import { $, h, when, fx } from 'sigpro';
import { Input } from '../Input.js';
import { filterBy, listKey, getBy } from '../All.js';


export const Autocomplete = ({ items, value, onselect, placeholder = 'Buscar...', ...props }) => {
  const query = $(value ? (typeof value === 'function' ? value() : value) : '');
  const isOpen = $(false);
  const filtered = $(() => filterBy(items, query()));
  const { cursor, onKey } = listKey(filtered, isOpen);

  const pick = (item) => {
    const display = getBy(item);
    const actual = typeof item === 'string' ? item : item.value;
    query(display);
    if (typeof value === 'function') value(actual);
    onselect?.(item);
    isOpen(false);
  };

  return h('div', { class: 'relative w-full' }, [
    Input({
      ...props,
      type: 'text',
      placeholder,
      value: query,
      left: h('span', { class: 'icon-[lucide--search]' }),
      oninput: (e) => {
        query(e.target.value);
        if (typeof value === 'function') value(e.target.value);
        isOpen(true);
      },
      onfocus: () => isOpen(true),
      onblur: () => setTimeout(() => isOpen(false), 150),
      onkeydown: (e) => onKey(e, pick)
    }),

    when(isOpen, () =>
      fx({ duration: 200, slide: true },
        h('ul', {
          class: 'absolute left-0 w-full menu bg-base-100 rounded-box mt-1 p-2 shadow-xl max-h-60 overflow-y-auto border border-base-300 z-50 flex-col flex-nowrap'
        }, [
          each(filtered, (item, idx) =>
            h('li', {}, [
              h('a', {
                class: () => cursor() === idx ? 'active bg-primary text-primary-content' : '',
                onmousedown: (e) => e.preventDefault(), // evita que el blur cierre antes del click
                onclick: () => pick(item),
                onmouseenter: () => cursor(idx)
              }, getBy(item))
            ]),
            (item, idx) => getBy(item) + idx
          ),
          () => filtered().length === 0
            ? h('li', { class: 'p-4 opacity-50 text-center' }, 'Sin resultados')
            : null
        ])
      )
    )
  ]);
};