func Candies(db models.DB) http.Handler {
type ret struct {
Candies []string `json:"candies"`
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
keys, err := db.GetAllKeys()
if err != nil {
jsonErr(w, http.StatusInternalServerError, err)
return
}
// Note: this is a potentially large scale operation.
// several improvements could be made:
// - paginate the results, to provide an upper bound on amount of work in a single request
// - send only the keys down to the browser, and have the browser do a GET on only the keys it needs
candies := []string{}
for _, key := range keys {
candy := new(models.Candy)
db.Get(key, candy)
candies = append(candies, candy.Name)
}
if err := json.NewEncoder(w).Encode(ret{Candies: candies}); err != nil {
jsonErr(w, http.StatusInternalServerError, err)
}
})
}
func CreateCandy(db models.DB) http.Handler {
type jsonInput struct {
Name string `json:"name"`
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
in := jsonInput{}
if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
jsonErr(w, http.StatusBadRequest, err)
return
}
candy := models.Candy{Name: in.Name}
if _, err := db.Upsert(bson.NewObjectId().String(), candy); err != nil {
jsonErr(w, http.StatusInternalServerError, err)
return
}
w.WriteHeader(http.StatusCreated)
})
}