How query nested array by time range mongodb with golang driver? - mongodb

Question

A have booking system with apoinments and need to get all booking objects with apoinments filtering with special time.
{
"id": "6295001bef176110cb52076c",
"companyID": "6294deeed16a4491020a6f3a",
"createdAt": "2022-05-30T17:34:19.458Z",
"updatedAt": "2022-05-31T12:23:58.805Z",
"apoinments": [
{
"id": "62a349a1fe907103f8d33111",
"startTime": "2022-06-10T12:00:00Z",
"endTime": "2022-06-10T14:00:00Z",
"createdAt": "2022-06-10T13:39:45.057Z",
"companyID": "6294deeed16a4491020a6f3a",
"bookingItemID": "6295001bef176110cb52076c",
},
{
"id": "62a349c0fe907103f8d33112",
"startTime": "2022-06-10T14:00:00Z",
"endTime": "2022-06-10T16:00:00Z",
"createdAt": "2022-06-10T13:40:16.927Z",
"companyID": "6294deeed16a4491020a6f3a",
"bookingItemID": "6295001bef176110cb52076c",
}
],
"title": "One",
}
I need to get all booking objects with their apoinments with startTime and endTime with special range so i do:
func (companyRepository *companyRepositoryImpl) GetCompanyBookingItems(companyID string) (*model.CompanyBookingItems, error) {
var existingCompany model.Company
objectId, _ := primitive.ObjectIDFromHex(companyID)
filter := bson.M{"_id": objectId}
err := companyRepository.Connection.Collection("companies").FindOne(cntx, filter).Decode(&existingCompany)
if err != nil {
return nil, exception.ResourceNotFoundException("Company", "id", companyID)
}
switch hour := time.Now().Hour(); { // missing expression means "true"
// dev
case hour >= 8 && hour <= 23:
// prod
// case hour >= 3 && hour <= 18:
// log.Println("hour", hour)
startDate := time.Date(time.Now().Year(), time.Now().Month(), time.Now().Day(), 11, 0, 0, 0, time.UTC)
endDate := time.Date(time.Now().Year(), time.Now().Month(), time.Now().Day()+1, 05, 0, 0, 0, time.UTC)
bookingItems := *existingCompany.BookingItems
for i := range bookingItems {
bookingItem := bookingItems[i]
var newApoinments []model.Apoinment
for _, apoinment := range *bookingItem.Apoinments {
if apoinment.StartTime.Local().After(startDate.Local()) && apoinment.EndTime.Local().Before(endDate.Local()) {
newApoinments = append(newApoinments, apoinment)
// log.Println("10 - 23", apoinment.ClientName)
}
}
*bookingItems[i].Apoinments = newApoinments
}
// dev
case hour >= 0 && hour <= 7:
// prod
// case hour >= 19 && hour <= 2:
startDate := time.Date(time.Now().Year(), time.Now().Month(), time.Now().Day()-1, 11, 0, 0, 0, time.UTC)
endDate := time.Date(time.Now().Year(), time.Now().Month(), time.Now().Day(), 05, 0, 0, 0, time.UTC)
// log.Println("start", startDate)
// log.Println("end", endDate)
bookingItems := *existingCompany.BookingItems
for i := range bookingItems {
bookingItem := bookingItems[i]
var newApoinments []model.Apoinment
for _, apoinment := range *bookingItem.Apoinments {
if apoinment.StartTime.Local().After(startDate.Local()) && apoinment.EndTime.Local().Before(endDate.Local()) {
newApoinments = append(newApoinments, apoinment)
// log.Println("10 - 23", apoinment.ClientName)
}
}
*bookingItems[i].Apoinments = newApoinments
}
}
return &model.CompanyBookingItems{
Data: *existingCompany.BookingItems,
}, nil
}
but get error runtime error: invalid memory address or nil pointer dereference
How i can filter and mongodb return me only document with special ranged time apoinments of booking object?