'use client';
import { useEventCallback, useMergedRefs } from '@fluentui/react-utilities';
import * as React from 'react';
import { createHeadlessTree } from '../../utils/createHeadlessTree';
import { treeDataTypes } from '../../utils/tokens';
import { useFlatTreeNavigation } from '../../hooks/useFlatTreeNavigation';
import { createNextOpenItems, useControllableOpenItems } from '../../hooks/useControllableOpenItems';
import { dataTreeItemValueAttrName } from '../../utils/getTreeItemValueFromElement';
import { ImmutableSet } from '../../utils/ImmutableSet';
import { createNextFlatCheckedItems, useFlatControllableCheckedItems } from './useFlatControllableCheckedItems';
import { ImmutableMap } from '../../utils/ImmutableMap';
/**
 * this hook provides FlatTree API to manage all required mechanisms to convert a list of items into renderable TreeItems
 * in multiple scenarios including virtualization.
 *
 * !!A flat tree is an unofficial spec for tree!!
 *
 * It should be used on cases where more complex interactions with a Tree is required.
 * On simple scenarios it is advised to simply use a nested structure instead.
 *
 * @param props - a list of tree items
 * @param options - in case control over the internal openItems is required
 */ export function useHeadlessFlatTree_unstable(props, options = {}) {
    'use no memo';
    const headlessTree = React.useMemo(()=>createHeadlessTree(props), [
        props
    ]);
    const [openItems, setOpenItems] = useControllableOpenItems(options);
    const [checkedItems, setCheckedItems] = useFlatControllableCheckedItems(options, headlessTree);
    const navigation = useFlatTreeNavigation();
    const treeRef = React.useRef(null);
    const handleOpenChange = useEventCallback((event, data)=>{
        var _options_onOpenChange;
        const nextOpenItems = createNextOpenItems(data, openItems);
        (_options_onOpenChange = options.onOpenChange) === null || _options_onOpenChange === void 0 ? void 0 : _options_onOpenChange.call(options, event, {
            ...data,
            openItems: ImmutableSet.dangerouslyGetInternalSet(nextOpenItems)
        });
        setOpenItems(nextOpenItems);
    });
    const handleCheckedChange = useEventCallback((event, data)=>{
        var _options_onCheckedChange;
        const nextCheckedItems = createNextFlatCheckedItems(data, checkedItems, headlessTree);
        (_options_onCheckedChange = options.onCheckedChange) === null || _options_onCheckedChange === void 0 ? void 0 : _options_onCheckedChange.call(options, event, {
            ...data,
            checkedItems: ImmutableMap.dangerouslyGetInternalMap(nextCheckedItems)
        });
        setCheckedItems(nextCheckedItems);
    });
    const getNextNavigableItem = useEventCallback((visibleItems, data)=>{
        const item = headlessTree.get(data.value);
        if (item) {
            switch(data.type){
                case treeDataTypes.TypeAhead:
                    return item;
                case treeDataTypes.ArrowLeft:
                    return headlessTree.get(item.parentValue);
                case treeDataTypes.ArrowRight:
                    return visibleItems[item.index + 1];
                case treeDataTypes.End:
                    return visibleItems[visibleItems.length - 1];
                case treeDataTypes.Home:
                    return visibleItems[0];
                case treeDataTypes.ArrowDown:
                    return visibleItems[item.index + 1];
                case treeDataTypes.ArrowUp:
                    return visibleItems[item.index - 1];
            }
        }
    });
    const getElementFromItem = React.useCallback((item)=>{
        var _treeRef_current;
        return (_treeRef_current = treeRef.current) === null || _treeRef_current === void 0 ? void 0 : _treeRef_current.querySelector(`[${dataTreeItemValueAttrName}="${item.value}"]`);
    }, []);
    const ref = useMergedRefs(treeRef, navigation.rootRef);
    const getTreeProps = React.useCallback(()=>{
        var _options_onNavigation;
        return {
            ref,
            openItems,
            selectionMode: options.selectionMode,
            checkedItems,
            onOpenChange: handleOpenChange,
            onCheckedChange: handleCheckedChange,
            onNavigation: (_options_onNavigation = options.onNavigation) !== null && _options_onNavigation !== void 0 ? _options_onNavigation : noop
        };
    }, // ref, handleOpenChange - useEventCallback, handleCheckedChange - useEventCallback
    // eslint-disable-next-line react-hooks/exhaustive-deps
    [
        openItems,
        checkedItems,
        options.selectionMode,
        options.onNavigation
    ]);
    const items = React.useCallback(()=>headlessTree.visibleItems(openItems), [
        openItems,
        headlessTree
    ]);
    const getItem = React.useCallback((value)=>headlessTree.get(value), [
        headlessTree
    ]);
    return React.useMemo(()=>({
            navigate: navigation.navigate,
            getTreeProps,
            getNextNavigableItem,
            getElementFromItem,
            items,
            getItem
        }), [
        navigation.navigate,
        getTreeProps,
        getNextNavigableItem,
        getElementFromItem,
        items,
        getItem
    ]);
}
/** @internal */ function noop() {
/* noop */ }