import { useEffect, useState } from 'react';
import { DateInput, FieldValueList, DateTimeDisplay, Text, withConfiguration } from '@pega/cosmos-react-core';
import FormattedText from './FormattedText';

import type { PConnFieldProps } from './PConnProps';
import './create-nonce';

import Styled{{COMPONENT_CLASS_NAME}}Wrapper from './styles';

// includes in bundle
import { datetimedisplayformatter, formatExists, getFullYear, getMaxDate, getMinDate, datetimeFireChangeBlurEvents, getDateFormat } from './date';
import { suggestionsHandler } from './suggestions-handler';
import type { DateTimeFormat, DateTimeVariant } from '@pega/cosmos-react-core/lib/components/DateTime/DateTime.types.js';

// interface for props
interface {{COMPONENT_CLASS_NAME}}Props extends PConnFieldProps {
  // If any, enter additional props that only exist on TextInput here
  displayAsStatus?: boolean;
  isTableFormatter?: boolean;
  hasSuggestions?: boolean;
  variant?: any;
  formatter?: string;
  withSeconds: boolean;
  nextYearRange: string;
  previousYearRange: string;
  showWeekNumber: boolean;
  showAsFormattedText: boolean;
}

// interface for StateProps object
interface StateProps {
  value: string;
  hasSuggestions: boolean;
}

interface ConfigProps {
  formatter?: string | undefined;
}

interface ActionsProps {
  onFocus: any;
}

// Duplicated runtime code from Constellation Design System Component

// props passed in combination of props from property panel (config.json) and run time props from Constellation
// any default values in config.pros should be set in defaultProps at bottom of this file
function {{COMPONENT_CLASS_NAME}}(props: {{COMPONENT_CLASS_NAME}}Props) {
  const {
    getPConnect,
    value,
    validatemessage,
    label,
    hideLabel = false,
    helperText = '',
    nextYearRange,
    previousYearRange,
    showWeekNumber = false,
    testId,
    showAsFormattedText = false,
    additionalProps = {},
    displayMode,
    variant = 'inline',
    hasSuggestions = false
  } = props;

  let { formatter = 'defaultDate' } = props;
  const pConn = getPConnect();
  const actions = pConn.getActionsApi();
  const actionsProps = pConn.getActionsApi() as unknown as ActionsProps;
  const stateProps = pConn.getStateProps() as StateProps;
  const propName: string = stateProps.value;

  let { readOnly = false, required = false, disabled = false } = props;
  [readOnly, required, disabled] = [readOnly, required, disabled].map(prop => prop === true || (typeof prop === 'string' && prop === 'true'));

  const [status, setStatus] = useState(hasSuggestions ? 'pending' : '');

  // cast status
  let myStatus: 'success' | 'warning' | 'error' | 'pending';
  // eslint-disable-next-line prefer-const
  myStatus = status as 'success' | 'warning' | 'error' | 'pending';

  useEffect(() => {
    if (validatemessage !== '') {
      setStatus('error');
    }
    if (hasSuggestions) {
      setStatus('pending');
    } else if (!hasSuggestions && myStatus !== 'success') {
      // @ts-ignore
      setStatus(validatemessage !== '' ? 'error' : undefined);
    }
  }, [validatemessage, hasSuggestions, myStatus]);

  // calculate min and max range of calendar
  const currentYear = getFullYear(null);

  const yearFromValue = getFullYear(value);
  const maxDate = getMaxDate(parseInt(nextYearRange, 10), currentYear, yearFromValue);
  const minDate = getMinDate(parseInt(previousYearRange, 10), currentYear, yearFromValue);

  const onResolveSuggestionHandler = (accepted: boolean) => {
    suggestionsHandler(accepted, pConn, setStatus);
  };

  function handleBlur(onBlurValue: any) {
    const { valueAsISOString: date, state: errorState } = onBlurValue;
    const trimmedDate = date ? date.substring(0, date.indexOf('T')) : date;
    datetimeFireChangeBlurEvents(errorState, value, trimmedDate, actions, propName, pConn);
    const isValueChanged = !(value === undefined && trimmedDate === '') && value !== trimmedDate;
    if (hasSuggestions && isValueChanged) {
      pConn.ignoreSuggestion('');
    }
  }

  function handleChange(onChangeValue: any) {
    const { valueAsISOString: date } = onChangeValue;
    const trimmedDate = date ? date.substring(0, date.indexOf('T')) : date;
    if (hasSuggestions && value !== trimmedDate) {
      setStatus('');
    }
    pConn.clearErrorMessages({
      category: '',
      property: propName,
      context: ''
    });
  }

  if (displayMode === 'LABELS_LEFT' || displayMode === 'STACKED_LARGE_VAL' || displayMode === 'DISPLAY_ONLY') {
    let variantValue = 'date';
    let formatValue = 'long';
    if (pConn && pConn.getConfigProps()) {
      const configProps = pConn.getConfigProps() as ConfigProps;
      const runtimeformatter = configProps?.formatter;

      if (formatter !== runtimeformatter) {
        formatter = runtimeformatter!;
      }
    }

    if (formatter !== '' && formatExists(formatter)) {
      // @ts-ignore
      const { variantVal, formatVal } = datetimedisplayformatter(formatter);
      variantValue = variantVal;
      formatValue = formatVal;
    }
    const displayComp = <DateTimeDisplay variant={variantValue as DateTimeVariant} format={formatValue as DateTimeFormat} value={value} />;
    switch (displayMode) {
      case 'DISPLAY_ONLY': {
		    return <Styled{{COMPONENT_CLASS_NAME}}Wrapper> {displayComp} </Styled{{COMPONENT_CLASS_NAME}}Wrapper>;
      }
      case 'LABELS_LEFT': {
        return (
          <Styled{{COMPONENT_CLASS_NAME}}Wrapper>
            <FieldValueList
              variant={hideLabel ? 'stacked' : variant}
              data-testid={testId}
              fields={[{ id: '1', name: hideLabel ? '' : label, value: displayComp }]}
            />
          </Styled{{COMPONENT_CLASS_NAME}}Wrapper>
        );
      }
      case 'STACKED_LARGE_VAL': {
        return (
          <Styled{{COMPONENT_CLASS_NAME}}Wrapper>
            <FieldValueList
              variant='stacked'
              data-testid={testId}
              fields={[
                {
                  id: '2',
                  name: hideLabel ? '' : label,
                  value: (
                    <Text variant='h1' as='span'>
                      {displayComp}
                    </Text>
                  )
                }
              ]}
            />
          </Styled{{COMPONENT_CLASS_NAME}}Wrapper>
        );
      }
      // no default
    }
  }

  let dateComponent;

  if (readOnly && showAsFormattedText) {
    const environmentInfo = PCore.getEnvironmentInfo();
    const locale = environmentInfo && environmentInfo.getLocale();
    const textAdditionalProps = {
      format: getDateFormat(locale as string, {}),
      fieldType: 'Date'
    };
    dateComponent = (
      <Styled{{COMPONENT_CLASS_NAME}}Wrapper>
        <FormattedText
          formatType='date'
          value={value}
          label={label}
          hideLabel={hideLabel}
          testId={testId}
          additionalProps={textAdditionalProps}
          customFormat={getDateFormat(locale, null)}
        />
      </Styled{{COMPONENT_CLASS_NAME}}Wrapper>
    );
  } else {
    dateComponent = (
      <Styled{{COMPONENT_CLASS_NAME}}Wrapper>
        <DateInput
          {...additionalProps}
          label={label}
          labelHidden={hideLabel}
          info={validatemessage || helperText}
          status={status}
          value={value || undefined}
          disabled={disabled}
          readOnly={readOnly}
          required={required}
          showWeekNumber={showWeekNumber}
          min={minDate}
          max={maxDate}
          data-testid={testId}
          onFocus={actionsProps.onFocus}
          onChange={handleChange}
          onBlur={handleBlur}
          onResolveSuggestion={onResolveSuggestionHandler}
        />
      </Styled{{COMPONENT_CLASS_NAME}}Wrapper>
    );
  }
  return dateComponent;
}

export default withConfiguration({{COMPONENT_CLASS_NAME}});