'use client';
import * as React from 'react';
import { slot, useMergedRefs } from '@fluentui/react-utilities';
import { useVirtualizer_unstable } from '../Virtualizer/useVirtualizer';
import { useDynamicVirtualizerMeasure } from '../../Hooks';
import { useVirtualizerContextState_unstable, scrollToItemDynamic } from '../../Utilities';
import { useMeasureList } from '../../hooks/useMeasureList';
import { useDynamicVirtualizerPagination } from '../../hooks/useDynamicPagination';
/**
 * @deprecated migrated to \@fluentui\-contrib/react\-virtualizer for stable release.
 */ export function useVirtualizerScrollViewDynamic_unstable(props) {
    'use no memo';
    var _imperativeVirtualizerRef_current;
    const contextState = useVirtualizerContextState_unstable(props.virtualizerContext);
    const { imperativeRef, axis = 'vertical', reversed, imperativeVirtualizerRef, enablePagination = false, bufferItems: _bufferItems, bufferSize: _bufferSize } = props;
    let sizeTrackingArray = React.useRef(new Array(props.numItems).fill(props.itemSize));
    // This lets us trigger updates when a size change occurs.
    const [sizeUpdateCount, setSizeUpdateCount] = React.useState(0);
    const getChildSizeAuto = React.useCallback((index)=>{
        if (sizeTrackingArray.current.length <= index || sizeTrackingArray.current[index] <= 0) {
            // Default size for initial state or untracked
            return props.itemSize;
        }
        /* Required to be defined prior to our measure function
       * we use a sizing array ref that we will update post-render
       */ return sizeTrackingArray.current[index];
    }, // eslint-disable-next-line react-hooks/exhaustive-deps
    [
        sizeTrackingArray,
        props.itemSize,
        sizeUpdateCount
    ]);
    var _props_axis, _props_getItemSize;
    const { virtualizerLength, bufferItems, bufferSize, scrollRef, containerSizeRef, updateScrollPosition } = useDynamicVirtualizerMeasure({
        defaultItemSize: props.itemSize,
        direction: (_props_axis = props.axis) !== null && _props_axis !== void 0 ? _props_axis : 'vertical',
        getItemSize: (_props_getItemSize = props.getItemSize) !== null && _props_getItemSize !== void 0 ? _props_getItemSize : getChildSizeAuto,
        virtualizerContext: contextState,
        numItems: props.numItems,
        bufferItems: _bufferItems,
        bufferSize: _bufferSize
    });
    const _imperativeVirtualizerRef = useMergedRefs(React.useRef(null), imperativeVirtualizerRef);
    var _contextState_contextIndex;
    const paginationRef = useDynamicVirtualizerPagination({
        axis,
        progressiveItemSizes: (_imperativeVirtualizerRef_current = _imperativeVirtualizerRef.current) === null || _imperativeVirtualizerRef_current === void 0 ? void 0 : _imperativeVirtualizerRef_current.progressiveSizes,
        virtualizerLength,
        currentIndex: (_contextState_contextIndex = contextState === null || contextState === void 0 ? void 0 : contextState.contextIndex) !== null && _contextState_contextIndex !== void 0 ? _contextState_contextIndex : 0
    }, enablePagination);
    // Store the virtualizer length as a ref for imperative ref access
    const virtualizerLengthRef = React.useRef(virtualizerLength);
    if (virtualizerLengthRef.current !== virtualizerLength) {
        virtualizerLengthRef.current = virtualizerLength;
    }
    const scrollViewRef = useMergedRefs(props.scrollViewRef, scrollRef, paginationRef);
    const scrollCallbackRef = React.useRef(null);
    React.useImperativeHandle(imperativeRef, ()=>{
        var _imperativeVirtualizerRef_current;
        return {
            scrollTo (index, behavior = 'auto', callback) {
                scrollCallbackRef.current = callback !== null && callback !== void 0 ? callback : null;
                if (_imperativeVirtualizerRef.current) {
                    var _imperativeVirtualizerRef_current;
                    const progressiveSizes = _imperativeVirtualizerRef.current.progressiveSizes.current;
                    const totalSize = progressiveSizes && (progressiveSizes === null || progressiveSizes === void 0 ? void 0 : progressiveSizes.length) > 0 ? progressiveSizes[Math.max(progressiveSizes.length - 1, 0)] : 0;
                    _imperativeVirtualizerRef.current.setFlaggedIndex(index);
                    scrollToItemDynamic({
                        index,
                        itemSizes: (_imperativeVirtualizerRef_current = _imperativeVirtualizerRef.current) === null || _imperativeVirtualizerRef_current === void 0 ? void 0 : _imperativeVirtualizerRef_current.nodeSizes,
                        totalSize,
                        scrollViewRef: scrollViewRef,
                        axis,
                        reversed,
                        behavior
                    });
                }
            },
            currentIndex: (_imperativeVirtualizerRef_current = _imperativeVirtualizerRef.current) === null || _imperativeVirtualizerRef_current === void 0 ? void 0 : _imperativeVirtualizerRef_current.currentIndex,
            virtualizerLength: virtualizerLengthRef
        };
    }, [
        axis,
        scrollViewRef,
        reversed,
        _imperativeVirtualizerRef
    ]);
    const handleRenderedIndex = (index)=>{
        if (scrollCallbackRef.current) {
            scrollCallbackRef.current(index);
        }
    };
    var _props_getItemSize1;
    const virtualizerState = useVirtualizer_unstable({
        ...props,
        getItemSize: (_props_getItemSize1 = props.getItemSize) !== null && _props_getItemSize1 !== void 0 ? _props_getItemSize1 : getChildSizeAuto,
        virtualizerLength,
        bufferItems,
        bufferSize,
        virtualizerContext: contextState,
        imperativeVirtualizerRef: _imperativeVirtualizerRef,
        onRenderedFlaggedIndex: handleRenderedIndex,
        containerSizeRef,
        scrollViewRef,
        updateScrollPosition
    });
    const measureObject = useMeasureList(virtualizerState.virtualizerStartIndex, virtualizerLength, props.numItems, props.itemSize);
    if (enablePagination && measureObject.sizeUpdateCount !== sizeUpdateCount) {
        /* This enables us to let callback know that the sizes have been updated
    triggers a re-render but is only required on pagination (else index change handles) */ setSizeUpdateCount(measureObject.sizeUpdateCount);
    }
    if (axis === 'horizontal') {
        sizeTrackingArray = measureObject.widthArray;
    } else {
        sizeTrackingArray = measureObject.heightArray;
    }
    if (!props.getItemSize) {
        // Auto-measuring is required
        React.Children.map(virtualizerState.virtualizedChildren, (child, index)=>{
            if (/*#__PURE__*/ React.isValidElement(child)) {
                virtualizerState.virtualizedChildren[index] = /*#__PURE__*/ React.createElement(child.type, {
                    ...child.props,
                    key: child.key,
                    ref: (element)=>{
                        if (child.hasOwnProperty('ref')) {
                            // We must access this from the child directly, not props (forward ref).
                            // eslint-disable-next-line  @typescript-eslint/no-explicit-any
                            const localRef = child === null || child === void 0 ? void 0 : child.ref;
                            if (typeof localRef === 'function') {
                                localRef(element);
                            } else if (localRef) {
                                localRef.current = element;
                            }
                        }
                        // Call the auto-measure ref attachment.
                        measureObject.createIndexedRef(index)(element);
                    }
                });
            }
        });
    }
    return {
        ...virtualizerState,
        components: {
            ...virtualizerState.components,
            container: 'div'
        },
        container: slot.always(props.container, {
            defaultProps: {
                ref: scrollViewRef
            },
            elementType: 'div'
        })
    };
}