forked from googlemaps/google-maps-services-go
/
main.go
193 lines (174 loc) · 6.04 KB
/
main.go
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// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package main contains a simple command line tool for DistanceMatrix
// Directions docs: https://developers.google.com/maps/documentation/distancematrix/
package main
import (
"context"
"flag"
"fmt"
"log"
"os"
"strings"
"github.com/kr/pretty"
"googlemaps.github.io/maps"
)
var (
apiKey = flag.String("key", "", "API Key for using Google Maps API.")
clientID = flag.String("client_id", "", "ClientID for Maps for Work API access.")
signature = flag.String("signature", "", "Signature for Maps for Work API access.")
origins = flag.String("origins", "", "One or more addresses and/or textual latitude/longitude values, separated with the pipe (|) character, from which to calculate distance and time.")
destinations = flag.String("destinations", "", "One or more addresses and/or textual latitude/longitude values, separated with the pipe (|) character, to which to calculate distance and time.")
mode = flag.String("mode", "", "Specifies the mode of transport to use when calculating distance.")
language = flag.String("language", "", "The language in which to return results.")
avoid = flag.String("avoid", "", "Introduces restrictions to the route.")
units = flag.String("units", "", "Specifies the unit system to use when expressing distance as text.")
departureTime = flag.String("departure_time", "", "The desired time of departure.")
arrivalTime = flag.String("arrival_time", "", "Specifies the desired time of arrival.")
transitMode = flag.String("transit_mode", "", "Specifies one or more preferred modes of transit.")
transitRoutingPreference = flag.String("transit_routing_preference", "", "Specifies preferences for transit requests.")
trafficModel = flag.String("traffic_model", "", "Specifies the assumptions to use when calculating time in traffic.")
)
func usageAndExit(msg string) {
fmt.Fprintln(os.Stderr, msg)
fmt.Println("Flags:")
flag.PrintDefaults()
os.Exit(2)
}
func check(err error) {
if err != nil {
log.Fatalf("fatal error: %s", err)
}
}
func main() {
flag.Parse()
var client *maps.Client
var err error
if *apiKey != "" {
client, err = maps.NewClient(maps.WithAPIKey(*apiKey))
} else if *clientID != "" || *signature != "" {
client, err = maps.NewClient(maps.WithClientIDAndSignature(*clientID, *signature))
} else {
usageAndExit("Please specify an API Key, or Client ID and Signature.")
}
check(err)
r := &maps.DistanceMatrixRequest{
Language: *language,
DepartureTime: *departureTime,
ArrivalTime: *arrivalTime,
}
if *origins != "" {
r.Origins = strings.Split(*origins, "|")
}
if *destinations != "" {
r.Destinations = strings.Split(*destinations, "|")
}
lookupMode(*mode, r)
lookupAvoid(*avoid, r)
lookupUnits(*units, r)
lookupTransitMode(*transitMode, r)
lookupTransitRoutingPreference(*transitRoutingPreference, r)
lookupTrafficModel(*trafficModel, r)
resp, err := client.DistanceMatrix(context.Background(), r)
check(err)
pretty.Println(resp)
}
func lookupMode(mode string, r *maps.DistanceMatrixRequest) {
switch mode {
case "driving":
r.Mode = maps.TravelModeDriving
case "walking":
r.Mode = maps.TravelModeWalking
case "bicycling":
r.Mode = maps.TravelModeBicycling
case "transit":
r.Mode = maps.TravelModeTransit
case "":
// ignore
default:
log.Fatalf("Unknown mode %s", mode)
}
}
func lookupAvoid(avoid string, r *maps.DistanceMatrixRequest) {
switch avoid {
case "tolls":
r.Avoid = maps.AvoidTolls
case "highways":
r.Avoid = maps.AvoidHighways
case "ferries":
r.Avoid = maps.AvoidFerries
case "":
// ignore
default:
log.Fatalf("Unknown avoid restriction %s", avoid)
}
}
func lookupUnits(units string, r *maps.DistanceMatrixRequest) {
switch units {
case "metric":
r.Units = maps.UnitsMetric
case "imperial":
r.Units = maps.UnitsImperial
case "":
// ignore
default:
log.Fatalf("Unknown units %s", units)
}
}
func lookupTransitMode(transitMode string, r *maps.DistanceMatrixRequest) {
if transitMode != "" {
for _, m := range strings.Split(transitMode, "|") {
switch m {
case "bus":
r.TransitMode = append(r.TransitMode, maps.TransitModeBus)
case "subway":
r.TransitMode = append(r.TransitMode, maps.TransitModeSubway)
case "train":
r.TransitMode = append(r.TransitMode, maps.TransitModeTrain)
case "tram":
r.TransitMode = append(r.TransitMode, maps.TransitModeTram)
case "rail":
r.TransitMode = append(r.TransitMode, maps.TransitModeRail)
default:
log.Fatalf("Unknown transit_mode %s", m)
}
}
}
}
func lookupTransitRoutingPreference(transitRoutingPreference string, r *maps.DistanceMatrixRequest) {
switch transitRoutingPreference {
case "fewer_transfers":
r.TransitRoutingPreference = maps.TransitRoutingPreferenceFewerTransfers
case "less_walking":
r.TransitRoutingPreference = maps.TransitRoutingPreferenceLessWalking
case "":
// ignore
default:
log.Fatalf("Unknown transit routing preference %s", transitRoutingPreference)
}
}
func lookupTrafficModel(trafficModel string, r *maps.DistanceMatrixRequest) {
switch trafficModel {
case "best_guess":
r.TrafficModel = maps.TrafficModelBestGuess
case "pessimistic":
r.TrafficModel = maps.TrafficModelPessimistic
case "optimistic":
r.TrafficModel = maps.TrafficModelOptimistic
case "":
// ignore
default:
log.Fatalf("Unknown traffic_model %s", trafficModel)
}
}