!7

cmodule Google {
  S query;
  L<SS> result;
  switchable S language = "lang_en";
  
  transient int maxInputLength = 120;
  transient NotTooOften notTooOften = onlyEvery10Secs();
  transient WaitForStableValue<S> waitForStableValue = new(5.0);
  transient volatile bool calculating;
  transient JTable table;
  transient SimpleLiveValue<S> lvQuery = stringLiveValue();

  visual jLiveValueSection(lvQuery, dataToTable_uneditable(result, table = sexyTable()));

  void unvisualize() { table = null; }  
  
  start {
    lvQuery.set(query);
    ownTimer(doEvery(1000, r updateMe));
  }
  
  void update {
    S s = dm_getInterestingString();
    if (nempty(s) && l(s) <= maxInputLength) { // TODO: more quality checks?
      waitForStableValue.set(s);
    }
    
    fS q = waitForStableValue!;
    if (nempty(q) && neq(q, query) && allowedToGoogleSomething())
      dm_q(r { calc(q) });
  }
  
  void calc(S q) {
    if (eq(query, q)) ret;
    query = q; result = null;
    lvQuery.set(q);
    temp tempSetField(this, calculating := true);
    L<T3S> l = quickGoogle2(q, language);
    result = map(l, func(T3S t) -> SS {
      litorderedmap("Result" := second(t), "Desc" := nullOnEmpty(third(t)), "Link" := first(t))
    });
    dataToTable_uneditable_ifHasTable(result, table);
  }
  
  bool allowedToGoogleSomething() {
    ret notTooOften.canDoAgain_willDoIfTrue();
  }
}