/**
 * Copyright Aquera Inc 2025
 *
 * This source code is licensed under the BSD-3-Clause license found in the
 * LICENSE file in the root directory of this source tree.
 */

export class VirtualSelectSearchManager {
    static filterVirtualOptions(
    searchValue: string,
    originalOptionItems: any[],
    data: any[], 
    renderItemFunction: (item: any) => string,
    getItemDescription: (item: any) => string,
    descriptionSearchEnabled: boolean,
    getSearchText?: (item: any) => string
  ): { filteredItems: any[], showNoResults: boolean } {
    if (originalOptionItems.length === 0 && data.length > 0) {
      return {
        filteredItems: [...data],
        showNoResults: false
      };
    }

    if (!originalOptionItems || originalOptionItems.length === 0) {
      return {
        filteredItems: [],
        showNoResults: true
      };
    }

    if (!searchValue || searchValue.trim() === '') {
      return {
        filteredItems: [...originalOptionItems],
        showNoResults: false
      };
    }

    const lowerCaseSearchValue = searchValue.toLowerCase();
    const searchTextFn = getSearchText || renderItemFunction;
    const filteredItems = originalOptionItems.filter((item: any) => {
      const itemValue = searchTextFn(item);
      const lowerCaseItemValue = itemValue.toLowerCase();
      const itemDescription = getItemDescription(item);
      if (descriptionSearchEnabled && itemDescription) {
        return lowerCaseItemValue.includes(lowerCaseSearchValue) || itemDescription.includes(lowerCaseSearchValue);
      }
      return lowerCaseItemValue.includes(lowerCaseSearchValue);
    });

    return {
      filteredItems,
      showNoResults: filteredItems.length === 0
    };
  }
}