_ex->mode = BOLT_MODE_SCORE;
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$bolt_ex->index = 0;
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$bolt_ex->score = 0;
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$bolt_query_string = $item->query_string;
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srand($view_id);
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ob_start(); // buffer output to avoid showing exercise text
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require($item->filename);
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ob_end_clean();
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$bolt_ex->score /= $bolt_ex->index;
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if ($item->callback) {
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call_user_func(
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$item->callback, $bolt_ex->score, $bolt_ex->query_string
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);
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}
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// make a record of the result
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$qs = BoltDb::escape_string($_SERVER['QUERY_STRING']);
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$now = time();
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$result_id = BoltResult::insert(
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"(create_time, user_id, course_id, view_id, item_name, score, response)
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values ($now, $user->id, $course->id, $view->id, '$view->item_name', $bolt_ex->score, '$qs')"
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);
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$view->update("result_id=$result_id");
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// If this is part of an exercise set, call its callback function
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//
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$repeat = null;
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$xset = $iter->xset;
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if ($xset) {
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$is_last = $xset->xset_record_score(
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$iter, $bolt_ex->score, $view->id, $avg_score, $repeat
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);
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if ($repeat) $repeat->avg_score = $avg_score;
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if ($is_last) {
|
|
// if the exercise set if finished, make or update DB records
|
|
//
|
|
if ($xset->callback) {
|
|
call_user_func($xset->callback, $avg_score);
|
|
}
|
|
$now = time();
|
|
$id = BoltXsetResult::insert("(create_time, user_id, course_id, name, score, view_id) values ($now, $user->id, $course->id, '$xset->name', $avg_score, $view_id)");
|
|
$refresh_intervals = $xset->refresh;
|
|
if ($refresh_intervals) {
|
|
$refresh_rec = BoltRefreshRec::lookup(
|
|
"user_id=$user->id and course_id=$course->id and name='$xset->name'"
|
|
);
|
|
if ($refresh_rec) {
|
|
$count = $refresh_rec->count;
|
|
$n = count($refresh_intervals->intervals);
|
|
if ($count >= $n) {
|
|
$count = $n - 1;
|
|
}
|
|
$due_time = time() + $refresh_intervals->intervals[$count]*86400;
|
|
$refresh_rec->update("create_time=$now, xset_result_id=$id, due_time=$due_time");
|
|
} else {
|
|
$due_time = time() + $refresh_intervals->intervals[0]*86400;
|
|
BoltRefreshRec::insert(
|
|
"(user_id, course_id, name, create_time, xset_result_id, due_time, count) values ($user->id, $course->id, '$xset->name', $now, $id, $due_time, 0)"
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// show the answer page
|
|
|
|
if ($item->has_answer_page) {
|
|
srand($view_id);
|
|
$view_id = create_view($iter, BOLT_MODE_ANSWER, $view->id);
|
|
show_item($iter, $view_id, $view->id, BOLT_MODE_ANSWER, $repeat);
|
|
} else {
|
|
show_next($iter, $view);
|
|
}
|
|
break;
|
|
case 'answer_page':
|
|
$view = BoltView::lookup_id($view_id);
|
|
$iter = new BoltIter($course_doc);
|
|
$iter->decode_state($view->state);
|
|
$iter->at();
|
|
if ($iter->item->name != $view->item_name) {
|
|
error_page("Exercise no longer exists in course");
|
|
}
|
|
$result = BoltResult::lookup_id($view->result_id);
|
|
srand($view_id);
|
|
$bolt_ex->query_string = $result->response;
|
|
show_answer_page($iter, $result->score);
|
|
break;
|
|
case 'course_home':
|
|
$view = finalize_view($view_id, BOLT_ACTION_COURSE_HOME);
|
|
Header("Location: bolt.php");
|
|
break;
|
|
case 'review':
|
|
// user chose to do review then repeat an exercise set
|
|
//
|
|
$view = finalize_view($view_id, BOLT_ACTION_REVIEW);
|
|
debug_show_state(unserialize($view->state), "Initial");
|
|
$iter = new BoltIter($course_doc);
|
|
$iter->decode_state($view->state);
|
|
$iter->at();
|
|
if (!$iter->xset) {
|
|
echo "NO XSET"; exit;
|
|
}
|
|
$xset = $iter->xset;
|
|
$unit_name = get_str('unit_name');
|
|
$found = $xset->start_review($iter, $unit_name);
|
|
if (!$found) {
|
|
echo "REVIEW UNIT MISSING"; exit;
|
|
}
|
|
$iter->at();
|
|
$mode = default_mode($iter->item);
|
|
$view_id = create_view($iter, $mode, $view->id);
|
|
show_item($iter, $view_id, $view->id, $mode);
|
|
break;
|
|
case 'repeat':
|
|
// user chose to repeat an exercise set
|
|
//
|
|
$view = finalize_view($view_id, BOLT_ACTION_REPEAT);
|
|
debug_show_state(unserialize($view->state), "Initial");
|
|
$iter = new BoltIter($course_doc);
|
|
$iter->decode_state($view->state);
|
|
$iter->at();
|
|
if (!$iter->xset) {
|
|
echo "NO XSET"; exit;
|
|
}
|
|
$xset = $iter->xset;
|
|
$xset->restart($iter);
|
|
$iter->at();
|
|
$mode = default_mode($iter->item);
|
|
$view_id = create_view($iter, $mode, $view->id);
|
|
show_item($iter, $view_id, $view->id, $mode);
|
|
break;
|
|
case 'resume':
|
|
// user chose to resume a course or refresh
|
|
//
|
|
if ($refresh) {
|
|
if ($refresh->last_view_id) {
|
|
$view = BoltView::lookup_id($refresh->last_view_id);
|
|
} else {
|
|
start_refresh();
|
|
exit();
|
|
}
|
|
} else {
|
|
$view = null;
|
|
$e = BoltEnrollment::lookup($user->id, $course_id);
|
|
if ($e) {
|
|
$view = BoltView::lookup_id($e->last_view_id);
|
|
}
|
|
if (!$view) {
|
|
start_course();
|
|
break;
|
|
}
|
|
}
|
|
if ($view->mode == BOLT_MODE_FINISHED) {
|
|
show_finished_page($view->id, $view->prev_view_id);
|
|
break;
|
|
}
|
|
$iter = new BoltIter($course_doc);
|
|
$iter->decode_state($view->state);
|
|
$iter->at();
|
|
$mode = $view->mode;
|
|
if ($view->item_name == $iter->item->name && ($mode == BOLT_MODE_ANSWER)) {
|
|
// if we're returning to an answer page,
|
|
// we need to look up the user's responses and the score.
|
|
//
|
|
$view_orig = BoltView::lookup_id($view->prev_view_id);
|
|
$result = BoltResult::lookup_id($view_orig->result_id);
|
|
srand($view_orig->id);
|
|
$bolt_ex->query_string = $result->response;
|
|
$bolt_ex->score = $result->score;
|
|
$bolt_ex->index = 0;
|
|
$view_id = create_view($iter, $mode, $view_orig->id);
|
|
show_item($iter, $view_id, $view_orig->id, $mode);
|
|
} else {
|
|
$view_id = create_view($iter, $mode, $view->id);
|
|
show_item($iter, $view_id, $view->id, $mode);
|
|
}
|
|
break;
|
|
case 'question':
|
|
$view = finalize_view($view_id, BOLT_ACTION_QUESTION);
|
|
debug_show_state(unserialize($view->state), "Initial");
|
|
$now = time();
|
|
$question = BoltDb::escape_string(get_str('question'));
|
|
BoltQuestion::insert("(create_time, user_id, course_id, name, mode, question, state) values ($now, $user->id, $course->id, '$view->item_name', $view->mode, '$question', 0)");
|
|
page_header();
|
|
echo "
|
|
Thanks; we have recorded your question.
|
|
Questions help us improve this course.
|
|
We aren't able to individually respond to all questions.
|
|
Responses are delivered as private messages.
|
|
<p>
|
|
<a href=bolt_sched.php?$url_args&action=resume>Resume course</a>
|
|
";
|
|
page_footer();
|
|
break;
|
|
default:
|
|
error_page("unknown action: $action");
|
|
}
|
|
|
|
?>
|