'use client';
import * as React from 'react';
import { getIntrinsicElementProps, mergeCallbacks, slot } from '@fluentui/react-utilities';
import { usePopoverContext_unstable } from '@fluentui/react-popover';
import { useCarouselContext_unstable } from '../TeachingPopoverCarousel/Carousel/CarouselContext';
import { useEventCallback } from '@fluentui/react-utilities';
import { useButton_unstable } from '@fluentui/react-button';
import { useCarouselValues_unstable } from '../TeachingPopoverCarousel/Carousel/useCarouselValues';
/**
 * Create the state required to render TeachingPopoverCarouselFooterButton.
 *
 * The returned state can be modified with hooks such as useTeachingPopoverCarouselFooterButtonStyles_unstable,
 * before being passed to renderTeachingPopoverCarouselFooterButton_unstable.
 *
 * @param props - props from this instance of TeachingPopoverCarouselFooterButton
 * @param ref - reference to root HTMLDivElement of TeachingPopoverCarouselFooterButton
 */ export const useTeachingPopoverCarouselFooterButton_unstable = (props, ref)=>{
    const { navType, altText } = props;
    const popoverAppearance = usePopoverContext_unstable((context)=>context.appearance);
    const selectPageByDirection = useCarouselContext_unstable((c)=>c.selectPageByDirection);
    const values = useCarouselValues_unstable((snapshot)=>snapshot);
    const activeValue = useCarouselContext_unstable((c)=>c.value);
    const handleClick = (event)=>{
        if (event.isDefaultPrevented()) {
            return;
        }
        selectPageByDirection(event, navType);
    };
    const handleButtonClick = useEventCallback(mergeCallbacks(handleClick, props.onClick));
    const isTrailing = React.useMemo(()=>{
        if (!activeValue) {
            return false;
        }
        if (navType === 'prev') {
            return values.indexOf(activeValue) === 0;
        }
        return values.indexOf(activeValue) === values.length - 1;
    }, [
        navType,
        activeValue,
        values
    ]);
    let buttonAppearanceType;
    if (navType === 'next') {
        buttonAppearanceType = popoverAppearance === 'brand' ? undefined : 'primary';
    } else {
        buttonAppearanceType = popoverAppearance === 'brand' ? 'outline' : undefined;
    }
    /* Handle altText on trailing step */ let buttonChild = props.children;
    if (isTrailing) {
        buttonChild = altText;
    }
    return {
        ...useButton_unstable({
            appearance: buttonAppearanceType,
            ...props
        }, ref),
        navType,
        popoverAppearance,
        altText,
        // Override useButton root slot
        root: slot.always(getIntrinsicElementProps('button', {
            ref,
            appearance: buttonAppearanceType,
            ...props,
            onClick: handleButtonClick,
            children: buttonChild
        }), {
            elementType: 'button'
        })
    };
};