/**
 * Edit Roles Page
 * Cleaned up version with consolidated useEffect hooks
 */

import { mdiChartTimelineVariant } from '@mdi/js';
import Head from 'next/head';
import React, { ReactElement, useEffect, useState } from 'react';

import CardBox from '../../components/CardBox';
import LayoutAuthenticated from '../../layouts/Authenticated';
import SectionMain from '../../components/SectionMain';
import SectionTitleLineWithButton from '../../components/SectionTitleLineWithButton';
import { getPageTitle } from '../../config';

import { Field, Form, Formik } from 'formik';
import FormField from '../../components/FormField';
import BaseDivider from '../../components/BaseDivider';
import BaseButtons from '../../components/BaseButtons';
import BaseButton from '../../components/BaseButton';
import { SelectFieldMany } from '../../components/SelectFieldMany';

import { update, fetch } from '../../stores/roles/rolesSlice';
import { useAppDispatch, useAppSelector } from '../../stores/hooks';
import { useRouter } from 'next/router';

const initVals = {
  name: '',
  permissions: [],
};

const EditRolesPage = () => {
  const router = useRouter();
  const dispatch = useAppDispatch();
  const [initialValues, setInitialValues] = useState(initVals);

  const { roles } = useAppSelector((state) => state.roles);
  const { id } = router.query;

  // Fetch entity data
  useEffect(() => {
    if (id) {
      dispatch(fetch({ id: id as string }));
    }
  }, [id, dispatch]);

  // Sync form values with fetched data (consolidated from redundant useEffects)
  useEffect(() => {
    if (typeof roles === 'object' && roles !== null) {
      const newInitialVal = { ...initVals };
      Object.keys(initVals).forEach((key) => {
        if (key in roles) {
          newInitialVal[key] = roles[key];
        }
      });
      setInitialValues(newInitialVal);
    }
  }, [roles]);

  const handleSubmit = async (data: typeof initVals) => {
    await dispatch(update({ id: id as string, data }));
    await router.push('/roles/roles-list');
  };

  return (
    <>
      <Head>
        <title>{getPageTitle('Edit roles')}</title>
      </Head>
      <SectionMain>
        <SectionTitleLineWithButton
          icon={mdiChartTimelineVariant}
          title='Edit roles'
          main
        >
          {''}
        </SectionTitleLineWithButton>
        <CardBox>
          <Formik
            enableReinitialize
            initialValues={initialValues}
            onSubmit={(values) => handleSubmit(values)}
          >
            <Form>
              <FormField label='Name'>
                <Field name='name' placeholder='Name' />
              </FormField>

              <FormField label='Permissions' labelFor='permissions'>
                <Field
                  name='permissions'
                  id='permissions'
                  component={SelectFieldMany}
                  options={initialValues.permissions}
                  itemRef='permissions'
                  showField='name'
                />
              </FormField>

              <BaseDivider />
              <BaseButtons>
                <BaseButton type='submit' color='info' label='Submit' />
                <BaseButton type='reset' color='info' outline label='Reset' />
                <BaseButton
                  type='reset'
                  color='danger'
                  outline
                  label='Cancel'
                  onClick={() => router.push('/roles/roles-list')}
                />
              </BaseButtons>
            </Form>
          </Formik>
        </CardBox>
      </SectionMain>
    </>
  );
};

EditRolesPage.getLayout = function getLayout(page: ReactElement) {
  return (
    <LayoutAuthenticated permission='UPDATE_ROLES'>{page}</LayoutAuthenticated>
  );
};

export default EditRolesPage;
