fix:#75 refactoring duplicate function

services/data-manager/service/functions/event.go

@@ -0,0 +1,17 @@
+package functions
+
+import (
+	"github.com/google/uuid"
+	"htwkalender/data-manager/model"
+)
+
+// generateUUIDs generates a UUID for each event based on the event name, course and semester
+// the UUID is used to identify the event in the database
+func GenerateUUIDs(events []model.Event) []model.Event {
+	for i, event := range events {
+		// generate a hash value from the event name, course and semester
+		hash := uuid.NewSHA1(uuid.NameSpaceOID, []byte(event.Name+event.Course))
+		events[i].UUID = hash.String()
+	}
+	return events
+}