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