Maybe/app/javascript/controllers/account_collapse_controller.js

import { Controller } from "@hotwired/stimulus";

// Connects to data-controller="account-collapse"
export default class extends Controller {
  static values = { type: String };
  initialToggle = false;
  STORAGE_NAME = "accountCollapseStates";

  connect() {
    this.element.addEventListener("toggle", this.onToggle);
    this.updateFromLocalStorage();
  }

  disconnect() {
    this.element.removeEventListener("toggle", this.onToggle);
  }

  onToggle = () => {
    if (this.initialToggle) {
      this.initialToggle = false;
      return;
    }

    const items = this.getItemsFromLocalStorage();
    if (items.has(this.typeValue)) {
      items.delete(this.typeValue);
    } else {
      items.add(this.typeValue);
    }
    localStorage.setItem(this.STORAGE_NAME, JSON.stringify([...items]));
  };

  updateFromLocalStorage() {
    const items = this.getItemsFromLocalStorage();

    if (items.has(this.typeValue)) {
      this.initialToggle = true;
      this.element.setAttribute("open", "");
    }
  }

  getItemsFromLocalStorage() {
    try {
      const items = localStorage.getItem(this.STORAGE_NAME);
      return new Set(items ? JSON.parse(items) : []);
    } catch (error) {
      console.error("Error parsing items from localStorage:", error);
      return new Set();
    }
  }
}