/*
* CreateLocation - creates an individual location resource and stores it in mongolab
*/
func (lc LocationController) CreateLocation(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
// Stub a location to be populated from the body
request := model.Location{}
// Populate the location data
json.NewDecoder(r.Body).Decode(&request)
// Add an Id
request.Id = bson.NewObjectId()
//Call Google Maps API
addressStr, fieldsMissing := FormatAddressString(request)
if fieldsMissing == true {
newErrorResponse := model.Error{}
newErrorResponse.Code = "MISSING_REQUIRED_FIELDS"
newErrorResponse.Description = "Address fields are empty. Please enter a valid address."
newErrorResponse.Fieldname = "Address,City,State,ZipCode"
newErrorJson, _ := json.Marshal(newErrorResponse)
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(400)
fmt.Fprintf(w, "%s", newErrorJson)
} else {
latitude, longitude, invalidAddress, errorCode, errorMsg := CallGoogleAPI(addressStr)
if invalidAddress {
newErrorResponse := model.Error{}
newErrorResponse.Code = errorCode
newErrorResponse.Description = errorMsg
newErrorResponse.Fieldname = ""
newErrorJson, _ := json.Marshal(newErrorResponse)
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(400)
fmt.Fprintf(w, "%s", newErrorJson)
} else {
request.Coordinate.Latitude = latitude
request.Coordinate.Longitude = longitude
//Write the location to mongo
lc.session.DB("cmpe273-assignment2").C("locations").Insert(request)
fmt.Println("Location data written successfully to MongoLab!")
fmt.Println("------------------------------------------------------------")
// Marshal provided interface into JSON structure
requestJson, _ := json.Marshal(request)
// Write content-type, statuscode, payload
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(201)
fmt.Fprintf(w, "%s", requestJson)
}
}
}
/*
* UpdateLocation - updates an individual location resource (based on id) stored in mongolab
*/
func (lc LocationController) UpdateLocation(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
// Grab id
id := p.ByName("id")
// Verify id is ObjectId, otherwise bail
if !bson.IsObjectIdHex(id) {
w.WriteHeader(404)
return
}
// Grab id
oid := bson.ObjectIdHex(id)
// Stub a location to be populated from the body
request := model.Location{}
// Populate the location data
json.NewDecoder(r.Body).Decode(&request)
//Call Google Maps API
addressStr, fieldsMissing := FormatAddressString(request)
if fieldsMissing == true {
newErrorResponse := model.Error{}
newErrorResponse.Code = "MISSING_REQUIRED_FIELDS"
newErrorResponse.Description = "Address fields are empty. Please enter a valid address."
newErrorResponse.Fieldname = "Address,City,State,ZipCode"
newErrorJson, _ := json.Marshal(newErrorResponse)
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(400)
fmt.Fprintf(w, "%s", newErrorJson)
} else {
latitude, longitude, invalidAddress, errorCode, errorMsg := CallGoogleAPI(addressStr)
if invalidAddress {
newErrorResponse := model.Error{}
newErrorResponse.Code = errorCode
newErrorResponse.Description = errorMsg
newErrorResponse.Fieldname = ""
newErrorJson, _ := json.Marshal(newErrorResponse)
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(400)
fmt.Fprintf(w, "%s", newErrorJson)
} else {
//fmt.Printf("Returned Values:%f,%f\n", (latitude),(longitude));
request.Coordinate.Latitude = latitude
request.Coordinate.Longitude = longitude
//Use the existing Id
request.Id = oid
//To Update the location to mongodb
collection := lc.session.DB("cmpe273-assignment2").C("locations")
// Stub location For now, just to fetch the "name"
location := model.Location{}
if err := collection.FindId(oid).One(&location); err != nil {
fmt.Println("Error : Error received while fetching existing location resource: ", err)
fmt.Println("------------------------------------------------------------")
} else {
var name string
if request.Name == "" {
name = location.Name
//fmt.Println("No name was provided for update, so using the existing one : ",name)
} else {
name = request.Name
//fmt.Println("Name was provided for update, so using the new one : ",name)
}
// Fetch location
oldLocation := bson.M{"id": oid}
if err := collection.FindId(oid).One(&oldLocation); err != nil {
w.WriteHeader(404)
return
}
//fmt.Println("OldCollection : ", oldLocation)
newLocation := bson.M{"$set": bson.M{"name": name, "address": request.Address, "city": request.City, "state": request.State, "zipcode": request.Zipcode,
"coordinate": bson.M{"lat": request.Coordinate.Latitude, "lng": request.Coordinate.Longitude}}}
//bson.M{"$coordinate": bson.M{"lat": request.Coordinate.Latitude, "lng": request.Coordinate.Longitude } }
//fmt.Println("NewCollection : ", newLocation)
err := collection.Update(oldLocation, newLocation)
if err != nil {
fmt.Println("Error : Error received while updating lcoation : ", err)
fmt.Println("------------------------------------------------------------")
} else {
//Fetch new location
newLocationResponse := model.Location{}
if err := collection.FindId(oid).One(&newLocationResponse); err != nil {
fmt.Println("Error : Error received while fetching updated location!: ", err)
}
// Marshal provided interface into JSON structure
newLocationJson, _ := json.Marshal(newLocationResponse)
// Write content-type, statuscode, payload
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(201)
fmt.Fprintf(w, "%s", newLocationJson)
fmt.Println("Location resource updated successfully in MongoLab!")
fmt.Println("------------------------------------------------------------")
}
}
}
}
}