(function () {
  if (!window.recentSearches) {
    init();
  }

  function init() {
    const RECENT_SEARCHES_LIMIT = 5;
    const RECENT_SEARCHES_DATA_ATTR = "add-to-recent-searches";
    const STORAGE_KEY = "buscas-recentes";

    window.recentSearches = {
      get: getRecentSearches,
      save: saveSearch,
      init,
      DATA_ATTRIBUTE: RECENT_SEARCHES_DATA_ATTR,
    };

    // Inicializa buscando inputs com o data-attribute
    function init(scope = document) {
      const input = scope.querySelector(
        `input[data-${RECENT_SEARCHES_DATA_ATTR}="true"]`
      );

      if (!input) return;

      const form = input.form;

      if (!form) return;

      // Captura submit do formulário (Enter OU clique no botão)
      form.addEventListener("submit", function (e) {
        const value = input.value.trim();
        if (value) {
          saveSearch(value);
        }
      });

      // Escuta Enter diretamente no input (caso o form não seja padrão)
      input.addEventListener("keydown", function (e) {
        if (e.key === "Enter") {
          const value = input.value.trim();
          if (value) saveSearch(value);
        }
      });
    }

    function saveSearch(search) {
      const recent = getRecentSearches().filter(v => v !== search);

      recent.unshift(search);

      if (recent.length > RECENT_SEARCHES_LIMIT) {
        recent.length = RECENT_SEARCHES_LIMIT;
      }

      localStorage.setItem(STORAGE_KEY, JSON.stringify(recent));
    }

    function getRecentSearches() {
      return JSON.parse(localStorage.getItem(STORAGE_KEY) || "[]");
    }
  }
})();