import { User, UserRole, UserProfile } from '../types';
import { api, setAuthToken, removeAuthToken } from './api';

export const getUsers = (): any[] => {
  // Not used in frontend anymore
  return [];
};

export const login = async (email: string, password: string): Promise<{ success: boolean; user?: User; error?: string }> => {
  try {
    const res = await api.post('/auth/login', { email, password });
    if (res.success) {
      setAuthToken(res.token);
      return { success: true, user: res.user };
    }
    return { success: false, error: res.error };
  } catch (e: any) {
    try {
      const err = JSON.parse(e.message);
      return { success: false, error: err.error || 'Login failed' };
    } catch {
      return { success: false, error: 'Login failed' };
    }
  }
};

export const createUser = async (email: string, password: string): Promise<{ success: boolean; error?: string }> => {
  try {
    const res = await api.post('/auth/register', { email, password });
    if (res.success) {
      setAuthToken(res.token);
      return { success: true };
    }
    return { success: false, error: res.error };
  } catch (e: any) {
    try {
      const err = JSON.parse(e.message);
      return { success: false, error: err.error || 'Registration failed' };
    } catch {
      return { success: false, error: 'Registration failed' };
    }
  }
};

export const deleteUser = async (userId: string) => {
  // Admin only, not implemented in frontend UI yet
};

export const toggleBlockUser = (userId: string, block: boolean) => {
  // Admin only
};

export const adminResetPassword = (userId: string, newPass: string) => {
  // Admin only
};

export const updateUserProfile = async (userId: string, profile: Partial<UserProfile>) => {
  // Not implemented in backend yet as a separate endpoint, 
  // but typically this would be a PATCH /users/me/profile
  // For now, let's skip or implement if needed.
  // The session save updates weight.
};

export const changePassword = (userId: string, newPassword: string) => {
  // Not implemented
};

export const getCurrentUserProfile = (userId: string): UserProfile | undefined => {
  // This was synchronous. Now it needs to be async or fetched on load.
  // For now, we return undefined and let the app fetch it.
  return undefined;
}