fix(getAvailableModules): parse ids like 35-232a correctly

cmd/getAvailableModules.go

@@ -88,7 +88,9 @@ func isEvent(eventSelection *goquery.Selection) bool {
 func extractEvent(eventSelection *goquery.Selection) (Event, error) {
 	paragraphs := eventSelection.Find("p")
 
-	id := paragraphs.Find("a[name='eventLink']").Text()[0:6]
+	regexForId := regexp.MustCompile("\\d{2}-\\d{3}\\w?")
+	idText := paragraphs.Find("a[name='eventLink']").Text()
+	id := regexForId.FindStringSubmatch(idText)[0]
 
 	title := paragraphs.Find(".eventTitle").Text()
 	// something unnecessary whitespace is added in the title at the start or end, remove

cmd/getAvailableModules_test.go

@@ -238,7 +238,7 @@ func TestGetAvailableModules(t *testing.T) {
 				
 				
 					<td class="tbdata dl-inner">
-						<p><strong><a href="/scripts/cfefef3" name="eventLink">64-091 <span class="eventTitle">Exercises Distributed Systems and Systems Security </span></a></strong></p>
+						<p><strong><a href="/scripts/cfefef3" name="eventLink">64-091a <span class="eventTitle">Exercises Distributed Systems and Systems Security </span></a></strong></p>
 						<p>Markus Ruehl</p>
 						<p></p>
 					</td>
@@ -344,7 +344,7 @@ func TestGetAvailableModules(t *testing.T) {
 					RegistrationLink: "", // should be empty, as simulated user is already registered
 					Events: []Event{
 						{
-							Id:              "64-091",
+							Id:              "64-091a",
 							Title:           "Exercises Distributed Systems and Systems Security",
 							Link:            stineURL.Url + "/scripts/cfefef3",
 							MaxCapacity:     math.Inf(1),