import { acceptHMRUpdate, defineStore } from "pinia";

export const useUserStore = defineStore("user", () => {
  /**
   * Current name of the user.
   */
  const savedName = ref("");
  const previousNames = ref(new Set<string>());

  const usedNames = computed(() => Array.from(previousNames.value));
  const otherNames = computed(() => usedNames.value.filter(name => name !== savedName.value));

  /**
   * Changes the current name of the user and saves the one that was used
   * before.
   *
   * @param name - new name to set
   */
  function setNewName(name: string) {
    if (savedName.value) {
      previousNames.value.add(savedName.value);
    }

    savedName.value = name;
  }

  return {
    setNewName,
    otherNames,
    savedName,
  };
});

if (import.meta.hot) {
  import.meta.hot.accept(acceptHMRUpdate(useUserStore as any, import.meta.hot));
}