// Handle requests to /reset
func handleReset(w http.ResponseWriter, req *http.Request) *apiutil.Error {
switch req.Method {
case "GET":
if req.URL.Path != "/reset" && req.URL.Path != "/reset/" {
return errorInvalidRequest(nil, messageInvalidPath)
}
err := store.Init()
if err != nil {
return errorInternal(err, messageErrorResettingStorage)
}
err = apiutil.WriteJsonResponse(w, &resetResponse{Message: "Reset completed"}, http.StatusOK)
if err != nil {
return errorInternal(err, messageUnableToWriteResponse)
}
default:
return errorInvalidRequest(nil, messageInvalidHttpMethod)
}
return nil
}
// Handle requests to /item
func handleItem(w http.ResponseWriter, req *http.Request) *apiutil.Error {
switch req.Method {
case "GET":
if req.URL.Path != "/item" && req.URL.Path != "/item/" {
return errorInvalidRequest(nil, messageInvalidPath)
}
sl, err := store.List()
if err != nil {
return errorInternal(err, messageUnableToListItems)
}
// Storage and api schemas are not necessarily the same, translate.
l := make([]*item, 0, len(sl))
for _, it := range sl {
l = append(l, &item{Id: it.Id, Value: it.Value})
}
err = apiutil.WriteJsonResponse(w, &listResponse{Items: l}, http.StatusOK)
if err != nil {
return errorInternal(err, messageUnableToWriteResponse)
}
case "POST":
if req.URL.Path != "/item" && req.URL.Path != "/item/" {
return errorInvalidRequest(nil, messageInvalidPath)
}
var cr createRequest
err := json.NewDecoder(req.Body).Decode(&cr)
if err != nil {
return errorInvalidRequest(err, messageInvalidRequest)
}
if serr := validateField("value", cr.Value, limitItemValueLength); serr != nil {
return serr
}
id, err := store.Create(cr.Value)
if err != nil {
return errorInternal(err, messageErrorCreatingItem)
}
err = apiutil.WriteJsonResponse(w, &createResponse{Id: id}, http.StatusOK)
if err != nil {
return errorInternal(err, messageUnableToWriteResponse)
}
case "DELETE":
if !strings.HasPrefix(req.URL.Path, "/item/") {
return errorInvalidRequest(nil, messageInvalidPath)
}
id := apiutil.LastUrlSegment(req)
if serr := validateField("id", id, limitItemIdLength); serr != nil {
return serr
}
err := store.Remove(id)
if err != nil {
return errorInternal(err, messageErrorRemovingItem)
}
err = apiutil.WriteJsonResponse(w, &deleteResponse{Id: id}, http.StatusOK)
if err != nil {
return errorInternal(err, messageUnableToWriteResponse)
}
default:
return errorInvalidRequest(nil, messageInvalidHttpMethod)
}
return nil
}