From cab4355fec9928639e688d096d9ad5e77cb28493 Mon Sep 17 00:00:00 2001
From: Christian Klinger
Date: Fri, 10 Jun 2016 17:19:50 +0200
Subject: first rough version of exams-module.

---
 modules-available/exams/config.json                |  5 ++
 modules-available/exams/inc/exams.inc.php          | 17 +++++
 modules-available/exams/page.inc.php               | 76 ++++++++++++++++++++++
 .../exams/templates/page-add-exam.html             | 25 +++++++
 modules-available/exams/templates/page-exams.html  | 32 +++++++++
 5 files changed, 155 insertions(+)
 create mode 100644 modules-available/exams/config.json
 create mode 100644 modules-available/exams/inc/exams.inc.php
 create mode 100644 modules-available/exams/page.inc.php
 create mode 100644 modules-available/exams/templates/page-add-exam.html
 create mode 100644 modules-available/exams/templates/page-exams.html

(limited to 'modules-available/exams')

diff --git a/modules-available/exams/config.json b/modules-available/exams/config.json
new file mode 100644
index 00000000..e109b27b
--- /dev/null
+++ b/modules-available/exams/config.json
@@ -0,0 +1,5 @@
+{
+	"category":"main.status",
+	"dependencies": [ "locations" ],
+	"permission": "0"
+}
diff --git a/modules-available/exams/inc/exams.inc.php b/modules-available/exams/inc/exams.inc.php
new file mode 100644
index 00000000..9e5833ba
--- /dev/null
+++ b/modules-available/exams/inc/exams.inc.php
@@ -0,0 +1,17 @@
+<?php
+
+class Exams {
+
+
+    /**
+     * @param: array of location ids
+     * @return: true iff for any of the given location ids an exam is scheduled
+     **/
+    public static function isInExamMode($locationIds) {
+        // TODO: Better use prepared statement
+        $l = '(' . implode(', ', $locationIds) . ')';
+        $res = Database::queryFirst("SELECT (COUNT(examid) > 0) as examMode FROM exams WHERE starttime < NOW() AND endtime > NOW() AND locationid IN $l", []);
+
+        return $res['examMode'];
+    }
+}
diff --git a/modules-available/exams/page.inc.php b/modules-available/exams/page.inc.php
new file mode 100644
index 00000000..e5129d38
--- /dev/null
+++ b/modules-available/exams/page.inc.php
@@ -0,0 +1,76 @@
+<?php
+
+class Page_Exams extends Page
+{
+    var $action;
+    var $exams;
+    var $locations;
+
+    protected function doPreprocess()
+    {
+        User::load();
+
+        $req_action = Request::get('action', 'show');
+        if (in_array($req_action, ['show', 'add', 'delete'])) {
+            $this->action = $req_action;
+        }
+
+        if ($this->action === 'show') {
+            $tmp = Database::simpleQuery("select * from exams NATURAL LEFT OUTER JOIN location;", []);
+            while ($exam = $tmp->fetch(PDO::FETCH_ASSOC)) {
+                $this->exams[] = $exam;
+            }
+        } elseif ($this->action === 'add') {
+            $tmp = Database::simpleQuery("select * from location;", []);
+            while ($loc = $tmp->fetch(PDO::FETCH_ASSOC)) {
+                $this->locations[] = $loc;
+            }
+
+            if (Request::isPost()) {
+                /* process form-data */
+                $locationid = Request::post('location');
+                $starttime  = Request::post('starttime');
+                $endtime    = Request::post('endtime');
+
+                $res = Database::exec("INSERT INTO exams(locationid, starttime, endtime) VALUES(:locationid, :starttime, :endtime);",
+                    compact('locationid', 'starttime', 'endtime'));
+
+                if ($res === false) {
+                    Message::addError('exam-not-added');
+                }  else {
+                    Message::addInfo('exam-added-success');
+                }
+                Util::redirect('?do=exams');
+            }
+
+        } elseif ($this->action === 'delete') {
+            if (!Request::isPost()) { die('delete only works with a post request'); }
+            $examid = Request::post('examid');
+            $res = Database::exec("DELETE FROM exams WHERE examid = :examid;", compact('examid'));
+            if ($res === false) {
+                Message::addError('exam-not-deleted-error');
+            } else {
+                Message::addInfo('exam-deleted-success');
+            }
+            Util::redirect('?do=exams');
+        } else {
+            Util::traceError("unknown action");
+        }
+    }
+
+    protected function doRender()
+    {
+        // Render::setTitle(Dictionary::translate('lang_exams'));
+        //Render::addTemplate('page-exams', $_POST);
+
+        if ($this->action === "show") {
+            Render::setTitle("All Exams");
+            Render::addTemplate('page-exams', ['exams' => $this->exams]);
+        } elseif ($this->action === "add") {
+            Render::setTitle("Add Exam");
+            Render::addTemplate('page-add-exam', ['locations' => $this->locations]);
+        }
+        // Render::output('hi');
+    }
+
+}
diff --git a/modules-available/exams/templates/page-add-exam.html b/modules-available/exams/templates/page-add-exam.html
new file mode 100644
index 00000000..b610fcd8
--- /dev/null
+++ b/modules-available/exams/templates/page-add-exam.html
@@ -0,0 +1,25 @@
+<h1>Add Exam</h1>
+
+<form class="form" method="POST" action="?do=exams&action=add">
+    <div class="form-group">
+        <label for="location">Location</label>
+        <select name="location" class="form-control">
+            {{#locations}}
+            <option value="{{locationid}}"> {{locationname}} </option>
+            {{/locations}}
+        </select>
+    </div>
+
+    <div class="form-group">
+        <label for="starttime">Start Time</label>
+        <input class="form-control" type="datetime" name="starttime" />
+    </div>
+
+    <div class="form-group">
+        <label for="endtime">Start Time</label>
+        <input class="form-control" type="datetime" name="endtime" />
+    </div>
+
+    <input type="hidden" name="token" value="{{token}}" />
+    <input type="submit" class="btn btn-success" value="Add Exam"></input>
+</form>
diff --git a/modules-available/exams/templates/page-exams.html b/modules-available/exams/templates/page-exams.html
new file mode 100644
index 00000000..6c67fa2c
--- /dev/null
+++ b/modules-available/exams/templates/page-exams.html
@@ -0,0 +1,32 @@
+
+<h1>All Exams</h1>
+
+<table class="table">
+	<tr>
+		<th>ID</th>
+		<th>Location</th>
+		<th>Begin</th>
+		<th>End</th>
+		<th>Actions</th>
+	</tr>
+	{{#exams}}
+		<tr>
+			<td>{{examid}}</td>
+			<td>
+				<a href="?do=baseconfig&module=locations&locationid={{locationid}}"> {{locationname}} </a>
+			</td>
+			<td>{{starttime}}</td>
+			<td>{{endtime}}</td>
+			<td>
+				<form method="POST" action="?do=exams&action=delete"
+					onsubmit="return confirm('delete really?');">
+					<input type="hidden" name="token" value="{{token}}"/>
+					<input type="hidden" name="examid" value="{{examid}}"/>
+					<input type="submit" value="Delete" class="btn btn-sm" />
+				</form>
+			</td>
+		</tr>
+	{{/exams}}
+
+</table>
+<a href="?do=exams&action=add" class="btn btn-success">Add Exam </a>
-- 
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