// VisitFenceHandler handles POST /fences/{fenceId}/visit
func VisitFenceHandler(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
}
vars := mux.Vars(r)
fenceID, err := strconv.ParseUint(vars["fenceId"], 10, 8)
if err != nil {
http.Error(w, "Invalid Fence ID. "+err.Error(), http.StatusUnauthorized)
return
}
fence, err, notFound := models.FindFenceByID(fenceID)
if err != nil || notFound {
http.Error(w, "Fence not Found", http.StatusNotFound)
return
}
rent := scores.GetGeoFenceRent(fence)
if user.Balance < rent {
rent = user.Balance
}
// GCM
err = jobs.QueueSendGcmRequest(gcm.NewMessage(
map[string]interface{}{"type": "onForeignFenceEntered", "fenceId": fence.ID, "fenceName": fence.Name, "ownerName": fence.User.Name}, user.GCMNotificationID))
if err != nil {
InternalServerError(err, w)
return
}
err = jobs.QueueSendGcmRequest(gcm.NewMessage(
map[string]interface{}{"type": "onOwnFenceEntered", "fenceId": fence.ID, "fenceName": fence.Name, "visitorName": user.Name}, fence.User.GCMNotificationID))
if err != nil {
InternalServerError(err, w)
return
}
// Activity Stream
err = activity.AddForeignVisitedActivity(user.ID, fence.User.Name, fence.User.ID, fence.Name, fence.ID, rent)
if err != nil {
InternalServerError(err, w)
return
}
err = activity.AddOwnFenceVisitedActivity(fence.User.ID, user.Name, user.ID, fence.Name, fence.ID, rent)
if err != nil {
InternalServerError(err, w)
return
}
// Balance Recording
redis.AddBalanceRecord(redis.GetBalanceRecordName(user.ID, redis.BalanceNameExpenseRent), rent)
redis.AddBalanceRecord(redis.GetBalanceRecordName(fence.User.ID, redis.BalanceNameEarningsRent), rent)
// Score Calculation
err = jobs.QueueRecordVisitRequest(fence.Lat, fence.Lon, time.Now()) //scores.RecordVisit(fence.Lat, fence.Lon)
if err != nil {
InternalServerError(err, w)
return
}
user.LastKnownGeoHash = geomodel.GeoCell(fence.Lat, fence.Lon, models.LastKnownGeoHashResolution)
user.Balance = user.Balance - rent
if user.Balance < 0 { // TODO: Decide what to do here.
user.Balance = 0
}
user.ExpensesRentAllTime = user.ExpensesRentAllTime + rent
err = user.Save()
if err != nil {
InternalServerError(err, w)
return
}
fence.User.Balance = fence.User.Balance + rent
fence.User.EarningsRentAllTime = user.ExpensesRentAllTime + rent
err = fence.User.Save()
if err != nil {
InternalServerError(err, w)
return
}
fence.TotalEarnings = fence.TotalEarnings + rent
fence.TotalVisitors = fence.TotalVisitors + 1
err = fence.Save()
if err != nil {
InternalServerError(err, w)
return
}
w.Write([]byte("{}"))
}
// 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)
}