imlemented user firendly feedback with invalid or no given country code

main.go

@@ -11,7 +11,6 @@ import (
 	//given country, 2-letter country codes (ISO 3166-2).
 	//limit is the number of cities that are listed in the response.
 
-
 // Struktur for å lagre data om landene i info endepunktet
 type CountryInfo struct {
 	Name struct {
@@ -35,6 +34,7 @@ type CountryInfo struct {
 					"Description": "Get information about a country using its ISO 3166-1 alpha-2 code.",
 					"URL":         "http://localhost:8080/countryinfo/v1/info/{country_code}{?limit=10}",
 					"Example":     "http://localhost:8080/countryinfo/v1/info/NO",
+				"Endpoint 2" : "To ble implemented",
 				},
 			"WELCOME": "Welcome to the Country Info API",
 			},
@@ -46,6 +46,7 @@ type CountryInfo struct {
 
 // En funksjon som henter data fra det eksterne API-et ved landkode
 func getCountryDataByCode(countryCode string) (*CountryInfo, error) {
+
 	//bygge en URL for API kallet
 	url := fmt.Sprintf("http://129.241.150.113:8080/v3.1/alpha/%s", countryCode)
 
@@ -56,6 +57,7 @@ func getCountryDataByCode(countryCode string) (*CountryInfo, error) {
 	}
 	defer resp.Body.Close()
 
+
 	// Sjekk om API-kallet var vellykket (statuskode 200)
 	if resp.StatusCode != http.StatusOK {
 		return nil, fmt.Errorf("error retrieving country data, status code: %d", resp.StatusCode)
@@ -82,19 +84,23 @@ func getCountryDataByCode(countryCode string) (*CountryInfo, error) {
 // slår opp dataene
 // REturnerer dem som JSON
 func handler(w http.ResponseWriter, r *http.Request) {
-	// Hent landkode fra path (for eksempel "/countryinfo/v1/info/NO")
+	// Hent landkode fra path
 	parts := strings.Split(r.URL.Path, "/")
 	if len(parts) < 5 {
-		http.Error(w, "Invalid format. Please use the format /countryinfo/v1/info/{countryCode}. Example: /countryinfo/v1/info/NO", http.StatusBadRequest)
+		http.Error(w, "Invalid format. Please use the format /countryinfo/v1/info/{countryCode}{?limit=10}. Example: /countryinfo/v1/info/NO", http.StatusBadRequest)
 		return
 	}
 	countryCode := parts[4] // Landkoden er den 5. delen av pathen (fra 0)
 
 	// Hent data fra API ved landkode
+	//country inneholder data om alt går bra
 	country, err := getCountryDataByCode(countryCode)
+	//err inneholder feil hvis noe går galt, ikke finner landkode
 	if err != nil {
-		http.Error(w, fmt.Sprintf("Error retrieving  data for country code: %s. Check if the country code is correct.\nExample: /countryinfo/v1/info/NO", err.Error()), http.StatusInternalServerError)
-		return
+		http.Error(w, fmt.Sprintf(
+			"Error retrieving data for country code: %s. Check if the country code is correct.\nExample: /countryinfo/v1/info/NO\nError: %s",
+			countryCode, err.Error(),
+		), http.StatusInternalServerError)
 	}