// EstimateFenceCostHandler POST /fences/estimateCost
func EstimateFenceCostHandler(w http.ResponseWriter, r *http.Request) {
user, err := auth.ValidateSession(r)
if err != nil {
http.Error(w, "Invalid Session token. "+err.Error(), http.StatusUnauthorized)
return
}
decoder := json.NewDecoder(r.Body)
var f fenceResponse
err = decoder.Decode(&f)
indexRadius := sort.SearchInts(models.UpgradeTypesRadius[:], f.Radius)
if !(indexRadius < len(models.UpgradeTypesRadius) && models.UpgradeTypesRadius[indexRadius] == f.Radius) {
http.Error(w, "Invalid Radius", http.StatusExpectationFailed)
return
}
indexRent := sort.SearchFloat64s(models.UpgradeTypesRent[:], float64(f.RentMultiplier))
if !(indexRent < len(models.UpgradeTypesRent) && models.UpgradeTypesRent[indexRent] == f.RentMultiplier) {
http.Error(w, "Invalid RentMultiplier", http.StatusExpectationFailed)
return
}
if f.TTL <= 0 || f.TTL > models.FenceMaxTTL {
http.Error(w, "Invalid TTL", http.StatusExpectationFailed)
return
}
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
price, err := scores.GetGeoFencePrice(f.Lat, f.Lon, f.TTL, f.RentMultiplier, indexRadius)
if err != nil {
InternalServerError(err, w)
return
}
overlap, err := checkFenceOverlapWithFenceResponse(&f)
if err != nil {
InternalServerError(err, w)
return
}
if overlap {
http.Error(w, "Fence does overlap.", http.StatusBadRequest)
return
}
var response = costEstimateResponse{Cost: price, CanAfford: user.Balance >= price}
bytes, err := json.Marshal(&response)
if err != nil {
InternalServerError(err, w)
return
}
w.Write(bytes)
}
// CreateFenceHandler POST /fences
func CreateFenceHandler(w http.ResponseWriter, r *http.Request) {
user, err := auth.ValidateSession(r)
if err != nil {
http.Error(w, "Invalid Session token. "+err.Error(), http.StatusUnauthorized)
return
}
decoder := json.NewDecoder(r.Body)
var requestFence fenceResponse
err = decoder.Decode(&requestFence)
if err != nil {
InternalServerError(err, w)
return
}
indexRadius := sort.SearchInts(models.UpgradeTypesRadius[:], requestFence.Radius)
if !(indexRadius < len(models.UpgradeTypesRadius) && models.UpgradeTypesRadius[indexRadius] == requestFence.Radius) {
http.Error(w, "Invalid Radius", http.StatusExpectationFailed)
return
}
indexRent := sort.SearchFloat64s(models.UpgradeTypesRent[:], float64(requestFence.RentMultiplier))
if !(indexRent < len(models.UpgradeTypesRent) && models.UpgradeTypesRent[indexRent] == requestFence.RentMultiplier) {
http.Error(w, "Invalid RentMultiplier", http.StatusExpectationFailed)
return
}
if requestFence.TTL <= 0 || requestFence.TTL > models.FenceMaxTTL {
http.Error(w, "Invalid TTL", http.StatusExpectationFailed)
return
}
var f models.Fence
f.Lat = requestFence.Lat
f.Lon = requestFence.Lon
f.Name = requestFence.Name
f.Radius = requestFence.Radius
f.RentMultiplier = requestFence.RentMultiplier
f.TTL = requestFence.TTL
f.DiesAt = time.Now().Add(time.Duration(f.TTL) * time.Second)
f.UserID = user.ID
overlap, err := checkFenceOverlap(&f)
if err != nil {
InternalServerError(err, w)
return
}
if overlap {
http.Error(w, "Fence does overlap.", http.StatusBadRequest)
return
}
price, err := scores.GetGeoFencePrice(f.Lat, f.Lon, f.TTL, f.RentMultiplier, indexRadius)
if price > user.Balance {
http.Error(w, "You do not have enough money for this thing.", http.StatusPaymentRequired)
return
}
f.Cost = price
user.LastKnownGeoHash = geomodel.GeoCell(requestFence.Lat, requestFence.Lon, models.LastKnownGeoHashResolution)
user.Balance = user.Balance - price
user.ExpensesGeoFenceAllTime = user.ExpensesGeoFenceAllTime + price
err = user.Save()
if err != nil {
log.Errorf("Error while saving user: %v", err)
}
redis.AddBalanceRecord(redis.GetBalanceRecordName(user.ID, redis.BalanceNameExpenseGeoFence), price)
f.User = *user
err = f.Save()
if err != nil {
InternalServerError(err, w)
return
}
err = search.IndexGeoFence(f)
if err != nil {
InternalServerError(err, w)
return
}
jobs.QueueNotifyUsersSyncRequest(f.Lat, f.Lon)
jobs.QueueFenceExpireRequest(&f)
bytes, err := json.Marshal(&f)
if err != nil {
InternalServerError(err, w)
return
}
w.Write(bytes)
}