//ShortenHandler generates a HTTP handler for a shortening URLs given a datastore backend.
func ShortenHandler(db database.ShortenBackend) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
returnJSON(nil, &httpError{fmt.Sprintf("couldn't parse form: %s", err.Error()), 500}, w)
return
}
slug := r.PostForm.Get("slug")
longURL := r.PostForm.Get("long_url")
owner := r.PostForm.Get("owner")
for _, res := range reserved {
if slug == res {
returnJSON(nil, &httpError{fmt.Sprintf("That slug is reserved: %s", slug), 400}, w)
return
}
}
if len(slug) == 0 {
returnJSON(nil, &httpError{"must provide a slug", 400}, w)
return
}
if len(longURL) == 0 {
returnJSON(nil, &httpError{"must provide a destination URL", 400}, w)
return
}
// for now set expiry to never
var t time.Time
err := db.ShortenURL(slug, longURL, owner, t)
var hErr *httpError = nil
if err != nil {
hErr = &httpError{err.Error(), 500}
}
returnJSON(nil, hErr, w)
return
}
}
