import { mdiChartTimelineVariant, mdiUpload } 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 FormImagePicker from '../../components/FormImagePicker';
import { SelectField } from '../../components/SelectField';
import { SelectFieldMany } from '../../components/SelectFieldMany';
import { SwitchField } from '../../components/SwitchField';

import { update, fetch } from '../../stores/users/usersSlice';
import { useAppDispatch, useAppSelector } from '../../stores/hooks';
import { useRouter } from 'next/router';
import type { User } from '../../types/entities';

const initVals = {
  firstName: '',
  lastName: '',
  phoneNumber: '',
  email: '',
  disabled: false,
  avatar: [] as string[],
  app_role: null as unknown,
  custom_permissions: [] as unknown[],
  password: '',
};

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

  const usersState = useAppSelector((state) => state.users);
  const users = usersState.users as User | User[] | undefined;
  const user = Array.isArray(users) ? users[0] : users;

  const { usersId } = router.query as { usersId?: string };

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

  // Sync form values with fetched data
  useEffect(() => {
    if (typeof user === 'object' && user !== null) {
      const newInitialVal = { ...initVals };
      Object.keys(initVals).forEach((key) => {
        if (key in user) {
          (newInitialVal as Record<string, unknown>)[key] = (
            user as unknown as Record<string, unknown>
          )[key];
        }
      });
      setInitialValues(newInitialVal);
    }
  }, [user]);

  const handleSubmit = async (data: typeof initVals) => {
    if (usersId) {
      await dispatch(
        update({ id: usersId, data: data as unknown as Partial<User> }),
      );
    }
    await router.push('/users/users-list');
  };

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

              <FormField label='Last Name'>
                <Field name='lastName' placeholder='Last Name' />
              </FormField>

              <FormField label='Phone Number'>
                <Field name='phoneNumber' placeholder='Phone Number' />
              </FormField>

              <FormField label='E-Mail'>
                <Field name='email' placeholder='E-Mail' />
              </FormField>

              <FormField label='Disabled' labelFor='disabled'>
                <Field
                  name='disabled'
                  id='disabled'
                  component={SwitchField}
                ></Field>
              </FormField>

              <FormField>
                <Field
                  label='Avatar'
                  color='info'
                  icon={mdiUpload}
                  path={'users/avatar'}
                  name='avatar'
                  id='avatar'
                  schema={{
                    size: undefined,
                    formats: undefined,
                  }}
                  component={FormImagePicker}
                ></Field>
              </FormField>

              <FormField label='App Role' labelFor='app_role'>
                <Field
                  name='app_role'
                  id='app_role'
                  component={SelectField}
                  options={initialValues.app_role}
                  itemRef={'roles'}
                  showField={'name'}
                ></Field>
              </FormField>

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

              <FormField label='Password'>
                <Field name='password' placeholder='password' />
              </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('/users/users-list')}
                />
              </BaseButtons>
            </Form>
          </Formik>
        </CardBox>
      </SectionMain>
    </>
  );
};

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

export default EditUsers;
