feat:#26 added new api route

backend/service/events/courseService.go

@@ -3,12 +3,35 @@ package events
 import (
 	"github.com/pocketbase/pocketbase"
 	"htwkalender/service/db"
+	"htwkalender/service/functions"
 )
 
 func GetAllCourses(app *pocketbase.PocketBase) []string {
 	return db.GetAllCourses(app)
 }
 
-func GetAllCoursesForSemester(app *pocketbase.PocketBase, semester string) interface{} {
+func GetAllCoursesForSemester(app *pocketbase.PocketBase, semester string) []string {
 	return db.GetAllCoursesForSemester(app, semester)
 }
+
+func GetAllCoursesForSemesterWithEvents(app *pocketbase.PocketBase, semester string) ([]string, error) {
+	courses, err := db.GetAllCoursesForSemesterWithEvents(app, semester)
+	if err != nil {
+		return nil, err
+	} else {
+		// remove empty courses
+		courses = removeEmptyCourses(courses)
+		return courses, nil
+	}
+}
+
+func removeEmptyCourses(courses []string) []string {
+	var filteredCourses []string
+
+	for index, course := range courses {
+		if functions.OnlyWhitespace(course) || len(course) == 0 {
+			filteredCourses = append(courses[:index], courses[index+1:]...)
+		}
+	}
+	return filteredCourses
+}