/**
 * 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.
 */

import type { ComboboxOption } from './types.js';

export class ComboboxSelectionManager {
  static createOptionsFromValues(
    value: string | string[],
    data: any[],
    getDisplayText: (item: any) => string,
    getItemValue?: (item: any) => string
  ): ComboboxOption[] {
    if (!value || (Array.isArray(value) && value.length === 0)) {
      return [];
    }

    const values = Array.isArray(value) ? value : [value];
    const valueFn = getItemValue || ((item: any) => item?.value ?? item);

    return values.map(valueItem => {
      const item = data.find((d: any) => {
        const iv = valueFn(d);
        return String(iv) === String(valueItem);
      });

      const displayText = item ? getDisplayText(item) : valueItem;

      return {
        value: valueItem,
        selected: true,
        getTextLabel: () => {
          if (typeof displayText === 'string' && /<[^>]+>/.test(displayText)) {
            const div = document.createElement('div');
            div.innerHTML = displayText;
            return div.textContent || div.innerText || '';
          }
          return displayText;
        },
      };
    });
  }

  static toggleMultiValue(currentValues: string[], optionValue: string): string[] {
    if (currentValues.includes(optionValue)) {
      return currentValues.filter(v => v !== optionValue);
    }
    return [...currentValues, optionValue];
  }

  static removeValue(currentValues: string[], removeValue: string): string[] {
    return currentValues.filter(v => v !== removeValue);
  }
}