# All files / src/components main-search.tsx

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     import {
      type CSSProperties,
      Fragment,
      type InputHTMLAttributes,
      type SyntheticEvent,
      useMemo,
    } from 'react';

    import { Dropdown } from './dropdown-button';
    import Button from './button';

    import type { FranklinStyle } from '../types/common';

    import '../styles/components/main-search.scss';

    interface InputInternalStyle extends CSSProperties {
      '--input-padding': string;
    }

    export type MainSearchProps = {
      /**
       * Action performed upon search submission
       */
      onSubmit: (e: SyntheticEvent) => void;
      /**
       * What happens when text is typed in the search box
       */
      onTextChange: (selectedValue: string) => void;
      /**
       * The search term
       */
      searchTerm?: string;
      /**
       * An object representing the different namespace options
       */
      namespaces?: Record<string, string>;
      /**
       * What happens when a namespace is changed in the dropdown
       */
      onNamespaceChange?: (namespace: string) => void;
      /**
       * The selected namespace in the dropdown
       */
      selectedNamespace?: string;
      /**
       * A list of objects representing secondary buttons and their actions
       */
      secondaryButtons?: { label: string; action: () => void }[];
    } & InputHTMLAttributes<HTMLInputElement>;

    const countCharacters = (items: string[]) =>
      items.reduce((prev, curr) => prev + curr.length, 0);

    const MainSearch = ({
      searchTerm,
      namespaces = {},
      onTextChange,
      onSubmit,
      onNamespaceChange,
      selectedNamespace,
      secondaryButtons,
      ...props
    }: MainSearchProps) => {
      const style = useMemo<FranklinStyle>(
        () => ({
          '--main-button-color': `var(--fr--color-${selectedNamespace}, var(--fr--color-sea-blue))`,
        }),
        [selectedNamespace]
      );

      const inputStyle = useMemo<InputInternalStyle | undefined>(() => {
        const count =
          secondaryButtons &&
          countCharacters(secondaryButtons.map(({ label }) => label));
        return count ? { '--input-padding': `${count}ch` } : undefined;
      }, [secondaryButtons]);

      const visibleElement = (onClick: () => unknown) => (
        <Button variant="primary" style={style} onClick={onClick}>
          {
            namespaces[
              // Pick the first item if nothing defined
              selectedNamespace || Object.keys(namespaces)[0]
            ]
          }
        </Button>
      );

      return (
        <form onSubmit={onSubmit} aria-label="Main search" className="main-search">
          {Object.keys(namespaces).length > 0 && onNamespaceChange && (
            <Dropdown
              visibleElement={visibleElement}
              propChangeToClose={selectedNamespace}
            >
              <ul className="no-bullet">
                {Object.keys(namespaces).map((key) => (
                  <li key={key}>
                    <Button
                      variant="tertiary"
                      onClick={() => {
                        onNamespaceChange(key);
                      }}
                    >
                      {namespaces[key]}
                    </Button>
                  </li>
                ))}
              </ul>
            </Dropdown>
          )}
          <div className="main-search__input-container">
            <input
              type="search"
              aria-label={`Text query${
                selectedNamespace ? ` in ${selectedNamespace}` : ''
              }`}
              onChange={(e) => onTextChange(e.target.value)}
              value={searchTerm}
              style={inputStyle}
              {...props}
            />
            {secondaryButtons && (
              <div className="main-search__secondary-container">
                {secondaryButtons.map(({ label, action }, index) => (
                  // eslint-disable-next-line react/no-array-index-key
                  <Fragment key={index}>
                    {index > 0 && <small> | </small>}
                    <button
                      type="button"
                      onClick={action}
                      key={label}
                      className="main-search--secondary"
                    >
                      <small>{label}</small>
                    </button>
                  </Fragment>
                ))}
              </div>
            )}
          </div>
          <Button type="submit">Search</Button>
        </form>
      );
    };

    export default MainSearch;