import { UserAccount, LeadData, AdminConfig } from '../types';

const KEYS = {
  USERS: 'rl_users',
  LEADS: 'rl_leads',
  CONFIG: 'rl_config',
  SESSION: 'rl_session' // Stores the ID of the currently logged-in user
};

export const storageService = {
  // --- Users ---
  getUsers: (): UserAccount[] => {
    try {
      const data = localStorage.getItem(KEYS.USERS);
      return data ? JSON.parse(data) : [];
    } catch (e) { return []; }
  },
  saveUsers: (users: UserAccount[]) => {
    localStorage.setItem(KEYS.USERS, JSON.stringify(users));
  },

  // --- Leads ---
  getLeads: (): LeadData[] => {
    try {
      const data = localStorage.getItem(KEYS.LEADS);
      return data ? JSON.parse(data) : [];
    } catch (e) { return []; }
  },
  saveLeads: (leads: LeadData[]) => {
    localStorage.setItem(KEYS.LEADS, JSON.stringify(leads));
  },

  // --- Admin Config ---
  getAdminConfig: (): AdminConfig | null => {
    try {
      const data = localStorage.getItem(KEYS.CONFIG);
      return data ? JSON.parse(data) : null;
    } catch (e) { return null; }
  },
  saveAdminConfig: (config: AdminConfig) => {
    localStorage.setItem(KEYS.CONFIG, JSON.stringify(config));
  },

  // --- Session (Auto Login) ---
  getSessionUserId: (): string | null => {
    return localStorage.getItem(KEYS.SESSION);
  },
  setSessionUserId: (id: string) => {
    localStorage.setItem(KEYS.SESSION, id);
  },
  clearSession: () => {
    localStorage.removeItem(KEYS.SESSION);
  }
};