import { ReactElement, ReactNode, useMemo, useState } from 'react';

import { BLACK } from '../../lib/consts/DEFAULT_THEME';

import CommonUpsInputGroup, {
  INPUT_ID_UPS_IP,
  INPUT_ID_UPS_NAME,
} from './CommonUpsInputGroup';
import FlexBox from '../FlexBox';
import Link from '../Link';
import SelectWithLabel from '../SelectWithLabel';
import Spinner from '../Spinner';
import { BodyText } from '../Text';
import useIsFirstRender from '../../hooks/useIsFirstRender';

const INPUT_ID_UPS_TYPE = 'add-ups-select-ups-type-id';

const INPUT_LABEL_UPS_TYPE = 'UPS type';

const AddUpsInputGroup = <
  M extends {
    [K in
      | typeof INPUT_ID_UPS_IP
      | typeof INPUT_ID_UPS_NAME
      | typeof INPUT_ID_UPS_TYPE]: string;
  },
>({
  formUtils,
  loading: isExternalLoading,
  previous = {},
  upsTemplate,
}: AddUpsInputGroupProps<M>): ReactElement => {
  const { buildInputFirstRenderFunction, setValidity } = formUtils;

  const { upsTypeId: previousUpsTypeId = '' } = previous;

  const isFirstRender = useIsFirstRender();

  const [inputUpsTypeIdValue, setInputUpsTypeIdValue] =
    useState<string>(previousUpsTypeId);

  const upsTypeOptions = useMemo<SelectItem[]>(
    () =>
      upsTemplate
        ? Object.entries(upsTemplate).map<SelectItem>(
            ([
              upsTypeId,
              {
                brand,
                description,
                links: { 0: link },
              },
            ]) => {
              let linkElement: ReactNode;

              if (link) {
                const { linkHref, linkLabel } = link;

                linkElement = (
                  <Link
                    href={linkHref}
                    onClick={(event) => {
                      // Don't trigger the (parent) item selection event.
                      event.stopPropagation();
                    }}
                    sx={{ display: 'inline-flex', color: BLACK }}
                    target="_blank"
                  >
                    {linkLabel}
                  </Link>
                );
              }

              return {
                displayValue: (
                  <FlexBox spacing={0}>
                    <BodyText inverted>{brand}</BodyText>
                    <BodyText inverted>
                      {description} ({linkElement})
                    </BodyText>
                  </FlexBox>
                ),
                value: upsTypeId,
              };
            },
          )
        : [],
    [upsTemplate],
  );

  const pickUpsTypeElement = useMemo(
    () =>
      upsTemplate && (
        <SelectWithLabel
          formControlProps={{ sx: { marginTop: '.3em' } }}
          id={INPUT_ID_UPS_TYPE}
          label={INPUT_LABEL_UPS_TYPE}
          onChange={({ target: { value: rawNewValue } }) => {
            const newValue = String(rawNewValue);

            setValidity(INPUT_ID_UPS_TYPE, true);
            setInputUpsTypeIdValue(newValue);
          }}
          required
          selectItems={upsTypeOptions}
          selectProps={{
            onClearIndicatorClick: () => {
              setValidity(INPUT_ID_UPS_TYPE, false);
              setInputUpsTypeIdValue('');
            },
            renderValue: (rawValue) => {
              const upsTypeId = String(rawValue);
              const { brand } = upsTemplate[upsTypeId];

              return brand;
            },
          }}
          value={inputUpsTypeIdValue}
        />
      ),
    [upsTemplate, upsTypeOptions, inputUpsTypeIdValue, setValidity],
  );

  const content = useMemo<ReactElement>(
    () =>
      isExternalLoading ? (
        <Spinner />
      ) : (
        <FlexBox>
          {pickUpsTypeElement}
          {inputUpsTypeIdValue && (
            <CommonUpsInputGroup formUtils={formUtils} previous={previous} />
          )}
        </FlexBox>
      ),
    [
      formUtils,
      inputUpsTypeIdValue,
      isExternalLoading,
      pickUpsTypeElement,
      previous,
    ],
  );

  if (isFirstRender) {
    buildInputFirstRenderFunction(INPUT_ID_UPS_TYPE)({
      isValid: Boolean(inputUpsTypeIdValue),
    });
  }

  return content;
};

export { INPUT_ID_UPS_TYPE, INPUT_LABEL_UPS_TYPE };

export default AddUpsInputGroup;