import { EVENT_CODE } from "../../../constants/aria.mjs";
import { UPDATE_MODEL_EVENT } from "../../../constants/event.mjs";
import { getEventCode } from "../../../utils/dom/event.mjs";
import { useNamespace } from "../../../hooks/use-namespace/index.mjs";
import { ElSelect } from "../../select/index.mjs";
import { useEventListener } from "../../../../node_modules/@vueuse/core/index.mjs";
import { watch, nextTick, onMounted, computed, toRefs } from "vue";
import pick from "../../../../../lodash-es/pick.mjs";
const useSelect = (props, { attrs, emit }, { select, tree, key }) => {
  const ns = useNamespace("tree-select");
  watch(() => props.data, () => {
    if (props.filterable) nextTick(() => {
      var _a, _b;
      (_b = tree.value) == null ? void 0 : _b.filter((_a = select.value) == null ? void 0 : _a.states.inputValue);
    });
  }, { flush: "post" });
  const focusLastNode = (listNode) => {
    var _a, _b;
    const lastNode = listNode.at(-1);
    if (lastNode.expanded && lastNode.childNodes.at(-1)) focusLastNode([lastNode.childNodes.at(-1)]);
    else {
      (_b = (_a = tree.value.el$) == null ? void 0 : _a.querySelector(`[data-key="${listNode.at(-1).key}"]`)) == null ? void 0 : _b.focus({ preventScroll: true });
      return;
    }
  };
  onMounted(() => {
    useEventListener(() => {
      var _a;
      return (_a = select.value) == null ? void 0 : _a.$el;
    }, "keydown", async (evt) => {
      const code = getEventCode(evt);
      const { dropdownMenuVisible } = select.value;
      if ([EVENT_CODE.down, EVENT_CODE.up].includes(code) && dropdownMenuVisible) {
        await nextTick();
        setTimeout(() => {
          var _a, _b, _c;
          if (EVENT_CODE.up === code) {
            const listNode = tree.value.store.root.childNodes;
            focusLastNode(listNode);
            return;
          }
          (_c = (_b = (_a = select.value.optionsArray[select.value.states.hoveringIndex].$el) == null ? void 0 : _a.parentNode) == null ? void 0 : _b.parentNode) == null ? void 0 : _c.focus({ preventScroll: true });
        });
      }
    }, { capture: true });
  });
  return {
    ...pick(toRefs(props), Object.keys(ElSelect.props)),
    ...attrs,
    class: computed(() => attrs.class),
    style: computed(() => attrs.style),
    "onUpdate:modelValue": (value) => emit(UPDATE_MODEL_EVENT, value),
    valueKey: key,
    popperClass: computed(() => {
      const classes = [ns.e("popper")];
      if (props.popperClass) classes.push(props.popperClass);
      return classes.join(" ");
    }),
    filterMethod: (keyword = "") => {
      var _a;
      if (props.filterMethod) props.filterMethod(keyword);
      else if (props.remoteMethod) props.remoteMethod(keyword);
      else (_a = tree.value) == null ? void 0 : _a.filter(keyword);
    }
  };
};
export {
  useSelect
};
