Stirling-PDF/frontend/src/components/tools/removePages/RemovePagesSettings.tsx

import { Stack, TextInput } from "@mantine/core";
import { useTranslation } from "react-i18next";
import { RemovePagesParameters } from "../../../hooks/tools/removePages/useRemovePagesParameters";
import { validatePageNumbers } from "../../../utils/pageSelection";

interface RemovePagesSettingsProps {
  parameters: RemovePagesParameters;
  onParameterChange: <K extends keyof RemovePagesParameters>(key: K, value: RemovePagesParameters[K]) => void;
  disabled?: boolean;
}

const RemovePagesSettings = ({ parameters, onParameterChange, disabled = false }: RemovePagesSettingsProps) => {
  const { t } = useTranslation();

  const handlePageNumbersChange = (value: string) => {
    // Allow user to type naturally - don't normalize input in real-time
    onParameterChange('pageNumbers', value);
  };

  // Check if current input is valid
  const isValid = validatePageNumbers(parameters.pageNumbers);
  const hasValue = parameters.pageNumbers.trim().length > 0;

  return (
    <Stack gap="md">
      <TextInput
        label={t('removePages.pageNumbers.label', 'Pages to Remove')}
        value={parameters.pageNumbers}
        onChange={(event) => handlePageNumbersChange(event.currentTarget.value)}
        placeholder={t('removePages.pageNumbers.placeholder', 'e.g., 1,3,5-8,10')}
        disabled={disabled}
        required
        error={hasValue && !isValid ? t('removePages.pageNumbers.error', 'Invalid page number format. Use numbers, ranges (1-5), or mathematical expressions (2n+1)') : undefined}
      />
    </Stack>
  );
};

export default RemovePagesSettings;