func Patch(w http.ResponseWriter, r *http.Request) {
ctx := appengine.NewContext(r)
listId, err := strconv.ParseInt(mux.Vars(r)["listId"], 10, 64)
if err != nil {
jsonError.NewNotFound("").HttpError(w)
return
}
body, err := ioutil.ReadAll(r.Body)
if err != nil {
jsonError.NewBadRequest("").HttpError(w)
return
}
obj, err := jsonpatch.DecodePatch(body)
if err != nil {
jsonError.NewBadRequest("").HttpError(w)
return
}
var list model.List
key := datastore.NewKey(ctx, "List", "", listId, nil)
if err := datastore.Get(ctx, key, &list); err != nil {
if err == datastore.ErrNoSuchEntity {
jsonError.NewNotFound("").HttpError(w)
return
}
}
jsonList, err := json.Marshal(list)
if err != nil {
logger.Fatal(err.Error())
jsonError.NewInternalServerError("").HttpError(w)
return
}
out, err := obj.Apply(jsonList)
if err != nil {
jsonError.NewBadRequest("").HttpError(w)
return
}
var patchedList model.List
if err := json.Unmarshal(out, &patchedList); err != nil {
jsonError.NewBadRequest("").HttpError(w)
return
}
if _, err := datastore.Put(ctx, key, &patchedList); err != nil {
logger.Fatal(err.Error())
jsonError.NewInternalServerError(err.Error()).HttpError(w)
return
}
w.WriteHeader(http.StatusNoContent)
}
func Get(w http.ResponseWriter, r *http.Request) {
ctx := appengine.NewContext(r)
listId, err := strconv.ParseInt(mux.Vars(r)["listId"], 10, 64)
if err != nil {
jsonError.NewBadRequest(err.Error()).HttpError(w)
return
}
key := datastore.NewKey(ctx, "List", "", listId, nil)
var list model.List
if err := datastore.Get(ctx, key, &list); err != nil {
if err == datastore.ErrNoSuchEntity {
jsonError.NewNotFound(err.Error())
return
}
}
enc := json.NewEncoder(w)
if err := enc.Encode(list); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}