import { addEventListener, addMeltEventListener, makeElement, createElHelpers, effect, executeCallbacks, getPortalDestination, isBrowser, isDocument, isElement, isTouch, kbd, makeHullFromElements, noop, omit, overridable, pointInPolygon, styleToString, toWritableStores, removeUndefined, portalAttr, } from '../../internal/helpers/index.js';
import { useFloating, usePortal } from '../../internal/actions/index.js';
import { derived, writable } from 'svelte/store';
import { generateIds } from '../../internal/helpers/id.js';
import { tick } from 'svelte';
const defaults = {
    positioning: {
        placement: 'bottom',
    },
    arrowSize: 8,
    defaultOpen: false,
    closeOnPointerDown: true,
    openDelay: 1000,
    closeDelay: 0,
    forceVisible: false,
    portal: undefined,
    closeOnEscape: true,
    disableHoverableContent: false,
    group: undefined,
};
const { name } = createElHelpers('tooltip');
// Store a global map to get the currently open tooltip.
const groupMap = new Map();
export const tooltipIdParts = ['trigger', 'content'];
export function createTooltip(props) {
    const withDefaults = { ...defaults, ...props };
    const options = toWritableStores(omit(withDefaults, 'open', 'ids'));
    const { positioning, arrowSize, closeOnPointerDown, openDelay, closeDelay, forceVisible, portal, closeOnEscape, disableHoverableContent, group, } = options;
    const openWritable = withDefaults.open ?? writable(withDefaults.defaultOpen);
    const open = overridable(openWritable, withDefaults?.onOpenChange);
    const openReason = writable(null);
    const ids = toWritableStores({ ...generateIds(tooltipIdParts), ...withDefaults.ids });
    let clickedTrigger = false;
    const getEl = (part) => {
        if (!isBrowser)
            return null;
        return document.getElementById(ids[part].get());
    };
    let openTimeout = null;
    let closeTimeout = null;
    function openTooltip(reason) {
        if (closeTimeout) {
            window.clearTimeout(closeTimeout);
            closeTimeout = null;
        }
        if (!openTimeout) {
            openTimeout = window.setTimeout(() => {
                open.set(true);
                // Don't override the reason if it's already set.
                openReason.update((prev) => prev ?? reason);
                openTimeout = null;
            }, openDelay.get());
        }
    }
    function closeTooltip(isBlur) {
        if (openTimeout) {
            window.clearTimeout(openTimeout);
            openTimeout = null;
        }
        if (isBlur && isMouseInTooltipArea) {
            // Normally when blurring the trigger, we want to close the tooltip.
            // The exception is when the mouse is still in the tooltip area.
            // In that case, we have to set the openReason to pointer, so that
            // it can close when the mouse leaves the tooltip area.
            openReason.set('pointer');
            return;
        }
        if (!closeTimeout) {
            closeTimeout = window.setTimeout(() => {
                open.set(false);
                openReason.set(null);
                if (isBlur)
                    clickedTrigger = false;
                closeTimeout = null;
            }, closeDelay.get());
        }
    }
    const isVisible = derived([open, forceVisible], ([$open, $forceVisible]) => {
        return $open || $forceVisible;
    });
    const trigger = makeElement(name('trigger'), {
        stores: [ids.content, ids.trigger, open],
        returned: ([$contentId, $triggerId, $open]) => {
            return {
                'aria-describedby': $contentId,
                id: $triggerId,
                'data-state': $open ? 'open' : 'closed',
            };
        },
        action: (node) => {
            const keydownHandler = (e) => {
                if (closeOnEscape.get() && e.key === kbd.ESCAPE) {
                    if (openTimeout) {
                        window.clearTimeout(openTimeout);
                        openTimeout = null;
                    }
                    open.set(false);
                }
            };
            const unsub = executeCallbacks(addMeltEventListener(node, 'pointerdown', () => {
                const $closeOnPointerDown = closeOnPointerDown.get();
                if (!$closeOnPointerDown)
                    return;
                open.set(false);
                clickedTrigger = true;
                if (openTimeout) {
                    window.clearTimeout(openTimeout);
                    openTimeout = null;
                }
            }), addMeltEventListener(node, 'pointerenter', (e) => {
                if (isTouch(e))
                    return;
                openTooltip('pointer');
            }), addMeltEventListener(node, 'pointerleave', (e) => {
                if (isTouch(e))
                    return;
                if (openTimeout) {
                    window.clearTimeout(openTimeout);
                    openTimeout = null;
                }
            }), addMeltEventListener(node, 'focus', () => {
                if (clickedTrigger)
                    return;
                openTooltip('focus');
            }), addMeltEventListener(node, 'blur', () => closeTooltip(true)), addMeltEventListener(node, 'keydown', keydownHandler), addEventListener(document, 'keydown', keydownHandler));
            return {
                destroy: unsub,
            };
        },
    });
    const content = makeElement(name('content'), {
        stores: [isVisible, open, portal, ids.content],
        returned: ([$isVisible, $open, $portal, $contentId]) => {
            return removeUndefined({
                role: 'tooltip',
                hidden: $isVisible ? undefined : true,
                tabindex: -1,
                style: $isVisible ? undefined : styleToString({ display: 'none' }),
                id: $contentId,
                'data-portal': portalAttr($portal),
                'data-state': $open ? 'open' : 'closed',
            });
        },
        action: (node) => {
            let unsubFloating = noop;
            let unsubPortal = noop;
            const unsubDerived = effect([isVisible, positioning, portal], ([$isVisible, $positioning, $portal]) => {
                const triggerEl = getEl('trigger');
                if (!$isVisible || !triggerEl) {
                    unsubPortal();
                    unsubFloating();
                    return;
                }
                tick().then(() => {
                    if ($portal === null) {
                        unsubPortal();
                    }
                    else {
                        const portalDest = getPortalDestination(node, $portal);
                        if (portalDest) {
                            const portalReturn = usePortal(node, portalDest);
                            if (portalReturn && portalReturn.destroy) {
                                unsubPortal = portalReturn.destroy;
                            }
                        }
                    }
                    const floatingReturn = useFloating(triggerEl, node, $positioning);
                    unsubFloating = floatingReturn.destroy;
                });
            });
            /**
             * We don't want the tooltip to remain open if the user starts scrolling
             * while their pointer is over the tooltip, so we close it.
             */
            function handleScroll(e) {
                if (!open.get())
                    return;
                const target = e.target;
                if (!isElement(target) && !isDocument(target))
                    return;
                const triggerEl = getEl('trigger');
                if (triggerEl && target.contains(triggerEl)) {
                    closeTooltip();
                }
            }
            const unsubEvents = executeCallbacks(addMeltEventListener(node, 'pointerenter', () => openTooltip('pointer')), addMeltEventListener(node, 'pointerdown', () => openTooltip('pointer')), addEventListener(window, 'scroll', handleScroll, { capture: true }));
            return {
                destroy() {
                    unsubEvents();
                    unsubPortal();
                    unsubFloating();
                    unsubDerived();
                },
            };
        },
    });
    const arrow = makeElement(name('arrow'), {
        stores: arrowSize,
        returned: ($arrowSize) => ({
            'data-arrow': true,
            style: styleToString({
                position: 'absolute',
                width: `var(--arrow-size, ${$arrowSize}px)`,
                height: `var(--arrow-size, ${$arrowSize}px)`,
            }),
        }),
    });
    let isMouseInTooltipArea = false;
    effect(open, ($open) => {
        const currentGroup = group.get();
        if (currentGroup === undefined || currentGroup === false) {
            return;
        }
        if (!$open) {
            if (groupMap.get(currentGroup) === open) {
                // Tooltip is no longer open
                groupMap.delete(currentGroup);
            }
            return;
        }
        // Close the currently open tooltip in the same group
        // and set this tooltip as the open one.
        const currentOpen = groupMap.get(currentGroup);
        currentOpen?.set(false);
        groupMap.set(currentGroup, open);
    });
    effect([open, openReason], ([$open, $openReason]) => {
        if (!$open || !isBrowser)
            return;
        return executeCallbacks(addEventListener(document, 'mousemove', (e) => {
            const contentEl = getEl('content');
            const triggerEl = getEl('trigger');
            if (!contentEl || !triggerEl)
                return;
            const polygonElements = disableHoverableContent.get()
                ? [triggerEl]
                : [triggerEl, contentEl];
            const polygon = makeHullFromElements(polygonElements);
            isMouseInTooltipArea = pointInPolygon({
                x: e.clientX,
                y: e.clientY,
            }, polygon);
            if ($openReason !== 'pointer')
                return;
            if (!isMouseInTooltipArea) {
                closeTooltip();
            }
        }));
    });
    return {
        ids,
        elements: {
            trigger,
            content,
            arrow,
        },
        states: { open },
        options,
    };
}