func (p urlParams) user(paramPosition int, users interfaces.UserService) (ct.UserId, types.Error) {
user, err := ct.ParseUserId(p.params[paramPosition].Value)
if err != nil {
return ct.UserId{}, types.BadParamError(err.Error())
}
if users != nil {
exists, err := users.UserExists(user, user)
if err != nil {
return ct.UserId{}, err
}
if !exists {
return ct.UserId{}, types.NotFoundError("user '" + user.String() + "' doesn't exist")
}
}
return user, nil
}
func readAccessToken(
userService interfaces.UserService,
tokenService interfaces.TokenService,
req *http.Request,
) (ct.UserId, types.Error) {
token := req.URL.Query().Get("access_token")
if token == "" {
return ct.UserId{}, types.DefaultMissingTokenError
}
info, err := tokenService.ParseAccessToken(token)
if err != nil {
return ct.UserId{}, types.DefaultUnknownTokenError
}
exists, err := userService.UserExists(info.UserId(), info.UserId())
if err != nil {
return ct.UserId{}, types.DefaultUnknownTokenError
}
if !exists {
return ct.UserId{}, types.DefaultUnknownTokenError
}
return info.UserId(), nil
}