import { create } from 'zustand';
import { persist } from 'zustand/middleware';

// Immutable default settings
const defaultSettings = {
  genAlphaSlang: false,
  // Add more settings here
};

const useLocalSettingsStore = create(
  persist(
    (set, get) => ({
      settings: { ...defaultSettings }, // clone to avoid shared reference

      // Get a setting by key
      getSetting: (key) => {
        const currentSettings = get().settings;
        return key in currentSettings ? currentSettings[key] : defaultSettings[key] ?? null;
      },

      // Set or update a specific setting
      setSetting: (key, value) => {
        console.log(`Updating setting ${key} to`, value); // <-- Debug log
        set((state) => ({
          settings: {
            ...state.settings,
            [key]: value,
          },
        }));
      },


      // Reset all settings to default
      resetSettings: () => {
        set({ settings: { ...defaultSettings } }); // create new object reference
      },

      // Reset a specific setting to its default
      resetSetting: (key) => {
        set((state) => ({
          settings: {
            ...state.settings,
            [key]: defaultSettings[key],
          },
        }));
      },

      // Merge default settings with current ones (useful on load)
      initializeSettings: () => {
        set((state) => ({
          settings: {
            ...defaultSettings,
            ...state.settings,
          },
        }));
      },
    }),
    {
      name: 'local-settings-storage',
      // Ensure only the 'settings' key is stored
      partialize: (state) => ({ settings: state.settings }),
      // Explicit localStorage usage (for compatibility)
      storage: {
        getItem: (name) => {
          const stored = localStorage.getItem(name);
          return stored ? JSON.parse(stored) : null;
        },
        setItem: (name, value) => {
          localStorage.setItem(name, JSON.stringify(value));
        },
        removeItem: (name) => {
          localStorage.removeItem(name);
        },
      }

    }
  )
);

if (import.meta.env.APP_ENV === "local") {
    mountStoreDevtool("LocalSettingsStore", useLocalSettingsStore);
}

export default useLocalSettingsStore;