parameterized the weather handler with input validation

weather.go

@@ -51,10 +51,21 @@ func WeatherHandler(w http.ResponseWriter, r *http.Request) {
 	switch r.Method {
 	case http.MethodGet:
 		var result = FinalReport{}
+		lat := r.FormValue("lat")
+		long := r.FormValue("long")
 
-		result, err := GetSingleForecast(58.8569687273594,  5.85660630854479)
+		latitude, err := GetFloat(lat)
+		longitude, err2 := GetFloat(long)
+
+		// If input is not valid throw error
+		if err != nil || err2 != nil || longitude == 0 || latitude == 0 {
+			http.Error(w, "Latitude/Longitude must be valid floats", http.StatusBadRequest)
+			return
+		}
+
+		result, err = GetSingleForecast(latitude,  longitude)
 		if err != nil {
-			fmt.Println("Handler request err: ", err)
+			http.Error(w, "Could not get forecast", http.StatusInternalServerError)
 		}
 
 		w.Header().Set("content-type", "application/json")
@@ -69,6 +80,15 @@ func WeatherHandler(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+// Checks and returns valid float64
+func GetFloat(query string) (float64, error) {
+	result, err := strconv.ParseFloat(query, 64)
+	if err == nil {
+		return result, nil
+	}
+	return 0, err
+}
+
 // Parses the response from Metrologisk institutt,
 func ParseWeatherData(data []ForecastData) (FinalReport, error) {
 	var result = FinalReport{}
@@ -79,7 +99,7 @@ func ParseWeatherData(data []ForecastData) (FinalReport, error) {
 	// Sort thorugh the response
 	for i := 0; i < len(data); i++ {
 		// Format time.Time values for easier to read output
-		date := data[i].From.Format("02/01/06")
+		date := data[i].From.Format("01/02/06")
 		hour := data[i].From.Format("15:04")
 
 		// Condition for an object containing temperature data, other field not populated