added control tables (s_*) + working on implementing absence and booking types

Backend/models/booking.go

@@ -13,6 +13,11 @@ import (
 
 type SameBookingError struct{}
 
+type BookingType struct {
+	Id   int8
+	Name string
+}
+
 func (e SameBookingError) Error() string {
 	return "the same booking already exists!"
 }
@@ -261,3 +266,34 @@ func (b *Booking) UpdateTime(newTime time.Time) {
 func (b *Booking) ToString() string {
 	return fmt.Sprintf("Booking %d: at: %s, as type: %d", b.CounterId, b.Timestamp.Format("15:04"), b.CheckInOut)
 }
+
+func GetBokkingTypes() ([]BookingType, error) {
+	var types []BookingType
+	qStr, err := DB.Prepare("SELECT anwesenheit_id, anwesenheit_name FROM s_anwesenheit_typen;")
+	if err != nil {
+		return types, err
+	}
+	defer qStr.Close()
+	rows, err := qStr.Query()
+	if err != nil {
+		log.Println("Error getting anwesenheit rows!", err)
+		return types, err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var bookingType BookingType
+		if err := rows.Scan(&bookingType.Id, &bookingType.Name); err != nil {
+			log.Println("Error scanning row!", err)
+		}
+		types = append(types, bookingType)
+	}
+	return types, nil
+}
+
+func GetBookingTypesCached() []BookingType {
+	types, err := definedTypes.Get("s_anwesenheit_typen")
+	if err != nil {
+		return []BookingType{}
+	}
+	return types.([]BookingType)
+}