func GetTrip(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
tId := p.ByName("trip_id")
checkID, _ := strconv.Atoi(tId)
var tripData structure.DataStorage
findTarget := false
for key, value := range hmap {
if key == checkID {
tripData = value
findTarget = true
}
}
if findTarget == false {
w.WriteHeader(404)
return
}
tripResponse := structure.TripResponse{}
tripResponse.Id = tripData.Id
tripResponse.Status = tripData.Status
tripResponse.Starting_from_location_id = tripData.Starting_from_location_id
tripResponse.Best_route_location_id = tripData.Best_route_location_id
tripResponse.Total_uber_costs = tripData.Total_uber_costs
tripResponse.Total_distance = tripData.Total_distance
tripResponse.Total_uber_duration = tripData.Total_uber_duration
trip, _ := json.Marshal(tripResponse)
w.WriteHeader(200)
fmt.Fprintf(w, "%s", trip)
}
func CreateTrip(rw http.ResponseWriter, req *http.Request, p httprouter.Params) {
var tripRequest structure.TripRequest
json.NewDecoder(req.Body).Decode(&tripRequest)
tripData := structure.DataStorage{}
tripResponse := structure.TripResponse{}
tripResponse.Id = getID()
tripResponse.Status = "planning"
tripResponse.Starting_from_location_id = tripRequest.Starting_from_location_id
tripResponse.Best_route_location_id = tripRequest.Location_ids
getBestRoute(&tripResponse, &tripData, tripRequest.Starting_from_location_id, tripRequest.Location_ids)
hmap[tripResponse.Id] = tripData
trip, _ := json.Marshal(tripResponse)
rw.Header().Set("Content-Type", "application/json")
rw.WriteHeader(201)
fmt.Fprintf(rw, "%s", trip)
}
func getBestRoute(tripResponse *structure.TripResponse, tripData *structure.DataStorage, originId bson.ObjectId, targetId []bson.ObjectId) {
pmtTarget, err := permutation.NewPerm(targetId, nil)
if err != nil {
fmt.Println(err)
return
}
res := make([][]bson.ObjectId, 0, 0)
routePrice := make([]int, 0, 0)
routeDuration := make([]int, 0, 0)
routeDistance := make([]float64, 0, 0)
curPrice := 0
curDuration := 0
curDistance := 0.0
for result, err := pmtTarget.Next(); err == nil; result, err = pmtTarget.Next() {
for i := 0; i <= len(result.([]bson.ObjectId)); i++ {
var startLat float64
var startLng float64
var endLat float64
var endLng float64
minPrice := 0
minDuration := 0
minDistance := 0.0
response := structure.Response{}
if i == 0 {
if err := session.DB("cmpe273_project").C("hello").FindId(originId).One(&response); err != nil {
return
}
startLat = response.Coordinate.Lat
startLng = response.Coordinate.Lng
if err := session.DB("cmpe273_project").C("hello").FindId((result.([]bson.ObjectId))[i]).One(&response); err != nil {
return
}
endLat = response.Coordinate.Lat
endLng = response.Coordinate.Lng
} else if i == len(result.([]bson.ObjectId)) {
if err := session.DB("cmpe273_project").C("hello").FindId((result.([]bson.ObjectId))[i-1]).One(&response); err != nil {
return
}
startLat = response.Coordinate.Lat
startLng = response.Coordinate.Lng
if err := session.DB("cmpe273_project").C("hello").FindId(originId).One(&response); err != nil {
return
}
endLat = response.Coordinate.Lat
endLng = response.Coordinate.Lng
} else {
if err := session.DB("cmpe273_project").C("hello").FindId((result.([]bson.ObjectId))[i-1]).One(&response); err != nil {
return
}
startLat = response.Coordinate.Lat
startLng = response.Coordinate.Lng
if err := session.DB("cmpe273_project").C("hello").FindId((result.([]bson.ObjectId))[i]).One(&response); err != nil {
return
}
endLat = response.Coordinate.Lat
endLng = response.Coordinate.Lng
}
urlLeft := "https://api.uber.com/v1/estimates/price?"
// Server token cannot be told to others
urlRight := "start_latitude=" + strconv.FormatFloat(startLat, 'f', -1, 64) + "&start_longitude=" + strconv.FormatFloat(startLng, 'f', -1, 64) + "&end_latitude=" + strconv.FormatFloat(endLat, 'f', -1, 64) + "&end_longitude=" + strconv.FormatFloat(endLng, 'f', -1, 64) + "&server_token=PLEASE PUT YOUR OWN SERVER TOKEN HERE"
urlFormat := urlLeft + urlRight
getPrices, err := http.Get(urlFormat)
if err != nil {
fmt.Println("Get Prices Error", err)
panic(err)
}
var data structure.UberAPIResponse
json.NewDecoder(getPrices.Body).Decode(&data)
minPrice = data.Prices[0].LowEstimate
minDuration = data.Prices[0].Duration
minDistance = data.Prices[0].Distance
for i := 0; i < len(data.Prices); i++ {
if minPrice > data.Prices[i].LowEstimate && data.Prices[i].LowEstimate > 0 {
minPrice = data.Prices[i].LowEstimate
minDuration = data.Prices[i].Duration
minDistance = data.Prices[i].Distance
}
}
curPrice = curPrice + minPrice
curDuration = curDuration + minDuration
curDistance = curDistance + minDistance
}
routePrice = AppendInt(routePrice, curPrice)
routeDuration = AppendInt(routeDuration, curDuration)
routeDistance = AppendFloat(routeDistance, curDistance)
fmt.Println(curPrice)
fmt.Println(curDuration)
fmt.Println(curDistance)
curPrice = 0
curDuration = 0
curDistance = 0.0
res = AppendBsonId(res, result.([]bson.ObjectId))
fmt.Println(pmtTarget.Index(), result.([]bson.ObjectId))
}
index := 0
curPrice = 1000
for i := 0; i < len(routePrice); i++ {
if curPrice > routePrice[i] {
curPrice = routePrice[i]
index = i
}
}
fmt.Println("The best route of this trip is: ")
fmt.Println(res[index])
fmt.Println(routePrice[index])
fmt.Println(routeDuration[index])
fmt.Println(routeDistance[index])
tripResponse.Best_route_location_id = res[index]
tripResponse.Total_distance = routeDistance[index]
tripResponse.Total_uber_costs = routePrice[index]
tripResponse.Total_uber_duration = routeDuration[index]
tripData.Id = tripResponse.Id
tripData.Index = 0
tripData.Status = tripResponse.Status
tripData.Starting_from_location_id = tripResponse.Starting_from_location_id
tripData.Best_route_location_id = res[index]
tripData.Total_uber_costs = tripResponse.Total_uber_costs
tripData.Total_uber_duration = tripResponse.Total_uber_duration
tripData.Total_distance = tripResponse.Total_distance
}