/*
 * Copyright 2025 Commonwealth Scientific and Industrial Research
 * Organisation (CSIRO) ABN 41 687 119 230.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import React from 'react';
import Autocomplete from '@mui/material/Autocomplete';
import CircularProgress from '@mui/material/CircularProgress';
import Fade from '@mui/material/Fade';
import Tooltip from '@mui/material/Tooltip';
import type { Coding, QuestionnaireItem } from 'fhir/r4';
import { StandardTextField } from '../Textfield.styles';
import SearchIcon from '@mui/icons-material/Search';
import InfoIcon from '@mui/icons-material/Info';
// @ts-ignore: Module has no declaration file. Not sure why WarningAmber.d.ts is not present in MUI icons 7.0.2
import WarningAmberIcon from '@mui/icons-material/WarningAmber';
import DoneIcon from '@mui/icons-material/Done';
import ErrorIcon from '@mui/icons-material/Error';
import type {
  PropsWithIsTabledAttribute,
  PropsWithParentIsReadOnlyAttribute,
  PropsWithRenderingExtensionsAttribute
} from '../../../interfaces/renderProps.interface';
import type { AlertColor } from '@mui/material/Alert';
import { useRendererConfigStore } from '../../../stores';
import { interpolate } from '../../../i18n';
import DisplayUnitText from '../ItemParts/DisplayUnitText';
import ExpressionUpdateFadingIcon from '../ItemParts/ExpressionUpdateFadingIcon';

interface ChoiceAutocompleteFieldsProps
  extends PropsWithIsTabledAttribute,
    PropsWithParentIsReadOnlyAttribute,
    PropsWithRenderingExtensionsAttribute {
  qItem: QuestionnaireItem;
  options: Coding[];
  valueCoding: Coding | null;
  /** Debounced search term sent to the terminology server. Fewer than 2 characters means no query has run. */
  searchTerm: string;
  loading: boolean;
  feedback: { message: string; color: AlertColor } | null;
  readOnly: boolean;
  calcExpUpdated: boolean;
  instructionsId?: string;

  onInputChange: (newInput: string) => void;
  onValueChange: (newValue: Coding | null) => void;
}

function ChoiceAutocompleteField(props: ChoiceAutocompleteFieldsProps) {
  const {
    qItem,
    options,
    valueCoding,
    searchTerm,
    loading,
    feedback,
    readOnly,
    calcExpUpdated,
    instructionsId,
    isTabled,
    renderingExtensions,
    onInputChange,
    onValueChange
  } = props;

  const readOnlyVisualStyle = useRendererConfigStore.use.readOnlyVisualStyle();
  const textFieldWidth = useRendererConfigStore.use.textFieldWidth();
  const rendererStrings = useRendererConfigStore.use.rendererStrings();

  const { displayUnit, displayPrompt, entryFormat } = renderingExtensions;

  return (
    <Autocomplete
      id={qItem.type + '-' + qItem.linkId}
      value={valueCoding ?? null}
      options={options}
      getOptionLabel={(option) => option.display ?? `${option.code}`}
      isOptionEqualToValue={(option, value) => option.code === value.code}
      disabled={readOnly && readOnlyVisualStyle === 'disabled'}
      readOnly={readOnly && readOnlyVisualStyle === 'readonly'}
      loading={loading}
      loadingText={rendererStrings.fetchingResults}
      noOptionsText={
        searchTerm.length < 2
          ? rendererStrings.autocompleteTypeToSearch
          : rendererStrings.terminologyNoResults
      }
      clearOnEscape
      autoHighlight
      onChange={(_, newValue) => onValueChange(newValue)}
      sx={{ maxWidth: !isTabled ? textFieldWidth : 3000, minWidth: 160, flexGrow: 1 }}
      filterOptions={(x) => x}
      renderInput={(params) => (
        <StandardTextField
          {...params}
          multiline
          onChange={(e) => onInputChange(e.target.value)}
          textFieldWidth={textFieldWidth}
          isTabled={isTabled}
          size="small"
          placeholder={valueCoding ? undefined : entryFormat || displayPrompt}
          slotProps={{
            input: {
              ...params.InputProps,
              readOnly: readOnly && readOnlyVisualStyle === 'readonly',
              startAdornment: (
                <>
                  {!valueCoding ? <SearchIcon fontSize="small" sx={{ ml: 0.5 }} /> : null}
                  {params.InputProps.startAdornment}
                </>
              ),
              endAdornment: (
                <>
                  {loading ? (
                    <CircularProgress color="inherit" size={16} />
                  ) : feedback ? (
                    <Fade in={!!feedback} timeout={300}>
                      <Tooltip title={feedback.message} arrow sx={{ ml: 1 }}>
                        {
                          {
                            info: <InfoIcon fontSize="small" color="info" />,
                            warning: <WarningAmberIcon fontSize="small" color="warning" />,
                            success: <DoneIcon fontSize="small" color="success" />,
                            error: <ErrorIcon fontSize="small" color="error" />
                          }[feedback.color]
                        }
                      </Tooltip>
                    </Fade>
                  ) : null}
                  <ExpressionUpdateFadingIcon fadeIn={calcExpUpdated} disabled={readOnly} />
                  {params.InputProps.endAdornment}
                  <DisplayUnitText readOnly={readOnly}>{displayUnit}</DisplayUnitText>
                </>
              )
            },
            htmlInput: {
              ...params.inputProps,
              ...(isTabled
                ? {
                    'aria-label':
                      qItem.text ?? interpolate(rendererStrings.unnamedItem, { type: qItem.type })
                  }
                : { 'aria-labelledby': `label-${qItem.linkId}` }),
              ...(instructionsId && { 'aria-describedby': instructionsId })
            }
          }}
        />
      )}
    />
  );
}

export default ChoiceAutocompleteField;