make it work for my tram board

adds webserer with endpoint /line?number=3

you need to specify a post body text using b64-encoded, semicolon-separated names of the stops

index of stop name corresponds to returned value (led index)

internal/maps/trips.go

@@ -2,6 +2,7 @@ package maps
 
 import (
 	"encoding/json"
+	"io"
 	"log"
 	"net/http"
 	"shellixa/puvetra/internal/types"
@@ -16,9 +17,12 @@ func GetTrips() []types.MapTrip {
 	}
 	q := req.URL.Query()
 
-	now := time.Now().Format(time.RFC3339)
-  q.Add("startTime", now)
-  q.Add("endTime", now)
+	now := time.Now()
+	delta := time.Minute * 5
+	lowerBound := now.Add(-delta).Format(time.RFC3339)
+	upperBound := now.Add(delta).Format(time.RFC3339)
+  q.Add("startTime", lowerBound)
+  q.Add("endTime", upperBound)
 	q.Add("min", "51.1626,13.5609")
 	q.Add("max", "50.9973,13.8596")
 	q.Add("zoom", "14")
@@ -34,9 +38,11 @@ func GetTrips() []types.MapTrip {
 	defer response.Body.Close()
 
 	var trips []types.MapTrip 
-	if err := json.NewDecoder(response.Body).Decode(&trips); err != nil {
+	buffer, _ := io.ReadAll(response.Body)
+	if err = json.Unmarshal(buffer, &trips); err != nil {
 		log.Fatal(err)
 	}
+	log.Printf("component='Transitous API' message='Response was %d bytes'", len(buffer))
 
 	return trips
 

internal/timetable/trips.go

@@ -0,0 +1,34 @@
+package timetable
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"shellixa/puvetra/internal/types"
+)
+
+func GetTrip(tripId string) types.Trip {
+	client := http.Client{}
+	url := fmt.Sprintf("https://api.transitous.org/api/v6/trip?tripId=%s", tripId)
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	response, err := client.Do(req)
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	defer response.Body.Close()
+
+	var trip types.Trip
+	if err := json.NewDecoder(response.Body).Decode(&trip); err != nil {
+		log.Fatal(err)
+	}
+
+	return trip
+
+}

internal/types/types.go

@@ -1,5 +1,7 @@
 package types
 
+import "time"
+
 
 type TripMeta struct {
 	TripId string
@@ -12,20 +14,20 @@ type MapTrip struct {
 	RouteColor string
 	Mode string
 	Distance float32
-	Departure string
-	Arrival string
+	Departure time.Time 
+	Arrival time.Time
 	From Place
 	To Place
-	ScheduledDeparture string
-	ScheduledArrival string
+	ScheduledDeparture time.Time
+	ScheduledArrival time.Time
 	RealTime bool
 	Polyline string
 }
 
 type Trip struct {
 	Duration int64
-	StartTime string
-	EndTine string
+	StartTime time.Time
+	EndTine time.Time
 	Transfers int
 	Id string
 	Legs []TripLeg
@@ -36,10 +38,10 @@ type TripLeg struct {
 	From Place
 	To Place
 	Duration int64
-	StartTime string
-	EndTime string
-	ScheduledStartTime string
-	ScheduledEndTime string
+	StartTime time.Time
+	EndTime time.Time
+	ScheduledStartTime time.Time
+	ScheduledEndTime time.Time
 	RealTime bool
 	Scheduled bool
 	Distance float32
@@ -53,8 +55,8 @@ type Place struct {
 	StopId string
 	Lat float32
 	Lon float32
-	Arrival string
-	Departure string
+	Arrival time.Time
+	Departure time.Time
 	Track string
 	StopCode string
 	Description string