import { useEffect, useState } from 'react';
import { useNavigate, useParams } from 'react-router';
import { useCreateUser, useUpdateUser, useUser, UserFormData } from '../../features/users/api/users';
import { extractApiErrors } from '../../lib/api-client';
import axios from 'axios';

const UserFormPage = () => {
  const { id } = useParams();
  const navigate = useNavigate();
  const isEditing = !!id;
  
  // Query dan mutations
  const { data: user, isLoading: isLoadingUser } = useUser(id || '');
  const createUser = useCreateUser();
  const updateUser = useUpdateUser();
  
  // Form state
  const [formData, setFormData] = useState<UserFormData>({
    name: '',
    email: '',
    password: '',
    role: 'user', // Default role
  });
  
  const [errors, setErrors] = useState<Record<string, string>>({});
  
  // Isi form dengan data user jika mode edit
  useEffect(() => {
    if (isEditing && user) {
      setFormData({
        name: user.name,
        email: user.email,
        role: user.role,
        // Password kosong saat edit
      });
    }
  }, [isEditing, user]);
  
  const handleChange = (
    e: React.ChangeEvent<HTMLInputElement | HTMLSelectElement>
  ) => {
    const { name, value } = e.target;
    setFormData((prev) => ({
      ...prev,
      [name]: value,
    }));
    
    // Hapus error untuk field yang sedang diubah
    if (errors[name]) {
      setErrors((prev) => {
        const newErrors = { ...prev };
        delete newErrors[name];
        return newErrors;
      });
    }
  };
  
  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    
    try {
      if (isEditing && id) {
        // Jika password kosong, hapus dari data yang dikirim
        const dataToSubmit = { ...formData };
        if (!dataToSubmit.password) {
          delete dataToSubmit.password;
        }
        
        await updateUser.mutateAsync({ id, data: dataToSubmit });
      } else {
        await createUser.mutateAsync(formData);
      }
      
      navigate('/users');
    } catch (error) {
      if (axios.isAxiosError(error) && error.response?.status === 400) {
        const apiErrors = error.response.data.status.errors;
        setErrors(apiErrors || {});
      } else {
        const extractedErrors = extractApiErrors(error);
        setErrors(extractedErrors);
      }
    }
  };
  
  if (isEditing && isLoadingUser) {
    return (
      <div className="flex justify-center items-center h-64">
        <span className="loading loading-spinner loading-lg"></span>
      </div>
    );
  }
  
  return (
    <div className="container mx-auto p-4">
      <div className="card bg-base-100 shadow-xl">
        <div className="card-body">
          <h2 className="card-title text-2xl mb-6">
            {isEditing ? 'Edit Pengguna' : 'Tambah Pengguna'}
          </h2>
          
          <form onSubmit={handleSubmit}>
            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
              <div className="form-control">
                <label className="label">
                  <span className="label-text">Nama</span>
                </label>
                <input
                  type="text"
                  name="name"
                  value={formData.name}
                  onChange={handleChange}
                  className={`input input-bordered ${errors.name ? 'input-error' : ''}`}
                />
                {errors.name && (
                  <label className="label">
                    <span className="label-text-alt text-error">{errors.name}</span>
                  </label>
                )}
              </div>
              
              <div className="form-control">
                <label className="label">
                  <span className="label-text">Email</span>
                </label>
                <input
                  type="email"
                  name="email"
                  value={formData.email}
                  onChange={handleChange}
                  className={`input input-bordered ${errors.email ? 'input-error' : ''}`}
                />
                {errors.email && (
                  <label className="label">
                    <span className="label-text-alt text-error">{errors.email}</span>
                  </label>
                )}
              </div>
              
              <div className="form-control">
                <label className="label">
                  <span className="label-text">Password {isEditing && '(kosongkan jika tidak ingin mengubah)'}</span>
                </label>
                <input
                  type="password"
                  name="password"
                  value={formData.password || ''}
                  onChange={handleChange}
                  className={`input input-bordered ${errors.password ? 'input-error' : ''}`}
                />
                {errors.password && (
                  <label className="label">
                    <span className="label-text-alt text-error">{errors.password}</span>
                  </label>
                )}
              </div>
              
              <div className="form-control">
                <label className="label">
                  <span className="label-text">Role</span>
                </label>
                <select
                  name="role"
                  value={formData.role}
                  onChange={handleChange}
                  className={`select select-bordered ${errors.role ? 'select-error' : ''}`}
                >
                  <option value="user">User</option>
                  <option value="admin">Admin</option>
                </select>
                {errors.role && (
                  <label className="label">
                    <span className="label-text-alt text-error">{errors.role}</span>
                  </label>
                )}
              </div>
            </div>
            
            <div className="card-actions justify-end mt-6">
              <button
                type="button"
                className="btn btn-outline"
                onClick={() => navigate('/users')}
              >
                Batal
              </button>
              <button
                type="submit"
                className="btn btn-primary"
                disabled={createUser.isPending || updateUser.isPending}
              >
                {(createUser.isPending || updateUser.isPending) ? (
                  <span className="loading loading-spinner loading-sm"></span>
                ) : (
                  isEditing ? 'Update' : 'Simpan'
                )}
              </button>
            </div>
          </form>
        </div>
      </div>
    </div>
  );
};

export default UserFormPage;