func countDays(start, end time.Time) int {
endDateString := utils.DateToString(end)
days := 0
for element := start; utils.DateToString(element) != endDateString; element = element.Add(time.Hour * time.Duration(24)) {
days = days + 1
}
return days
}
func performQuery(query data.FlightQuery, googleQPXExpressCredentials string) {
client := &http.Client{
Transport: &transport.APIKey{Key: googleQPXExpressCredentials}}
service, err := qpxexpress.New(client)
if err != nil {
panic(err)
}
tripRequest := qpxexpress.TripsSearchRequest{}
trip1 := qpxexpress.SliceInput{}
trip1.Date = utils.DateToString(query.StartDate)
trip1.Destination = query.DestAirport
trip1.Origin = query.StartAirport
trip2 := qpxexpress.SliceInput{}
trip2.Date = utils.DateToString(query.BackDate)
trip2.Destination = query.StartAirport
trip2.Origin = query.DestAirport
trips := []*qpxexpress.SliceInput{}
trips = append(trips, &trip1)
trips = append(trips, &trip2)
tripRequest.Request = &qpxexpress.TripOptionsRequest{}
tripRequest.Request.Slice = trips
tripRequest.Request.Refundable = false
tripRequest.Request.Passengers = &qpxexpress.PassengerCounts{}
tripRequest.Request.Passengers.AdultCount = 1
// we only need one solution (it is already the cheapest one)
tripRequest.Request.Solutions = 1
result, err := service.Trips.Search(&tripRequest).Do()
utils.CheckErr(err, "unable to retrieve trips from Google QPX Express")
costLockMutex.Lock()
// the first trip is already the cheapest one !
if len(result.Trips.TripOption) == 0 {
costLock[query] = "not found !"
} else {
costLock[query] = result.Trips.TripOption[0].SaleTotal
}
costLockMutex.Unlock()
}
func DisplayRefreshPagePage(w http.ResponseWriter, r *http.Request) {
toDisplay := make([]queryDisplayData, 0)
for _, element := range flightQueries {
startDateString := utils.DateToString(element.StartDate)
endDateString := utils.DateToString(element.BackDate)
duration := countDays(element.StartDate, element.BackDate)
costLockMutex.Lock()
price, ok := costLock[element]
costLockMutex.Unlock()
priceString := "???"
if ok {
priceString = price
}
displayData := queryDisplayData{
Description: fmt.Sprintf("From %v to %v (%v days) - %v to %v", startDateString, endDateString, duration, element.StartAirport, element.DestAirport),
Cost: priceString,
}
toDisplay = append(toDisplay, displayData)
}
// create, initialize and use the template
uninitializedTemplate := template.New("query calculation template")
initializedTempalte, err := uninitializedTemplate.Parse(dataHtmlData)
utils.CheckErr(err, "problem while parsing template")
arguments := pageArgumentsData{
Results: toDisplay,
}
err = initializedTempalte.Execute(w, arguments)
utils.CheckErr(err, "problem while executing template")
}