import { useState, useEffect, useCallback } from 'react';
import api from '@/lib/api';
import { showToast } from '@/components/ui/toast-utils';

export interface User {
  id: string;
  email: string;
  full_name: string;
  is_active: boolean;
  created_at: string;
}

export function useProfile() {
  const [user, setUser] = useState<User | null>(null);
  const [loading, setLoading] = useState<boolean>(true);
  const [error, setError] = useState<string | null>(null);

  // Fetch user profile
  const getProfile = useCallback(async () => {
    setLoading(true);
    setError(null);
    try {
      const response = await api.get('/auth/me');
      const userData = response.data;
      setUser(userData);
      return userData;
    } catch (err: any) {
      const message = err.response?.data?.detail || 'Failed to load profile';
      setError(message);
      showToast({
        title: 'Error loading profile',
        description: message,
        variant: 'destructive'
      });
      return null;
    } finally {
      setLoading(false);
    }
  }, []);

  // Update user profile
  const updateProfile = useCallback(async (data: Partial<User>) => {
    setLoading(true);
    setError(null);
    try {
      const response = await api.put('/auth/me', data);
      const updatedUser = response.data;
      setUser(updatedUser);
      showToast({
        title: 'Profile updated',
        description: 'Your profile has been successfully updated'
      });
      return updatedUser;
    } catch (err: any) {
      const message = err.response?.data?.detail || 'Failed to update profile';
      setError(message);
      showToast({
        title: 'Update failed',
        description: message,
        variant: 'destructive'
      });
      throw err;
    } finally {
      setLoading(false);
    }
  }, []);

  // Change password
  const changePassword = useCallback(async (passwordData: {
    current_password: string;
    new_password: string;
  }) => {
    setLoading(true);
    setError(null);
    try {
      await api.post('/auth/change-password', passwordData);
      showToast({
        title: 'Password changed',
        description: 'Your password has been successfully updated'
      });
      return true;
    } catch (err: any) {
      const message = err.response?.data?.detail || 'Failed to change password';
      setError(message);
      showToast({
        title: 'Password change failed',
        description: message,
        variant: 'destructive'
      });
      throw err;
    } finally {
      setLoading(false);
    }
  }, []);

  // Load profile on mount
  useEffect(() => {
    getProfile();
  }, [getProfile]);

  return {
    user,
    loading,
    error,
    getProfile,
    updateProfile,
    changePassword
  };
}